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

RIBEIRO, H. & RAMOS, H. Cunha -- <strong>Research</strong> on the mosquitoes of Angola X
--Head setae B and C about as long as head, obviously
plumose; seta d single or bifid .............................
361 Pecten spines with 4-6 fairly evenly spaced ventral
denticles of about the same size which reach to near
the tip; head seta d bifid beyond the middle in the
sole described larva ............................................
--Denticles of pecten spines often less in number and
always irregular in size and position and not extend-
ing along the whole ventral side of the spine; seta
d single ...........................................................
37 1 None of the pecten spines with more than 2 basal
denticles; antenna infuscated only beyond tuft ......
--Usually, some of the pecten spines with 3 or more
basal dentic]es, but if none has more than 2 such
denticles then antenna infuscated both at base and
beyond tuft ........................................................
36
insignis
37
perfuscus
381 Lateral seta of saddle minute, with 4-6 branches;
the most proximal subventral tuft of siphon proximal
to the most distal pecten spine; comb with about
25 scales .......................................................... () telesilla
--Lateral seta at most 3-branched (occasionally with 4
branches) about 1/,-t/2 length of saddle; usually all
subventral tufts placed distally to the distal end of
pecten; comb with about 40 or more scales ............ 39
39--Siphon index about 10 or more ...........................
--Siphon index about 9 or less .............................
Siphon index about 8 or 9; lateral seta of saddle
single or double .................................................
38
decens
in part
40
decens
in part
invidiosus
in part
(x) On about 40 per cent of the Angolan larvae of telesilla none of the pectcn
spines had more than 2 basal dentitles.
Estud., Ens. e Doc.- 134 49