STIGMUS PENDULUS. 169 



Genus 5. STIGMUS. 



Stigmus, Jurine, Hym. 139 (1840). 



Head subquadrate, a little wider than the thorax ; eyes ovate ; 

 ocelli in a triangle ; antennae inserted at the base of the clypeus ; 

 the labrum concealed ; mandibles dentate. Thorax ovate ; the 

 metathorax truncated and elongate ; the anterior wings with 

 the stigma very large, with one marginal and two submarginal 

 cells; the marginal cell acute at the apex ; the first submarginal 

 twice the size of the second, and receiving the recurrent nervure 

 beyond the middle ; the second submarginal nearly square ; the 

 legs simple. Abdomen petiolated, the petiole rather longer than 

 the first segment, and narrowest at its base ; the abdomen oblong, 

 and pointed at its apex. 



1. Stigmus pendulus. 



S. niger; mandibulis testaceis; pedibus anterioribus et tarsis 

 posticis ferrugineis. 



Stigmus pendulus, Panz. Faun. Germ. 86. 7. 



Van d. Lind. Obs. ii. 74. 1. 



Shuck. Foss. Hym. 181. 1. 



Dahlb. Hym. Europ. i. 1. 



St. Farg. Hym. iii. 98. 1. 



Wesm. Hym. Foss. Belg. 122. 1. 

 Stigmus ater, Jurine, Hym. 132. t. 9. gen. 7. 



Spin. Ann. Soc. Ent. Fr. (1840) p. 35. 



Female. Length 3 lines. Black and shining; the head with an 

 impressed line running from the anterior ocellus to the inser- 

 tion of the antennae ; the antennae ferruginous, slightly stained 

 above, the middle of the scape dusky ; the mandibles reddish 

 yellow. Thorax: the collar longitudinally striated ; the meta- 

 thorax rugose, with a central longitudinal carina above, and 

 also a slightly curved one on each side ; the tubercles white 

 behind ; the wings hyaline, and beautifully iridescent ; the 

 tegulae rufo-testaceous ; the anterior and intermediate tibiae, all 

 the tarsi, the posterior tibiae at their base, and the tips of the 

 femora, pale ferruginous. Abdomen petiolated, the petiole 

 longer than the first segment, with a longitudinal carina 011 

 each side, and the interstices roughened ; the apex acute. 



Male. Length H line. The male only differs in having the 

 face silvery, and the antennae and mandibles paler; in other 

 respects there is scarcely any difference. 



I 



