134 



THK KNTOMOLOGIST. 



NOTES ON SOME PARASITES OF SUGAR-CANE INSECTS 

 IN JAVA, WITH DESCRIPTIONS OF NEW HYMEN- 

 OPTERA CHALCIDOIDEA* 



By a. a. Girault. 



Here P. van der Goot, Entomologist of the Experiment 

 Station of the Java Sug;ir-cane Industry at Pasoeroean, Java; 

 was kind enough to send to me for identification a number of 

 egg-parasites of sugar-cane insects upon part of which I report 

 on in the following pages : 



1, Gonatocerus hiiasciativentris, new species. 



Female. — Length, 1-20 mm. Black and golden yellow, and 

 belonging to the group of species with graceful fore wings ; the 

 abdomen as in rivalis, the ovipositor exserted for a length equal to 

 a third that of the abdomen. Funicle and club, the propodemn, 

 cephalic third or less of mesoscutum, cephalic half of parapside 

 (making two triangular spots on each side), a subquadrate spot at 

 base of scutellum at the meson, immediate base of abdomen, the 

 exserted valves of the ovipositor and a broad black band just distad 

 of centre of abdomen, in the dorsal aspect, sometimes narrowly 

 divided into two stripes, velvety black. Pedicel yellow, suffused 

 with dusky, the scape yellow, dusky along dorsal and ventral edges. 

 Mesopleurum black. Fore wings with about twenty-one lines of 

 discal cilia where broadest , marginal vein long for the genus ; 

 posterior wings with a paired line of disoal cilia along each margin. 

 Funicle of antennae with no globular joints, all longer than wide ; 

 1 and 2 subequal, smallest ; 3 somewhat longer, subequal to the 

 pedicel ; 4, 5 and 6 subequal, longest ; 7 only slightly shorter than 6, 

 while 8 shortens. 



Fore wings fumated slightly along distal margin. 



From many specimens, | =1 inch objective, 1 = inch optic, 

 Bausch and Lomb. 



Male. — The same, but the abdomen sometimes with three black 

 stripes. Longest funicle joints nearly thrice their own width. 



From eight specimens ; the same magnification. 



Though coloured somewhat like the Australian cingulatus 

 and comptei, this species resembles in habitus spinozai and 

 hicolur of Australia and rivalis of North America because of the 

 more slender abdomen, the exserted ovipositor, and the absence 

 of globate joints in the antennal funicle. But it is quite slender. 

 Eight males and fifty-four females. 



Habitat. — Java. 



Host. — Eggs of a leaf-hopper embedded in the leaves of 

 sugar-cane. 



* Contribution No. 9, Entomological Laboratory, Bureau of Sugar 

 Experiment Stations, Bundaberg, Queensland. 



