Nedocosia, 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 : 36

Nedocosia , new genus

DIAGNOSIS: Three ocelli, lateral ones do not contact eye margin. Sc merges with R. R 1 2–3Χ length of r­m. Veins of median and cubital forks lightly sclerotized. Base of M 3+4 and CuA fork lies between levels of base of r­m and M 1 –M 2 fork. Tibial bristles absent.

TYPE SPECIES: Nedocosia exsangius , n.sp.

ETYMOLOGY: The genus name is derived from the prefix ne­, ‘‘negation’’, and the genus Docosia . The name is feminine.

COMMENTS: This genus is most similar to Docosia Winnertz, 1863 , which consists of 25 extant Palaearctic, 15 Nearctic, and 2 Neotropical species ( Zaitzev, 1994). Seven species of Docosia are known from Baltic amber ( Meunier, 1904, 1916, 1922, 1923) and one from the Oligocene shales of Rott, Germany ( Statz, 1944). The new genus differs by having lateral ocelli not touching the eye margins (undoubtedly plesiomorphic), and by the lack of strong tibial bristles. Differences in sclerotization of anterior veins (Sc, R, R 5) and posterior veins (forks) in the new genus are not as great as in Docosia species. Two species of Docosia described from the Lower Cretaceous of Transbaikalia ( Blagoderov, 1995) may also belong to the new genus, in fact showing affinities to N. novacaesarea .