Lissotiota.] BRITISH ICHNEUMONS. 211 



19. Halidayi, Holmgr. 



Lissonota Halidayi, Holmgr.* Sv. Ak. Handl. 1860, n. 10, p. 59 ; Schm. Zool. 

 Jahr. 1900, p. 368 ; Opusc. Ichn. 1302, ? , L. formosa, Bridg. Trans. Ent. Soc. 

 1887, p. 378, ? . 



9 . Black. Head transverse and obliquely narrowed behind the 

 eyes, mouth, clypeus and the internal orbits to vertex flavous. An- 

 tennae shorter than the body. Thorax punctate ; prothorax with its back 

 part red and upper part flavous, lines on propleurae concolorous ; meso- 

 thorax entirely red ; meso- more finely punctate than meta-notum ; a tri- 

 angular mark on the shoulders and tubercles flavous ; metanotum some- 

 what distinctly impressed centrally, and metapleurae red. Scutellum red, 

 with its sides flavous. Abdomen with the three basal segments somewhat 

 strongly punctate and apically nitidulous ; basal segment about one-third 

 longer than broad, apically castaneous ; second and third longer than 

 broad, with their apical margin castaneous ; fourth more finely punctate 

 and the third to seventh laterally castaneous and apically whitish ; terebra 

 about as long as the thorax and abdomen. Legs red, with the anterior coxae 

 and trochanters flavous ; hind trochanters above, posterior tarsi slightly, 

 infuscate. Wings subhyaline ; stigma pale testaceous ; radix and tegulae 

 pale flavidous ; areolet subsessile, emitting the recurrent nervoire beyond 

 its centre ; nervellus intercepting below the centre. 



(^ . This sex differs very little from the 9 : the cheeks, face except the 

 lateral clypeal foveolae and sometimes two longitudinal lines, scape 

 beneath, most of the mesopleurae and whole of the hind trochanters are 

 also flavous ; the scutellum is entirely flavous, with only its extreme apex 

 sometimes rufescent; the anal valvulae are exserted and as long as the 

 apical segment ; the antennae are as long as the bod)', slender and slightly 

 pilose ; metanotum is not impressed and bears very small circular and 

 somewhat conspicuous spiracles. Length, 5 — 6h mm. 



Bridgman says the female of this species is very like L. ''ariabilis and 

 L. cidiciformis, but that it differs, besides its rich colouration, from the 

 former in its distinctly punctate abdomen, rather more coarsely punctate 

 mesonotum and posteriorly less obliquely narrowed head, though the 

 structure of the wings is identical ; and from the latter in the somewhat 

 longer second and third adominal segments. There can, I think, remain 

 no doubt concerning the synonymy of these two descriptions of the 9 ; 

 I., formosa is not said to have the sides of the scutellum nor apices of the 

 apical segments flavous, and in L. Halidayi the second and third seg- 

 ments are described as longitudine nonihil latioribus but they are in my 

 specimens quadrate ; the colour of the hind knees varies and they are 



♦ " Celeberrimo et oculatissimo Britanniae Entomologo HALID.Wspeciem hancdedicare ejusque 

 nomine insignire, gratum officium ezistinavit Holmgren." 



P2 



