ITOPLECTIS. 169 



Genus ITOPLECTIS, Forst. 

 Itoplectis, Furster, Verb. pr. Rlieiiil. 1868, p. 164. 

 GrEXOTTPE, Ichneumon maculator, F. 



This genus is so closely allied to Pimpla (s. s.) that it lias for 

 long had a precarious existence and no detailed description is 

 requisite. Therefrom it may at once be known by the distinctly 

 attenuate antennae, elongate and recumbent thoracic pubescence, 

 and usually tricoloured hind tibiae. The clypeus is not apically 

 emarginate; nervellus intercepting always above the centre ; the 

 metathoracic spiracles always small and usually circular ; notauli 

 obsolete ; frontal orbits imiuaeulate ; tarsal claws l)asally not 

 lobate ; cheeks very shorr, 



Banye. Holarctic region. 



Table of Species. 



1 (4) Anterior coxre and trochanters mainly 

 or entirely black. 



'2 (3) Frons closely punctate ; hind tibire tri- 

 coloured alfcrnans, Grav., p. 109. 



3 (2) Frons not punctate ; hind tibiaj bi- 



coloured orientalis. sp. n.. p. 171. 



4 (1) Anterior coxie and trochanters entirely 



stramineoiis sikkime)tsis, Cam., p. 172. 



113. Itoplectis alternans, Grav. 



Fimjjla alfenums, Gravenborst, Ichn. Eur. iii, p. 201 ; Hatzeburg, 

 Iclm. For.st. ii, p. 92 ; Taschenberg, Zeits. Ges. Xat. 1863. p. 56; 

 Schmiedeknecht, Zool. Jahr. 1888, p. 491 (J $); cf. Yollen- 

 hoveu, Pinac. pi. ix, tig. 8 et Kriechbauraer. Ent. Xachr. 1887, 

 p. 116. 



P. tricincta, Thomson, Op. Ent. viii, p. 748 et xiii, p. 1408 (J $). 



(5 2 . A dull black species, with short, obsolete thoracic pilosity 

 and usually tricoloured tibiae. Head immaculate, short, transverse 

 and a little narrowed behind the eyes; face distinctly pilose and 

 closely punctate, especially in the centre ; frons deplaiiate, closely 

 ])unctate and not centrally canaliculate ; vertex narrow and later- 

 ally pubescent; palpi white or stramineous. Ant eanoi not i\mie 

 tiliForni, slightly incrassate towards the apices, nearly as long as 

 the body, ferruginous or testaceous with tlie joints apically darker, 

 beneath paler with the disc-ally black scape flavous. Thorax 

 gibbulous and black, with a pale callosity before the radix ; meso- 

 notum closely and confluent ly punctate, with short, somewhat 

 sparse and subsetigerous jiilosity, and very obsolete notauli ; the 

 pleurae strongly nitidulous between the fine punctures ; metathorax 

 centrally glabrous throughout, with the areola basally subcostate 

 and parallel-sided, apically widened and convergent with the 

 petiolar area ; spiracles small and circular (except in my var. 

 spiracidaris). ScuteUum black, subdeplanate, obsoletely punctate 



