REPORT ON A COLLECTION OF MOSQUITOES OR 
CUL1CIDAE, etc., FROM GAMBIA, AND 
DESCRIPTIONS OF NEW SPECIES 
By F. V. THEOBALD, M.A. 
THE collection of Culicidae and other blood-sucking Diptera, made by Dr. Dutton during his 
visit to Gambia, contains some three hundred Culicidae, included in the following genera : 
Anopheles,"" Stegomyia, Culex, Mansonia, XJranotaenia, and Corethra. Altogether there are seventeen 
species of Culicidae as follows : three Anopheles, three Stegomyia, seven Culex, one Mansonia, and a single 
Uranotaenia and Corctlra. There is also a distinct variety of Anopheles eostalis and Anopheles funestus. Besides 
Culicidae, there are some specimens of Psychodidae, or Owl Midges, of the genus Phlebotomus, probably a new 
species, and several specimens of the common West African gadfly {Tabanus dorsovitta Walker). A number 
of one of the Tsetse flies, Glossina longipalpis Wiedmann var., tachinoides, Westwood, were also taken. 
This insect, closely related to the Tsetse fly {Glossina morsitans), is called by Dr. Dutton the 
small Mangrove fly. It is very prevalent up the Gambia river, and comes on board the launches and 
bites viciously. It is or particular interest, as the case of Trypanosoma Dr. Dutton found in Bathurst 
was in an Englishman, who was master of the Government launch, living on board, and was frequently 
bitten by this species of Glossina. It is quite possible that this species of Glossina acts in the same way as 
G. morsitans in the animal Tsetse disease. 
The collection contains no new Anopheles bat three distinct varities, three new species of Culex, and a 
distinct variety of a previously known one, also a new Stegomyia and a Goretha. The series of Anopheles 
funestus is most interesting, as it shows very great Variation, particularly in the colour of the vein-scales 
and the position of the cross-veins, which I had found constant before in this species, and which I took 
to be of some specific value. Great variation is also to be noticed in a large series of Culex Duttoni 
(Thko ) This species is of particular interest, as it serves as one of the intermediate hosts of Filaria 
noeturna. Culex fatigans (Wied.) was also found to act as an intermediate host of this Haematozoon. In a 
new banded proboscis species {Culex anarmostus) a filaria (sp. incert.) was found in the thoracic mucles. 
A list of the species, with notes and the descriptions of the Stegomyia, Culex, and Corethra, are here 
appended, and also a description of the varieties of previously known species. 
LIST OF CULICIDAE AND OTHER DIPTERA TAKEN AND BRED 
BY Dr. DUTTON 
A. CULICIDAE. 
1 . Anopheies eostalis. Loew. 
i a. Anopheles eostalis. Var. me/as n.v. 
2. Anopheles pharoensis. Theobald. 
3. Anopheles funestus. Giles. 
3a. Anopheles funestus. Var. umbrosus n.v. 
3a. Anopheles funestus. Var. subumbrosus n.v. 
4.. Stegomyia faseiata. Fabricius. 
5. Stegomyia sugens. Wiedemann. 
* The old genus Anopheles is now subdivided into several genera ; eostalis comes in Pyretophorus, pharoensis in Cellia, and 
funestus in Myzomyia. 
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