Microthereva

Webb, Donald W., 2006, The neotropical genera Microthereva Malloch and Peralia Malloch (Diptera: Therevidae: Therevinae), Zootaxa 1295, pp. 1-27 : 2

Key separating Microthereva and Peralia

1. Parafacial setae elongate: flagellum with subapical style ( Fig. 1 ); setae dark brown medially on scape and pedicel; male ventral apodeme expanded anteriorly, anterior margin truncate ( Fig. 8 ); female with spermathecal sac duct short, less than length of furca, expanding anteriorly to form one elongate sac ( Fig. 10 ) .. Microthereva Malloch

­ Parafacial setae absent; flagellum with apical style; setae absent medially on scape and pedicel; male ventral apodeme narrow, bifurcate anteriorly ( Fig. 26 ); female with spermathecal sac duct over five times length of furca, bifurcating anteriorly to form two enlarged sacs ( Fig. 28 ) .......................................................................... Peralia Malloch

Figures

FIGURES 1 – 10. Microthereva argentiventris. 1. Antenna. 2. Tergite 8, epandrium, cerci, hypoproct, dorsal view. 3. Sternite 8, gonocoxite, ventral view. 4. Gonocoxite, dorsal view. 5. Gonocoxite, lateral view. 6. Gonostylus, lateral view. 7. Aedeagus, dorsal view. 8. Aedeagus, ventral view. 9. Aedeagus, lateral view. 10. Female internal reproductive organs. Scale = 0.1 mm. Abbreviations: C = cercus, CD = common duct, DA = dorsal apodeme, Dp = distiphallus, EA = ejaculatory apodeme, Epa = epandrium, F = furca, Gs = gonostylus, Gx = gonocoxite, H = hypandrium, Hpt = hypoproct, Igp = inner gonocoxal process, Sp = spermatheca, Spd = spermathecal duct, SpS = spermathecal sac, SS = sensory seta, S 8 sternite 8, T 8 = tergite 8, VA = ventral apodeme, VL = ventral lobe.

FIGURES 20 – 29. Peralia vittata. 20. Tergite 8, epandrium, cerci, hypoproct, dorsal view. 21. Sternite 8, gonocoxite, ventral view. 22. Gonocoxite, dorsal view. 23. Gonocoxite, lateral view. 24. Gonostylus, lateral view. 25. Aedeagus, dorsal view. 26. Aedeagus, ventral view. 27. Aedeagus, lateral view. 28. Female internal reproductive organs. Peralia hermanni. 29. Female internal reproductive organs. Scale = 0.1 mm. Abbreviation: LEP = lateral ejaculatory process, SpSd = spermathecal sac duct.