208 BRITISH ICHNEUMONS. [Pezomachiis. 



30. anthracinus, Forst. 



Pezomachiis aiithran'inis, Fiirst. Wiegm. Arch. 1850, p. 123, 9 ; Thorns. O. E. x. 

 1008, excl. i; Bridg. Trans. Knt. Hoc. 18S2, p. 147, 6. 



$. Head with the genal costa inflexed and tlie sulcus ol)Solete ; eyes 

 sub-rotund ; mandibles tuberculate basally, strongly attenuate apically, 

 with acute teeth, of which the u[)per is the longer ; clypeus submarginate 

 and truncate apically ; vertex very broad and strongly emarginate. An- 

 tennae slender, filiform and as long as the body, basally sub-attenuate ; 

 basal flagellar joint about as long as the second ; fifth twice longer than 

 broad. Thorax with the mesonotum elongate and longer than the 

 metanotum ; petiolar area small, narrow and dull, with no basal costa ; 

 acetabula not reaching beyond the centre of mesosternum. Scutellum 

 distinctly indicated. Abdomen closely punctate and pilose ; basal segment 

 short and broad, not curved and scarcely longer than the hind coxae, with 

 tubercles indistinct, petiole slightly explanate and post-petiole rather 

 broader, slightly divergent laterally ; spiracles of second close to the 

 margins ; terebra shorter than the basal segment. 



Head, thorax and abdomen black ; palpi piceous ; apex of second 

 segment and base of the third, with antennal joints, lighter. Legs piceous, 

 with femora and tibiae partly red. 



S . Winged. Head sub-globose, not much broader than thorax ; fiice 

 prominent, separated from clypeus by a distinct impression terminating in 

 lateral foveae ; mandibles bidentate, with the teeth sub-equal ; vertex finely 

 reticulate. Antennae shorter than body ; flagellum sub-clavate, with the 

 basal joint more than twice longer than broad, and a third longer than the 

 second. Thorax finely reticulate with the metathorax rugose, areola in- 

 distinct and somewhat semi-oval ; lateral areae not discreted ; spiracles 

 small and circular. Abdomen with basal segment gradually slightly 

 explanate, aciculate-punctate, with no tubercles ; second sub-acicuiate and, 

 like the following, punctate ; the thyridii distinct, transverse and very 

 large ; anal styles prominent. Wings with no areolet and the neuration 

 very imperfect beyond the second recurrent ; radial cell short and broad. 



Head and thorax black ; mandibles and palpi pale ochreous. Abdomen 

 piceous, with the extreme margins of the basal segments flavescent. Legs 

 flavescent, with the hind coxae black, the posterior femora and hind 

 tibiae partly piceous. Wings with the stigma and nervures pale piceous 

 and tegulae flavous. Length, 2-3J mm. 



Thomson's male is certainly distinct, being apterous with filiform 

 antennae. 



The female is distinguished from F. exareolatiis, Forst., which also has 

 a winged male, by the longer antennae, broader vertex, shorter acetabula, 

 dull petiolar area and shorter terebra. 



Bridgman tells us (he. cit.) that Fitch bred one male with three females 

 from Elachista siibni^elta. There appear to be no other records of this 

 species, which, however, is not uncommon with us, since I have swept it in 

 boggy places in June, at 15arton Mills in Suffolk ; and in August at Dod- 

 dington near Faversham ; Elliott has also taken it in August in Tuddenham 

 Fen ; and Chitty at Huntingfield in Kent, in May. 



