Andricus tecturnarum, new species
Plate XXV, Figures 30 to 33
Female.—Mostly bright rufous, the tips of the antennæ and the posterior edge of the abdomen darker; hairy; foveæ at the base of the scutellum distinct, deep, smooth. Head: deep rufous, the mouth-parts only slightly darker; finely coriaceous, and hairy; antennæ 13-jointed (less often 14-jointed), rufous, hairy, the last one or two joints dark brownish. Thorax: entirely bright rufous, coriaceous, hairy; parapsidal grooves distinct, not very convergent at the scutellum, extending to the pronotum; anterior parallel lines rather smooth but not very distinct, extending half-way to the scutellum; median groove practically lacking but with a trace of a slightly differently colored median line; lateral lines distinct, rather broad, smooth, extending well forward; scutellum rugose, hairy, with the two foveæ at the base deep, smooth, divergent, almost at right angles, separated by only a narrow ridge; pronotum finely rugoso-punctate; mesopleuræ shining but very finely aciculate. Abdomen: shining rufous, darker posteriorly and dorsally, with a few hairs at the sides of the second segment and on the hypopygium; the second segment somewhat tongue-shaped, produced dorsally to cover two-thirds of the abdomen. Legs: rufous, hairy, only the very tips of the tarsi dark; tarsal claws toothed. Wings: veins brown, the second abscissa of the radius and the cubitus finer and lighter, with something of a cloud on the first abscissa of the radius; areolet not large; cubitus not quite reaching the basal vein; radial area open; first abscissa of the radius angulate. Length: 2 mm. or slightly ess.
Galls.—Buff or reddish brown, woolly masses (Figs. 30 to 33) containing scores of closely clustered, hollow, urn-shaped galls. Each gall is monothalamous, about 10 mm. long by 3 mm. in diameter, consisting of a tube, which is rather conical, but compressed by contact with the other galls, thin-walled, crystalline, the upper half hollow and open at the end, a partition separating this space from a cavity which occupies the lower half of the gall and in which the larva lives. Each gall bears straw-colored to buff or reddish brown, crystalline hairs which are most dense near the summit, and which make of the cluster a single, oval mass often 35 × 25 mm. in size. The galls are all attached to the midribs, on the under surfaces of leaves of a species of Quercus.
Range.—Mexico: San Luis, Potosi (Palmer Coll.).
Cotypes.—Eight female cotypes and three clusters of galls, in the collections of The American Museum of Natural History, the Museum of Comparative Zoology, and in the author's collection. The galls were collected in September 1878 by Dr. Edward Palmer; some of the cotype adults were bred then from the galls, and others I cut out of the galls.
The individual galls are not unlike those of Andricus crystallinus or Callirhytis tubicula in structure, but they are entirely different in details of form and in being clustered in the large, woolly masses.
Disholcaspis fungiformis, new species
Plate XXVI, Figures 37 to 39
Female.—Antennæ 13-jointed, head and thorax bright reddish brown, black on the area between the anterior parallel lines, on the lateral lines, and in the foveal groove of the scutellum; abdomen dark rufous-brown. Head: bright reddish brown,
