Apolephthisa bulunensis, BLAGODEROV & GRIMALDI, 2004

BLAGODEROV, VLADIMIR & GRIMALDI, DAVID, 2004, Fossil Sciaroidea (Diptera) in Cretaceous Ambers, Exclusive of Cecidomyiidae, Sciaridae, and Keroplatidae, American Museum Novitates 3433 (1), pp. 1-76 : 27-28

Apolephthisa bulunensis , new species

Figures 31, 32 , Plate 3E

DIAGNOSIS: Sc short, ends before RS base. Gonostyli with distinct rounded apical lobe and long inner process.

DESCRIPTION: Body length = 2.24 mm; wing length = 1.46 mm. Head: Eyes slightly emarginate near antennal base. Flagellum with 14 cylindrical flagellomeres, covered by trichia equal to 0.5Χ flagellomere diameter. Palpi rather long; antepenultimate segment oval, broadened; penultimate and apical segments long and slender, together equal to fore coxa in length; apical segment slightly clubbed at apex, with several short setae. Palpomere length ratio 1:2:4. Thorax: Scutum with lateral, dorsocentral, and acrostichal rows of short setae. Mediotergite bare. Wing: Veins R 1, R 5, M 1, and M 2 with setae. Sc meets C before RS base. R 5 almost straight. Costa ends beyond tip of R 5 onefifth the distance between tips of R 5 and M 1. M 1, M 2, and M stem weak. Base of M 3+4 absent. Legs: Hind coxae without posterior setae. Abdomen setose, with 7 visible segments, 8th one small and retracted. Gonocoxites long, stout, thinner apically. Gonostyli with rounded apical lobe, bearing dorsoventral row of bristles and long inner process, ending in a short spur.

MATERIAL: Holotype PIN 3963 /4, male. Russia: Taimyr Peninsula , Bulun, coll. 1976.

3+4

ETYMOLOGY: The species epithet is toponymic.

COMMENTS: Given the current low diversity of the genus, it would seem highly improbable for three fossil species to occur unless the genus was more diverse and abundant in the past.

Figures

Figs. 31–34. Apolephthisa and Synapha. 31. A. bulunensis, n.sp., holotype PIN 3963/4, reconstruction of wing venation. 32. Male genitalia. 33. S. longistyla, n.sp., holotype MCZC 6944, reconstruction of wing venation. 34. Male genitalia.