206 BRITISH ICHNEUMONS. [Lissomta. 



16. sulphurifera, Grav. 



Lissouota sulphurifera, Gr. I. E. iii. 39 ; Holmgr. Sv. Ak. Handl. 1860, n, 10, 

 p. 53 ; Tasch. Zeits. Ges. Nat. 1863, p. 28(3 ; Thorns. O. E. viii. 762 et xiii. 1418; 

 Schrn. Zool. Jahr. 1900, d. 359, s ? . Meniscus caudatus, ? et M. afftnis, s , 

 Szepl. Terra. Fiiz. 1900, p. 37. L. rimator, Thorns. O.E. viii. 7(52 et xiii. 

 1418, i ? . 



A densely punctate, slightly shining and nearly entirely black species, 

 with red legs. Head only slightly narrowed behind the eyes, with cheeks 

 and temples subbuccate ; apex of clypeus, palpi and labrum ferrugineous ; 

 J usually with the mouth except apices of mandibles, clypeus, and the 

 facial orbits more or less distinctly, testaceous or sulphureous. Antennae 

 usually immaculate, though in ^ sometimes ferrugineous beneath. 

 Thorax black, punctate and a little nitidulous, in $ with a small flavidous 

 dot at the radix and very often a more or less distinct concolorous line be- 

 fore it ; metanotum scabrous, not canaliculate ; petiolar area basally 

 entire, not or only laterally striate. Scutellum black. Abdomen either 

 entirely black or with the apical margin of the third segment very nar- 

 rowly castaneous, of J more slender ; basal segment at least twice longer 

 than broad, a little narrowed basally, scabriculous ; second and third 

 transversely aciculate and finely punctate, somewhat longer than broad in 

 J or subquadrate in 9 ; fourth of J quadrate ; terebra longer than the 

 body (body lo, terebra ii,mm.) with the spicula badious. Legs red 

 with the hind tarsi and only the apices of their tibiae always black ; coxae 

 and trochanters usually black, 9 with apices of the latter red, ^ with 

 both usually though not al\^•ays red-marked and the anterior flavous 

 beneath; claws red and double length of the pulvilli. Wings normal, 

 somewhat clouded ; stigma and radius piceous or rarely testaceous ; radix 

 and the $ tegulae stramineous, latter in 9 infuscate or flavidous ; areolet 

 petiolate or subpetiolate and nearly regular, emitting the recurrent nervure 

 from near its centre. Length, 7 — 1 1| mm. 



Not uncommonly all the coxae are red. 



This species is said by Gravenhorst to be similar to Z. imprcssor ; but it 

 is easily known by the entirely or nearly entirely black abdomen, elongate 

 three basal segments of $ of which the first is scabriculous and nearly 

 parallel-sided, the terebra longer than the body and the shortly petiolate 

 areolet, which emits the recurrent nervure from a little beyond its centre. 

 The colouration of the $ coxae, head and mesopleural hamate marks is 

 very variable in extent and all are rarely wanting. /.. rimator, Thoms., is 

 no more than a form, which is very common in Britain, of this species, 

 with the mesosternal sulcus more deeply impressed, the $ coxae and 

 trochanters pale and no flavcscent lines before the radix; but it is not 

 constant. 



