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

RIBEIRO, H. & RAMOS, H. Cunha -- <strong>Research</strong> o the mosquitoes o[ ,qngola X
31- Venter mainly pale, unbanded (though median longitudinal
dark markings may be present); proboscis pale
beneath .............................................................
--Sternites with dark apical bands or almost completely
dark; proboscis (in female) dark beneath ...............
32- With 2-4 lower mesepimeral bristles () ...................
--With only one lower mesepimeral bristle .............
'33--Tibiae each with a narrow pale ring at base ........... watti
in part
-- Tibiae dark at base or only slightly paler ... pipiens quinquefasciatus
in part
34--Upper fork-cell (in female) from 3.9 to 5.0 (mean
about 4.4) times as long as its stem ........................ pipiens pipiens
in part
--Upper fork-cell (in female) from 2.1 to 3.7 (mean
about 3.0) times as long as its stem ......... pipiens quinquefasciatus
in part
35--Scutal scales almost uniformly reddish-brown; male
palpi all dark ....................................................
--Scutal scales either almost uniformly dark brown
(without obvious reddish tint) or with yellowish and
brown scales intermixed; penultimate segment of male
palpi with a line of white scales beneath ..............
32
35
33
34
decens
in part
361 Pale spot at tip of hind tibia smaller, shorter than
broad; distal - of anterior surface of hind femur
dark ......................................................... trifilatus trifilatus
--This spot on hind tibia more conspicuous, at least
about as long as broad; usually, distal 1/5-1/3 (rarely,
2/5) of anterior surface of hind femur dark ............. 37
(D Among many hundreds of quinquefasciatus specimens from Luanda, a
few males and females were found with 1-2, 1-3, 2-2 and even 2-3 lower mese-
pimeral bristles.
40 Eslud., Ens. e Doc.- 134
36