Kinsey: Studies of Cynipidse 



31 



On very large roots or on rootlets not 2. mm. in diameter; on black 

 oaks. 



RANGE.— Florida to Texas. 



This is a very distinct root gall. The insects pupate late 

 in the fall, soon becoming adults, but not emerging until early 

 in the spring. 



The three varieties I have seen are distinct as to color, two 

 of them remarkably so. It has been a mistake to completely 

 ignore variation in color as tho occurring without order 

 in any group of individuals. These color differences are cor- 

 related with very definite morphologic characters, and with 

 host and geographic distribution. It is too much to expect one 

 variety to become the next if transplanted from one oak to 

 another or one locality to another. But host and geographic 

 isolation have separated distinct forms in this species. The 

 galls of all of the varieties are very similar. 



Andricus ovatus variety ovatus (Weld) 



CaUirhytis ovata Weld, 1921, Proc. U.S. Nat. Mus., LIX, p. 222, pi. 34, 

 fig. 23. 



FEMALE. — Shows the following characters in addition to those 

 common to all varieties of the species: Color of head, thorax, and 

 abdomen bright brownish rufous; antennae light brownish rufous, the 

 last seven or eight segments browner; parapsidal grooves of moderate 

 width at the scutellum, not as broad nor as rugose at bottom as in 

 vielanicus, not converging as closely posteriorly; anterior parallel lines 

 rather close together anteriorly for almost half the length, almost twice 

 as wide apart posteriorly; the scutellum relatively shorter, the foveae 

 large, broad, broader laterally, mostly smooth at bottom, separated by 

 a fine, simple ridge; mesopleurte beneath the tegulae smoother, irregu- 

 larly roughened; legs entirely brownish rufous, including the coxae; 

 areolet rather small. 



GALL. — Quite the same as those of the other varieties; on Quercus 

 Catesbxi. 



RANGE. — Florida: Marianna, Ocala, Madison, Jacksonville (Weld). 



TYPES. — Holotype and paratype adults and galls at the U.S. Na- 

 tional Museum; paratype adults in my collection. U.S. National Museum 

 number 22569; from Marianna, Florida; Q. Catesbsei; Weld collector. 



Weld recorded having collected the type galls on October 

 11, 1919, when they contained pupse; living adults were cut 

 out of these galls on December 3. Empty galls were found at 

 Ocala on April 15, 1914. Probably emergence occurs late in 

 January or in February, as with melanicus. Weld further 



