686 Deutsch. Ent. Zeitschr. 1908. 



erreichend ; Clava nicht so stark verdickt. Thoraxrücken von der 

 Promesonotalsutur bis zur Wölbung des Epinotum in gestreckter 

 Kurve verlaufend ; Petiolus und Postpetiolus dicker als bei der 9 

 und mehr abgerundet. — L. 2,4 mm. 



Jaffa ; auch bei Calcutta und am Weifsen Nil in einem 

 Termitennest. Beim einzigen Exemplar (Typus) aus Indien ist 

 der Hinterleib nicht gebräunt ; deswegen dürfte die syrisch- 

 afrikanische Form als Varietät (var. clavicornis Er. Andre , Ann. 

 soc. ent. France v. 51 p. 68. 1881) aufgeführt werden. 



Description of a New Species of Microgaster (Braconidae) 

 from the Paraguayan Chaco, South America. (Hym.) 



By P. Cameron, Whitle, New Mills (England). 



• Microgaster chaco ensis sp. nov. 



Rufo - testaceous , the head and the flagellum of antennae 

 black, the legs of a paler rufo-testaceous colour, the wings fuscous, 

 the nervures and stigma black ; the apex of the hind tibiae and 

 the hind tarsi blackish. The head closely covered with a short 

 black, the thorax with a short white pubescence. $ and <f. 



Length 3 — 4 mm. 



Bred by Mr. W. E. Agar of Glasgow University from the 

 green larva of a Sphingid on the back of which the caterpillars 

 of the Braconid spun their cocoons in a mass in the usual 

 Microgaster fashion. 



Antennae somewhat stout , longer than the body , covered 

 with a microscopic black pile. Head, thorax and abdomen smooth 

 and shining ; the abdomen is only very sparsely pilose. The 

 hair on the eyes is dense , moderately long and white. The 

 depression at the base of the scutellum is large and has 2 stout 

 keels down the centre. There is a stout keel down the middle 

 of the metanotum ; from it run thinner, clearly separated, curved 

 keels. First abdominal segment almost twice longer than wide, 

 of equal width, but rounded at the apex, the sides with distinct 

 bordering keels ; the 2 nd segment becomes narrowed towards the 

 apex and is almost as long as it is wide at the apex. 



