The Aleyrodidae (Hemiptera-Homoptera) of New Caledonia 
L. J. Dumbleton 1 
A previous paper ( Proc. R. Ent. Soc. Lond. 
(B) 25, pts. 7-8, pp. 129-141, 1956) included 
descriptions of one species of Dialeurodicus Ckll. 
and six species of Orchamoplatus Russell. This 
paper completes the study of a collection of 
Aleyrodidae from New Caledonia. The material 
was collected largely by myself during three 
years’ residence in New Caledonia, and as col- 
lection was concentrated specifically on this fam- 
ily it is believed that the fauna described here 
is representative and probably includes a ma- 
jority of the species. 
The following table compares the size and 
endemicity of the New Caledonian Aleyrodid 
fauna with those of adjoining areas, in so far 
as these are known. 
The fauna of the New Guinea-Solomons- 
New Hebrides chain, from which direction an 
ities between the faunas of New Caledonia and 
New Zealand. The faunas of New Zealand and 
the South Pacific are smaller, but while the 
majority of the New Zealand species are un- 
doubtedly endemic the South Pacific species are 
predominantly introduced forms occurring on 
introduced economic crop plants or weeds or 
on native food plants whose movements about 
the area have been considerable. 
The majority of the species from these four 
areas belong to the subfamily Aleyrodinae. The 
subfamily Udamoselinae is poorly represented, 
there being one species of Aleurodicus Douglas 
in Australia and another in Fiji, one species of 
Dialeurodicus in New Caledonia, and one species 
of the endemic genus Synaleurodicus Solomon in 
Australia. The subfamily Uraleyrodinae is not 
represented. 
AREA 
NUMBER OF GENERA 
NUMBER OF SPECIES 
Endemic 
Nonendemic 
Total 
Endemic * 
Nonendemic 
Total 
New Caledonia 
3 
7 
10 
25 
— 
25 
Australia 
1 
12 
13 
19 
3 
22 
New Zealand...... 
1 
3 
4 
9 
1 
10 
South Pacific 
— 
7 
7 
5 
4 
9 
* In each area the number of species presumed to be endemic includes two which are possibly nonendemic. 
important element of the New Caledonian fauna 
was probably derived and with which it could 
be expected to show strong affinities, is un- 
fortunately completely unknown. 
The Australian fauna has been little studied 
and is undoubtedly much larger than the above 
figures suggest. Those of New Zealand and the 
South Pacific are reasonably well known. The 
New Caledonian fauna has affinities with the 
Australian fauna (for example, in the presence 
of endemic species of Alem acanthus, Bemisia . 
Dialeurodes, and Tetraleurodes) , but there is a 
relatively stronger element of endemic genera 
in New Caledonia. There are no obvious affin- 
1 Entomology Division, D. S. I. R., Christchurch, 
New Zealand. Manuscript received June 1, 1959- 
KEY TO THE GENERA OF THE ALEYRODIDAE 
OF NEW CALEDONIA 
( based on pupal cases ) 
1. Thoracic tracheal pores, clefts, and combs 
absent 2 
Thoracic tracheal pores, or clefts, or combs 
present 6 
2. Large elongate brown species, vasiform 
orifice large, operculum short transverse; 
lingula long, more than half exposed, 
occupying whole orifice 
Dialeurodicus Cockerell 
Not as above 3 
3. Submarginal line distinct, complete 
T etraleurodes Q. & B. 
Not as above 4 
114 
