200 BRITISH ICHNEUMONS. [TJssonota. 



and meso-sternum, margin of propleurae, a dot on mesopleurae, a line 

 below and an elongate one before the radix, a hamate mark on either side 

 of the mesonotum and rarely the pronotum, flavous ; pleurae dull through- 

 out ; metathorax of 9 evenly and very finely and transversely aciculate- 

 punctate, of ^ scabriculous, with no trace of areae but the petiolar area 

 basally distinct and very rarely a longitudinal impression on the disc. 

 Scutellum immaculate or in ^ uncommonly (form typ.) flavous. Abdo- 

 men somewhat shining and distinctly though \exy finely reticulate ; basal 

 segment of (J more than, of 9 about, twice longer than apically broad 

 with its apex red ; second and third red and longer than broad, remainder 

 subglabrous with the fourth basally or mainly and in ^ the fifth, red, 

 centrally more or less broadly dotted or fasciated with black ; terebra as 

 long as the body. Legs red with the hind tarsi infuscate ; 9 with the 

 hind or posterior trochanters above alone nigrescent ; J with the anterior 

 coxae and trochanters entirely, and the hind ones apically or externally, 

 clear flavous and the hind ones basally or internally quite black. Wings 

 hi^aline or a little clouded, of 9 somewhat small ; stigma testaceous, 

 radix and tegulae stramineous; areolet sessile and triangular; radius 

 apically quite straight ; nervellus opposite and intercepted at its lower 

 fourth. Length, 7 — 8 mm. 



It is slightly variable in the extent of the flavous markings on head and 

 (5 thorax ; the 9 vertical dots are rarely obsolete or even wanting, the 

 ^ hind coxae are occasionally mainly flavous and its scutellum is usually 

 entirely black. The variety arvicola is a (J with the face, except its orbits, 

 black ; no pale marks on the mesopleurae ; the scutellum black and the 

 abdomen concolorous with the second segment alone apically testaceous 

 or whitish-fulvous ; the legs entirely fulvous ; the stigma piceous, and 

 areolet minute and petiolate ; length, 3^ lines (y^- mm.). Gravenhorst 

 knew but one example of this form, taken on umbels near Gottingham in 

 the middle of August, and compares it with L. segmcniator, with which it is 

 said to be similar in conformation, though the legs are shorter and anten- 

 nae stouter. 



This is among the smallest of the red-bodied species of the present 

 genus and easily distinguished, except from L. argiola Avhich is much 

 stouter, by the frons being distinctly narrower than the face, the two basal 

 segments very finely scabriculous in $ or reticulate in 9 , the terebra as 

 long as the body and the areola totally wanting. 



It is a very common kind throughout Europe, but has not been bred 

 on the Continent unless one relies upon Ratzeburg's reference {loc. at.) to 

 the emergence of L. anncola from beech logs containing Anobii and 

 Ptilini. Both sexes have been bred by West (Proc. S. Lond. Soc. 1896, 

 p. 86) from an unascertained host; Bridgman (Trans. Norf. Soc. 1893, p. 631) 

 records it from Botys asinalis and Buckler, in his Larvae, from Trochiliuni 



