A NEW OAK-GALL FROM NEW MEXICO

Extract

Dryophanta Porterœ, n. sp.— ♀. Length, 2⅓ mm.; very dark brown; cheeks, tibiæ more or less, tarsi, and antennæ except tips, clear ferruginous; smooth and shining, parapsidal grooves distinct; head transversely quadrate, broader than long; antennæ 13-jointed, 13 a little longer than 11 and 12, 3 about a third longer than 4 (3 about 200 μ, 4 about 150 μ, 13 about 180 μ); scutellum prominent; ovipositor rather long, ferruginous, its apical portion with six rings, conuting the apex as one; wings delicately hairy, marked with blackish, nervures suffused with black, marginal nervure almost but not quite attaining the costa at its distal end; a suffused black cloud beneath the end of the marginal cell, a double one in the apical field, a small and indistinct one beyond the apex of the marginal cell, and a faint cloud on the lower part of the wing.