Identification Keys 205 



6. First tarsal joint on the middle and hind legs 



with a light median band. Light and dark 



scales on the wings. All light scales buff 



colour. Last tarsal joint usually dark-tipped. 



Ochlerotatus sollicitans, Walker. 



First tarsal joint with no light median band. 

 Only dark scales on wings. All light scales 

 snow-white. Last tarsal joint white. 



Ochlerotatus mitchellce, Dyar. 



7. Whitish bands on abdominal segments basal. .8 

 Whitish bands on abdominal segments apical . . 9 



8. Hind tibia with broad whitish band just beyond 



middle. Scales of wings broad. 



Taeniorliynchuspertiirbans, Walker. 

 Hind tibia unbanded. Scales of wings very nar- 

 row.. Ochlerotatus tccniorhynchus, Wiedemann. 



9. Basal joint of tarsi with whitish band in middle 



Tibiae distinctly spotted with white. (L^cA uj^JyiaJt. 

 Grabhaiuia jauuikencis, Theobald. 

 Basal joint of the tarsi unbanded. Tibiae not 

 distinctly spotted with white. 



2 ^n/pk; Grabhamia pygmcetm, Theobald. 



10. Tarsi, or at least the hind ones, distinctly bi- 



coloured, blackish, or brown, and white ....11 

 Tarsi unicolorous 37 



1 1. First four joints of tarsi both basally and apically 



banded with white 12 



First four joints of tarsi not both basally and 

 apically banded with white (sometimes entirely 

 white) 18 



12. Thorax with both very dark and light scales ar- 



ranged in distinct stripes 13 



Thorax not distinctly striped, the scales chiefly 

 yellow or brown . , 16 



