ANDBICUS GLOBULI. 81 



Cyn., 20; Adler, Zeits. wiss. Zool., xxxv, 

 176, pi. x, fig. 8a; Licht. Cyn., 34, pi. i, 

 fig. 8 a ; Kirchner, Cat., 26. 

 Cynips inflator, Thorns., Opusc, 787. 



Agamic Form. — Black ; the abdomen brownish, more or less red at 

 the base and apex ; legs brownish-red, the coxae and four posterior tibise 

 infuscated ; antennae brownish ; mesonotum punctured, but not closely ; 

 the vertex only punctured slightly ; there is one smooth and glabrous 

 longitudinal line along the parapsidal furrows ; the fore-tibise with stiff, 

 erect, longish hairs. Agamic $ . 



Length 4 mm. 



Gall. — Found, as a rule, in the terminal leaf-bud, 

 enveloped by the scales so that only the apex is 

 visible. Conical, 3 — 5 mm. in length, green when 

 youDg, pale when old ; the apex terminating in a 

 conical point or wart, usually of a more or less reddish 

 or yellowish colour. When young the surface is soft 

 and sappy, which surface, on drying, forms irregular 

 reticulations or wrinkles. The inner surface next to 

 this sappy matter is also reticulated. 



This gall is easily known from those of autumnalis 

 and collaris by the shape being much shorter, more 

 globular, broader, and by the reticulated surface ; it is 

 also greener, and projects more out of the bud. 



I have not succeeded in rearing this insect myself. 

 According to Adler, although the larva reaches its 

 full development in October, it does not change then, 

 nor even in the following spring, but remains un- 

 changed till the autumn, coming out of the gall in 

 the fly state in the April following, thus taking two 

 years to reach full maturity. Adler says that only 

 one egg is placed in each bud ; and the laying of this 

 one egg occupies the fly twenty minutes. 



The only inquilines recorded are Neuroterus para- 

 siticus, Htg. ; Synergus nervosus, Htg. ; 8. vulgaris, 

 8. ruficomis, Htg. ; and the only known parasites are 

 Siphonura chalybea, Rtz. (cf. Schlectendal, Stett. Ent. 

 Zeit., 1870, 343) ; Torymus regius, Fab. ; Megastigmus 

 dorsalis (Giraud) ; Eurytoma rosse. 



Sexual Form. — Black ; the abdomen reddish beneath ; the base of the 

 antennae and legs reddish-yellow, the hind coxae black at the base, the 

 VOL. IV. 6 



