276 F- W. EDWARDS. 



cases of very uncertain value ; the species most easily recognisable as regards 

 hypopygial structure are those {pulcherrimus, multicolor) which have no leaflets 

 on the aedoeagus, but it is impossible to consider a common lack of these structures 

 as indicating relationship. The larvae also are extremely similar and difficult to 

 distinguish. 



Adults. 



1. Abdomen densely scaly ; the scales forming lateral tufts on each seg- 



ment ; last hind tarsal joint white ; female palpi shaggily scaled . . 2 

 Abdomen without lateral scale-tufts ; last hind tarsal joint dark ; 

 female palpi with most of the scales appressed . . . . . . . . 3 



2. Fourth hind tarsal joint all white pnlcherrirmts. Theo. 



Fourth hind tarsal joint mostly dark pharoensis, Theo. 



3. Femora and tibiae pale-spotted . . . . . . . . . . . . 4 



Femora and tibiae not pale-spotted ; abdomen without scales . . . . 5 



4. Abdomen scaly almost to the base . . . . . . . . stephensi, Liston. 



Abdomen without scales, except on cerci . . . . . . costalis, Theo. 



5. Pale wing-markings confined to costa and first vein . . . .rhodesiensis, Theo. 

 Pale markings on all wing- veins . . . . . . . . . . . . 6 



6. Tip of last palpal joint white-scaled . . . . . . . . . . . . 7 



Tip of last palpal joint black-scaled . . . . . . . . . . . . 8 



7. Thorax with hairs only ; last two white rings of female palpi quite 



narrow . . . . . . . . . . • . • • sergenti, Theo. 



Thorax with narrow scales as well as hairs ; last two white rings of 

 female palpi rather broad . . . . . . . . super pictus, Grassi. 



8. Thorax with hairs only ; male aedoeagus with leaflets 



{turkhudi, Theo.), hispaniola, Theo. 

 Sides of mesonotum with distinct narrow scales . . . . . . . . 9 



9. Male aedoeagus with leaflets . . turkhudi var. persicus. n. 



Male aedoeagus without leaflets multicolor, Camb. 



Larvae. 



1. Outer clypeal hair branched .. .. .. .. .. .. .. 2 



Outer clypeal hair simple . . . . . . . . . . . . . . 3 



2. Palmate tufts on abdominal segments i-vii ; outer clypeal hair thickly 



branched . . . . . . . . . . . . . . pharoensis, Theo. 



Palmate tufts on abdominal segments iii-vii ; outer clypeal hair less 

 branched . . . . . . . . . . . . pulcherrimus, Theo. 



3. A rudimentary palmate tuft on first abdominal segment 



costalis, Theo. ; rhodesiensis, Theo. 

 This tuft absent . . . . . . . . . . . . . . . . . . 4 



4. Posterior clypeal hair short ; innermost shoulder-hair much branched 



stephensi, Liston. 

 Posterior clypeal hair long . . . . . . . . . . . . . . 5 



5. Innermost shoulder-hair much branched, plumose . . siiperpictiis, Grassi. 

 Innermost shoulder-hair slightly branched towards tip 



multicolor, Camb. ; ? hispaniola, Theo. ; ? turkhudi, Theo. 



Good distinctions between some of the above larvae have yet to be discovered ; 



possibly some may be found in the markings of the head. The larvae of A . rhodesiensis, 



A. hispaniola and A. turkhudi have not been fully described, and the British Museum 



does not possess sufficient material from which to supplement the descriptions. 



