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

RIBEIR0, H. & RAM08. H. Cunha -- <strong>Research</strong> on the mosquitoes of Atgola -- X
CUANZA RIVER (N. of Calulo), 1 9 2 larvae, 12.VI.1970; CUBAL, 1 9, 1 larva,
12.IX.1970; DALA TANDO, 4 larvae, 25-28.VIII. 1969; DINDE, 5 larvae, 28.V. 1971;
DUNDO, 48 larvae, 18-19.VIII. 1969; DUQUE DE BRAGAN(A, 2 larvae, 15.11.1969;
EBANGA, I 9, 2 $, 3 larvae, 19.IX.1970; GUNGO, 2 larvae, 23.XI.1969;
HUAMBO, 3 9, 2 $ plus 21 larvae, 4-12.V. 1970 and 5-12.V.1971; IMPULO,
5 larvae, 23.II1.1970; JAMBA, 1 larva, 22.I1.1971; LUANDA, I larva, XI.1967;
LUCALA, I larva, 27.VIII.1969; LUCALA RIVER, 4 larvae, 28.VII1.1969; LUINGA,
1 9, 3 larvae, 30.IX and 1.X.1969; SA DA BANDEIRA (20 km W), 1 9,4 larvae,
6.VI.1969; UiGE, 3 larvae, 25.IX.1969; VALE DO LOGE, I 9, 2 plus 2 larvae,
26.IX.1969, all new locality records.
TAXONOMIC NOTES. Larvae of decens, invidiosus and antennatus
are not always surely distinguishable, though this distinction will be often
feasible following our larval key (see under 6), at least in that concerns
samples of Angolan material. The examination of as much as possible
associated adults, however, is always highly desirable.
DISTRIBUTION. Map 15 shows the known distribution of C. decena
in Angola, a mosquito mainly associated there with the West African
biomes (see also Maps 2 and 3).
BIOEC/OIaOGICAL NOTES. 28 out of the 32 breeding places of decens
consisted in several kinds of ground water: rock-pools, usually with
fallen leaves and decaying plants (10), ground pools (9), river margins,
often among masses of filamentous green algae (6) and pools in river
beds (3). Artificial containers were recorded in 4 other instances:
rubber tyros (2), a drum and a cement tank.
Species of genus Culex were most common associates (14) followed
by genera Anopheles (11), Aedes (3), Uranotaenia (2) and Ficalbia (1).
The most common individual species in decens larval biotopes were,
by decreasing order of frequency: Culex tigripes (10), Anopheles coustani
(7), Uranotaenia fusca (5), C. p. piplens and C. univittatus (4) and
C. simpsoni form B and C. telesilla (3). Two breeding places of C.
decens are illustrated by Figs. 8 and 12.
Females were never caught by the writers on humans exposed near
prolific breeding places nor adults were found indoor human habita-
tion, which seems to show that Angolan C. decens is also a zoophilic
mosquito.
76 Estud., Ens. e Doc.- 134