ON SOME INDIAN DERBIDAE (HOMOPTERA). 



By F. Muir, Hawaiian Sugar Planters' Experiment Station, 

 Honolulu, T.H. 



I have recently received for study a small collection of Indian 

 fulgorids belonging to the Zoological Survey of India. The pre- 

 sent paper deals with the Derbidae. 



This is an interesting famity of mostly small and delicate 

 insects found in forest lands. The eggs are at present unknown. 

 The young live under bark and in rotten wood ; what their food is 

 is not at present known. There are over ninety genera and nearly 

 five hundred species described. The species generally have a 

 limited geographical distribution, especially the island forms, but 

 this cannot always be recognized unless the genitalia be examined, 

 as the species are often difficult to recognize by any other character. 



The types have been returned to the Indian Museum, 

 cotypes have been retained by the describer. Measurements are 

 from apex of head to anus and from base to apex of one tegmen. 



DERBINAE. 



Cenchreini. 



Herpis turae, sp. nov. 



(Fig. i.) 



Male. Length 3 mm. ; tegmen 5 mm. 



Length of vertex equal to width at base, apex narrower than 

 base, lateral margins thick and granulate, base angularly eniar- 

 ginate. Face fairly narrow. Sub- 

 antennal process distinct but not 

 very large. 



Pygofer produced angularly 

 below anal segment. Anal seg- 

 ment large ; anus slightly distad 

 of middle, in dorsal view slightly 

 narrowed beyond anus to the 

 truncate apex. Genital styles 

 large, long, comparatively nar- 

 row, margins subparallel, apex Text-fig. i. -Lateral view of. male 

 rounded, inner margin slightly genitalia of Herpis turae, sp. nov. 



sinuate, outer margin with a 



narrow border turned inward, two small processes near base, one 



pointed and curved, the other smaller with truncate apex. 



Head, thorax, legs and genitalia light brown, abdomen reddish. 



