Protognoriste nascifoa, 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 : 19-20

Protognoriste nascifoa , new species

Figures 17, 18 , Plate 2D

DIAGNOSIS: RS base and the base of the M 3+4 and CuA fork very basally. R 1 length 4Χ r­m.

DESCRIPTION: Body length = 1.09 mm; wing length = 1.05 mm. Head: Occiput and frons setose. Pedicel and scape wider than flagellomeres. Flagellum 14­segmented, flagellomeres cylindrical, length about equal to width. Face wide, quadrate. Clypeus setose, palpi 2­segmented, basal palpomere swollen, apical one very small. Eyes with incision, forming incomplete eye bridge (possibly artifact, face deformed). Thorax: Proepimeron contacts katepisternum. Anepisternum width 1.5Χ height, with distinct cleft posteriorly. Laterotergites, mediotergite and metepisternum with very short trichia. Scutum with numerous erect setae. Metepisternum with long anteriodorsal process touching katepisternum. Wing: Sc very short, free. Costa produced beyond R 5 one­third distance between R 5 and M 1 apices. RS base situated proximally, faint, oblique. R 1 length 4Χ that of r­m. Crossvein r­m weak, 4Χ shorter than R 1. M 1 originates at distal third of wing, curved at base. Base of the M 3+4 and CuA fork at the level of RS base. Legs: Hind coxae short­ er than mid ones. Fore coxae with long anterior setae, mid and hind ones with apical setae. Tibial setulae not in rows except apical half of hind tibiae. Hind tibiae long, swollen somewat at apex, with dorsal row of bristles and apical comb of setae. Tibial spur length 1.0–1.3Χ tibial diameter. Abdomen setose, segments short. Genital complex wider than long. Gonocoxites fused. Gonostyli with one outer and two inner lobes.

MATERIAL: Holotype AMNH Bu­434, male. Myanmar: Katchin , from amber mines near Myitkyina.

ETYMOLOGY: The species epithet derived from U.S. National Science Foundation, a generous sponsor of this and other fossil insect research at the AMNH.

Figures

Figs. 15–18. Protognoriste, n.gen. 15. P. amplicauda, n.sp., holotype PIN 3426/257. 16. P. goeleti, n.sp., holotype AMNH Bu­406. 17. P. nascifoa, n.sp., holotype AMNH Bu­434. 18. P. nascifoa, male genitalia.