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

RIBgIR0, H. & RAMOS, H. Cunha -- <strong>Research</strong> on the mosquitoes of Angola m X
females). All the Angolan material examined by the present writers,
here dealt with, is only provisionally identified as C. ingrami Edws. (see
below).
MATERIAL EXAMINED. CABINDA, 2 larvae, 2 pupae, 19.VIII. 1970; CA-
BUTA, 1 larva, 12.VI.1970; CARLAONGO, 1 , I larva, 5.XI.1969; LUCALA
RIVER, 6 larvae, 28.VIII. 1969; MUMBONDO, 2 9, 2 , 15 larvae, 7-8.V.1970;
MUXIMA, 17 larvae, 30.1V.1970.
TAXON, OMIC NOTES. Since the original description of C. ingrami
(Ghana males) by Edwards (55) and that of the larvae and pupae by
Macfie & Ingram (56) (57), many larval and some adult (terminalic)
varieties have been described, though not named, by Galliard (58),
Edwards (8), Hopkins (24), Rageau & Adam (59), Peters (60), Service (61),
Pajot (62) and others. It seems quite evident that much of this variation,
particularly that concerning larvae, must be interpreted as polymorphic
in nature. Angolan larvae, however, besides exhibiting a marked polymorphism
of :he kind described by these different authors, constantly
show the presence of a tergal plate on abdominal segment viii, as described
byd Pajot (op. cit.) on Cameroon larvae, which separates them immediately
from ingrami s. str. Moreover, these larvae are associated with
males whose terminalia also show non-negligible differences from those
of both C. ingrami s. str. and of Pajot's form. These are the reasons
why this Angolan form here provisionally determined as C. ingrami is
thought to be, in fact, a distinct though closely allied taxon, to be dealt
with in another paper.
DISTRIBUTION. Map 17 shows the known distribution of the Angolan
form of C. ingrami s. l. It is assumed that the previous Caxito record
by B. Worth & Paterson also concerns this Angolan form.
BIOECDIaOGICAL NOTES. These notes refer exclusively to the Angolan
form examined by the writers, closely allied to ingrami. This is a ground
water breeder, as it is the case for all the taxa of the group. Both stagnant
and running water are used by the present form, as it can be seen from
the 8 larval biotopes recorded by the writers: niches and pools at river
edges (3), rain-water ground pools (2), overflown river margins (2)
and one stream. The breeding water was either turbid or clean, being at
Estud., E.s. e Doc,- 134 83