Ernestia. 505 



is known especially as parasite on Panolis griseovariegata, and fiirther 

 on Dendrolimiis pini, and Nielsen (Entom. Meddel. 2, IV, 1909, 48) 

 bred it from Taeniocampa stabilis; he states that only one parasite 

 develops in each host. The larva bores out of the host larva and 

 pupates in the groiind, where it hibernates, the imago developing in 

 May. Nielsen states the curious faet that the larva in the second 

 stage has no anterior spiracles, and Prell (Zeitgchr. f. angew. Ent. 

 2, 1915, 141) came to the same result. — I have seen a specimen 

 labelled as bred from Cymatophora flavicornis on ^/4 (Weis) and one 

 from Gnophria rubricollis (Wiistnei). 



Geographical distribution: — Europe; towards the north to 

 southern Sweden. 



9. E. Nielseni Villen. 



1921. Villen. Bull. Soc. Ent. de Fr. 118 {Panzeria). — Panzeria minor 

 Villen. et Niels. 1917. Vidensk. Meddel, fra Dansk naturh. Foren. 68, 23. — 

 1921. Baer, Zeitschr. f. angew. Ent. VII, 135. — 1924. Stein, Arch. f. Natur- 

 gesch. 90, 6, 51, 1, as sp. n. {Ernestia). 



Male. This species is very similar to rudis, so that I shall give 

 only the differences, It is considerably smaller. Frons broader than in 

 rudis, nearly one third of the eye, cheeks on the contrary narrower; 

 these latter a little hairy just below^ frontal bristles. Antennæ black, 

 third joint distinctly longer than second. Generally two, sometimes 

 three pairs of postsutural acrostichals. Scutellum with four marginal 

 bristles on each side, the middle pair long, parallel or diverging; no 

 Crossing apical bristles. Bristles on abdomen rather weak, the discals 

 on third and fourth segment often rather numerous and somewhat 

 irregular. The hypopygium (as far as I have seen) mainly as in rudis, 

 but upper forceps distinctly carinate along middle. The three last 

 joints on front tarsi less cordiforme than in rudis \ claws and pulvilli 

 not very elongated. 



Female, Frons broader than the eye. Antennæ with second 

 joint red. Four last joints on front tarsi distinctly dilated, but les.«^ 

 than in rudis. 



Length 8 — 10 mm. 



E. Nielseni is not rare in Denmark; Dyrehaven, Geel Skov, 

 Grib Skov, Jægerspris, Bognæs; in Jutland at Sønderborg and Au- 

 gustenborg; the datas are ^/g — •*/,. The species was bred by Nielsen 

 (1. c.) from larvæ of Taeniocampa pulverulenta and Calymnia trape- 

 zina. As a rule only one parasite develops in each host; the larva 



