Lactistomyia Melander

Ale-Rocha, Rosaly, 2008, Revision of the Neotropical genus Lactistomyia Melander (Diptera, Hybotidae, Hybotinae), Zootaxa 1692, pp. 1-25 : 4

Key for species of Lactistomyia Melander

1 Hind tibia tubular, without longitudinal furrow; colored stigma; hind femur with clearer apex than the base, complete and regular anteroventral and posteroventral rows of spines, ventral surface wide and flat- tened.............................................................................................................................................................2

- Hind tibia flattened anteriorly, with soft longitudinal furrow; stigma and hind femur variable.................3

2 Hind tibia yellow; hypandrial lobe widened ( Fig. 8 ) ........................................................... L. lepida sp. n

- Hind tibia yellow with subapical brown ring; hypandrial lobe triangular with narrowed apex ( Fig. 31 ) ..... ..................................................................................................................................... L. paranaensis sp. n.

3 Stigma colored ( Figs. 55–57, 60–63 )...........................................................................................................6

- Stigma hyaline ( Figs. 54, 58, 59 )................................................................................................................ 4

4 Scutum with dorsal square shiny area on basal third; hind femur with complete and regular anteroventral and posteroventral rows of spines, ventral surface wide and flattened ................................ L. minuta sp.n.

- Scutum totally pruinose; hind femur with anteroventral and posteroventral rows of spines incomplete and irregular, ventral surface narrow and not flattened.....................................................................................5

5 Hind femur dark brown, clearer apically; wing darker just in the basal extremity ( Fig. 54 ) ....... L. hyalina

- Hind femur homogeneously brown; wing darker besides the basal half ( Fig. 59 ) ...................... L. nigripes

6 Hind tibia with ventral sub-basal tubercle...................................................................................................7

- Hind tibia without ventral tubercle..............................................................................................................9

7 Wing homogeneously brown; femur brown with clearer apex; tubercle of hind tibia reduced ( Figs. 6 , 53); hypandrial lobe with rounded apex.............................................................................................................8

- Wing dark basally, hyaline apically ( Fig. 57 ); femur wholly brown; sub-basal tubercle of hind tibia greatly developed ( Fig. 19 ); hypandrium split apically with two subequal lobes ( Fig. 16 ) ............... L.mammifera

8 Scutellar bristles long ( Fig. 1 ); hypandrial lobe expanded distally, as long as the hypandrium ( Fig. 2 ) ...... ...................................................................................................................................................... L. insolita

- Scutellar bristles short (Fig. 48); hypandrial lobe narrow, as long as half of the length of the hypandrium, with outer lateral preapical rounded protuberance (Fig. 49) ........................................ L. tuberculata sp. n.

9 Pleura clearer than scutum; hypandrial lobe with three-pointed apex ( Fig. 39 ); right surstylus with dorsal margin not folded ( Fig. 41 ) ............................................................................................... L. pulchra sp. n.

- Pleura concolorous with scutum; hypandrial lobe almost truncated distally; right surstylus with folded, slightly sclerotised dorsal margin .................................................................................................. L.serrata

Figures

FIGURES 7 – 14. Lactistomyia lepida, sp. n. Male: 7, scutellum; 8, 9, hypopygium, ventral and dorsal view; 10, 11, left and right surstyli; 12, hind leg. Female terminalia: 13, 14 dorsal and lateral view. Figs. 8 – 11; 13, 14 in the same scale. Scale bar = 0.5 mm.

FIGURES 30 – 37. Lactistomyia paranaensis, sp. n. Male: 30, scutellum; 31, 32, hypopygium, ventral and dorsal view; 33, 34, left and right surstyli; 35, hind leg. Female terminalia: 36, 37, ventral and dorsal view. Figs. 31 – 34; 36, 37 in the same scale. Scale bar: fig. 30 = 0.3 mm; remaining = 0.5 mm.

FIGURES 54 – 63. Wings of Lactistomyia. 54, L. hyalina; 55, L. insolita; 56, L. lepida sp. n.; 57; L. mammifera; 58, L. minuta sp. n.; 59, L. nigripes; 60, L. paranaensis sp. n.; 61, L. pulchra sp. n.; 62, L. serrata; 63, L. tuberculata sp. n.

FIGURES 1 – 6. Lactistomyia insolita. Male. 1, scutellum; 2, 3, hypopygium, ventral and dorsal view; 4, 5, right and left surstyli; 6, hind leg. Figs 2 – 5 in the same scale. Scale bar = 0.5 mm. Abbreviations: cerc, cercus; ej apod, ejaculatory apodeme; epand, epandrium; hypd, hypandrium; ph, phallus; sur, surstylus; ph, phallus; pgt, postgonite.

FIGURES 15 – 19. Lactistomyia mammifera. Male: 15, scutellum; 16, 17, hypopygium, ventral and dorsal view; 18, left surstylus; 19, hind leg. Figs 16 – 18 in the same scale. Scale bar: fig. 15 = 0.3 mm; remaining = 0.5 mm.

FIGURES 38 – 45. Lactistomyia pulchra, sp. n. Male: 38, scutellum; 39, 40, hypopygium, ventral and dorsal view; 41, 42, right and left surstyli; 43, hind leg. Female terminalia: 44, 45, dorsal and ventral view. Figs 39 – 42; 44, 45 in the same scale. Scale bar: fig. 38 = 0.3 mm; remaining = 0.5 mm.