Homocidus | BRITISH ICHNEUMONS. 107 
22. strigator, Fab. 
Ichneumon strigator, Fab. E. S, ii. 173, ¢. Pimpla strigator, Fab. Piez. 117; 
Grav. Germ. Mag. Ent. 1821, p. 268, ¢. Bassus strigator, Gr. I. E. ili. 330, ¢ 
(nec Holmgr.); cf. Thunb. Bull. Ac. Sc. Petersb. 1822, p.271 et 1824, p. 337, et 
Brisch. Schr. Nat. Ges. Danz. 1878, p. 112 et 1891, p.63. Homoporus strigator, 
Morl. Trans. Ent. Soc. 1905, pp. 428 et 434, ¢.* 
“ Niger abdomine striga alba, tibiis posticis albis apice nigris. ... Habitat 
Halae Saxonum Dom. Hiibner” (Fab.). Head with the mouth, face and 
cheeks flavous. Antennae beneath pale testaceous with the scape flavous. 
Thorax with a mark or broad line before and a little line below radices, 
propleurae, mesosternum and base of mesopleurae linearly, flavous. Scu- 
tellum either flavous with a black longitudinal line, or black with a 
stramineous dot on either side (or, var. 1, entirely flavous). Abdomen 
with the two basal segments scabriculous and the following smoother ; 
third to fourth or fifth with a basal flavous or whitish fascia, that on the 
third and rarely fourth centrally incised. Legs stramineous or pale ful- 
vous with all the coxae and trochanters flavous, and the hind ones black- 
marked ; hind tibiae whitish with their apices, a mark before their base 
and their tarsi infuscate or ferrugineous. Wings hyaline; stigma and 
radius piceous; radix and tegulae flavous; areolet subsessile and 
irregularly triangular. Length, s—6 mm. (Grav.) 9? unknown. 
Gravenhorst says this @ is similar to that of Bassus farsatortus, but that 
it differs in the possession of the areolet; he adds that Germar sent him 
the (type) individual, which Fabricius had named Pimpla sfrigafor in 
Hiibner’s collection, and that this differed from the remainder of his own 
specimens in having the third segment alone basally white. 
I must own that there is nothing very distinctive in Gravenhorst’s 
description, yet I possess a male so exactly agreeing with it in every way 
and so obviously distinct from any species brought forward by Thomson 
that I venture to here place it. 
My male is very like that of H. /arsaforius in general facies, but—be- 
sides the distinct areolet and scutellar colour, which exactly resembles 
that of H. fissorius—the second segment is longer, coarsely longitudinally 
strigose with the thyridii obsolete; metathorax rugulose and much 
narrower above the hind coxae, with the petiolar area centrally striolate 
and bearing some traces of a basal area; head narrower behind the eyes, 
with the vertex much less emarginate ; face more distinctly punctate, with 
the epistoma more prominent and cheeks shorter; clypeus similarly 
excised centrally but acuminately explanate at the sides ; antennae shorter 
and consisting of twenty-one flagellar joints; and the scutellum is very 
distinctly more convex and coarsely punctate. The areolet and sculpture 
will also distinguish it from H. fissorius ; and it appears to differ from /. 
megaspis, Thoms., in the sculpture of the metathorax and second segment, 
and in the hind tibial colouration. 
I do not know what species Bridgman understood by this name, he 
says it is “common” in Norfolk ; and Bignell, on the former’s authority, 
* Dalla Torre (Cat. Hym. iii. 780) has been led into the error of synonymising Jchnewmon strigator, 
Fab., correctly placed in Bassus by Gravenhorst, with Tricholabus strigatorius, Thoms. (the correct 
peer tag of which I have given at Ichn. Brit. i. 214) through a /apsus calam# of the latter who 
ascribes his species (O. E. xix. 2113) to Fabricius, in error for Gravenhorst. The synonymy given 
4 D. T. (/. c. 837) should be featiadenred to Tricholabus above Thomson's name, and the remainder 
of that at p. 780 placed in the Bassides. B. strigator is queried as synonymous with his Homoporus 
pictus, Gr. (O. E. xiv. 1512) and H. ruficornis, Holmer. (1. c. 1510) by Thomson. 
