Isomerocera, Enderlein, 1914

Mason, F. & Rozkošný, R., 2015, Morphology, taxonomy, distribution and relationships of the Afrotropical genus Isomerocera (Diptera: Stratiomyidae), African Invertebrates 56 (1), pp. 75-75 : 81

Key to the species of Isomerocera

1 Two pairs of scutellar spines lying in different planes ( Figs 13, 14 ), female antenna with paired projections on flagellomeres 3–4 only ( Fig. 38 ) ..................... heteraspis

– All four scutellar spines lying in the same plane ( Figs 15, 16 ), female antenna with paired projections on flagellomeres 3–5 ( Figs 64, 65 )......................... quadrilineata

Figures

Figs 11–16.Isomerocera quadrilineata (Fabricius): (11) antenna; ocellar triangle in (12a) frontal and (12b) dorsal view (Abbreviations: aoc – anterior ocellus, loc – lateral ocellus, oct – ocellar triangle, pot – pre-ocellar tubercle).Isomerocera spp., scutellum:I.heteraspis James, female,in (13) posterolateral and (14) posterior view; I. quadrilineata (Fabricius), (15) male and (16) female in lateral view.

Figs 29–41. Isomerocera heteraspis James, (29–35) male holotype and (35–41) female: (29) male body in dorsal view; (30) head in lateral view; (31) antenna; (32) genital capsule; (33) aedeagal complex in (a) ventral, (b) dorsal and (c) lateral view; (34) tergites 6–8; (35) proctiger, cerci and epandrium; (36) female body in dorsal view; (37) head in frontal view; (38) antenna; colour pattern of legs: (39) fore, (40) middle and (41) hind leg.

Figs 42–74. Isomerocera quadrilineata (Fabricius), (42–58) male and (59–74) female: (42) male body in dorsal view, (43) abdomen variation: South Africa, Port St. Johns; (44) head in frontal view; (45) antenna,(46) variation:SouthAfrica,Umgeni River,Nagle Dam; (47)genital capsule,(48) variation: South Africa, Mfongosi; aedeagal complex in (49) ventral and (50) lateral view; (51) tergites 6–8; (52) proctiger, cerci and epandrium; colour pattern of legs: (53) fore, (54) middle and (55) hind leg, variation:South Africa, Durban, (56) fore, (57) middle and (58) hind leg; (59) female body in dorsal view, abdomen variation: (60) South Africa, Eshowe, Dlinza Forest and (61) Democratic Republic Congo, Eala; (62) head in frontal view, Democratic Republic Congo, Bambesa, (63) variation: Cameroon, Sangmelima; (64) antenna, Zimbabwe, Vumba, (65) variation: South Africa, Eshowe, Dlinza Forest; (66) genital furca, (67) variation: South Africa, Eshowe, Dlinza Forest; subgenital plate (68); colour pattern of legs Democratic Republic Congo, Eala: (69) fore, (70) middle and (71) hind leg, variation: South Africa, Ngoye Forest, between Eshowe and Empangeni: (72) fore, (73) middle and (74) hind leg.