68 
PACIFIC SCIENCE, Vol. Ill, January, 1949 
Subgenus LuTZlA Theobald 
Diagnosis. — Practically inseparable as a sub- 
genus from Culex ( Culex ) except in the posi- 
tion of seta A on III-VI far anterior to the 
corners of the segments; the paddles slightly 
notched at the apex of the midrib; and always 
of large size. 
Culex (Lutzia) halifaxii Theobald 1903 
Fig. 48 
Pupa undescribed, but Hill (1925: 73) in- 
cluded figures of its paddles and trumpet. 
Cephalothorax. — Postocular: 1 small, 
simple; 2 small, simple or occasionally two- 
forked at apex; 3 small, simple. 
Anterothoracic: 4 small, simple; 5 small, simple; 
6 small, simple; 7 small, simple. 
Dorsal: 8 small, one-third length of trumpet, 
simple or rarely two-forked. 
Supra-alar: 9 small, simple. 
Metanotum: 10 small, three- or four-forked, or 
rarely live- forked; 11 small, simple or rarely 
two-forked; 12 small, simple. 
Trumpet: Medium length, length about three 
times the greatest diameter of meatus; pinna 
long, nearly one-half the total length of trumpet; 
tracheoid area indistinct; basal part of trumpet 
darkest, although the whole trumpet is darkly 
pigmented. 
Abdomen. — Segment I: h small, simple; K 
long, two-forked near basal one-third; L small, 
two-forked near apex, or occasionally five- 
forked or simple; M small, two- to four- forked 
near apex; S long, simple; T long, simple or 
rarely two-forked; U minute, simple. 
Segment II: A small, simple spine; B long, 
simple or rarely two-forked near middle; C 
small, three- to five-forked near middle; c' small, 
simple on this and all following segments; 1 
long, simple or rarely two-forked; 2 long, sim- 
ple; 3 small, two- to four-forked or rarely sim- 
ple; 4 long, simple; 5 minute, simple on this 
and all following segments. 
Segment III: A small, simple spine; B long, 
simple or occasionally two-forked; C long, plu- 
mose, five- to eight-forked near base; 1 me- 
dium, simple; 2 small, two- or three-forked at 
apex; 3 represented only by its socket; 4 long, 
two- to four-forked, rarely simple or five-forked. 
Segment IV: A small, simple spine; B long, plu- 
mose, three- to six-branched; C long, plumose, 
three- to six-branched; 1 long, simple or rarely 
two-forked at apex; 2 small, two-forked near 
apex, or rarely three-forked; 3 represented only 
by its socket; 4 small, five-forked near middle, 
or occasionally four- or six- forked. 
Segment V: A small, simple spine; B very long, 
plumose, two- or three-branched, rarely four- 
branched; C very long, plumose, two- or three- 
branched; 1 long, simple; 2 medium, three- or 
Fig. 48. Culex halifaxii: dorsal aspect of right half 
of abdomen of female from WagaWaga, Papua. 
