37 
g ' ' . i 
Mosquitoes of New Guinea — PENN 
Genus MANSONIA Blanchard 
Diagnosis. — The two main features by 
which pupae of Mansonia differ from those of 
other mosquitoes are the modification of the 
tip of the trumpet for the purpose of piercing 
plant roots and the replacement of the float- 
hairs by minute simple setae. Also, all setae 
of the body are simple; setae H and K wide 
apart, K much nearer to L and M than to H on 
segment I. Paddles narrow and deeply notched 
at the tip, without setae; both lateral and medial 
margins with small denticles. 
Subgenus Coquillettidia Dyar 
Fig. 20 
DIAGNOSIS. — Trumpet long, mainly cylindri- 
cal, but the meatus narrowed for a short dis- 
tance before base of pinna, and with a line of 
weakness at this point, so that the pinna can 
very readily be broken off; meatus tracheoid 
for the greater part of its length; pinna entire, 
with numerous ridges which presumably serve 
to hold it firmly in the plant root after insertion. 
Abdomen shagreened with minute points, ex- 
cept on more or less circular areas occupying 
the middle one-third of each tergite, these 
areas being practically smooth but outlined with 
an irregular series of fine wrinkles; on the pos- 
terior margins of the tergites the points are a 
little larger and produce a finely serrated edge. 
All the abdominal setae, including A, B, and C, 
minute, pale, and often difficult to find. 
Mansonia (Coquillettidia) xanthogaster 
(Edwards) 1924 
Fig. 21 
The pupa has not been described, but Taylor 
(1944: 126) published figures of the paddles 
and trumpet of specimens from Cairns, Aus- 
tralia. The figure of the paddles has been re- 
drawn and included here. 
Subgenus Mansonioides Theobald 
Diagnosis. — Trumpets differing from those 
of Coquillettidia in having the meatus tracheoid 
for only about one-half its length, and very 
little narrowed distally, without any line of 
Fig. 21 .Mansonia xanthogaster: dorsal aspect of 
terminal abdominal segment and paddles (after Tay- 
lor, 19 44). 
weakness separating it from the pinna; pinna 
deeply divided into two parts, one pale and 
very delicately feathered, the other strongly 
sclerotized and almost spine-like, though feath- 
ered on one side. Abdomen with the basal part 
of each tergite coarsely reticulate, without sha- 
green, posterior margin prominent but smooth. 
Setae C-II, C-III, B, and c-IV-VII forming long, 
stout, dark bristles extending to or beyond pos- 
terior margin of the following segments; re- 
maining setae small and obscure as in Coquil- 
lettidia. Paddles about twice as long as broad. 
Fig. 22. Mansonia africana: pupal trumpet (after 
Edwards, 1941). 
Mansonia (Mansonioides) africana 
(Theobald) 1901 
Figs. 22, 23 
Photographs of the whole pupa in lateral 
view and notes on its habits were given by 
Connal (1928: 293) and figures of the whole 
