422 
PACIFIC SCIENCE, VoL V, October, 1951 
Trichopronomyia annulata Theobald (1905: 
98). 
DISTRIBUTION: Dutch New Guinea: Upper 
Digoel River (Brug, 1934) ; Merauke (Bonne- 
Wepster, 1938); Padaido Islands (Author). 
Northeast New Guinea: Madang (Theobald, 
1905; Edwards, 1924); Finschhafen (Author). 
Papua: Milne Bay (Lee, 1944^; Author). 
HABITAT: 
Total collections, 49 
Number of Habitat 
Habitat 
collections index 
Puddles 
22 45 
Creeks; Running 
17 35 
Creeks: Pot holes 
7 14 
Ditches 
2 4 
Ponds 
1 2 
/>H, 9 readings 
Range 
5.0-7.0 
Mode 
5.0, 5.5 
Average 
5.7 
Percentage 
Factor 
occurrence 
Shaded 
11 
Exposed 
89 
Temporary 
45 
Semi-permanent. . 
18 
Permanent 
37 
Clear 
76 
Muddy 
9 
Stagnant 
15 
Vegetation 
Absent 
15 
Present 
85 
Sparse 
27 
Moderate 
35 
Abundant 
38 
Algae 
61 
Emergent 
11 
Overhanging, . . 
2 
Submerged .... 
11 
Floating 
15 
Squamosus was recorded from surface water 
only. It had a high affinity for the more per- 
manent puddles and for creeks. The most 
striking habitat factor was vegetation, which 
was present in 85 per cent of the collections 
and was typically dense masses of algae 
flourishing in full sunlight. Hill (1925), Brug 
(1934), and Lee (1944^?) also list surface water 
habitats but they apparently did not observe 
any striking abundance and frequency of 
vegetation in association with squamosus. 
Squamosus occurred to approximately the 
same degree in pure (43 per cent) and in 
mixed (57 per cent) collections. Percentages 
of associates were: An. farauti, 18; C. pullus, 
16; An. punctulatus, 12; C. halifaxi, 6; 
others, 5. 
SUMMARY 
Distribution 
Edwards (1924) included 145 species from 
the Australasian Region and recorded 47 from 
New Guinea. Bonne-Wepster (1938) listed 
121 non-anopheline species from the island. 
In 1944 Knight et al. listed 238 species from 
the Australasian Region and recorded 124 
from New Guinea. I have specific locality 
records for 47 species. I believe that this dis- 
crepancy is due primarily to the fact that I 
engaged in routine surveys of each area 
rather than in intensive searching for species 
in unusual and inaccessible habitats. 
In this paper many species are reported for 
the first time from major subdivisions of New 
Guinea. First records from Papua are pre- 
sented for D. argyrotarsis, A. candidoscutellum^ 
A. dasyorrhus, C. hrevipalpis, C. fraudatrix, and 
C annulirostris. First Northeast New Guinea 
records are presented for U. argyrotarsis, U. 
papua, A. vexans, C. halifaxi, C. fragilis, and 
H. genurostris. The collections of A. aurantius 
chrysogaster from Morobe and Milne Bay are 
apparently the first New Guinea records of the 
subspecies. 
In assembling the records it became clear 
that frequently, ia past surveys, novelties 
were recorded to the almost complete neglect 
of certain common species. Thus Culex pullus, 
one of the species most frequently encoun- 
tered in my collections and present in every 
area studied, is represented in the literature by 
only two records from Northeast New Guinea 
and by a single one from Papua. 
Table 1 summarizes distribution records 
from the study areas. The following gen- 
eralizations may be given. 
