EXEXASTES. 24S 



Gonas EXETASTES, Orav. 

 Ejrcfastes, Gravenhorst, Ichn. Eur. iii, 1829, p. 395. 



Genotype, Ichneumon cinctipes, Eetz. 



Head short and transverse, somewhat produced in front, not 

 buccate posteriorly and often white-marked ; clypens subdiscrete 

 and a little broader tlian long, more or less impi'essed, basally 

 elevated and apically I'oniided but not excised ; mandibles broad, 

 curved, subconstricted apically, with the teeth of nearly equal 

 length ; maxillary palpi simple ; eyes entire and not emarginate. 

 Antennte slender, tilit'orm or subsetaceous, with the scape ovate 

 and apically hardly excised. Thorax somewhat narrow ; epi- 

 cnemia distinct ; metatborax stout, usually pai*allel-sided and 

 dorsally scabriciilous ; area; obsolete or wanting ; spiracles oval 

 and not large. Scutellum simple, convex or gibbous, especially 

 when not pale. Abdomen narrow, subsessile and compressed at 

 the apex, smooth and nitidulous ; petiolar spiracles a little before 

 the centre ; second and third segments margined ; terebra dis- 

 tinctly exserted. Legs slender, with hind pair elongate ; posterior 

 tibise bicalcarate, with the tarsal claws simple. Wings normal, 

 often a little clouded ; areolet irregularly rhomboidal ; radius 

 emitted slightly before the centre of the stigma, nervelet usually 

 distinct ; hind wings with the nervellus intercepted above the 

 centre and the first radial abscissa only half the length of the 

 second. 



Range. Europe, Madeira, Teueriffe, Himalayas, Malay Archi- 

 pelago, North America, Brazil. 



Thomson points out (Op. Ent. xxii, p. 2414) that this genus is 

 separable from Banclms by its entire eyes, which, though not 

 uniform in shape, are never emarginate, the subentire scape and 

 simple scutellum ; the external orbits are not flavidous, the 

 mandibles have the upper tooth obliquely truncate and somewhat 

 longer than tlie lower, and the areolet, though large and rhom- 

 boidal, is yet smaller and seldom sessile ; the recurrent nervui-e 

 of the hind wings intercepts the radius in its first third aud is- 

 shorter and slightly oblique. 



Tahle of Species. 



1 (4) Hind metatarsus clear red. 



(3) Mesonotum finely and obsoletely punc- 

 tate ; lengtli S-l:> millim cinctipes, Ketz., p. 244.. 



3 (2) Mesonotum closely ami coriaceously 



punctate ; leniith 14 millim tiaiplione, sp. n.. p. 2IG. 



4 (1) Hind metatarsus infuscato or black. 



o (6) Mesonotuiu <j:labrous and less convex . nir/ripes, Grav.. p. 247. 



6 (5) Mesouotum punctate and more convex. 



7 (8) Frons closely punctate and dull ; areo- 



let subsessile lucifer, ep. n., p. 24)^. 



k2 



