taxonID	type	description	language	source
9AE9C4BDF1895F2C87FBFFF88EE96563.taxon	materials_examined	Additional material (female) Coll. Kernegger 59 / 2006. The specimen was briefly described by Skartveit (2009: 26 - 27).	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
9AE9C4BDF1895F2C87FBFFF88EE96563.taxon	etymology	Etymology. The epithet is derived from Latin succinum, amber, referring to the preservation of the type specimen. It is the first species of the genus Bibio described from amber fossils.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
9AE9C4BDF1895F2C87FBFFF88EE96563.taxon	diagnosis	Diagnosis. A medium-sized Bibio, body length about 7.5 mm. Body and legs entirely black, densely pilose, pile on thorax and abdomen pale, black on legs. Antennal flagellum 8 - 9 - segmented. Haltere pale brown. Wing light brownish fumose in male, brown fumose in female, pterostigma pale and indistinctive, radial sector about four times as long as R-M. Fore tibia with spur a little less than half as long as spine. Hind tarsus not enlarged.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
9AE9C4BDF1895F2C87FBFFF88EE96563.taxon	description	Description. Male (N = 1): Total length 7.5 mm, entirely black. Head (Fig. 25): Length 1.37 mm, width not possible to measure. Complex eye with rather dense, pale, fine, medium-length intraocular pile. Ocellar tubercle not prominent, with short, dark setae. Rostrum not prominent. Antenna: flagellum 8 - segmented, 0.53 mm long, 0.13 mm wide. Two distal palp segments slender (more basal segments not possible to see). Thorax: Length 2.2 mm, black, very shiny. Pile pale, anteriorly rather short, getting longer in posterior part, sides of mesonotum and pleurae with long but rather sparse, pale pile. Sides of mesonotum with rather coarse, mesh-like microsculpture. Scutellum rounded with long, pale, proclinate setae along edge. Meron very shiny, in upper corner with about 20 long, pale hairs. Haltere pale brown, not possible to see well. Wing (Fig. 24): Length 5.6 mm, width 1.9 mm, length / width = 2.92. Slightly brownish fumose, Costa and R 1 light brown, posterior veins colourless. Pterostigma pale brown, inconspicuous, 0.45 mm long, 0.15 mm wide. Membrane without conspicuous microtrichia. Costa extends to apex of R 4 + 5. Humeral vein present, fine and oblique. Subcosta weak, visible only in distal part. Basal radial sector about four times as long as crossvein R-M, M curves towards R 1 at R-M. M basally clearly connected to CuA. M-Cu oblique, meets M at furcation. CuA 1 apically moderately, CuA 2 strongly curved basad. Vein lengths, all in mm: Basal R 2.51, distal R 1 1.20, Rs 0.39, R 4 + 5 2.63, R-M 0.09, basal M 1.80, distal M 0.94, M 1 1.95, M 2 1.73, M-CuA 0.38, CuA 1.13, CuA 1 2.51, CuA 2 1.91. Legs: Black, clothed with short, strong, dark setae. Fore tibia (Fig. 26) with spur about half as long as spine. Hind femur (Fig. 28) basally thin, expanding at about 1 / 4 of length, outer part stocky. Hind tibia rather slender, densely pilose, apparently without bare field of sensillae. Tarsus slender. Fore femur length 1.24 mm, width 0.32 mm, hind femur length 2.29 mm, width 0.41 mm, hind tibia length 2.25 mm, width 0.26 mm, hind first tarsomere 0.63 mm long, 0.18 mm wide, hind second to fifth tarsomeres length 0.38, 0.28, 0.23, 0.37 mm. Abdomen: Black, clothed with rather short, fine, pale pile. Terminalia: Gonostylus apically slender, rather straight. Hypopygium otherwise not possible to see. Female (tentatively associated, N = 1): Total length 7.5 mm, entirely black. Head: Antennal flagellum 9 - segmented. Occiput with short, dark setae. Complex eye rather small, rounded, with short, scattered, brownish intraocular pile. Thorax: Mesonotum length 1.9 mm. Covered by Verlumung in the specimen available. Haltere yellowish. Wing: Brown fumose, membrane without microtrichia. Costa and R-veins brown, more posterior veins colourless. Basal radial sector about five times as long as crossvein R-M Legs: black, rather stout. Length of fore femur 1.5 mm, width 0.5 mm, length of fore tibia 1.4 mm, of hind tibia 2.2 mm. Fore tibia (Fig. 27) with spine about three times as long as spur, this is stout, straight and pointed. The tibia is clothed with quite long, fine setae and has a field of rounded coeloconical sensillae in the middle of the anterior face. The tarsi are quite slender. Abdomen: cylindrical, no details possible to see. Terminalia: no details possible to see.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
5200BC809B3C57F8987DE257809F76B4.taxon	materials_examined	Additional material. Female, CCHH # 1789 - 2; female, JS-Baltic- 012, in piece of amber 15 x 8 x 4 mm.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
F3DEE8F67A295E12A7691CE4841A0527.taxon	materials_examined	Previously examined material. female, MHNN 711.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
F3DEE8F67A295E12A7691CE4841A0527.taxon	materials_examined	Material, females. JS-Baltic- 010, in piece of amber 20 x 12 x 5 mm; JS-Baltic- 011, in piece of amber 29 x 17 x 3 mm. Two female specimens, belonging to the Dilophus febrilis - group, with 9 flagellomeres, so not fitting any of the previously described species which have 6 - 7 (Dilophus crassicornis) or 12 (Dilophus pseudofebrilis and Dilophus succineus) flagellomeres. They are likely to be conspecific with the poorly preserved specimen treated as Dilophus sp. by Skartveit (2009: 38). As the other species of Dilophus from Baltic amber are based on male specimens I find it not advisable to formally name this species at the present stage of knowledge. Males of this species, should they appear, should be recognizable by characters of the antenna and fore tibia. Total length 4.55 - 5.68 mm. Body and legs entirely dark brown. Head (Fig. 33): Length 0.68 - 0.80 mm. Occiput, frons and gena all with strong, erect, relatively dense setae. Complex eye about half as long as head, somewhat protruding, with short and fine, rather dense intraocular pile. Ocellar triangle rather tall. Flagellum 9 - segmented, 0.35 - 0.40 mm long, 0.06 - 0.08 mm wide. Palp shorter than antenna, with last segment conical, about 2.5 times as long as wide, bearing relatively long setae. Thorax: Length 1.42 - 1.52 mm (N = 2), width 0.93 mm (N = 1). Pronotal spine comb with 12 evenly spaced, medium-length, erect, sharp spines. Mesonotal spine comb with about 16 small, sharp spines. Mesonotum moderately shiny with uniserial, short and fine dorsocentral setae (about 15 on each side), otherwise mostly bare. Scutellum evenly clothed with fine, short setae. Haltere dark brown with pale stem. Legs: Black with medium-length, dark setae. Protibia (Fig. 34) with four sharp, semi-erect mesal spines, the two most basal ones close-set, the two more distal separated by about one spine length. Apical circlet with eight sharp spines. Mid and hind legs slender throughout. Fore femur 0.63 - 0.72 mm long, 0.23 mm wide (N = 2), fore tibia 0.75 mm long, 0.10 mm wide (N = 1). Mid femur 1.03 mm long (N = 1). Hind femur 1.13 - 1.57 mm long (N = 2), 0.17 - 0.18 mm wide (N = 2), hind tibia 1.12 - 1.60 mm long, 0.08 - 0.12 mm wide, hind first tarsomere 0.41 - 0.53 mm long, 0.05 mm wide. Wing (Fig. 32): Rather crumbled in the newly acquired specimens. The specimen studied by Skartveit (2009) with wing as in Fig. 32, wing length 4.4 mm. Almost hyaline, costa and R-veins dark brown, more posterior veins lighter brown but still distinctive. All veins are fine, no conspicuous thickenings. Costa with biseriate, rather dense, pale setulae, basally about as long as the width of the costal cell, decreasing in length apicad. Costa extends to about half-way between apices of R 4 + 5 and M 1. Pterostigma oval, brown, distinctive. Humeral vein present, subcosta fine, straight, running well separated from R 1 in entire length. Basal R and R 1 dorsally with uniserial, fine, dark setulae which are about as long as the width of the vein and separated by about as much as their length, veins otherwise bare. Radial sector about one-third the length of crossvein R-M. R 4 + 5 gently curved. Area between R 4 + 5 and M 1 about 1.5 times as wide as fork of M. M-veins apically straight. Crossvein M-CuA meets M well basad of furcation. CuA with rather long stem and short fork, CuA 2 apically a little curved basad. CuP running approximately parallel to CuA, rather indistinctive. A 1 apparent on stem of wing only. Abdomen: Strongly swollen in specimen at hand, membraneous areas stretched. This is presumably because it is egg-filled. Tergites and sternites clad with short, dark setae.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
E4C62B5DF02B58F5B35F8F207127FFAE.taxon	description	Updated description of the species including type specimen (some measurements from the holotype corrected): Total length 4.35 - 4.40 mm (N = 2). Colour dark brownish, body semi-matt, covered with short, coarse, dark hairs. Head (Fig. 13): Length 0.47 - 0.52 mm (N = 2). Clearly dichoptic, complex eyes separated in frons by about the width of ocellar tubercle. Ocellar tubercle medium-sized, fairly prominent. Complex eye somewhat reniform, concave posteriorly, without apparent intraocular setae. Occiput with rather dense, short, dark pile. Antenna slender, about one and a half times as long as head, flagellum 0.78 mm long, 0.06 mm wide (N = 2), eight-segmented, all flagellomeres clearly longer than wide, with dark setae about as long as the width of the flagellomeres. Pedicel conical, pedicel and first flagellomere wider than the rest of flagellum. Palp brown, relatively long, last segment cylindrical. Mouthparts, apart from palp, not conspicuously developed. Thorax: Length 0.90 - 0.92 mm (N = 2), width 0.55 mm (N = 1). Reddish brown with darker vittae around notaulix and anterolaterally at humerus, semi-matt, grayish pruinose, with sparse, short setae. Mesonotum with deep sulci. Pleura bare, densely grayish pruinose except for glabrous patches posteriorly on katepisternum and epimeron. Haltere brown. Wing (Fig. 12) Length 4.18 - 4.35 mm (N = 2), width 1.32 - 1.52 mm (N = 2), length / width = 2.75 - 3.30 (wing of holotype may be slightly folded). Very slightly brownish fumose, membrane with very fine microtrichia, veins fine and brown throughout. Pterostigma not apparent. Costa with fine setulae about as long as width of vein, extends to nearly half-way between apices of R 4 + 5 and M 1. Humeral vein short and oblique. R 2 + 3 rather long, oblique, basally bent. R 4 + 5 strongly curved. R-M nearly vertical. M-veins apically very fine, hardly visible at wing edge, a little curved basad. CuA 1 straight, CuA 2 apically strongly curved basad. CuP fine, gently curved, reaches wing edge. Length of wing veins in mm (N = 2) subcosta 2.2 - 2.3, basal R 1.0 - 1.3, distal R 1 1.5 - 1.6, Rs 0.45 - 0.55, R 2 - 5 0.62 - 0.65, R 2 + 3 0.75 - 0.91, R 4 + 5 1.6 - 1.8, R-M 0.14, basal M 1.4, distal M 0.30 - 0.38, M 1 1.8, M 2 1.5 - 1.6, M-Cu 0.10 - 0.15, CuA 1.0 - 1.4, CuA 1 1.7 - 2.0, CuA 2 1.3 - 1.6. Legs: Dark brown, long and slender, clad with strong, short, dark pile. Fore tibia with one, mid- and hind-tibiae with two short, straight, dark spurs. Tarsi very slender. Leg measurements (N = 2 unless otherwise stated) fore femur 1.4 - 1.5 mm long, fore tibia 1.4 mm long (N = 1), fore first tarsomere 0.77 mm long (N = 1), mid femur 1.5 mm long (N = 1), mid tibia 1.3 mm long (N = 1), hind femur 1.6 - 1.9 mm long, 0.12 mm wide (N = 1), hind tibia 1.8 - 2.1 mm long, 0.09 mm wide (N = 1), hind first tarsomere 0.86 mm long (N = 1). Abdomen: Dark brown, cylindrical, slender, rather densely clad with dark brown pile. Length 3.1 mm, width 0.5 mm (N = 1). Terminalia (Fig. 14): Width of hypopygium 0.47 mm (N = 1). Hypopygium slightly expanding apicad, clad with short, dark pile. Gonostylus curved and sharply pointed, 0.24 mm long (N = 1). Posterior edge of gonocoxosternite almost straight. Epandrium apparently quite small, not possible to see clearly, probably rounded-rectangular. Ejaculatory apodeme large and prominent, apically dome-shaped.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
E4C62B5DF02B58F5B35F8F207127FFAE.taxon	discussion	Discussion. The original description was found to contain some errors, e. g., the flagellum has eight, not seven segments, and is shorter than stated in the description. The poorly developed mouthparts suggest that this species did not feed in the adult stage, this may be a general trait for Hesperinus species as all seem to have very small mouthparts. The genus Hesperinus has frequently been referred to a separate family, the Hesperinidae (e. g., Krivosheina 1997). However, molecular evidence suggests that the genus belongs in the Bibionidae (Sevcik et al. 2016) and this is also supported by fossil material, where Hesperinus and Penthetria species look far more similar than in the modern species. Hence, I prefer to place Hesperinus and Penthetria together in the subfamily Hesperininae in Bibionidae (Skartveit and Ansorge 2020).	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
1FA82D5CE189527ABEBBF5E36610DF35.taxon	materials_examined	Material. Female, SDEI Dip- 00823 - CCHH # 1789 - 4, embedded in a clear amber block which has undergone autoclave treatment (C. Hoffeins, in litt.). The species differs from Penthetria montanaregis in the following aspects: smaller, wing length about 4.5 mm, wing narrower, more than 3 times as long as wide (in bibionids, females generally have wider wings than conspecific males) with reduced anal lobe, R 2 + 3 placed more distally so that the segment R 2 - 5 is almost as long as R 4 + 5 (less than half as long in P. montanaregis), fork of M strongly asymmetrical (nearly symmetrical in P. montanaregis), CuA 2 apically strongly curved basad (moderately curved basad in P. montanaregis). It differs from female Penthetria integroneura Skartveit, 2009 most conspicuously by the presence of R 2 + 3 and by the more strongly curved CuA-veins, also by the presence of strong setae dorsally on the thorax and apparently by the head shape, though the latter is likely affected by autoclave treatment.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
1FA82D5CE189527ABEBBF5E36610DF35.taxon	description	Description. Male unknown. Female (N = 1): Total length 5.0 mm. The specimen is of a uniform, dark colour, likely affected by the autoclaving. Head: length 0.58 mm. Apparent shape probably affected by autoclaving, outline of complex eye not possible to see. Flagellum 0.42 mm long, 0.07 mm wide, 7 - segmented, shape of flagellomeres obviously affected by autoclaving. Palp relatively long, outer segments appear to be very slender, but this is likely an artefact caused by autoclaving. Thorax: Length 1.18 mm. Dorsally with some relatively long and strong, erect setae, details otherwise not possible to make out. Haltere light brown. Legs: relatively long, femorae slightly clavate, tibiae apparently very slender (possibly affected by autoclaving). The legs are clad with relatively long, brown pile, on tibiae about as long as the tibia's width. Tibial spurs fine and sharp. Segment measurements, all inn mm: fore femur length 1.37, width 0.16, fore tibia length 1.32, width 0.12, mid femur length 1.23, hind femur length 1.69, width 0.18, hind tibia length 1.71, width 0.13, hind first tarsomere length 0.63, width 0.07. Wing (Fig. 18): Length 4.6 mm, width 1.5 mm, length / width = 3.1. Brown fumose, relatively slender, veins brown throughout, R-veins considerably more robust than M- and CuA-veins. Costa relatively strong with rather long setules which at least basally are longer than the width of the vein, extending a little past half-way between apices of R 4 + 5 and M 1. Humeral vein present, oblique. Pterostigma relatively small, oval, brown. Subcosta fine but distinctive, straight. R 2 + 3 oblique, almost straight, a little less than half as long as R 4 + 5, which is gently curved. Rs straight, nearly three times as long as R-M, which is vertical. R 2 - 5 (basally of R 2 + 3) almost as long as R 4 + 5 (distally of R 2 + 3). M basally connected to CuA. M-veins fine, M and M 2 form an approximately straight line with M 1 diverging forward from this. CuA 1 apically slightly, CuA 2 strongly bent basad. CuP parallel to CuA / CuA 2, fine but does reach wing margin. Anal lobe strongly reduced, basal-posterior edge of the wing nearly straight-lined. Vein lengths, all in mm: Subcosta 2.48, Basal R 1.46, R 1 1.44, Rs 0.53, R 2 - 5 1.09, R 2 + 3 0.58, R 4 + 5 1.27, R-M 0.19, basal M 1.41, distal M 0.44, M 1 1.85, M 2 1.41, M-CuA 0.14, CuA 1.02, CuA 1 1.99, CuA 2 1.18. The wings have numerous, transverse cracks probably caused by autoclaving, this has not altered the overall shape, though. Abdomen: Length 3.6 mm, dark, cylindrical, with fine, dark, short pile. Shape of terminalia difficult to make out, probably affected by autoclaving.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
1FA82D5CE189527ABEBBF5E36610DF35.taxon	discussion	Discussion. The specimen of this species is obviously affected by autoclave treatment, particularly so in the head where the overall shape appears changed, the outlines of the complex eyes are not possible to make out, and the shapes of the antennal and palp segments are strongly disrupted. The autoclaving appears also to have altered the appearance of the terminalia, and possibly thorax and legs to some extent. However, the wing characters appear to be uncompromised and should be sufficient to recognise the species, at the very least to differentiate it from the other species of Penthetria known from Baltic amber. Identifying Penthetria species based on female specimens is very difficult in recent species and this is probably so in fossil species, too, hence this specimen is not given a formal name at this stage.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
8BBFA3BE2F9E5D4E9DC3C200CD0074D1.taxon	materials_examined	Additional material, females. JS-Baltic- 002, in piece of amber 20 x 15 x 4 mm, JS-Baltic- 003, in piece of amber 18 x 13 x 6 mm. These specimens do not reveal any characters not seen in the type material, but their morphometric data is given below. Total length 3.47 - 4.62 mm. Head: Length 0.42 mm (N = 1), width 0.57 - 0.60 mm. Flagellum length 0.40 - 0.47 mm, width 0.08 mm (N = 2). Thorax: Length 0.83 - 0.92 mm. Legs: Fore femur 0.66 - 0.79 mm long, 0.12 - 0.15 mm wide, fore tibia 0.75 - 1.11 mm long, 0.08 - 0.09 mm wide, fore first tarsomere 0.24 - 0.38 mm long, 0.05 - 0.07 mm wide, fore second to fifth tarsomeres 0.19, 0.13, 0.11 and 0.15 mm long (N = 1). Mid femur 0.88 mm long, 0.15 mm wide (N = 1), mid tibia 0.69 mm long, 0.08 mm wide (N = 1). Hind femur 0.90 - 1.24 mm long, 0.11 - 0.15 mm wide, hind tibia 0.97 - 1.20 mm long, 0.08 - 0.12 mm wide, hind first tarsomere 0.23 - 0.41 mm long, 0.07 - 0.09 mm wide. Wing: length 3.05 - 3.11 mm, width 1.00 - 1.39 mm, length / width = 2.24 - 3.05. Vein lengths, all in mm: Subcosta 1.50 - 1.58, basal R 1.00 - 1.13, distal R 1 0.75 - 0.85, Rs 0.27 - 0.38, R 2 - 5 0.58 - 0.83, R 2 + 3 0.16 - 0.23, R 4 + 5 0.64 - 0.68, R-M 0.07 - 0.17, basal M 0.92 - 1.05, distal M 0.33 - 0.34, M 1 1.20 - 1.37, M 2 0.88 - 1.00, M-CuA 0.11 (N = 1), CuA 0.67 - 0.79, CuA 1 1.12 - 1.54, CuA 2 0.58 - 1.16. Abdomen: Length 2.5 mm (N = 1).	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
8BBFA3BE2F9E5D4E9DC3C200CD0074D1.taxon	discussion	Discussion. The two specimens examined are similar in the shape of the head and antenna, general aspects of wing venation (short R 2 + 3, kinked R 4 + 5, CuA 2 bent sharply basad) and terminalia, however they are rather different with respect to some morphometric traits, particularly length of leg segments and the general shape of the wing. At the present state of knowledge I interpret this difference as within intraspecific variation, though additional material, particularly if male specimens are found, may reveal that there are more than one species involved.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
B0C14D8DA84B51B28E773C1B72C1883C.taxon	materials_examined	Measurements, including new material. Males: body length 4.5 - 5.2 mm (N = 4), thorax length 0.92 - 1.30 mm (N = 8), wing length 4.0 - 5.2 mm (N = 6). Females: body length 4.5 - 4.6 mm (N = 2), thorax length 0.97 - 1.17 mm (N = 2), wing length 4.6 mm (N = 1). Wings as in Figs 19, 20, head as in Figs 21, 22.	en	Skartveit, John (2021): A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae). Deutsche Entomologische Zeitschrift 68 (1): 81-99, DOI: http://dx.doi.org/10.3897/dez.68.60611, URL: http://dx.doi.org/10.3897/dez.68.60611
