92 



Indiana University Studies 



Heteroecus malus, new species 



FEMALE. — Shovv^s the following characters in addition to those 

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

 brownish rufous, darker only in the foveas; parapsidal grooves only 

 moderately wide at the scutellum; median groove distinct for a short 

 distance, indicated more or less prominently for the whole mesonotal 

 length; anterior parallel lines indicated less distinctly and rather wider 

 apart than in hakeri; basal fovese of the scutellum darker, only occa- 

 sionally black, almost as smooth at base as in bakeri; abdomen bright 

 brownish rufous, much brighter than in bakeri; wing veins moderately 

 dark yellow brov/n, about as dark as in bakeri; areolet very small or 

 lacking; second abscissa of the radius distinctly but not strongly angu- 

 late, without a projection, about as in bakeri; length 2.0-2.7 mm., aver- 

 aging smaller than in bakeri. 



GALL. — Ovoid to almost absolutely spherical, 8.-16. mm., in diam- 

 eter, only very slightly drawn into a point for attachment basally, and 

 with a very fine, very short point apically 1.0 mm. or much less in 

 length; entirely smooth and naked, or the surface slightly roughened, 

 light to dark green when fresh, tinged with rose red, upon aging becom- 

 ing brown. Internally more or less solid, with a single larval cell cen- 

 trally, closely embedded, and between the cell and the base only a dis- 

 continuous cavity indicating the usually cylindrical cavity of the species. 

 Singly or in compact clusters of a dozen, more or less, laterally or ter- 

 minally on twigs of Quercus chrysolepis. 



RANGE. — California: Pasadena, San Bernardino. 



TYPES. — 38 females, 21 galls. Holotype female, paratype females, 

 and galls in The American Museum of Natural History; paratype fe- 

 males and galls at Stanford University, the U.S. National Museum, 

 and with the author. Labelled San Bernardino, California; January 31, 

 1920 ; Kinsey collector. 



This variety comes near bakeri, but is distinct enough. The 

 manner of oviposition, many eggs being laid in a restricted 

 area, is distinct from hakeri. Material from the San Ber- 

 nardino Mountains is remarkably uniform in respect to both 

 the insect and the gall. Material from outside the San 

 Bernardinos, that is, from another faunal area, shows some 

 considerable variation, a part of the Pasadena material fully 

 matching that from the San Bernardinos. I cannot decide 

 whether there are other varieties of this species until I can 

 examine more material. It is not impossible that this should 

 be considered a variety of H. chrysolepidis. 



Heteroecus melanoderma, new species 



Andricus dasydactyli (gall only!) Ashmead, 1896, Proc. U.S. Nat. Mus., 

 XIX, p. 118. Dalla Torre and Kieffer, 1902, Gen. Ins. Hymen. 

 Cynip., p. 62; 1910, Das Tierreich, XXIV, pp. 532, 799, 828. Fulla- 



