BRITISH ICHNEUMONS. I47 



37. quaesitorius, Liiin. 



Ichneumon quaesitorius, Linn. F. S. 398 ; Gr. I. E. i. 253 ; Ste. 111. M. vii. 157, 9 ; 

 Wesm. Mem. couion. Ac. Belg. 1859, p. 19; Ilolmgr. Ichn. Suec. i. I2i ; if. Ent. 

 Tidskr. 1880, p. 83 ; Thorns. O. E. xviii. 1934 ; Berth Ann. Soc. Fr. 1894, p. 589, 6 ?. 

 /. multicolor, Gmel. S. N. i. 2678 ; Gr. I. E. i. 168 ; Ste. 111. M. vii. 141, excl 9- /. 

 paludator, Desv. Tr. Ent. Soc. 1854, p. 44, cj 9 . 



Head black, mandibles rufescent \ $ with internal orbits white and 

 clypeus truncate, the latter being slightly emarginate in ? . Antennae 

 black, first flagellar joint more than twice longer than broad, cylindrical ; 

 $ rather slender, setaceous, eighth joint quadrate, white-banded. Thorax 

 stout, black ; callosity beneath radix only, in both sexes, pale flavous ; 

 metathorax strongly sculptured ; areola transverse or sub-quadrate, emar- 

 ginate apically ; dentiparal arcae emitting short teeth and sinuate ai)ically. 

 Scutellum shining, obsoletely punctate ; apically, or in ^ entirely, stra- 

 mineous. Abdomen black, segment two of $ rarely badious ; segments 

 five to seven, and sometimes fourth, with a stramineous dorsal mark ; 

 post-petiole finely aciculate, slightly convex between the spiracles ; gastro- 

 caeli rather large and deep, obliquely sub-striate laterally, the intervening 

 space aciculate ; terebra slightly exserted. Legs somewhat slender, clear 

 red ; the coxae and hind tarsi black. Wings slightly clouded ; stigma 

 rufescent ; tegulae white-marked in $ ; areolet receiving recurrent nervure 

 distinctly before centre. Length, 14-16 mm. 



The strongly sculptured metathorax and its apophyses will at once 

 distinguish both sexes of this species from its allies. The colour of the 

 legs, the decurved and apically nearly right-angled post-petiole with its 

 elevated dorsal carinae, and the space between the deep thyridii being 

 hardly broader than the latter, are very like /. cessator ; but, in the ? , the 

 black flagellum with its six semi-annulated joints, three anal marks and 

 the scutellum whitish, stouter posterior tarsi, whitish callosity beneath the 

 radix, and, in the S , the white tegulae and radix, flagellum entirely black, 

 scutellum abruptly declived at the apex which is sub-quadrately white- 

 marked, are distinctive points. 



I find this species has been hitherto mixed in Britain with Chasmias 

 paludicola, Wesm., from which, however, it may at once be known by 

 its broader form, longer antennae, which are not tricoloured, by its less 

 buccate head, the white-marked thorax having the costulae entire and the 

 areola not longer than broad, &c. 



Stephens records the male rarely from about London, in July, and the 

 female, from the north of England. Bignell bred it, in Devon, during the 

 first half of September, from Nonagria caiinae ; and Marshall has taken 

 it at Lastingham, in Yorks. It is recorded from Maldon, in Essex ; and 

 has been bred in Britain, from Nonagria typ/iae, and N. geminipuncta. 

 Desvignes tells us it was bred not uncommonly from larvae or pupae of 

 Nonngria paludicola {\\h.-=geininipuncta, Htch.) found in the Hammer- 

 smith Marshes, by Mr. S. Stevens ; one of Uesvignes' specimens is in 

 Marshall's collection. On the Continent it has a wide range, from Pied- 

 mont to Sweden, and from Hungary to France. 



38. Haglundi, Holmgr. 



Ichneumon Hai^lundi, Ilolmgr. Ichn. Suec. i. 129 ; Berth, Ann. Soc. Fr. 1894, 

 P- 595> i ? ; Thonis. O. E. xviii. 1935, excl. c5 , 



