86 ANDEIOTJS SIEBOLDII. 



6. Andrious SibbotiDIi. 



PI. V, fig.. 4 (Sieboldii) and 4 a (testaceipes), galls; 

 PI. XIV, figs. 3 {Sieboldii) and da (testaceipes). 



Cynips Sieboldii, Htg., Germs. Zeits., iv, 406. 



— corticalis, Schenck, Nass. Cyn., 63. 

 Apliilofhrix Sieboldii, Mayr, Eichengallen, 8, pi. i, fig. 5 ; 

 Adler, Zeits. f. wiss. Zool., xxxv, 171, 

 pi. x, fig. 6 ; Licht. Cyn., 27, pi. i, 

 fig. 6 ; Fitch, Essex Field Club, 133, 

 fig. 19. 

 • Andricus testaceipes, Htg., Germs. Zeits., ii, 191 ; Adler, 1. c., 

 172 ; pi. x, fig. 6 a ; Mayr, Europ. Cyn., 

 18 and 28; Licht. Cyn., 28, pi. ii, 

 fig. 6 a ; Kaltenbach, Pfl., 666. 

 — Sieboldii, Mayr, Europ. Cyn., 25. 



Rufous or brownish-red, sometimes tbe sutures of thorax and base of 

 scutellum more or less blackish ; median segment blackish ; legs uni- 

 formly brownish-red, sometimes with the hind tibise infuscated. Scu- 

 tellum finely punctured. Second abdominal segment impunctate, uni- 

 colorous, the hair narrow only on the anterior portion of the segment ; 

 the third segment finely punctured. "Wings hyaline ; in the third 

 cubital cellule is a single indistinct, faint, narrow streak. Antennae 

 infuscated, paler at the base. Agamic $ . 



Length 3*5 — i"5 mm. 



This species comes near to radicis, but is smaller 

 than it, has the body almost unicolorous, less pilose, 

 the second segment is only haired at the apex, and 

 wants the two marks found in radicis, the faint line 

 in third cubital cellule does not diverge, and the 

 thorax is less pilose. 



Gall. — Found on small branches of young oaks, 

 especially near the earth, which frequently covers 

 them. They are gregarious, conical, dilated at the 

 base, woody and hard. When young the colour on 

 the upper region is reddish or pink, and covered with 

 a bloom and a gummy secretion. When old the sur- 

 face becomes longitudinally striolated, the exterior 

 bloom disappearing. The larval chamber occupies 

 the lower dilated part, which is sunk deeply in the 

 branch. The height of the gall is from 6 to 8 mm., 

 whereof about the third will be sunk in the branch. 



