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Indiana University Shidies 



Heteroecus chrysolepidis (Ashmead) 



Andricus chrysolepidis Ashmead, 1896, Proc. U.S. Nat. Mus., XIX, p. 119. 

 Dalla Torre and Kieffer, 1902, Gen. Ins. Hymen, Cynip., p. 62; 

 1910, Das Tierreich, XXIV, pp. 553, 824, 828. Fullaway, 1911, Ann. 

 Ent. Soc. Amer., IV, p. 346. Thompson, 1915, Amer. Ins. Galls, 

 pp. 9, 31. Felt, 1918, N.Y. Mus. Bull., 200, p. 68. 



FEMALE. — Differs from Hetercec^is dasydactyli variety dasydactyb 

 only in having the areolet quite small and the second abscissa of the 

 radius very slightly more angulate. 



GALL. — A small, irregularly globular or ovate bud gall. Mono- 

 thalamous. A slight nipple at the apex; the surface covered with a 

 fine, scurfy pubescence, light brovv^n in color; 7. mm. in diameter by 

 10. mm. long. 



RANGE.— California: Colfax (Koebele coll.) ; Diablo? (F. A. Leach 

 coll.). 



TYPES.— Adults and galls in the U.S. National Museum. Labelled 

 3066 and 3816. 



I have examined a type adult and a type gall. The insect 

 is very close to dasydactyli, but Mr. Rohwer reports that the 

 areolet is constant in size in all three of the types. The gall 

 is the most distinctive thing of the species. Galls from Diablo 

 appear to match the type galls, but I do not have insects to 

 check the determination. Unlike the type galls, some of the 

 Diablo specimens are clustered, suggesting H. mains, and inas- 

 much as the insects of the two are rather similar perhaps 

 mains should be considered a variety of chrysolepidis. 



Hetercecus dasydactyli (Ashmead) 



FEMALE. — Shows the following characters in addition to those 

 common to all species of the genus: Color of head and thorax rich 

 brownish rufous; parapsidal grooves fairly deep, moderately wide pos- 

 teriorly, less rugose at bottom than in two varieties of pacificus; median 

 groove distinct in two varieties, lacking in one; anterior parallel lines 

 very fine; foveas sparingly rugose in two varieties, almost smooth in 

 one; abdomen rich brownish rufous, darker dorsally; wing veins brown- 

 ish yellow, only moderately heavy, lighter than in any variety of pa- 

 cificus; areolet of moderate size; first abscissa of the radius arcuate, 

 with a slight suggestion of an angle; length 1.7-3.5 mm. 



GALL. — Spindle shaped, covered with long wool. Monothalamous, 

 occasionally bithalamous. Cylindrical, with a constricted base and an 

 apex which is long in one variety, the tip often curved; smooth, some- 

 times with a few, scattered, blunt tubercles; light green when young, 

 turning light straw brown to darker; completely covered by a thick 

 mass of long-threaded wool, light buff yellow tinged with pink when 

 young, golden brown when older, attached only to the slightly project- 

 ing base of the gall; the wool deciduous from older galls. Internally 



