DRYOPHANTA FOLII. 123 



Cynips folii, Htg., Germs. Zeits., ii, 187 ; Thorns., Opusc, 790. 



— scutellaris, Schenck, Nass. Cyn., 56. 

 Dryophanta scutellaris, Adler, Zeits. wiss. Zool., xxxv, 186, 

 pi. xi, fig. 14 ; Licht., Cyn., 48, pi. ii, 

 fig. 14. 

 — folii, Mayr, Europ. Cyn., 36. 



Spathegaster Taschenbergi, Schlecht., S. E. Z., 1870, p. 391; 



Adler, Zeits. wiss. Zool., xxxi, 

 188, pi. xi, fig. 14 a; Licht., Cyn., 

 50, pi. ii, fig. 14 a. 

 Dryophanta Taschenbergi, Mayr, Europ. Cyn., 35. 



Agamic form. — Black ; the orbits, sometimes the pleura?, more or less 

 of the mesonotum and of the scutellum, reddish-brown ; the legs black, 

 with the femora reddish-yellow, and tibiae more or less brownish ; wings 

 elongate, hyaline, the nervures pitchy, the base of the radial cellule and 

 the cubitus blackish, the nervures there thickened ; the twelfth an- 

 tennal joint as long as broad ; antennae brownish-black, the first and 

 second joints sometimes reddish. 



Length 3 to 3 - 5 mm. 



The femora are often lined with black. The hair is 

 long and thick, and is equally distributed over the 

 mesonotum, in which respect it differs from agama. 



Gall. — The largest of the pea-shaped galls found on 

 the underside of the leaf, but as regards its size it is 

 well to note that in this respect it varies from 3 to 12 

 mm. in diameter. It is found on the mid rib on the 

 underside of the leaf, to which it is attached by a 

 very small part only. It is spherical, smooth, some- 

 times with minute warts, yellowish-white, with 

 usually the cheeks broadly bright red ; soft and 

 spongy, drying up when old, the surface then becom- 

 ing irregular and gibbous. 



It is found in July, falls to the earth when ripe, and 

 delivers the fly in October. 



The only inquilines mentioned by Mayr are Syn- 

 ergus pallicomis, S. Tschehi, Sapholytus connafMS, but 

 Hartig gives 8. vulgaris and Neuroterus parasiticus as 

 tenants. 



The parasites are Syntomaspis lazulina i Torymus 

 abdominalis, T. regius, Decatoma biguttata, Eurytoma 

 setigera, Mayr; E. rosoe. Kirchner mentions also 

 Torymus incertus, Foer. ; Pteromalus jucundus, Foer. ; 

 and P. fasciculatus. Ratzeburg records Porizon clam- 



