463 



Wliiitmairs paper and i-cprnducod hv halti(>ii(\ This will o'ive 

 voii some idea of the ])()ssibilities of each uielhod and iu con- 

 clusion it is advisable to state that black lines of o-,,od density, 

 photoo-raphs with a fair amount of contrast and wash drawing's 

 of accurate^ and forceful di-a\vini>- are desii-able from the ( n- 

 2;raver's as w(dl as the illustrator's point of view. 



A New Genus of Pteroptricine Aphelininae (Hymenoptera). 



BY 1). T. FULLAWAY. 



In 1913 I characterized the genus Ptera'ptricJioides to re- 

 ceive a truly remarkable insect bred by jMr. Jacob Kotinsky 

 from a diaspine scale on a Bombay mango (Leucaspis indlca (). 

 Since then I have found other specimens of the same insect, 

 bred from MovganeUa, loiigispina, among which the male sex 

 is represented, and as the original description was based on a 

 slide mount and 1 now have abundant fresh as well as pre- 

 served material, I am able to add to its accuracy and complete- 

 ness. 



The head is transverse and the lower part, below the eyes, is strongly 

 chitinized and protuberant. The lateral ocelli are separated from the 

 margin of the eye by a space nearly as wide as their diameter. The 

 antennae in both sexes are flattened outwardly. In the male the ist and 

 3rd funicle joints and the three joints of the club are subequal, each a 

 little longer than the pedicel and each fluted. The 2nd funicle joint is 

 transverse, its length only one-third its width. The .scutellum is short 

 and wide and the posterior margin is rounded. The marginal vein is 

 very much thickened and there is no postmarginal or stigmal. 



In life P. perkinsi is black, the head (mostly) and a semicircular band 

 on tlie thorax following the parapsidal grooves to and including the 

 tegulae and the posterior margin of the mosonotum brown, scutellum 

 lemon yellow, antennae and legs brown to fuscous. 



The species referred at the same time to Pieroptrlrlioides 

 and supposedly bred from Asierolecaniiim pustidans and Hoir- 

 ardia hiclavis, has since been recovered abundantly from the 

 latter scale but not from the former, which I l)elieve to be an 

 erroneous record. It differs to such an extent from P. perl- nisi 



Proc. Haw. Ent. Soc, III, Xo. 5, April, 1918. 



