DUEHAM DIPTEEA. 257 



XXXIII. 454. 



19 (16). Dorsum four-striped. 



20 (25). Abdomen with distinct spots arranged in pairs. 



21 (22). Inner side of hind tibiae remarkably bristly. 



(1990. S. qnadrimacidata, Fin.) 



22 (21). Hind tibiae with only the usual bristles. 



23 (24). Three post-sutural bristles. The part of the genitalia 



bent under the abdomen shining black. 



(1993. S. dttplaris, Stein [atrifies, Mde?]) 



24 (23). Four post-sutural bristles. Genitalia not shining 



black. S. duplicata, Mg. (1991) 



25 (20). Abdomen without distinct paired spots. 



26 (27). Abdomen with a triangular spot on the middle of 



each segment. {S. steinii, Schnbl.) 



27 (26). Abdomen with a central stripe or unmarked. 



28 (29). Three post-sutural bristles. Abdomen almost uniform 



grey. ( J 977- M. allotalla, Mg.) 



29 (28). Four post-sutural bristles. Abdomen with a distinct 



central line. 



30 (31). Thoracic stripes distinct, but only quite in front, and 



only the two centre ones. Abdomen unmarked, 

 except a fine central stripe. (M. nebulosa, Stein) 



31 (30). Dorsum distinctly and fully four-striped. Abdomen 



with a central stripe and reflections. • 



(M. ana'lla, Mg.) 



32 (1). Legs wholly or partly yellow. 



33 (64). Legs with at least the base of the fore femora black. 



34 (35). Scutellum translucent yellow, at least at the point. 



M. tincta, Ztt. (1980) 



35 (34). Scutellum not translucent yellow. 



36 (37). Abdomen with a triangular spot on the middle of 



each segment. (2004. S.fiiscata, Fin.) 



37 (36). Abdominal segments without central spots. 



38 (43). Abdomen with a more or less distinct central line, at 



least on the first segment, when viewed from 

 behind. 



39 (40). Hind femora black. (M. sundewalli, Ztt.) 



40 (39). Hind femora yellow. 



Q 



