E. VAN DER GOOT, NOTES OR ORIENTAL APHIDIDAE. I 1 9 



4 — 5, abd. I 3, abd. II 4, abd. Ill 4, abd. IV 4, abd. V 5, 

 ßM VI 4, rt<^^. VII 4, rt(^./. VIII 6—7. 



Biology. 



This species was collected towards the end of March 191 7 

 in the Botanical Gardens at Singapore, were it was observed 

 living in rather small numbers on the underside of the leaves 

 of an unknown plant [Amomiim sp. ? ?). The aphids were sitting 

 near the protruding midrib of the leaves, more or less corn- 



Fig. 3. Oregma mttiri n. sp., 



caudal part of apterous female (dorsal view) 



gl. 6 = marginal glands of ó'h abd. segment. 



pletely protected by galleries of earth, which had been built 

 over them by large brownish ants (Campono/us sp.j. At the 

 time of collecting the colonies contained a number of apterous 

 females and some nymphae, from which I failed to rear the 

 alate form. 



Locality. 



Singapore. 



Note. 



The species described above belongs to the group of those 

 Ore'g-ma-species, which have the waxglands of the 8'^ abd. 

 segment arranged in two groups along the hindmargin, the 

 groups coming very close together in the middle. PVom these 

 species, to wit O. rhapidis, 0. nipae and 0. 7iipae var. cocois 

 it may be easily distinguished, from the first one by the 

 larger glands (about \^\^ times as large), from the latter by 

 the larger distance between the groups of glands, being 



