Protognoriste goeleti, 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

Protognoriste goeleti , new species

Figure 16 , Plate 2C

DIAGNOSIS: R 1 length 1.8Χ that of r­m.

DESCRIPTION: Body length = 1.21 mm; wing length = 0.95 mm. Head: ovate, height ~1.5Χ width in profile. Occiput and postgena densely setose. Antennae attached below the middle of the head. Scape and pedicel subconical, wider than flagellum. Flagellomeres cylindrical, length 1.1–1.5Χ the width. Eyes setose, ovate, without incision, facets round, close. Clypeus bare. Two palpomeres seen: basal one ovate, length 2Χ the width, apical round, 4Χ shorter than basal. Thorax: Scutum irregularly setose. Anterior parapsidal suture distinct. Scutellum small. Anepisternum with several setae. Proepimeron touches mesepisternum at anepisternal suture. Anepisternum with deep cleft in the middle. Laterotergite shifted dorsocaudally, so that metepisternum contacts katepisternum for some distance, not in a point. Laterotergites and metepisternum with short hairs. Mediotergite short. Meron at mid coxae large. Wing membrane with microtrichia not arranged in rows. Costa ends beyond tip of R 5, at one­fourth length between tips of R 5 and M 1. Sc very short, ends free. Humeral cross­vein oblique. R 1 short, about 0.4Χ wing length. RS base short, transverse. R 5 about 0.8Χ wing length, almost straight. M 1 slightly sigmoid, confined to apical third of wing, ends at tip of wing. Stem of M and M 2 absent. Crossvein r­m horizontal, very weak, meets M 3+4 and CuA stem, its length 1.2Χ more than length of R 1. M 3+4 and CuA fork 1.7Χ stem length, its base between levels of RS base and tip of R 1. M 3+4 and CuA curved gently. Legs: Fore tibia 1.25Χ shorter than fore femora. Tibial and tarsal setulae not in rows. Hind tibia with 15 dorsal bristles. Tibial spurs 2Χ the diameter of tibia. Hind tibiae with apical comb of short setae. Fore coxae with dense anterior setae, mid and hind coxae with setae in apical part, hind coxae without posterior setae. Abdomen insertion broad. Abdomen shorter than wings. Cerci with large basal and small round apical segments.

MATERIAL: Holotype AMNH Bu­406, female. Myanmar: Katchin , from amber mines near Myitkyina.

ETYMOLOGY: The species epithet in honor of Mr. Robert Goelet, for his generosity in funding purchase of specimens and the authors’ work.

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.