Mosquito Larvae of New Guinea — BiCK 
HABITAT: 
Total collections, 11 
Habitat 
Number of Habitat 
collections index 
Tree holes 
10 91 
Coconut shells 
1 9 
pYL, 2 readings 
4.5, 5.0 
Factor 
Percentage 
occurrence 
Shaded 
90 
Exposed 
10 
Temporary 
100 
Clear 
100 
Vegetation 
Absent 
100 
This uncommon species has been reported 
only from the Milne Bay area. King and 
Hoogstraal (1946^) recorded it from a stump 
hole, and in my collections it occurred almost 
entirely in tree holes. It was found mostly 
(64 per cent) in mixed collections. Per- 
centages of associates were: Toxorhynchites 
spp., 14; A. scutellaris, 14; A. albolineatus, 14; 
A. candidoscutellum, 14; T. bimaculipes, 8. 
Aedes (Finlaya) kochi (Donitz) 
Culex kochi Donitz, 1901, Insekten Borse 5: 
38. Type locality: '’Neu-Guinea.” Allotype 
male, Milne Bay, Papua (Marks, 19^1 a). 
Aedes poicilia (Theobald) has been recorded 
from New Guinea by the following: Theo- 
bald (1905); Taylor (1914^, b)\ Breinl 
(1915); Bonne-Wepster (1938). However, 
recent revisions by Knight and Laffoon 
(1946) and Marks (1947<^) state that all 
Australasian records of poicilia undoubtedly 
refer to kochi. 
DISTRIBUTION: Dutch New Guinea: Fak- 
fak (Bonne-Wepster, 1938) ; Merauke (Marks, 
1947<^); Amsterdam Island (Author). North- 
east New Guinea: Madang, Seleo, Berlin- 
hafen. Mount Hanseman, Astrolabe Bay 
(Theobald, 1905); Lakekamu Gold Field 
(Taylor, 1914^; Breinl, 1915); Draeger Har- 
bor, Cape Cretin (Edwards, 1926); Bulwa 
(Taylor, 1934); Finschhafen (Mackerras, 
1946); Lae (Mackerras, 1946; Marks, 1947^); 
407 
Saidor (Author). Papua: Samarai Island, 
Mekeo District (Taylor, 1914<^); Karema 
(Taylor, 1914^); Wasima Island, Yule Island 
(Hill, 1925); Milne Bay (Marks, 1947^; 
Author) . 
habitat: 
Total collections, 45 
Number of Habitat 
Habitat collections index 
Leaf axils 45 100 
Banana (37 per cent) 
Pandanus (30 per cent) 
Taro (29 per cent) 
Pineapple (4 per cent) 
16 readings 
Range 
4.0-6.0 
Mode 
5.5 
Average 
5.4 
Factor 
Percentage 
occurrence 
Shaded 
49 
Exposed 
51 
Temporary 
100 
Clear 
85 
Stagnant 
15 
Vegetation 
Absent 
100 
A. kochi and Harpagomyia genurostris were 
the only species with an absolute affinity for 
any one habitat. Both were found solely in 
leaf axils of various plants. Kochi occurred to 
approximately the same extent in Pandanus, 
taro, and banana, and much more rarely in 
pineapple plants. This corresponds roughly 
to the relative abundance of these plants in 
the areas studied. At Amsterdam Island an 
index of its incidence in Pandanus was de- 
termined. All leaf axils containing water in 
100 scattered Pandanus trees were examined 
and kochi was found in only 2 per cent. 
It has been reported to breed in half coco- 
nuts (Hill, 1925; Stone and Bohart, 1944) 
and in leaf axils of Pandanus, banana, taro, 
cunjevoi, Crinum, pineapple (Heydon, 1931; 
Taylor, 1934, 1943; Stone and Bohart, 1944; 
Marks, 1947^). It is significant that Pandanus 
and taro leaf axils are mentioned in almost 
every habitat reference; banana is omitted in 
