Pezoinnchus?^ BRITISH ICHNEUMONS. 209 



56. intermedius, Font. 



Pezoiiiachus intermedins, FiJrst. Wiegm. Arch. 1S50, p. 156,?. P. f hi ax, Forst. 

 lib. cit. p. 185, ?. (?) P. aiiguiuus, Forst. lib. cil. 1 851, p. 39, i . 



9 . Antennae strongly elongate, with the two basal joints long and 

 sub equal ; the fifth fully twice longer than broad. Meso- and meta-thorax 

 of equal length ; petiolar area somewhat oblicjue, its basal costa not very 

 strong and sometimes obsolete centrally. Scutellum distinct, though 

 hardly discreted from the mcsonotum. Abdomen densely punctate, and 

 very distinctly and closely pubescent to the apex ; basal segment gradually 

 explanate with no or hardly any interruption from base to apex, its spiracles 

 not or hardly projecting ; terebra as long as the basal segment. 



Head black ; antennae usually, sometimes broadly, red basally ; apically 

 infuscate. Thorax red in the type form but usually more or less, some- 

 times entirely, black. Abdomen black ; basal segment often more or less 

 red ; second usually with all its margins red, remainder immaculate. Legs 

 red ; coxae often black or piceous ; femora, apices of tibiae and apical 

 tarsal joint always infuscate. 



(?. Head black, with mandibles red, genal costa entire; vertex not 

 contracted behind the eyes. Antennae elongate ; basal flagellar joint 

 longer than second ; fifth fully twice longer than broad ; scape and basal 

 flagellar joint testaceous, second apically red, rest piceous. Meso- and 

 meta-thorax of equal length, dark red ; pro-, meso- and base of meta- 

 thorax rufescent, with pleurae nearly black ; petiolar area sub-vertical, its 

 basal costa normal. Abdomen moderately punctate and pubescent ; 

 petiole testaceous with infuscate base and apex, spiracles sub-prominent ; 

 post-petiole longer than broad, rufescent ; second segment with all the 

 margins broadly red, remainder black. Legs red -yellow. Length, 

 2|-3f mm. 



I quite fail to find the least difference between this species and P. furax, 

 and Thomson also considered them identical f^. Trans. Ent. Soc. 1886, 

 p. 341), though Forster says the latter has the antennae rather longer, 

 the petiolar area more oblique and terebra shorter. It also resembles 

 P. sericeiis, Forst., from which the long antennal joints differ. 



Bridgman says (Trans. Ent. Soc. 1881, p. 155) that the female is far from 

 rare in Britain, and occurs numerously about Norwich, Mickleham and 

 Hastings ; he has adopted the above synonymy in his collection, where is 

 a single male example. Beaten from whitethorn hedges at Exminster 

 (Bignell, Entom. 1882, p. 45); occurs in Essex (Vict. Hist.) ; common at 

 Ap[)ledore and Harting (Beaumont) ; (iifford and Harburn in Midlothian, 

 in April and October (Evans) ; Surrey (Capron). This species has been 

 noticed by W. liarnes to associate with Formica sa/ixni'ien about Reading. 

 Tuck has taken it at Finborough Park, Norton Wood and Bungay in 

 Suffolk ; riffard commonly at Felden ; Capron at Shere ; Marshall at 

 Nunton in Wilts. ; W. Ellis at Knowie and in the New Forest ; and 

 Newbery at Gwydir near Trefrivv, in August. It is excessively abundant 

 on Coniferae everywhere, and I have found it during every month of the 

 year but January, in sand-j)its, beneath stones, by sweeping herbage and 

 dead reeds, and in tufts of Aira caespiiosn, in winter, at lientlcy Woods, 

 Foxhall, Oulton Broad, Dodnash, Bramford, Felixstowe and Lyndhurst. 

 Charbonnier has sent me two females bred at Publou in Somerset, during 



p 



