176 BRITISH ICHNEUMONS. [Aremfra. 



1. pilosella, Grav. 



Tryphonpiloselhis, Gr. I. E. ii. 125, <? . Lasiops pilosella, Holmgr. Ofv. 1854, 

 p. 69, <? ? . Arenetra pilosella, Holmgr. Sv. Ak. Handl. 1860, n. 10, p. 46 ; Voll. 

 Pinac. pi. xiv, fig. 1, <? ; Schni. Opusc. Ichn. 12r)8. Lissonota pilosella. Tasch. 

 Zeits. Ges. Nat. 1863. p. 286, d 5 . 



Head pilose and very coarsely punctate throuj,^hout. Antennae subse- 

 taceous, of 9 three-quarters, of S (Exactly as long as, the body with scape 

 pilose ; flagellum of 9 with apical joints transverse and somewhat dis- 

 tinctly discreted with the last nearly circular and apical ly strongly obtuse ; 

 J with the three apical joints subdiscreted and the last nearly twice 

 longer than broad. Thorax gibbous and pilose, strongly punctate and 

 immaculate. Abdomen subcylindrical and sericeous, a little narrower and 

 distinctly longer than the head and thorax ; basal segment subcanaliculate 

 and pilose, twice longer than apically broad, longitudinally striate through- 

 out and punctate to beyond the centre only ; following segments ob.so- 

 letely reticulate and nitidulous ; ventral segments entirely or apically 

 rufescent ; S valvulae elongately exserted, longer than seventh segment, 

 entirely ferrugineous and apically truncate ; 9 hypopygium extending to 

 apex of anus ; terebra slightly longer than half abdomen (terebra 2f ^ 

 abdomen 5, mm.), fulvous and reflexed with valvulae infuscate and apically 

 truncate. Legs slender and somewhat dark fulvous ; coxae and trochan- 

 ters black and pilose ; J with at least the base of the anterior femora 

 infuscate, often hind ones mainly black, and the front tarsi darker than 

 the hind ones. Wings normal, hyaline or in 9 ^ little infumate ; stigma 

 infuscate, sometimes ferrugineous internally ; radix testaceous, tegulae 

 black ; areolet regularly and broadly triangular or subpentagonal, sessile. 

 Length, 9 — 1 1 mm. 



This rare species has never been recorded as British, but in the Revd. 

 T. A. Marshall's private copy of his 1872 Catalogue, I find a note of his 

 upon this insect: "Taken by Cameron on Ben Lawers, April loth " ; this 

 is in Perthshire, with an altitude of nearly 4000 ft. (iravenhorst knew 

 but a single male from Austria ; Holmgren says it is passim in sandy 

 places in Sweden ; Taschenberg took it at Halle, in Saxony. Van Vollen- 

 hoven remarks upon its great rarity and suggests that perhaps it occurs 

 only in the first days of spring, before collectors are in the field ; it had 

 not been found in Holland in 1876, nor in Belgium in 1897; nor has any- 

 thing hitherto been published respecting its economy. At the end of 

 igo2, Musham sent me from Lincoln a female of this insect, which he had 

 bred from an unknown lepidopterous host on 23rd December; and on 

 I oth of the following February a male emerged from the same batch of 

 pupae, which he was then able to identify as those of Phigalia pilosaria, a 

 common Geometrid appearing on the wing from December to March ; 

 evidently its parasite appears at the same inclement season, confirming 

 Vollenhoven's assumption. 



