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PACIFIC SCIENCE, Vol. XV, January 1961 
sinuate, with 7 rounded prominences on each 
side. True margin may be visible between prom- 
inences near cauda and there show small conical 
teeth. Margin (Fig. 9 d) reflexed ventrally, 
marked by a line of small conical teeth mesad of 
which is a clear membranous line separating the 
venter which is densely covered by small circular 
pigmented tubercles. Apparent margin with 9 
submarginal setae 0.05 mm. long, 4 anterior to 
thoracic pore, 1 on thorax caudad of pore, and 4 
on the abdomen in addition to the caudal seta on 
each side. Submargin in bleached specimens with 
elongated pigmented rectangular thickenings 
internally. Cephalic area with a pair of cephalic 
setae and anterolaterad of these about 4 small 
tubercles in the position of the eye spots. Tho- 
racic tracheal folds not evident, pores (Fig. 
9e) represented by 2 projecting rounded proc- 
esses 0.01 mm. long. Abdomen with median ab- 
dominal ridge. Segments clearly defined laterally 
by raised tuberculate line, the lateral margins 
of the seventh segment produced caudad. Eighth 
abdominal setae as long as orifice, distant from 
it, and level with its anterior margin. Vasiform 
orifice (Fig. 9/) subcircular, 0.04 mm. long, 
internally ribbed. Operculum filling orifice. Lin- 
gula not visible. Abdominal tracheal fold not 
evident, no pore or comb, caudal margin with 
4 or 5 indistinct teeth between caudal setae. 
ADULT: (Fig. 9 g—h): Pale yellow. Wings 
immaculate. Forewings with Rg and Cu present. 
Hind wings with single vein. Antennae with 
third segment longer than 4-7 combined, 4 and 
7 subequal and shorter than 5 and 6, which are 
subequal. About 18-19 setae in comb on hind 
tibia. Lingula (Fig. 9 g) with sides subparallel, 
apex conical and reduced in thickness. Male 
with claspers slender, pointed; aedeagus (Fig. 
9 h) tapering slightly falcate apically. 
holotype: Pupal case on slide mount. De- 
posited in Institut Frangais d’Oceanie, Noumea, 
New Caledonia. 
paratypes: In author’s collection. 
TYPE LOCALITY: New Caledonia, Dothio 
River, coll. L.J.D., 9/5/53. 
FOOD PLANT: Undetermined. 
genus Gomenella nov. 
PUPAL CASE: Circular. Submargin defined by 
submarginal line. Submarginal setae present or 
absent. Dorsum densely covered with simple 
pores which may be large and contiguous. 
Thoracic tracheal pores flasklike, folds absent. 
Abdominal tracheal fold and pore present or 
absent. Anal furrow present. Vasiform orifice 
subcircular, operculum filling it. Lingula finger- 
like. Only 7 visible abdominal segments. Top- 
shaped, pit-making species. 
type SPECIES: G. multipora sp. n. 
One of the species described below resem- 
bles Aleurochiton Tullgren in the presence of 
dense dorsal pores but differs as above and also 
in the absence of a vertical wax palisade. The 
other species conforms to Dialeurodes (s.g. 
Gigaleyrodes ) except for the reflexed margins 
which suggest Tetralicia Harrison but it is 
otherwise unlike that genus. In assigning these 
2 species to a new genus, stress is placed on the 
apparent presence of only 7 visible abdominal 
segments and the top-shaped form correlated 
with the pit-making habit in spite of the dif- 
ferences noted in the following key. 
KEY TO THE NEW CALEDONIAN SPECIES 
( based on pupal cases ) 
Submargin reflexed, without setae; dorsum 
without dense large contiguous pores; ab- 
dominal tracheal pore present. . . .reflexa sp. n. 
Not as above multipora sp. n. 
Gomenella multipora sp. n. 
Fig. 10 a-f 
LARVA. First instar (Fig. 10*): Length 0.13 
mm., width 0.10 mm. Submarginal setae as in 
other stages but with very long caudal setae 
functional legs and long antennae, without large 
pores on dorsum, vasiform orifice more elongate. 
Second instar (Fig. 10 b ) : Distinguished from 
other stages by sparse regularly arranged dorsal 
pores on thorax and a line of four subdorsal 
pores on each side of abdomen. 
Third instar (Fig. 10c): More numerous 
pores on the thorax, 3 rows of 3 pores on each 
side of abdomen not extending across median 
line as in pupal case. Two pores on each side 
of orifice. 
PUPAL CASE (Fig. 10 d-f): Length 0.5 mm., 
width 0.5 mm. Pupae yellow. Pupal case colour- 
