Research on the mosquitoes of Angola - Systematic Catalog of ...

RIBgIRO, H. & R.s, MO8, H. Cunha -- <strong>Research</strong> on the mosquitoes of Angola X
301
about 8.5 (5.0-11.25); siphon without sigmoidal curvature
................................................ pipiens quinquefasciatus
Siphon very dark brown ..................................... horridus
in part
Siphon from pale brown to nearly colourless ........ 31
31-- Pecten spines bifid at tip, with one large and some-
times one small basal denticles ..........................
321
331
34--
351
Pecten spines not bifid at tip, often with more than
two basal denticles ..........................................
Usually, with at least some of the subventral tufts
about 1 times the diameter of siphon at point
of attachment, but if not so then preclipeal spines
stout and dark brown .......................................
Subventral tufts smaller, at most about as long as
diameter of siphon, usually shorter; preclipeals slen-
der and paler ....................................................
cinerellus
Ventral brush without unpaired tufts outside the
barred area; subventral tufts of siphon usually with
3-4 (rarely, 2) branches; head seta C 3-branched;
comb a patch of 30-45 scales ..................... tritaeniorhynchus
Ventral brush with unpaired tufts outside the barred
area; subventral tufts of siphon single or bifid, rarely
3-branched; comb of about 50-60 scales ............. 34
Siphonal index about 7-9; antenna infuscated for its
full length; upper caudal seta 3 or 4-branched, with
one long branch and usually other 3 much shorter
ones of which 2 are dorsal and the other ventral
to the main branch .......................................... wigglesworthi
Siphonal index from 10.5 to 16; antenna infuscated
at base and on about the apical 2/.; upper caudal
seta with 2 branches, 'the short one dorsal to the
main branch, as usual . ..................................... kingianus
ß
Head setae B and C only about half length of head,
sparsely plumose; head seta d with 4 or 5 branches
32
33
35
rubinotus
48 Estud., Ens. e Doc. 134