399. 

 TRYPHON VARITARSUS. 



Order Hymenoptera. Fam. Ichneumonidae. 



Tijpe of the Genus, Ichneumon rutilator Linn. 

 Tryphon Fall., Grav., Curt. — Ichneumon Linn., Fab. — Cryptus S^ 

 Bassus Fab. 



Antennce inserted in the centre of the face, approximating, as long 

 as the body, fusiform, composed of numerous pubescent joints ; 

 basal joint robust oval^ 2nd subglobose^ 3rd ring-shaped, 4th long, 

 5 th half the length, the remainder decreasing in length to the 

 apical joint which is very minute and conical, (1, portions of the 

 base and apex.) 



Labrum transverse-fusiform, the edge ciliated vi^ith long bristles 

 producing a trigonate coriaceous lobe beneath, elongated and 

 attenuated at the apex (2). 

 Mandibles arched, bifid at the apex (3). 



Maxillcc with an internal fleshy suborbicular lobe and an external 

 one subovate and very pilose. Palpi very long, pubescent and 

 pilose, 5-jointed, 2nd a little the longest and broadest, penulti- 

 mate a little the shortest, terminal joint the slenderest (4). 

 Mentum oblong subovate. Palpi rather long, pubescent pilose 

 and 4-jointed, basal and terminal joints of equal length, the 

 former clavate, the latter subfusiform, 2nd and 3rd short, the 

 former a little the broadest and shortest. Lip bifid or deeply 

 emarginate (5). 

 Head short transverse and orbicular, face flat. Eyes oval. Ocelli 3 

 in triangle. Thorax subglobose : scutellum rather small convex and 

 subirigonate : postscutellum channelled. Abdomen subsessile oblong 

 clavate and convex, the ovipositor short but exserted (6). Wings 

 pubescent, superior rather broad and truncated obliquely at the apex, 

 areolei subrhomboidal with a pedicle above, the first recurrent ner- 

 vure very much sinuated (9) . Legs; hinder pair the longest. Thighs; 

 posterior the stoutest. Tibiae simple and spurred. Tarsi as long as 

 thetibicE; posterior Jiot very thick 5-jointed, 4th joint minute. Claws 

 simple. Pulvilli distinct. 

 Obs. The dissections are taken from T. varitarsus 9 , excepting the wing. 



Varitarsus Grav. Ich. Eur. v. 2. p. 222. n. 146. — Curt.' Guide, Gen. 

 492, n. 146. 



Black, shining, pubescent: antennae fuscous, black at the base, 

 ochreous beneath. Head punctured, face clothed with hoary pu- 

 bescence ; labrum ferruginous, mandibles yellow. Abdomen 

 with 2nd and 3rd segments rufous. Wings iridescent and trans- 

 parent, nervures and stigma brown, except at the base where 

 they are pale yellow. Legs bright ochre, trochanters black, coxae 

 pale yellow, the posterior sometimes black at the base, as well 

 as the tips of the thighs ; tibiae and tarsi of this pair black, the 

 former with the middle and spurs white, the latter with the base 

 of the joints whitish ; in the other tarsi the apex is blackish. 

 In the Authors and other Cabinets. 



