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

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RIBgIRO, H. & RalVI08, H. Cunha -- <strong>Research</strong> o the mosquitoes of Angola X belonging to the first group, including all man-dependant water collections influenced by rains, were found, by decreasing order of frequency: old rubber tyres (10), barrels and drums (4), flower vases (2), cement water tanks (2), abandoned domestic utensils (2) and a discarded tin of sardines. As sylvatic breeding places, consisting in naturally occurring exclusively climate-dependant for water, were recorded: holes and axils in living trees such as Ficus sp. and Ricinodendron sp. (7), bamboo holes and stumps (5), holes in rotting tree (banana, papaya and baobab) trunks (3), and a rock-pool in gallery forest covered with decaying fallen leaves. Fig. 4 shows a typical larval biotope of C. nebulosus. The breeding water was always markedly shadded and ranged from clear limpid water to foul water with high organic matter content. The figure found for the pH of the breeding water in a Ficus hole was 7.0. In 12 out of the 37 larval biotopes recorded for C. nebulosus no other associated mosquito larvae were found, 8 of which in peridomestic and 4 in sylvatic habitats. In peridomestic habitat, the species found in association with neb.:losts were: C. p. quinque/sciatus (in 6 biotopes), A e. aegypti (5), C. tri/ilatus (2) and C. duttoni, C. horridus, C. univittatus and E. chrysogaster once each. In sylvatic habitat, the associated species were: (a) in holes and axils of living trees, Aedes spp.: calceatus (3), /ulgens (3), metallicus (2) and aegypti and marshalii once each; (b) in bamboos, Ae. angustus and E. chrysogaster, also only once, and (c) in the sole rock-pool recorded, E. chr?ogaster and U. mashonaensis. The apparent exclusion of C. tigripes as an associated species of C. nebulosus is perhaps a real one and it seems particularly intriguing as both species haYe partly common potential breeding areas. Though being the most common of the Ethiopian Culiciomyia, C. nebulosus is known to be also a zoophilic mosquito (35) (37), most probably an ornithophilic species. 7.5--Subgenus Culex Linnaeus, 1758 Nominal subgenus, with near 200 described species, is the largest of all Culex subgenera. Though subgenus Culex is represented in all Zoogeographical Regions, the group is mainly Ethiopian and Neotropical. From the 66 species of this subgenus occurri_g in the Ethiopian Estud., Ens. e Doc.- 134 65
RIBgIRO, H. & RAMOS, H. Cunha -- <strong>Research</strong> on the mosquitoes of Angola q X Region, 3 of them are shared with other Regions (Palaearctic, Oriental and Australian) and other 6 species occur only outside the African Continent (Madagascar, Seychelles and Silo Tom). 31 out of the 57 species of Culex s. str. endemic in Africa South of Sahara are here recognized as belonging to the mosquito fauna of Angola (Table 1). Group A (or sitiens) of Edwards (46), chiefly Oriental, is well represented in Angola by 13 of the about 20 Ethiopian species of the group. The larger Edwards' group B (or pipiens) is represented in the Ethiopian Region by some 35 species belonging to series pipiens and decens. Pipiensseries is mainly an East African subgroup and is poorly represented in Angola by only 7 species, some of which may prove to be subspecifically distinct (e.g. chorleyi, toroensis). Decens-series, chiefly West African, is in turn very well represented in Angola by 13 taxa, some of which may also prove to be new (e.g. our ingrami-like form). In the systematic account of the Angolan members of the subgenus that follows species were not grouped, each taxon being treated in alphabetical order. Distributional maps (Maps 8-17), however, were made by grouping the species according to the main groups of Edwards. 7.5.1--.Culex (Culex) annulioris Theobald, 1901 C. annulioris was firstly recorded in Angola by Gamble (7) from Sio Salvador, and later by Edwards (8), from Bi (Wellman coll.). In 1956, this species was recorded again by Gfindara (10) (11), from Dilolo, Cuchi and Huambo. MATERIAL EXAMINED. ALTO CATUMBELA, 1 larva, 17.IX.1970; BE- LIZE, 1 /, 8 larvae, 20.VIII. 1970; BOCOIO, 7 ?, 5 3, 25 larvae, 7-10.IX.1970; BUCO ZAU, 2 larvae, 20.VIII. 1970; CAALA, 1 8, 13.V.1970; CABINDA, l 4 8, 10 larvae, 18-26.VIII. 1970; CALULO. 1 larva, 9.VI.1970; CAPUNDA, 4 larvae, 16-17.VI.1970; CARIANGO, 2 8, 1 larva, 18.X.1969; CEILUNGA, 9 larvae, 10-11.IX.1969; CHIQUITE, 1 8, 2 larvae, 29.V.1970; CHITEMBO, 1 18.VI.1970; CUANDO, 8 9, 11 /, 4 larvae, 26.V.1970 and 12.V. 1971; CUBAL, 2 $, 5 8, 9 larvae, 12-15.IX.1970; DALA TANDO, 1 9, 3 8, 3 larvae, 25.VIII. 1969; DUNDO, 1 larva, 19.VIII.1969: EBANGA, 10 9. 12 8, 29 larvae, 17-19.IX.1970; I-IUAMBO, 66 $, 78 /, 105 larvae, several dates from 25.I.1964 to 14.V. 1971; LONIAVA, 1 , 4 8, 7 larvae, 17-18.IX.1970; LUCE RIVER, 1 larva, 17.VI.1970; LUINGA, 1 /, 10 larvae, 1.X.1969; MALAIXTTE, 8 , 3 8, 10 larvae, 21-22.I.1970; 66 Zstud., Ens. e Doc.- 134
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VOLUMES J/ PUBLICADOS NA COLEC(3,O
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CDU 576.895.711 (673) JUNTA DE INVE
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8-- RELATION TO DISEASE Genus Culex
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ACKNOWLEDGEMENTS The writers are gr
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REFERENCES 1--ROQUE, A. B.--
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