Mosquito Larvae of New Guinea — BiCK 
415 
habitat: 
Total collections, 38 
Habitat 
Number of Habitat 
collections index 
Coconut shells 
19 50 
Artificial containers .... 
9 24 
Tree holes 
7 18 
Borrow pits (one was a 
urinal pit) 
3 8 
pH, 11 readings 
Range 
4.0-7.0 
Mode 
6.5 
Average 
5.8 
Factor 
Percentage 
occurrence 
Shaded 
43 
Exposed 
57 
Temporary 
92 
Semi-permanent . . . 
8 
Clear 
20 
Muddy 
11 
Stagnant 
32 
Polluted 
37 
Vegetation 
Absent 
100 
Hill (1925) records fnilnensis ir:om tree holes, 
Lee ( 1944 ^) from coconut shells, and King 
and Hoogstraal (1946c) report it associated 
with Arm. hreinli and C. fragilis in putrid 
water in tips of fallen betel nut palms. My 
collections demonstrate the importance of 
coconut shells. However, milnensis utilized 
this habitat to a lesser degree (50) than did 
hreinli (94). 
As with hreinli, the present species often 
occurred in polluted water and in great con- 
centrations of individuals. In one collection 
the larvae were found in dense masses in a 
small pit filled with urine. Feng (1938^) states 
that in China the usual habitat of Arm. 
ohturhans is tubs of fermenting urine. Milnen- 
sis occurred mostly (84 per cent) in pure col- 
lections. Percentages of associates were: 
Arm. hreinli, 3; T. himaculipes, 3; H. scute Haris, 
3; others, 7. 
Culex (Lutzia) halifaxi Theobald 
Culex halifaxi Theobald, 1903, Mon. Cul. 3: 
231. 
distribution: Dutch New Guinea: Alba- 
trosbivak (Brug, 1927; Bonne-Wepster, 1938); 
Manokwari (Brug and Haga, 1923); Toerai 
(Brug and Haga, 1923; Bonne-Wepster, 
1938) ; Assike, Fakfak, Merauke, Tanahmerah 
(Bonne-Wepster, 1938); Hollandia (King 
and Hoogstraal, 1946^, /); Padaido Islands 
(Author). Northeast New Guinea: Finsch- 
hafen, Saidor, Morobe (Author). Papua: 
Mekeo District (Hill, 1925); Milne Bay 
(Author) . 
HABITAT: 
Total collections, 183 
Habitat 
Puddles 
Artificial containers .... 
Creeks: Pot holes 
Ditches 
Borrow pits 
Rock holes 
Pond 
Swamp 
Well 
Coconut shell 
Tree holes 
pH, 31 readings 
Range 4.0-8. 0 
Mode 6.5 
Average 6.0 
Percentage 
Factor occurrence 
Shaded 32 
Exposed 68 
Temporary 81 
Semi-permanent 17 
Permanent 2 
Clear 41 
Muddy 28 
Stagnant 25 
Polluted 6 
Vegetation 
Absent 68 
Present 32 
Sparse 33 
Moderate 45 
Abundant 22 
Algae 59 
Emergent 24 
Overhanging 11 
Floating 4 
Submerged 2 
Halifaxi was common in every locality 
studied and ranked third in total number of 
Number of 
Habitat 
collections 
index 
118 
65 
26 
14 
22 
12 
5 
3 
5 
3 
2 
1 
1 
- 
1 
- 
1 
- 
1 
- 
1 
— 
