Our Work

This report presents the results of an internal interlaboratory comparison (ILC) conducted within the MetrINo project as deliverable D8 to cross-validate orthogonal analytical techniques for the detec…

This report presents the results of an internal interlaboratory comparison (ILC) conducted within the MetrINo project as deliverable D8 to cross-validate orthogonal analytical techniques for the detection, localization, and quantification of inorganic nanoparticles (NPs) in biological matrices. The primary goal was to correlate complementary methodologies and define measurement uncertainties across a gradient of biological complexity. The ILC utilized four distinct sample categories: homogeneous epoxy phantoms for instrument calibration; 3D engineered tumor models using SISmuc scaffolds; HfO$_2$-spiked mouse liver tissue; and A549 lung cancer cells (analyzed as both 2D deposits and suspensions). The analytical framework integrated several complementary modalities:  Imaging and Localization: Two-Photon Excitation Fluorescence (TPEF) microscopy was used for deep-tissue 3D imaging, while Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) and SEM-EDX provided high-resolution surface chemical and elemental mapping. Quantification: Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) provided spatially resolved elemental quantification. For cellular mass analysis, the report compared bulk ICP-MS/OES with Single-Cell ICP-MS (SC-ICP-MS). Key results include the development of a custom Python-based registration pipeline using a KDTree-based centroid matching algorithm, which successfully correlated TPEF optical intensities with LA-ICP-MS and ToF-SIMS data. This allowed for the identification of optimal TPEF instrument settings to translate fluorescence counts into absolute nanoparticle concentrations. In cellular studies, LA-ICP-MS and bulk ICP-MS demonstrated strong agreement in quantifying HfO$_2$ uptake, whereas SC-ICP-MS faced significant challenges due to low transport efficiency and cell disruption during the injection process. By validating these orthogonal approaches, the report establishes the technical requirements and metrological foundation necessary for a future external ILC within the VAMAS TWA 40 framework.

The increasing global volumes of waste, specifically electronic waste and sewage sludge, and their use as analternative fuel are addressed. Only half of the collected empty printer and toner cartridge…

The increasing global volumes of waste, specifically electronic waste and sewage sludge, and their use as analternative fuel are addressed. Only half of the collected empty printer and toner cartridges can be reused. Theseare “original toner cartridges” bearing the same trademark as the corresponding printer or copier, contrary to“compatible toner cartridges” with a different trademark. The other half is not reused and is either combusted orsent to landfills. This work investigates safe ways of disposing of a growing mass of waste toner powder. Nopresent methods of disposing of the toner powder seem to be an environmentally friendly solution. Therefore, itappears that the most suitable use is as an alternative fuel in a mixture with another fuel/waste, e.g. sewagesludge. In this work, pellets of sewage sludge with waste toner powder were combusted in a fluidised bed of sandat a temperature of 800–900 ◦C. After reaching a steady state, the flue gas was analysed for Hg, CO, CO2, NOx,SO2, NH3, HCl, heavy metals, PCDD, PCDF, PCB, and PAH at an oxygen flue gas concentration of 11%. Theemissions are discussed in relation to the IED Annex VI Part 3 ELVs and the WI BAT-AELs.

Kelneria szymoni Pełczyńska, Krzemiński & Soszyńska sp. nov.Figures 11, 12, 13, 14Material.Holotype: MALE, preserved in a 29 × 19 × 5 mm piece of Baltic amb…

Kelneria szymoni Pełczyńska, Krzemiński & Soszyńska sp. nov.Figures 11, 12, 13, 14Material.Holotype: MALE, preserved in a 29 × 19 × 5 mm piece of Baltic amber (specimen MP/5375 a). Paratype: FEMALE, preserved in the same piece of amber (specimen MP/5375 b) deposited in the Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków, Poland (ISEA PAS) (Figs 19 A, 19 C, 19 [IR spectrum]).Diagnosis.Antennae approx. 0.7 × wing length in male, 0.5 × wing length in male, with distinctly separated flagellomeres densely covered with very short microtrichia; palpus small, with apical palpomere longer than the preceding one and shorter than first flagellomere; Sc ending in C distinctly before level rb cell tip; m – cu joining cubital before level of Rs base; R 2 + 3, approx. 0.4 length of R 2 + 3 + 4 + 5 fork stem; epandrium with deep, triangular notch, bearing long and narrow triangular processes, terminating approx. at the level of gonopods apices.Type locality and age.Late Eocene (Priabonian, c. 36–35 Ma), Baltic amber, exact locality unknown.Description.Body (Fig. 11 A): male approx. 2.6 mm long; wing 2.2 mm long; antennae approx. 1.6 mm long; female approx. 3.3 mm long; wing 2.6 mm long; antennae approx. 1.4 mm long. — Head (Fig. 13 A): wider than long; eyes large, well separated, occupying most of lateral part of head capsule; distinct cerebral sclerite present, rounded posteriorly, projected posteriorly, dorsal surface bearing several setae approximately half length of setae on scutum; three ocelli present, closely grouped, forming triangle, median ocellus not reduced. — Antennae (Figs 11 A, 13 A): robust, with 2 + 14 segments; 0.7 × wing length in male, 0.5 × wing length in female; scapus short, annular in shape, wider than long; pedicel bigger than scape, as long as broad, globular in shape, approx. 2.1 × wider than first flagellomere; flagellum with 12 distinctly separated segments, covered densely with very short microtrichia; first flagellomere approx. 3.4 × long as broad, subsequent flagellomeres progressively decreasing in length, except terminal one, which is longer than subsequent one, ending with small, weakly developed apiculus. — Mouthparts (Fig. 13 A): palpi small; two apical palpomeres visible; longer than broad; apical palpomere distinctly longer than subapical one; approx. 0.6 × length of first flagellomere. — Wing of male holotype (Fig. 12 A, C): broad, 2.1 × longer than wide; membrane hyaline without microtrichia and any visible markings; C with microtrichia throughout its length; microtrichia visible on dorsal surface of all veins, except for transverse veins and Rs; C terminates at the tip of the wing, beyond the end of R 4 + 5, at approximately three quarters of the distance between the end of R 4 + 5 and M 1; h close to the wing base; Sc short, ending in C distinctly before the level of the tip of the rᵦ cell; sc – r present, shortly after the level of h; R 1 ending in C shortly before half-length of the wing, distinctly before the level at which R 2 + 3 + 4 + 5 forks, approximately at the level of Cu termination; R 2 + 3 + 4 + 5 forks distal to the level at which M 1 + 2 forks, beyond half the width of the m 3 + 4 cell; R 2 + 3 approximately 0.4 × the length of the R 2 + 3 + 4 + 5 fork stem; frm ending slightly distal to the level at which A 1 is expected to reach the wing margin; a faint trace of Mᵦ present, dividing the basal cell into two; M 1 + 2 fork stem approximately 4.4 × longer than frm, ending shortly after the level of Cu termination; M 1 approximately 2.9 × longer than the M 1 + 2 fork stem; m 2 cell 1.3 × wider than m 1 cell; M 3 + 4 base weakened and partially atrophied; m 3 + 4 cell 1.1 × wider than m 2 cell; basal part of M 1 + 2 and m – cu distinct; Cu reaching the wing margin; A 1 ending on the wing margin; A 2 absent; anal angle folded, therefore its shape not discernible. — Wing of female paratype (Fig. 12 B, D): broad, 2 × longer than wide; membrane hyaline, without microtrichia or visible markings; C with microtrichia throughout its length; microtrichia present on the dorsal surface of all veins except the transverse veins and Rs; C terminates at the wing tip, beyond the end of R 4 + 5, at approximately three quarters of the distance between the end of R 4 + 5 and M 1; h close to the wing base; Sc short, ending in C distinctly before the level of the tip of the rᵦ cell; sc – r present, shortly after the level of h; R 1 ending in C at approximately half the wing length, distinctly before the level at which R 2 + 3 + 4 + 5 forks, shortly after the level of Cu termination; R 2 + 3 + 4 + 5 forks distal to the level at which M 1 + 2 forks, at approximately half the width of the m 3 + 4 cell; R 2 + 3 approximately 0.4 × the length of the R 2 + 3 + 4 + 5 fork stem; frm ending distal to the level at which A 1 reaches the wing margin; a faint trace of Mᵦ present, dividing the basal cell into two; M 1 + 2 fork stem approximately 3.9 × longer than frm, ending at approximately the level of Cu termination; M 1 approximately 2.8 × longer than the M 1 + 2 fork stem; m 2 cell 1.3 × wider than m 1 cell; base of M 3 + 4 weakened and partially atrophied; m 3 + 4 cell 1.1 × wider than m 1 cell; basal part of M 1 + 2 and m – cu distinct; Cu reaching the wing margin; A 1 ending on the wing margin; A 2 absent; anal angle rounded. — Thorax (Fig. 13 A): higher than long; scutum weakly convex, covered with dense, long setation arranged in two dorsocentral and two acrostichal rows; scutellum ovoid in lateral view, with a row of very long trichia along its margin; anepisternum triangular in shape, approximately as long as high, bare; katepisternum rectangular, higher than long, bare; anepimeron small, not reaching ventral margin of pleura, bare; laterotergite and mediotergite bare. — Legs (Figs 11 A, 13 B – D): fore coxa the longest, covered densely with long setae on entire anterior surface; mid coxa with a few setae anteroapically; hind coxa the shortest, with a row of setae anteroexternally; femora irregularly covered with long, thin setae; tibiae covered with long, irregularly arranged setae; fore tibiae with a sensory pit and a single spur, longer than apical width of tibia (approx. 1.1 × longer apical width of tibia); mid and hind tibiae without sensory pits, bearing two long spurs, subequal in length (spurs 2.1 and 2.2 × longer apical width of tibia, respectively); claws short; empodium large, longer than claws. — Abdomen (Fig. 11 A): covered with long, thin setae, all eight segments visible; segment I short, segment II the longest, subsequent segments progressively decreasing in length. — Male genitalia (Fig. 14 A – C, E, F, H, I): epandrium deeply notched, bearing long, narrow, triangular processes reaching apical tips of gonocoxopodites; gonocoxites large, triangular, partially fused, positioned parallel to each other; gonostyles very small, reduced to two lobes at external angle of gonocoxites; cerci ending approx. at the level of epandrial processes tips, densely covered with setae; phallosome strongly sclerotized. — Female genitalia (Fig. 14 D, G): tergite X well developed; cerci biarticulate, first segment short, second elongate (nearly 3 × longer than subsequent one); sternite VIII divided into two.Etymology.The species epithet szymoni is derived from the name Szymon and is honoring Szymon Kaczmarek (University of Lodz, Poland), who provided the holotype specimen.Remarks.The two specimens are interpreted as conspecific because the position of the male relative to the female strongly suggests that they were caught in resin either while in copula (and subsequently separated by a flow of resin), during the initiation of copulation, or immediately after copulation. Sexual dimorphism is evident in overall body proportions, with the female being larger and more robust, the antennae of the female are markedly shorter (approx. 0.5 × wing length), than those of the male (approx. 0.7 × wing length), slight differences are also observable in wing venation R 1 terminates slightly before the mid-length of the wing in the male (ending approximately at the level of Cu termination), whereas in the female it reaches approximately the mid-length of the wing (ending distinctly distal to the level of Cu termination), as shown in Fig. 12 C, D.

Kailan (Brassica oleracea var. alboglabra) is a leafy vegetable with high economic value whose productivity is strongly influenced by nutrient availability and growing media conditions. Eco-enzyme fer…

Kailan (Brassica oleracea var. alboglabra) is a leafy vegetable with high economic value whose productivity is strongly influenced by nutrient availability and growing media conditions. Eco-enzyme fertilizer has emerged as a promising environmentally friendly organic fertilizer that may enhance plant growth through the improvement of nutrient availability and biological activity in the growing medium. This study aimed to evaluate the effectiveness of different eco-enzyme fertilizer concentrations in improving the growth of kailan. The research was conducted at the experimental field in Titigalar Hamlet, Baturiti District, Tabanan Regency, Bali, Indonesia. The experiment was arranged in a randomized complete block design (RCBD) with one factor consisting of four eco-enzyme fertilizer concentrations: 0, 50, 100, and 150 mL L⁻¹ of water. Each treatment was replicated three times, resulting in 12 experimental units. The observed variables included plant height, number of leaves, leaf area, and leaf chlorophyll content. Data were analyzed using analysis of variance (ANOVA), followed by Tukey’s Honestly Significant Difference (HSD) test at the 5% significance level. The results showed that eco-enzyme fertilizer application had a highly significant effect on all observed growth parameters, including plant height, number of leaves, leaf area, and leaf chlorophyll content. Increasing eco-enzyme concentrations enhanced vegetative growth compared with the untreated control. The application of eco-enzyme at 100 mL L⁻¹ produced the most favorable vegetative growth, as indicated by superior plant height, leaf number, leaf area, and chlorophyll content. These findings demonstrate that eco-enzyme fertilizer is effective in promoting kailan growth and has considerable potential as an environmentally friendly organic fertilizer to support sustainable kailan cultivation.

Kelneria erroris Pełczyńska, Krzemiński & Soszyńska sp. nov.Figures 8, 9, 10Material.Holotype: MALE, preserved in a 15 × 10 × 3 mm piece of Baltic amber (GZ…

Kelneria erroris Pełczyńska, Krzemiński & Soszyńska sp. nov.Figures 8, 9, 10Material.Holotype: MALE, preserved in a 15 × 10 × 3 mm piece of Baltic amber (GZG.BST.03049) housed in the Geowissenschaftliches Zentrum, Universität Göttingen, Göttingen, Germany (GMUG) (Figs 8 A, 8 B, 19 [IR spectrum]).Diagnosis.Antennae approx. 0.7 × wing length, with distinctly separated flagellomeres densely covered with very short microtrichia; palpus small, with apical palpomere subequal in length to the preceding one and shorter than first flagellomere; Sc ending in C distinctly before level rb cell tip; m – cu joining cubital after level of Rs base; R 2 + 3 short, approx. 0.2 length of R 2 + 3 + 4 + 5 fork stem; epandrium with deep, triangular notch, bearing large, triangular lateral processes with very short, dense apical setation, terminating approx. at the level of gonopods apices. Female unknown.Type locality and age.Late Eocene (Priabonian, c. 36–35 Ma), Baltic amber (Sambian Peninsula), Kaliningrad Oblast, Russia.Description.Body (Fig. 8 A): approx. 2.2 mm long; wing 1.9 mm long; antennae 1.3 mm long. — Head (Fig. 9 A): wider than long; eyes large, well separated, occupying most of the lateral part of head capsule, distinct cerebral sclerite present, rounded posteriorly, projected posteriorly, dorsal surface bearing several setae approximately half the length of the setae on the scutum; three ocelli present, forming triangle, median ocellus not reduced, lateral ocelli situated on the dorsal surface of the cerebral sclerite, not on its margin. — Antennae (Fig. 9 A): with 2 + 14 segments; 0.7 × wing length in male, scapus annular in shape, wider than long; pedicel bigger than scape, as long as broad, globular in shape, about 1.7 × wider than first flagellomere; flagellum with 12 distinctly separated segments, densely covered with long microtrichia; first flagellomere approximately 2.7 × as long as broad; subsequent flagellomeres progressively decreasing in length, except for the terminal one, which is longer than the preceding one, terminating in a small apiculus. — Mouthparts (Fig. 9 A): palpi small; three apical palpomeres visible; all longer than broad; apical and subapical palpomeres subequal in length; approx. 0.7 × length of first flagellomere. — Wing (Fig. 9 B, C): broad, 2.3 × longer than wide, membrane hyaline without microtrichia and any visible markings; C with microtrichia throughout length; microtrichia visible on dorsal surface of all veins except transverse ones; C terminates at tip of wing, after end of R 4 + 5, on approx. two third of distance between end of R 4 + 5 and M 1; Sc very short, ending in C distinctly before the level of tip of rb cell; R 1 ending in C before half-length of wing, approx. at level of M 1 + 2 fork, just before the level of Cu termination; R 2 + 3 approx. 0.2 the length of R 2 + 3 + 4 + 5 fork stem; frm ending before level at which A 1 reaches wing margin; a faint trace of Mb is present, dividing the basal cell into two; M 1 + 2 fork stem approx. 4.5 × longer than frm, ending just before level of Cu termination; M 1 approx. 3.1 × longer than M 1 + 2 fork stem; m 2 cell opening 1.3 × wider than opening of m 1 cell; M 3 + 4 base weakened and widely interrupted; m 3 + 4 cell opening 0.9 × opening of m 2 cell; basal part of M 1 + 2 distinct; m – cu distinct, joining cubital vein after level of Rs base; Cu reaching wing margin; A 1 termination not visible, as wing is folded; A 2 absent. — Thorax (Fig. 9 A): higher than long; scutum weakly convex, densely covered with long setae arranged in two dorsocentral and two acrostichal rows; scutellum with a row of very long trichia along its margin; anepisternum narrowed dorsally, higher than long, with at least three setae on the dorsoanterior part; katepisternum higher than long, bare; anepimeron reaching the ventral margin of the pleura, bare; laterotergite and mediotergite bare. — Legs (Figs 8 A, 10 B – D): fore coxa the longest, sparsely setulose on anterior surface; hind coxa the shortest, with a several setae posteroexternally; femora irregularly covered with thin setae; tibiae covered with short, thin, irregularly arranged setae on whole surface; fore tibiae with a sensory pit and a single spur, 1.6 × longer than the apical width of the tibia; mid and hind tibiae without sensory pits, bearing two long spurs, subequal in length, (approx. 2.4 × longer apical width of tibia); claws short; empodium big, longer than claws. — Abdomen (Fig. 8 A): covered with long, thin setae, all eight segments visible; segment I short, segment II the longest, subsequent segments progressively decreasing in length. — Male genitalia (Figs 10 A – D): epandrium with deep, triangular notch; bearing large, triangular lateral processes with very short, dense apical setation, terminating approx. at level of gonopods apices; gonocoxites short, broad, triangular, partially fused, oriented parallel to each other; gonostyli strongly reduced, appearing as two small lobes at outer angles of gonocoxites; cerci not visible; phallosome bilobed, strongly sclerotized.Etymology.The species epithet erroris refers to a taxonomic error whereby the holotype of this species was previously included in the type series of K. abundare.Remarks.Crossvein sc – r is not illustrated in the wing drawing, as its likely positioned close to the wing base and cannot be discerned in the holotype; shape of the anal angle of the wing and apical tip of vein A 1 is hypothesized and indicated by a dashed line, as anal field of the wing of the holotype is folded; specimen designated herein as the holotype originates from the type series of K. abundare as defined by Meunier (1904); this misinterpretation was subsequently retained in the generic revision by Matile (1979) and is corrected in the present study.

A critical review of the Romanian edition of Lindsay Porter’s work, exploring the political assassination from antiquity to the modern era. Keywords: Book review, Lindsay Porter, Political assas…

A critical review of the Romanian edition of Lindsay Porter’s work, exploring the political assassination from antiquity to the modern era. Keywords: Book review, Lindsay Porter, Political assassination, Tyrannicide, History of political murder, Political terrorism. Publication Details: Book review published in Romanian in Caiete de Antropologie Istorică, Year VIII, No. 2(15), 2009, pp. 215–222, a biannual journal published by the Seminar of Historical Anthropology, Babeș-Bolyai University. Although this issue of “Caiete de Antropologie Istorică” bears the official cover year 2009, the physical volume was published in late 2010 / early 2011 (manuscript finalized in October 2010), which accounts for the review of Lindsay Porter’s 2010 Romanian edition of the book.

In this session, four library directors provided insight into the Norwegian library field. From their respective perspectives in the academic as well as the public library sector, they talked about ne…

In this session, four library directors provided insight into the Norwegian library field. From their respective perspectives in the academic as well as the public library sector, they talked about networks, collaborative projects and committee work in which they are involved. The purpose of these collaborative projects is to find good joint solutions for the benefit of libraries and library users in Norway. Joint solutions offer both opportunities and challenges, and the speakers reflected on this in their talks.

WispTerm is a terminal emulator written in Zig, using libghostty-vt for terminal emulation.

Kelneria rovnensis Pełczyńska & Perkovsky sp. nov.Figures 3, 4, 5, 6, 7Material.Holotype: MALE, preserved in an 11 × 10 × 4 mm piece of Rovno amber (SIZK K-32069) housed …

Kelneria rovnensis Pełczyńska & Perkovsky sp. nov.Figures 3, 4, 5, 6, 7Material.Holotype: MALE, preserved in an 11 × 10 × 4 mm piece of Rovno amber (SIZK K-32069) housed in the Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, Kyiv, Ukraine (SIZK); (Figs 3 A, 3 B, 19 [IR spectrum]). Syninclusions: SIZK K-32066 – K-32068 (Chelonariidae, Formicidae, Nematocera, stellate hairs).Type locality and age.Late Eocene (Priabonian, c. 36–35 Ma), Rovno amber (Volhynian Uplift), Pugach quarry, Klesov, Rovno Oblast, Ukraine.Diagnosis.Antennae approx. 0.8 × wing length, with distinctly separated flagellomeres densely covered with relatively long microtrichia; pedicel subequal in length to scape; palpus very large, with apical palpomere distinctly elongated, longer than subsequent one and longer than first flagellomere; Sc ending in C approx. at level of rb cell tip; m – cu joining cubital vein before level of Rs base; R 2 + 3 approx. 0.4 length of R 2 + 3 + 4 + 5 fork stem; epandrium deeply and broadly notched, bearing long, slender, spinulose lateral processes extending slightly beyond apices of gonopods. Female unknown.Description.Body (Fig. 3 A): approx. 2.5 mm long; wing 1.9 mm long; antennae 1.5 mm long. — Head (Fig. 4 A): wider than long; eyes large, well separated, occupying most of lateral surface of head capsule; distinct cerebral sclerite present, posteriorly rounded, with dorsal surface bearing dense, thick setae; ocelli present, lateral ocelli situated on dorsal surface of cerebral sclerite rather than at its margin; position of median ocellus obscured by antennae. — Antennae (Figs 3 A, 4 A): with 2 + 14 segments; 0.8 × wing length in male, scapus annular in shape, approx. as wide as long; pedicel slightly broader but approx. equal in length to scape, globular in shape, about 1.8 × wider than first flagellomere; flagellum with 12 distinctly separated segments, covered densely with relatively long microtrichia; first flagellomere approximately 3.2 × as long as broad; subsequent flagellomeres progressively decreasing in length, except the terminal one, which is longer than preceding segment, terminating in a thin apiculus. — Mouthparts (Fig. 4 A): palpus large, 1 + 4 segmented; small palpiger visible; all four maxillary palpomeres longer than broad; second and third palpomeres subequal in length; apical palpomere distinctly elongated, 2.6 × longer than the preceding one and 1.5 × longer than the first flagellomere; labella very large, well developed, approx. as long as the apical palpomere. — Wing (Fig. 4 B, C): broad, 2.2 × longer than wide, membrane hyaline without microtrichia and any visible markings; C with microtrichia throughout length; microtrichia visible on dorsal surface of radial and medial veins; C terminates at tip of wing, after end of R 4 + 5, on approx. two third of distance between end of R 4 + 5 and M 1; Sc ending in C approx. at the level of tip of rb cell; sc-r present on approx. half of the Rb length; R 1 ending in C approx. half-length of wing, just after level where M 1 + 2 forks, approx. at the level of Cu termination; R 2 + 3 approx. 0.4 the length of R 2 + 3 + 4 + 5 fork stem; frm ending just after level at which A 1 reaches wing margin; a faint trace of Mb is present, dividing the basal cell into two; M 1 + 2 fork stem approx. 4.8 × longer than frm, ending just before level of Cu termination; M 1 approx. 3.2 × longer than M 1 + 2 fork stem; m 2 cell opening 1.3 × wider than opening of cell M 1; M 3 + 4 base weakened; m 3 + 4 cell opening 1.3 × wider than opening of m 2 cell; basal part of M 1 + 2 distinct; m – cu distinct, joining cubital vein before level of Rs base; Cu reaching wing margin; A 1 ending on wing margin; A 2 absent. — Thorax (Fig. 4 A): higher than long; scutum weakly convex, densely covered with long, thick setae; scutellum with a row of very long trichia along its margin; anepisternum narrowed dorsally, higher than long, with few setae in the dorsoanterior part; katepisternum higher than long, bare; anepimeron reaching the ventral margin of the pleura, bare; laterotergite and mediotergite bare. — Legs (Fig. 5 B, C): fore coxa the longest, with long setae covering entire anterior surface; mid coxa with a several setae anteroapically and with at least two setae anteroexternally; hind coxa the shortest, with a several setae posteroexternally; femora densely and irregularly covered with thin setae; tibiae covered with short, thin, irregularly arranged setae on whole surface, additionally on posterior surface of hind tibia visible row of thicker and more robust setae; fore tibiae with a sensory pit and a single spur, more than 1.5 × longer than the apical width of the tibia; mid and hind tibiae without sensory pits, bearing two long spurs, subequal in length, (spurs 1.8 and 2.9 × longer apical width of tibia, respectively); claws short; empodium big, longer than claws. — Abdomen (Fig. 3 A): densely covered with long setae, all eight segments visible; segment I short, segment II the longest, segment III and IV subequal in length; subsequent segments progressively decreasing in length. — Male genitalia (Figs 5 A, 5 D – G, 6, 7): epandrium deeply and broadly notched, bearing slender, spinulose lateral processes terminating just before apices of gonopods, several apical setae present; gonocoxites short, broad, fused, oriented parallel to each other; gonostyli strongly reduced, appearing as two small lobes at outer angles of gonocoxites; cerci small; not exceeding length of epandrial processes, with visible marginal setation; anal cone prominent; paired lateral parameres present on either side of aedeagus; phallosome broadened; dorsoventrally flattened, strongly sclerotized.Etymology.The species epithet rovnensis refers to Rovno region of Ukraine, from which the holotype originates.Remarks.The specimen was found in the clear piece of amber with weight 4 g and size 38 × 10 × 25 mm; distinction between gonostyli and gonocoxites is unclear; shape of the anal angle of the wing is hypothesized and indicated by a dashed line, as the anal field of the wing of the holotype is folded.