Kinsey : Gall Wasp Genus Cynips 
169 
the oak. It is possible that both the adults and galls of this 
bisexual form will resemble Cynips divisa form verrucosa. 
Ktistenmacher has briefly described the histologic structure 
of the galls of agama (acc. Darboux and Houard 1907). 
The insects of the Central European material of agama and 
divisa are even closer than their galls, agama differing 
primarily in its shorter abdomen, mesopleura with larger 
naked areas, and a second abscissa of the radius with a tip 
that is hardly enlarged. 
As far as the records indicate, agama is as strangely absent 
from the Mediterranean area of Europe as Cynips longiven- 
tris. Tavares’ record (1902, Ann. Sci. Nat. Porto 7:49) 
of agama in Portugal probably applies to Cynips divisa (see 
Tavares 1902, Rev. Sci. Nat. S. Fiel 1: 115), and the record 
for Spain is open to question (see Tavares 1928: 48). I have 
galls (Forsius coll.) from Finland that certainly belong to 
this species ; but the other Cynipidae from that region so often 
prove distinct that we shall wait insect material to determine 
whether another variety of agama is represented in more 
northern Europe. 
In Darboux and Houard’s publication (1907) of Giraud’s 
Galles de Cynipides the plate (number 22, figs. 9, 10) bearing 
the legend agama obviously represents Cynips disticha. Bayer 
(1908) has also pointed this out, and Houard himself (1909), 
Marcellia (8:70) has agreed to this interpretation. Figures 
4 to 6 on the same plate do represent agama. 
I do not feel that the Reaumur references (Reaumur 1737, 
Mem Ins. 3 : 416, 440, 445, 447, 448, pi. 35 figs. 3, 4) given by 
many European authors, including Dalla Torre (1893) and 
Kieffer (1901), may be interpreted with any certainty as one 
or the other of three closely related species, Cynips divisa , 
C. agama, and C. disticha. 
Cynips (Cynips) disticha liar tig 
agamic form 
Figures 20, 86, 105, 123-124, 133-134 
Cynips disticha Hartig, 1840, Germar Ent. Zeit. 2: 188 (9, ©). [NOT 
Hartig, 1841, Germar Ent. Zeit. 3 : 324] . Hartig, 1843, Germar 
Ent. Zeit. 4: 406. Reinhard, 1865, Berliner Ent. Zeit. 9: 6. Schenck, 
1865, Jahrb. Ver. Nassau 17-18:158, 176, 180, 223, 227, 250 ( 9, 
