Arenefra.] BRITISH ICHNEUMONS. 175 



host, probably not lepidopterous, since we at present know nothing whatever 

 of the economy of this abundant species. Nees von Esenbeck took several 

 males, in the middle of May, of L. pallidipes flyinj^ gregariously around 

 lime trees and dancing in the air like Chinmomi ; no females were with 

 them. 



ARENETRA, Holmgren. 



Holmgr. Ofv. 1859. p. 127 ; Sv. Ak. Handl. 1860, p. 46 ; Lasiops, Holmgr. Ofv. 

 1854, p. 69 (necRond.). 



Whole body clothed with erect, elongate, black or grey pilosity, shorter 

 on abdomen. Head transverse, punctate and \illose ; eyes oval and not 

 approximate ; clypeus apically depressed and subtruncate ; mandibles 

 moderately broad, apically contracted with unequal teeth. Antennae sub- 

 filifomi and in 9 shorter than body ; apical joints discreted. Thorax 

 stout and \erv strongly punctate; notauli obsolete or wanting; metathorax 

 rugosely punctate with no trace of any areae, but apicall\- subproduced 

 above petiole ; spiracles small and subcircular. Scutellum strongly ele- 

 vated and pilose, coarsely punctate and immaculate. Abdomen deplanate 

 or in 9 apically subcompressed, black ; basal segment longer than broad 

 and longitudinally rugose with the following much smoother ; ^ valvulae 

 exserted ; terebra shorter than abdomen and slightly reflexed. Legs 

 slender ; tarsal claws simj)le and somewhat large, fully double length of 

 pulvilli ; apical tarsal joint not, or in 9 ^^lightly, longer than penultimate 

 and rather more than two-thirds as long as the third. Wings ample with 

 areolet entire, large, broadly triangular and emitting recurrent ner\-ure 

 before its centre ; radial nervure straight ; trans\-erse anal nervure of 

 lower wing quite straight, opposite and intercepted by the pellucid ner- 

 vellus at exactly its lower third. 



Thomson says (O. E. viii. 758) that this genus diflers from Lissoiw/a 

 only in the pilose thorax and wanting metathoracic costae ; the legs, how- 

 ever, are finer, the apical flagellar joints rather more discreted, the thorax 

 more coarsely punctate and the areolet has tlic outer nervure entire and 

 not at all cur\cd. Van Vollenhoven remarks upon the somewhat narrow 

 " implantation " of the abdomen. The genus is easily recognised by the 

 shaggy capital and thoracic villosity, wanting petiolar area and broad 

 areolet. 



The only other species included herein b\- Holmgren is now relegated 

 to the Banchides, witli which thi' present genus is distantly related in its 

 convex scutellum, subcompressed anus and broad areolet, which, unlike 

 Lissonola, emits the recurrent nervure before its centre. 



