BRITISH ICHNEUMONS, 2^ 



entirely black in S- Thorax entirely black in $, callosities at radix white 

 in (?; notauli distinct; metanotum strongly punctate; areola smoother, 

 short, arcuately emarginate at apex. Scutellum entirely black. Abdomen 

 black, often with a decidedly bluish reflection ; segments two to five with 

 the incisures usually red ; post-petiole somewhat broad, centrally aciculate ; 

 gastrocaeli deep, somewhat triangular, the intervening space coarsely 

 aciculate ; terebra slightly exserted. I^egs black ; $ anterior more or less 

 rufescent, with tibiae internally flavidous ; hind coxae closely punctate, 

 their scopulae piceous and distinct ; 6 tibiae and tarsi white with only the 

 apices of the posterior infuscate or black. Wings clouded ; stigma and 

 tegulae piceous ; areolet wide above, narrower in r^ . Length, 12-17 ""'•^'i- 



This species may be distinguished from its allies by the clouded wings, 

 the distinct tufts of the female's closely punctate coxae, quadrate second 

 joint of the flagellum, and usually blackish stigma; the i, moreover, has 

 second joint of the flagellum incrassate, and joints four to seventeen with 

 raised carinae, its mesopleurae are shining and sparsely punctate, and its 

 tibiae and tarsi basally white. 



The variety biannulahis (/. funebris, ? et var. i, Holmgr. Ichn. Suec. i. 

 ^g = comifa/or, var. i, Wesm. Tent.) is considered distinct by Thomson, 

 and it certainly differs widely from the type in the following particulars : 

 antennae of ? a little dilated towards the apex, the coxal tuft absent, the 

 stigma generally ferrugineous ; the $ has the mesopleurae more closely 

 punctate, the flagellum less thickened, the joints being longer, with raised 

 carinae on five to sixteen. This variety, Stephens says, is found very rarely 

 around London, in June. 



/. fasciaius appears to differ only in possessing a white dot at the radix 

 of the wings, which is generally absent in the type form. Stephens says it 

 is very rare in Britain, but has been taken, in July, in the New Forest (cf. 

 Ctenichneumon caeruleaior, post). 



/. 7wthus is a variety of the $ with the first two joints of the flagellum 

 white-marked. 



The type form is said by Stephens to be not uncommon about London, 

 in gardens, woods, &c., in June and July, and to have been met with in 

 Scotland. It is also not uncommon on the Continent. It preys upon 

 Bombycidae, Trachea piniperda, Abraxas grossiilariata, Cleora viduaria, 

 Fidonia piniaria and Plusia gamma. It has been taken upon umbelliferous 

 flowers near woods, frequently in S. Devon, and in the district of Land's 

 End ; Davies has found it at St. Issey, in Cornwall. 



9. derasus, Wesm. 



Ichneumon coinitator, var. stigmate rufo, Gr. I. E. 108, ? . /. derasus, Wesm. Nouv. 

 lM(im. Ac. Brux. 1844, p 31 ; Holmgr. Ichn. Suec. i. 33 ; Berth. Ann. Soc. Fr. 1894, 

 P- 555. i 'i • I- carbonator,T\?>c\\. Stett. Zeit. 1874, (, . Coclichneiimon derasus, Thorns. 

 O. E. .wiii. 1906, i 9 . Var /. percussor, Tisch. ///;. cit. 1876, 9 . 



Rather shining, duller in $ ; punctate, black ; body stout. Head black ; 

 clypeus hardly bisinuate ; facial, frontal, and a point at the vertical, orbits 

 sometimes white, c^ also with maxillary |)alpi and angles of clyi^eus white. 

 Antennae compresso-dilated, and attenuate ; white-banded in $ , entirely 

 black in ^ . Thorax entirely black, or with white dot at radi.x, in ? ; lines 



