The galls were sent to the Baron Osten Sacken by D. Cleveland. They are typical of galls of the genus Disholcaspis except that the larval cell is hardly distinct from the surrounding tissue; and the adult is likewise a true Disholcaspis, although the shape of the second segment of the abdomen is similar to that found in the species included in Dryophanta.
Disholcaspis pruniformis, new species
Plate XXVII, Figures 44 and 45
Female.—Generally light reddish brown, black between the anterior parallel lines, on the lateral grooves, and on the transverse groove at the base of the scutellum; antennæ 13-jointed; areolet moderately large. Head: bright reddish brown, darker between the bases of the antennæ and toward the mouth-parts, slightly and finely rugose, with long hairs which are much less dense on the front. Antennæ darker brown, 13-jointed, pubescent. Thorax: mesonotum bright reddish brown, black on and between the anterior parallel lines and on and about the lateral grooves, dark brown in the parapsidal grooves; regularly punctate and dense with a long pubescence; parapsidal grooves wide, deep, and convergent at the scutellum, narrowing and disappearing half-way to the pronotum; anterior parallel lines smooth and extending half-way to the scutellum; lateral lines broad, smooth, and extending a little more than half the length of the mesothorax; scutellum rufous brown, rugose, with a long pubescence, the transverse groove at the base broad, quite deep, black, rugose; metapleuræ densely pubescent; pronotum and mesopleuræ reddish brown, punctate, with a long pubescence, the pronotum black anteriorly. Abdomen: yellowish to reddish to dark brown, lightest laterally, the entire second segment, the seventh segment, and the tip of the hypopygium hairy; the abdomen is large, but the second segment is very small convering only about one-third of the abdomen; segments three to seven are broadly visible and subequal. Legs: reddish brown, including the coxæ, part of each femur and the whole of each tibia darker brown; punctate, pubescent; claws with a large tooth at the base. Wings: clear, microscopically but densely pubescent, the veins dark brown, the subcosta and cross-veins darkest in color; areolet rather large, cubitus extending only two-thirds of the distance to the basal vein; the radial cell broad and widely open, the first abscissa of the radius somewhat suffused with brown and angulate, the angle about 120° and with its apex above the midpoint of the vein. Length: 3.5–4.0 mm.
Galls.—About the size and shape of a small plum (Figs. 44 and 45), yellow to reddish brown. Monothalamous. Somewhat elongate, broadest nearer the apex, more pointed toward the base, about 2.8×2.1 cm., light yellowish brown, broadly tinged with reddish brown, most likely entirely smooth while alive, but the thin skin becoming slightly rough by shrivelling on drying. Internally filled with a compact, not solid mass of yellowish, crystalline, sawdust-like material, only slightly approaching a woody fiber structure around the larval cell which is central in the gall, thick-shelled, and closely imbedded (at least in the dried gall) in the surrounding tissue. Attached on the side of the young twig, at the one-year node, on "post-oak."
Range.—Texas: Tiger Mills, Burnett Co. (Schaupp Coll.).
Cotypes.—Three female and two gall cotypes in the collection of the Museum of Comparative Zoology, and in the author's collection. Number 42 of the Schaupp Collection made in 1884.
