. Bulletin. Natural history; Natural history. Nov., 1980 Irwin & Lyneborg: The Genera of Nearctig Therevidae 261. Fig. 200-207. — Phycus brunneus (Wied.) male terminalia. 200. — Gonocoxites with appendages land aedeagus in dorsal view. 201. — Gonocoxites and rigtit gonostylus in ventral view. 202. — Ventral : epandrial sclerite. 203. — Epondrium with appendages in dorsal view. 204. — Genitalia in lateral view. '205. — Right gonocoxile and gonostylus in internal view. 206. — Tergile 8. 207. — Sternite 8. Scale: . mm. I at its narrowest from as wide as to more than twice as wide as ocell


. Bulletin. Natural history; Natural history. Nov., 1980 Irwin & Lyneborg: The Genera of Nearctig Therevidae 261. Fig. 200-207. — Phycus brunneus (Wied.) male terminalia. 200. — Gonocoxites with appendages land aedeagus in dorsal view. 201. — Gonocoxites and rigtit gonostylus in ventral view. 202. — Ventral : epandrial sclerite. 203. — Epondrium with appendages in dorsal view. 204. — Genitalia in lateral view. '205. — Right gonocoxile and gonostylus in internal view. 206. — Tergile 8. 207. — Sternite 8. Scale: . mm. I at its narrowest from as wide as to more than twice as wide as ocellar tubercle, wider in female than in male of same species; eye margins Oiily slightly diverge from level of ocellar tubercle toward genae; frons bare or with sparse, scanty pile, its pattern composed of shining black areas and tomentose areas; face and gena without pile; head slightly to distinctly protrudes at antennal level; facial and genal calli absent; head depth X antennal length; ratio of lengths of scape and flagellum differs greatly among species, in the unnamed North American species (Fig. 36) scape about as long as flagellum; flagellar style terminal, two segmented, with a \ery small terminal spine; palps two segmented (Fig. 34). Thorax. — np 1-2, sa 1, pa 1, dc 0-1, sc 1; mesonotal pile short, uniform, erect, ])ale or blackish; prostemum bare in and around central depression; pleural pile very short and sparse. Wing. — Cell ma usually closed and petiolate, rarely open; veins Ri and R5 about same length; cell r4 as long as wide at apex; ground color hyaline to rather intensively brown, clouding very apparent near apex of wing. Legs. — Fore coxa moderately long, sparsely haired, and with 1 or 2 slender apical setae; middle coxae bare on posterior surface; all femora without setae; tibiae have very short setae. Abdomen. — Slender, especially in male, as wide as long, laterally com- pressed toward apex; dorsum convex, shin


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