ICHNEUMONOID PARASITES OF THE PHILIPPINES, I 



RHOGADIN/E (BRACONID^), I 



By C. F. Baker 

 {Los Banos, P. I.) 



In laying the foundations for work in economic entomology in 

 the Philippine Islands, a comprehensive study of the hymenop- 

 terous parasites occurring in the Archipelago is of the highest 

 importance. A bare beginning in this work has been made. Of 

 the marvelously rich fauna in these groups but very few and 

 scattering species have been made known to science; many of 

 these are to be credited to the activities of two Jesuit priests, 

 Fathers Brown and Stanton, whose field work was practically 

 confined to the garden of the Manila Observatory. A few were 

 obtained by Semper, the German lepidopterologist, and by other 

 travelers. 



Only two species of the subfamily Rhogadinse have been de- 

 scribed from the Philippines, but this subfamily is represented 

 here by many interesting and some peculiar genera and by a very 

 considerable number of species. It is entirely probable that 

 the twenty-one species of thirteen genera described herein ^ are 

 but a small fraction of those existing in the Islands, since they 

 have been obtained at a few widely separated localities and as a 

 result of merely desultory collecting. The Rhogadinae are para- 

 sitic on various Coleoptera and Lepidoptera, and many of the 

 species are of economic importance. 



This subfamily may be defined as cyclostomatous braconids 

 with margined occiput and sessile or subsessile or even subpe- 

 tiolate abdomen, having wings with three cubital cells, head 

 transverse and narrowed behind the eyes, usually one or more 

 abdominal tergites with median carina, and the abdominal dor- 

 sum usually coarsely striate in large part. The degree of con- 

 nation in the second abdominal suture is variable. The body 

 is usually covered with rather long, sparse, white pubescence, 

 this becoming shorter and thicker on the legs. The hind tibial 

 spurs are of various types and furnish good classificatory char- 



' Numerous species of the genus Rhogas will be described in a later 

 paper. 



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