Labrossyta | BRITISH ICHNEUMONS. 131 

LABROSSYTA, Forster. 
Foérst. Verh. pr. Rheinl. 1868, p. 202; Labrossytus, Thoms. O. E. xix. 2001 ; 
Lapaphras, Cam. Journ. Bombay Nat. Hist. Soc. 1902, p. 428. 
Head with the eyes not internally emarginate ; clypeus apically rounded 
and strongly punctate ; mandibles not stout, with the lower tooth longer 
and stronger than the upper. Antennae filiform. Thorax with no 
notauli, epomiae nor areae, and the epicnemia abbreviated above ; meta- 
pleural carinae distinct. First abdominal segment short and not explan- 
ate basally with spiracles before centre, somewhat prominent and 
emitting no carinae to apex of segment; postpetiole laterally immargin- 
ate; second segment with no basal lateral carinae, nor thyridii. Legs 
not slender, with tibial calcaria short. Areolet distinct, irregularly 
oblique, petiolate, neither large nor rhomboidal; radius emitted far before 
centre of stigma; nervellus intercepted distinctly below its centre. Wings 
strongly infuscate. 
This genus differs from Syadipnus, of which it was considered to form 
a section by Thomson, in the possession of a distinct areolet, etc. So 
little has been known of its single palaearctic representative that Mar- 
shall left it in 1872, as placed by Stephens, in the genus 77yphon ; Bridg- 
man considered it a Peridissus. ‘Two American and one Indian species, 
the type of which I have seen, are known in this genus. 
1. scotoptera, Grav. 
Ichneumon scotopterus, Gr. Mem. Sc. Torin. 1820, p.377, ¢ 2. Trypbhon 
scotopterus, Gr. I. E. ii. 244; Ste. Ill. M. vii. 250; Fonsc. Ann. Soc. Fr. 1849, 
p. 225, ¢ @. Syndipnus (Labrossytus) scotopterus, Thoms. O. E. xix. 2001. 
Perilissus fumatus, Bridg. Entom. 1880, p.54; cf. Trans. Ent. Soc. 1889, p. 432 
et Trans. Norf. Soc. v, p.625. 
A bright orange insect with the wings very strongly infumate and the 
head, thorax and basal segment alone black. Mouth flavidous; antennae 
infuscate above. Scutellum black, convex and glabrous; metathorax 
evenly rounded and declived with erect griseous pilosity, but no areae. 
Abdomen smooth and shining with spiracles of the basally constricted 
and mainly black first segment prominent and distinctly before its centre. 
Coxae and tarsi alone nigrescent. Length, 6 mm. 
Very distinct from all other Tryphoninae in the nigrescent wings; the 
abdomen is said to be rarely partly infuscate. I cannot understand Strobl 
wishnig to place it next to the genus “rromenus, to which it bears but 
little relationship and least of all in its simple claws. 
Austria, France, Piedmont and in May near Breslau (Grav.); Fons- 
colombe and Thomson also record it from France. It has not been bred, 
but is probably parasitic on Nematids; except for the dark wings, it 
superficially resembles Pachynemalus albipennis, Htg. ‘ Rare: obtained 
from Mr. Haworth’s collection” (Steph.); “‘It is common in England, 
but I was without specimens until last summer, when I found them at St. 
Albans” (Marshall, Ent. Ann. 1874, p.144); there is one thence in his 
collection. One @, at Shere (Capron); one 2, “ Deal Sandhills, 1890” 
(Piffard). Earlham in June (Bridgman); and on 8th June, rgor, I too 
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