Zeliinia occidentalis, 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 : 45

Zeliinia occidentalis , new species

Figures 62, 63 , Plate 6C

DIAGNOSIS: Clypeus with long setae; mediotergite and laterotergites bare, wing membrane without macrotrichia, Sc short, ends free, R 1 short, 1.5Χ longer than r­m, ends proximally at tip of CuA. Genital complex wider than long; gonostyli unilobate.

DESCRIPTION: Body length = 1.79 mm; wing length = 1.22 mm. Head: Eyes bare, forming dorsal bridge, possibly incomplete (vertex and occiput not fully seen due to deformation). Scape and pedicel short, round­ ed. Flagellum 14­segmented, flagellomeres equal in length, apical flagellomeres more narrow than basal ones, with length about twice the length of pedicel, covered with short microtrichia. First flagellomere length 1.6Χ width, preapical is 2.5Χ width. Clypeus setose. Three visible palpal segments, two basal ones about equal in length; apical palpomere long and slender, about twice the length of the penultimate. Thorax: Antepronotum with two setae, proepisternum with one. Scutum with long lateral, dorsocentral, and acrostichal setae. Scutellum with 4 pairs of long setae. Katepisternum larger than anepisternum. Metepisternum small, quadrate, bare. Mediotergite and laterotergites bare. Wing membrane without macrotrichia. R, R 1, and R 5 setulose. Sc short, ends free. R 1 1.5 length of r­m, R 5 more than 4.5Χ length of r­m. Crossveins r­m, tb, and m­cu fused into one oblique vein, with distinct kink at the base of the stem of M 1+2 (M3 section). Stem of M 1+2 and base of M weak. M apparently without fork. M 3+4 and CuA curved gently caudad. Legs: Femora with ventral row of long setae. Coxae relatively short, fore coxa as long as mid and hind ones. Mid and hind tibiae with short bristles. Tibial spurs 1.2–1.5Χ tibial diameter. Tarsal claws with very small tooth. Abdomen densely setose, with long setae. Genitalia rectangular, width 1.6Χ length. Gonocoxites stout, gonostyli simple, pointed, with inner surface slightly curved apically.

MATERIAL: Holotype MCZC 6943, male. Canada: Manitoba, Cedar Lake , coll. F.M. Carpenter.

ETYMOLOGY: The species epithet is Latin meaning ‘‘western’’, referring to origin of the amber

COMMENTS: Z. occidentalis differs from the type species in the structure of genitalia, and although it possesses the same arrangement of flagellar setulae and venation pattern, both species may not be congeneric.

Figures

Figs. 58–63. Zeliinia, n.gen. 58. Z. orientalis, n.sp., holotype AMNH Bu­315. 59. Wing. 60. Male genitalia laterally. 61. Male genitalia dorsally. 62. Z. occidentalis, n.sp., holotype MCZC 6943. 63. Male genitalia.