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

RIBEIRO, H. & RAMOS, H. Cunha -- <strong>Research</strong> o, the mosquitoes of Angola -- X
2.9 to 93.6 (mean 29.7) g/1 (NaCl), confirming that thalassius is one
of the most halophilic Angolan mosquitoes.
In 7 out of the 36 breeding sites of C. thalassius here recorded no
larvae of other mosquitoes were found. In the remainder 29 biotopes
the following species were associated with thalassius, by decreasing
order of frequency: Anopheles listeri (17 times); An. azevedoi (13),
Aedes natronius (8), Culex pipiens pipiens (5), Ae. durbanensis angolae
and Ae. irritans (4 times each), C. simpsoni (3), C. tritaeniorhynchus
(twice), and An. gambiae, An. pretoriensis, C. guiarti, C. pipiens quinquefasciatus,
C. theileri, C. univittatus and Uranotaenia bilineata, only
once. It is quite interesting to note that the species most often found
as associates of C. thalassius are also halophilic mosquitoes or, at least,
showing some degree of tolerance as to the chloride content of the
breeding water.
Most of our adult specimens were reared in the laboratory, though
24 females were also caught in the wild. Of these, 6 females were
caught when biting man in the open, at about 19.00 h., 17 other females
(15 unfed and 2 freshly fed) were caught at rest inside human
habitation (including walls of bedrooms) at several hours from 6.00
a.m. to about 24.00 h. Finally, another female was caught at about
10.00 a.m., when resting in a rock-hole near salt works.
These observations seem to confirm the main characteristics of
C. thalassius, as they were already put into evidence in Lobito (34):
halophily, anthropophily and exophagy.
7.5.26--Culex (Culex) theileri Theobald, 1903
Culex theileri was recorded (as C. creticus) for the first time in
Angola already by F. C. Wellman (78), from the Bid area. Much later,
it was again recorded by G5ndara (10) (11), from Bundas, and by
Brook Worth & Paterson (12), from N'Giva.
MATERIAL EXAMINED. CALAI, 4 9, 3 plus 69 larvae, 3-11.VI.1965,
23-24.V. 1967 and 15.VI. 1967; CUANGAR; l 9, V. 1965; DIRICO, 1 9, VI. 1965;
FOZ DO CUNENE, 2 larvae, 22.V. 1969; JAMBA, 1 larva, 1971; MO(AMEDES,
5 9,4 plus 9 larvae, 18-26.X.1967; MUTANGO, 1 larva, 12.VI. 1967; NANGURA,
2 9, 21 larvae, 7-11.VI. 1965; PANDA, 1 9, VI. 1965. All these are new locality
records.
E, vtud., Ens. e Doc.- 134 709