New Mosquito from Fiji — Laxrp 
347 
freycinetiae n. sp. There are significant differ- 
ences between the male genitalia of the two 
mosquitoes. The preapical tuft of the coxite 
of A. samoanus is entirely composed of broad 
scales according to the data of Edwards (1935) 
and the figure of Bohart and Ingram (1946), 
but in A. freycinetiae n. sp. the distal scales 
are relatively much narrower in proportion to 
their length than the medial and proximal 
ones. Edwards (1935) gave the number of 
scales in the tuft of the former insect as 10 
to 12, and Bohart and Ingram figured an ex- 
ample having 10, while the holotype cf of 
the latter species has 14. Although Edwards 
(1935) declared that the patch of setae tergal 
to the preapical tuft is scarcely indicated in 
A. samoanus by comparison with A. fijiensis 
(= Fijian A. kochi ), this patch is equally 
prominent in the latter insect and A. frey- 
cinetiae n. sp. Considerable importance has 
been attached to the specialized seta in the 
classification of the kochi group. This seta is 
merely an apically bent hair hardly deserving 
the qualification of "specialized” in the Fijian 
insect under discussion; but although the 
specialized seta of A. samoanus was referred 
to as "very much shorter (than that of A. 
fijiensis . . . M. L.) and quite inconspicuous” 
by Edwards (1935), it was figured as a rela- 
tively broad structure by Stone and Bohart 
(1944; c.f. Fig. 4 B, herein) and Bohart and 
Ingram (1946). 
Larval A. samoanus and A. freycinetiae n. sp. 
resemble one another but differ from A. fijien- 
sis in the presence of but few scattered spicules 
on the siphon. Both the first-named species 
have a few spicules basally and laterally near 
the pecten, and also a prominent little apico- 
dorsal line (neither referred to by previous 
authors who have discussed A. samoanus nor 
figured by Buxton and Hopkins, 1927, or 
Bohart and Ingram, 1946, but apparent in my 
material from Samoa and Tonga) . Head hairs 
A, B and d arise in a curved line forwards in 
the case of A. samoanus , as was pointed out 
by Buxton and Hopkins (1927); this holds 
good in my Samoan and Tongan larvae, but 
in A. freycinetiae n. sp. d originates posterior 
to B (Fig. 5) as is the case in A. fijiensis. The 
general arrangement of the setae is otherwise 
much alike in the two species, although 
branching is more marked in A. freycinetiae 
n. sp. 
The number, spacing, and shape of the 
pecten spines are comparable in A. samoanus 
and A. freycinetiae n. sp. It would seem from 
the literature that the former species has fewer 
comb scales ("perhaps fifty” according to 
Buxton and Hopkins, and "about 70” ac- 
cording to Bohart and Ingram) than the latter 
(70-80) . Nevertheless, there are approximately 
80 scales in the lateral comb of our A. samoa- 
nus larvae from Samoa and Tonga. However, 
the two insects are immediately separable 
Seta 
A. freycinetiae n. sp. 
A. samoanus 
Head 
Seta A 
9~13 branches 
4- 6 branches 
Seta B 
2-3 branches 
2- 3 branches 
Seta C 
Single 
Seta d 
2- 4 branches 
Seta e 
1- 2 branches 
Seta f 
2- 3 branches 
Terminal segments 
1st pentad seta 
8-12 branches 
6-10 branches 
2nd pentad seta 
Single 
Single 
3rd pentad seta 
4 branches 
2- 3 branches 
4th pentad seta 
Single 
Single 
5th pentad seta 
. . . 8-12 branches 
6-10 branches 
Siphonal subventral tuft 
5 branches (all 
3-(rarely) 4 branches 
Lateral seta of saddle 
examples seen) 
4-5 branches 
3- 4 branches 
