Sphaerophoi'ia. 



339 



Fig. 128. 



S. menthastri d". 



Fifth dorsal abdomi- 



nal segment, showing 



the unsymmetrical 



hind margin. 



latter is not quite symmetricai, but its hind margin 



has on the right side a small, somewhat triangular 



outshoot (fig. 128); on the ventral side there are 



likewise five normal segments. The genitalia are 



large and rather curious; on the left side lie the 



small sixth and seventh segments, the eighth lies 



at the end, and between it and the ninth there 



is on the right side a somewhat large connecting 



membrane; the ninth segment, the hypopygium, 



forms a large, oval, ball-shaped part, bent in under 



abdomen and lying symmetrically or almost so; 



this part is curiously built, for while in the other 



genera the ninth segment is more or less deeply 



incised at the end and the small outer lamellæ 



(tenth segment) lie in this excision, these lamellæ lie here on the 



dorsal (downwards turned) side of the ninth segment somewhat before 



the middle and quite surrounded of the ninth segment (fig. 129); this 



would indicate the curious faet that the tenth segment is quite im- 

 bedded in the ninth, no doubt a seeondary 

 development ; there is also seen a suture streteh- 

 ing from the lamellæ to the end of the hypo- 

 ■^ pygium, indicating the incision. The hypo- 

 pygium has as usual at the end two clasping 

 appendages or claws, which are here large, some- 

 what bifurcate with an upper branch stretching 

 backwards and a lower branch curved down- 

 wards (when the hypopygium is stretched out 

 backwards); the upper branch has in most 

 species long, tufted hairs. In the female the 

 abdomen has as a rule seven visible segments, 

 generally also a small eighth is seen. Legs 

 somewhat slender, simple; hind tibiæ with the 

 usual slight incurvation towards apex on the 

 posterior side; the legs are short-haired, also 

 the hairs on posterior side of the anterior 

 femora and on front side of the hind femora 

 rather short; the hind femora have a narrow, 

 bare stripe below, at all events at the apex, 



Fig. 129. S. scripta ^. g^^^ ^^ ^^^ species {scripta) the hairs on both 



Apical part of abdomen ^.^^^ ^^ ^^^ ^^^ ^^.^^^ ^^^ ^^^^^^^^ -^ 



With genitalia seen from ^ ,";. n j i j 



below; 3—8 third to ^he male. Claws and pulvilh well developed; 

 eighth segment. empodium short, thread-like with a broader 



