Primocerioides Shannon, 1927

Steenis, Jeroen Van, Ricarte, Antonio, Vujić, Ante, Birtele, Daniele & Speight, Martin C. D., 2016, Revision of the West-Palaearctic species of the tribe Cerioidini (Diptera, Syrphidae), Zootaxa 4196 (2), pp. 151-209 : 161-162

Primocerioides Shannon, 1927

Primocerioides Shannon, 1927b: 41 . Type Cerioides petri Hervé-Bazin, 1914 .

Frontal prominence much shorter than wide at base. Face with long paraface and large anterior tentorial pit. Facial tubercle nearly absent. Pile on face, frons, vertex, ocelli and dorsal surface of head capsule very long and white; on genae longer, about twice as long as width of profemur. Eye white pilose. Pile on thorax and tergites long. Basisternum higher than wide with rounded dorsal margin and ventral margin with two large triangular extensions (as in Fig. 55 ). Anepisternum and anepimeron separated by a membranous area. Metasternum long pilose without modifications. Procoxa ( Fig. 51 ) broad, about as wide as long, with a short and very weak groove dorsally. Postmetacoxal bridge incomplete. Dorsal lobe of calypter with a fringe of long and dense pile. Tergite II wider than long, not constricted. Callus of tergite I absent. Callus of sternite I narrow and elongate. Tergite VIII white pilose.

Genitalia ( Figs 141–144 ): Dorsal lobe of surstylus elongate, ventro-basal lobe large and rounded; dorsal lobe with long pile on dorsolateral surface and long and densely setose on ventrobasal surface; epandrium round with large membranous area; cercus elongate, triangular with a clear triangular extension medio-ventrally; surstylar apodeme rectangular, not fused, membranous, with sclerotized lateral margins; hypandrium broad, with simple rounded superior lobe and short elongate lingula.

Figures

FIGURES 49 – 55. 49 – 52 Procoxa of Cerioidini species, posterior view: 49 Ceriana conopsoides, male, Russia 50 Ceriana vespiformis, male, Montenegro 51 Primocerioides regale, female, Cyprus 52 Sphiximorpha subsessilis, male, The Netherlands. 53 Basisternum of Ceriana conopsoides, frontal view, male, Russia 54 Mesotrochanter of Ceriana caesarea, ventral view, male, Turkmenistan 55 Basisternum of Sphiximorpha subsessilis, frontal view, male, Greece. Scale line = 0.5 mm (a: 49, 50; b: 51, 52; c: 53 – 55).

FIGURES 141 – 144. Male genitalia of Primocerioides regale (holotype of Sphiximorpha hiemalis) 141 Epandrium and hypandrium, lateral view 142 Hypandrium, ventral view 143 Epandrium, dorsal view 144 Epandrium, ventral view. Scale line = 0.5 mm.