Mosquito Larvae of New Guinea — BiCK 
421 
fak, Manokwari (Brug and Haga, 1923; 
Bonne-Wepster, 1938); Assike, Merauke, 
Tanahmerah (Bonne-Wepster, 1938); Hol- 
landia (Toffaleti and King, 1947); Padaido 
Islands (Author). Northeast New Guinea: 
Madang (Theobald, 1905; Hill, 1925); 
Bogadjim, Mount Hansemann, Yomo (Theo- 
bald, 1905); Lakekamu Gold Field (Breinl, 
1915). Papua: Port Moresby (Taylor, 1914^; 
Hill, 1925); Yule Island, Samarai (Hill, 1925). 
HABITAT: Bonne-Wepster and Brug (1937, 
1939), Taylor (1943), and Lee (1944^?) record 
fatigans from a variety of domestic habitats, 
and emphasize its occurrence in polluted 
water. I have a single, pure collection from 
the Padaido Islands, taken from a shaded well 
in stagnant water without vegetation. 
Culex (Culex) sitiens Wiedemann 
Culex sitiens Wiedemann, 1828, Aussereur. 
Zweifl. Insec. 1: 543. 
Culicelsa annulirostris Skuse var. milni Taylor 
(1914^: 196). 
Culex sitiens var. milni Taylor. Breinl (1915: 
317). 
Culex sitiens . Brug and Haga (1923: 640). 
Culex {Culex) Psitiens Wied. Brug (1934: 514). 
distribution: Dutch New Guinea: Alba- 
trosbivak (Brug, 1927; Bonne-Wepster, 1938); 
Pionierbivak (Brug and Haga, 1923; Bonne- 
Wepster, 1938); Sorong (Brug, 1934; Bonne- 
Wepster, 1938); Fakfak, Merauke, Tanah- 
merah, Toerai, Wamal (Bonne-Wepster, 1938) ; 
Hollandia (Toffaleti and King, 1947); Padai- 
do Islands, Amsterdam Island (Author). 
Northeast New Guinea: Madang (Hill, 1925) ; 
Lakekamu Gold Field (Breinl, 1915); Finsch- 
hafen (Author). Papua: Milne Bay (Taylor, 
1914^; Author); Yule Island, Samarai, Mekeo 
District, Moresby District (Hill, 1925). 
HABITAT: 
Total collections, 123 
Number of Habitat 
Habitat collections index 
Coral pools 
Brackish puddles 
Fallen trees on beach . . . 
93 
3 
2 
Ditch 1 1 
Artificial container 1 1 
117 readings 
Mode 7.0 
Average 7.0 
Percentage 
Factor occurrence 
Exposed 100 
Temporary 5 
Semi-permanent 95 
Clear 88 
Muddy 2 
Murky 10 
Vegetation 
Absent 36 
Present 64 
Algae 99 
Emergent 1 
Salinity 
Percentage 
sea water 
0-18 66 
18-37 7 
37- 55 6 
55- 74 5 
74- 93 9 
93-100... 6 
Sitiens is apparently widely distributed 
along the north coast of New Guinea. How- 
ever, it was common only at Amsterdam Is- 
land where 117 collections were obtained. 
The literature (Hill, 1925; Bonne-Wepster 
and Brug, 1937, 1939; Taylor, 1943; Lee, 
1944^) gives a much wider variety of habitats 
than we have observed, often assigning equal 
importance to fresh and brackish water. In 
my collections the association with brackish 
water was absolute. But, for the most part, it 
was found in salinities ranging from 0 to 18 
per cent sea water. It was found only along 
the beach in situations fully exposed to sun- 
light and subjected to salt spray or to storm 
tides. It occurred almost entirely (98 per cent) 
in pure collections. Its only associate was An. 
Culex (Culex) squamosus (Taylor) 
Culicada squamosa Taylor, 1914, Ent. Soc, 
London, Trans. 1913 (Part IV): 691. 
115 
4 
2 
