ART. 16 WASPS OF THE SUBFAMILY BRACONINAE MUESEBECK O 



Face elongate; rostriform; the malar space varying from a little shorter to a 

 little longer than the eyes; apical segment of posterior trochanters not 

 carinately margined beneath; tibial spurs shorter; scutellum not margined 

 at apex; ovipositor sheaths about as long as the abdomen or nearly. 



Braeon Fabricius. 



4. Maxillary palpi modified to form a long 5-segmented hollow beak that is 



usually as long as the head and thorax combined; tarsal claws simple, or 

 with an indistinct basal tooth; basal abdominal tergites sculptured; ovi- 

 positor long Aenigm ostomus Ashmead. 



Maxillary palpi normal, not modified to forma long beak 5. 



5. Posterior basitarsus more or less incrassate, sometimes very broad; apical 



segment of all tarsi very large and long; the apical segment of hind tarsi 

 usually fully as long as the second segment; tarsal claws large and with a 

 distinct^asal tooth; labium usually conspicously extended; wings varying 

 from yellow to practically hyaline, with the area covered by the third cu- 

 bital, second discoidal, and second brachial cells, contrastingly dusky; pro- 

 podeum short and broad, fully twice as broad as long down the middle: 

 ovipositor sheaths varying from as long as the first abdominal tergite to 



as long as the abdomen Agathirsia Westwood. 



Posterior basitarsus not incrassate; otherwise not combining the above 

 characters 6. 



6. Ovipositor barely exserted and strongly decurved; tarsal claws large, simple, 



with no indication of a basal tooth; abdomen completely polished with 

 no suggestion of sculpture; propodeum closely rugose, not areolated. 



Crassomicrodus Ashmead. 



Ovipositor always prominent, the sheaths at least as long as the abdomen; 



tarsal claws with a basal tooth, which is usually very pronounced, very 



rarely without a distinct basal tooth (hrevicornis) , but then the abdomen 



more or less sculptured at base and the propodeum not closely rugose. 



Bassus Fabricius. 

 Genus EARINUS Wesmael 



Earinus Wesmael, Nouv. Mem. Acad. Sci. Brux., vol. 10, 1837, p. 8. Genotype. — 

 {Microdus gloriator Nees)=Bassus gloriatorius Panzer (Monobasic). 



Diatmetus Foerster, Verb, naturh. Ver. preuss. Rheinl., vol. 19, 1862, p. 246. 

 Genotype. — {Microdus gloriator Nees)=BassMS gloriatorius Panzer (Monobasic). 

 Isogenotypic with Earinus Wesmael. 



The most conspicuous difference between this genus and all other 

 genera of the Braconinae wliich are represented in the Nearctic fauna, 

 is the complete separation of the first cubital and first discoidal cells. 

 But, in addition to this, Earinus exhibits a combination of characters 

 not found in the genus Bassus, to which it is most closely aUied. 



Head transverse, somewhat hollowed out behind; face not rostri- 

 form, much broader than long from the antennal foramina to the apex 

 of clypeus, with long abundant whitish pile; clypeus broad; man- 

 dibles large, crossing at tips, bidentate, the inner tooth much 

 shorter than the outer and truncate; palpi nonnal, the maxillary 

 palpi 5-segmented, the labial 4-segmented; labium not extended; 

 eyes large, malar space much less than half the eye height ; frontal 

 impressions not margined b3^carinae; all three ocelH situated on the 

 vertex, the median ocellus not distinctly below the others; parapsidal 



