THE PSYLLIDA OF BORNEO 
By D. L. CRawFrorp 
Of the College of Hawaii 
ONE PLATE 
Our knowledge of the psyllid fauna of Borneo is fragmentary 
and far from complete, as only a few localities on this large 
island have been visited by collectors. The most extensive col- 
lections in the group have been made by Prof. €. F. Baker. Sev- 
eral interesting forms have been captured there by Mr. Frederick 
Muir also. 
There is presented here a list of all the Bornean Psyllide 
known to me, together with descriptions of several new species. 
PAUROPSYLLIN 42 
Pauropsylla udei Riibsaamen. 
A species very widely distributed throughout the East Indies 
and tropical Asia. Two specimens collected at Sandakan, Bor- 
neo (C. F. Baker). 
Paurocephala psylloptera Crawford. 
A single female specimen taken at Sandakan, Borneo (Baker), 
probably belongs to this species, although it is a little smaller than 
the average Philippine specimen and has somewhat darker fore- 
wings. This is a widely distributed species in tropical Asia and 
Oceania and is, therefore, subject to some variation. Agonos- 
cena sauteri Enderlein is a synonym of this. 
Macrohomotoma apsylloides (Crawford). 
Pauropsylla apsylloides CRAWFORD. 
This species was at first referred to the genus Pauropsylla 
with some hesitation, but subsequent comparisons indicate its 
very close relationship to Macrohomotoma gladiatum Kuwa- 
yama, a Formosan species. In wing venation and cephalic char- 
acters it is very similar to Kuwayama’s species, but differs a 
little in the female genitalia, in the Formosan species the genital 
segment being comparatively shorter. 
A male specimen was taken at Sandakan, Borneo (Baker). 
The following description of the male genitalia supplements the 
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