Penthetria cimicoides ( Heer, 1849 ), 1868

Skartveit, John & Krizmanić, Katarina, 2020, Revision of fossil Bibionidae (Insecta: Diptera) from the Miocene of Radoboj, Croatia, Zootaxa 4759 (3), pp. 351-378 : 354-355

Penthetria cimicoides ( Heer, 1849)

( Figs. 2 , 21 )

Bibiopsis cimicoides Heer, 1849: 229 .

Penthetria cimicoides (Heer) Loew, 1868: 186 .

Plecia cimicoides (Heer) Evenhuis, 1994: 130 .

Type material: Holotype (male) SLJG, no catalogue number.

Additional material: females, CNHM 1829, 1834.

Male: Total length 13.7 mm.

Head: Length approximately 1.7 mm. Not well preserved in type specimen, but outline just visible.

Thorax: Black, very poorly preserved. Length approximately 3.4 mm.

Wing ( Fig. 21 ): Length 10.9 mm. Black fumose, rather wide, apically rounded. Veins strong, pterostigma indistinctive. Costa rather strongly curved, costal cell wide. Subcosta strong and straight. R 2+3 long and horizontal. Costa extends a little beyond apex of R 4+5. M 1 apically strongly curved. Vein measurements: Subcosta 6.8 mm, basal R 3.2 mm, distal R 1 4.9 mm, basal R s 2.3 mm, distal R s 0.9 mm, R 2+3 2.6 mm, R 4+5 4.2 mm, R-M 0.5 mm, distal M 0.4 mm. M 1 4.8 mm, M 2 3.4 mm.

Legs: Poorly preserved, apparently entirely black.

Abdomen: Black, poorly preserved.

Terminalia: Epandrium rectangular, a little longer than broad, rather small. Gonostylus straight, rather long, probably pointed.

Female: Total length 12.7–15.0 mm (N=2). Entirely black.

Head: Length 1.21–1.25 mm (N=2), width 1.29 mm (N=1). Complex eye large, almost as long as side of head. Antenna and palp not visible in the specimens at hand.

Thorax: Length 2.9–3.7 mm (N=2).

Wing: Length 9.4–10.4 mm (N=2), width 3.3–4.4 mm (N=2). Brown fumose, pterostigma not apparent, veins brown throughout, anterior veins strong. Costa extends to half-way between apices of R 4+5 and M 1. Subcosta distinctive and straight. R 2+3 long, running parallel to R 4+5 for most of its length. Crossvein R-M vertical. M-veins apically slightly bent backwards, CuA-veins straight. Vein measurements: basal R 2.6–3.3 mm (N=2), distal R 1 2.5–4.0 mm (N=2), basal R s 2.1 mm (N=2), distal R s 0.8 –1.6 mm (N=2), R 2+3 2.5–2.9 mm (N=2), R 4+5 3.5–4.1 mm (N=2), R-M 0.5 mm (N=2), basal M 3.0– 3.2 mm (N=2), distal M 0.9–1.0 mm (N=2), M 1 3.9–4.1 mm (N=2), M 2 3.1–3.3 mm (N=2), M-Cu 0.45 mm (N=1), CuA 1.9–2.4 mm (N=2), CuA 1 4.7–4.8 mm (N=2), CuA 2 2.8–3.4 mm (N=2).

Legs: very slender, hind tarsus thin. Length of fore femur 3.3 mm (N=1), fore tibia 3.1 mm (N=1), hind femur 3.6 mm (N=1), hind tibia 3.7 mm (N=1).

Abdomen: Length 8.1–10.2 mm (N=2), width 1.9–2.6 mm (N=2). Conical, cerci two-segmented, slender.

Figures

FIGURE 2. Penthetria cimicoides, male, holotype, SLJG, no catalog number.

FIGURES 19–21. 19. Penthetria anthracina, female, wing, NHMW 1937 (no. 23) II.104. 20. Penthetria anthracina, female, wing, NHMW, no catalog number. 21. Penthetria cimicoides, male, wing, SLJG, no catalog number. Scale bar = 1 mm.