Amygdalops, Lamb, 1914

Jindr, Rohác, ich & ek, 2004, Revision of the genus Amygdalops Lamb, 1914 (Diptera: Anthomyzidae) of the Afrotropical Region, African Invertebrates 45, pp. 157-221 : 212

Key to species of Amygdalops of the Afrotropical Region and adjacent islands

1 Wing membrane unicolorous, pale ochreous; apical section of CuA 1 long, 3 times as long as dm-cu ( Fig. 122 ). Mesonotum laterally yellow, with brown scutellum and medial band between dc lines. Female S7 strongly broadened anteriorly ( Fig 24 ). Male unknown .......................... A. trivittatus Frey, 1958

– Wing with dark and pale markings, at least with a dark subapical spot ( Figs 123-132 ); CuA 1 short, at most twice as long as dm-cu. Mesonotum with different colour pattern. Female S7 not or slightly broadened anteriorly .................... 2

2(1) R 4+5 straight or indistinctly bent. Wing membrane without white spot distal to dm-cu cross-vein, at most with paler (to whitish) area between C and R 4+ 5 in front of dark subapical spot ( Figs 123-128 ) .................................................. 3

– R 4+5 distinctly sinuous and wing membrane with a rounded white iridescent spot between R 2+3 and R 4+5 and between M and wing margin distal to dm-cu cross-vein ( Figs 129-132 ) ............................................................................. 9

3(2) Haltere pale yellow including knob .............................................................. 4

– Haltere ochreous, with brown to dark brown knob ...................................... 6

4(3) Frons medially distinctly darker (ochreous to brown) than orbits (yellow to ochreous), the latter covered by whitish silver microtomentum in anterior half (up to posterior ors). R 4+5 surrounded by darker band contrasting with pale anterior marginal area ( Fig. 123 ) .................................................................. 5

– Frons (including orbits) completely brown in posterior two-thirds; anterior third of frons and relevant part of orbit yellow, the latter without silvery white microtomentum. No darkened band along R 4+5, entire membrane rather uniformly pale brown tinged, only subapical spot darker ( Fig. 125 ). Gonostylus subtriangular, with simple apex ( Fig. 39 ); basal sclerite attached to postgonite dark and ventrally projecting ( Fig. 38 ); apical part of saccus without spines ( Fig. 40 ). Female S7 with pale central spot and dark anteromedial cuspidate structures ( Fig. 42 ) ............................................................. A. simplicior sp.n.

Figures

Figs 122–125. Wings of Amygdalops species. 122. A. trivittatus Frey, female holotype. 123. A. thomasseti Lamb, male (Uganda). 124. A. obtusus sp.n., male paratype (Kenya). 125. A. simplicior sp.n., male paratype (Nigeria). Scales = 0.5 mm.

Figs 21–25. Amygdalops trivittatus Frey, female holotype. 21. Postabdomen + 5th segment, dorsal view. 22. Ventral receptacle, lateral view. 23. Genital chamber with internal sclerites and S8, ventral view. 24. Postabdomen + 5th segment, ventral view. 25. Spermathecae. Scales: Figs 21, 24 = 0.1 mm, others = 0.1 mm. For abbreviations see text.

Figs 126–128. Wings of Amygdalops species. 126. A. major sp.n., male paratype (Madagascar). 127. A. acer sp.n., male holotype. 128. A. nigrinotum Sueyoshi & Rohácek, male (Seychelles). Scales = 0.5 mm.

Figs 129–132. Wings of Amygdalops species. 129. A. obscurior sp.n., male paratype (Uganda). 130. A. sparsus sp.n., male paratype (Uganda). 131. A. undulatus sp.n., male paratype (Madagascar). 132. A. poecilus sp.n., female paratype (South Africa). Scales = 0.5 mm.

Figs 35–40. Amygdalops simplicior sp.n., male paratype (Cape Verde). 35. External genitalia, caudal view. 36. Same, lateral view.37.Transandrium, caudal view. 38. Hypandrium and associated structures, lateral view. 39. Gonostylus, sublateral view (widest extension). 40. Aedeagal complex, lateral view. Scales: Fig. 39 = 0.05 mm, others = 0.1 mm.

Figs 41–45. Amygdalops simplicior sp.n., female paratype (Cape Verde). 41. Postabdomen, dorsal view. 42. Same, ventral view. 43. Spermathecae. 44. Internal sclerites, ventral view. 45. Ventral receptacle, lateral view.