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

RIBgIR0, H. & RAM08, H. Cunha <strong>Research</strong> on thc mosquitoes of Angola
As to the larvae, they are also in good general agreement with the
description by Hopkins (24), always bearing short siphonal tufts. In the
specimens from Cariango, however, the larvae lack the ventral part of
the siphonal of spines, as it was the case of seen by Hopkins (ibidem).
In view of the above cited peculiarities of the terminalic and larval
characters in the Cariango chorleyi population, this would be perhaps
better treated as a subspecies. We feel, however, that further knowledge
on the morphology and distribution of vansomereni, chorleyi and astri-
dianus is needed before new taxonomic decisions be taken concerning
this group.
DISTRIBUTION. Map 14 shows the known distribution of C. chorleyi
in Angola, all the five localities being at 1,500 meters and over in altitude.
larvae.
BIOEOOLOGICAL NOTES. All our adults of chorleyi were reared from
3 out of the seven breeding places recorded for C. chorleyi were
shallow vegetated river margins, other 3 larval biotopes were irrigation
canals with emergent vegetation (and some decaying in one
of them), while in the other instance the larvae were found in a grassy
ditch. The pH of the breeding water, measured in six breeding places,
was 5.8 in one of them and 5.4 in all the other. Larvae of An. cydippis,
marshalii, squamosus, C. annulioris, duttoni, tigripes, toroensis and univittatus
were found as associated species. Fig. 7 shows a breeding place
of chorleyi.
C. chorleyi seems to be a zoophilic mosquito of the Humid Montane
Zone (Map 3).
7.5.7--Culex (Culex) decens Theobald, 1901
C. decens was recorded for the first time in Angola by Gamble (7)
from So Salvador, and later by Gndara (10) (11), from Capelongo.
MATERIAL EXAMINED. BIBALA, 2 larvae, 2.V.1969; BOCOIO, 8 $, 4 /5,
8.IX.1970; CABINDA, 1 larva, 14.III. 1971; CAINDE, 5 larvae, 12.V.1969; CAR-
LAONGO, 2 /5, 9 larvae, 31.X and 5.XI.1969: CUANGAR, 5 $. 7 , 4.V.1966;
Estud., Ens. e Doc.- 134 75