Neuroterus (saltatorius) tumba, new species
agamic

GALL.—An ovoid, naked cell, broadly attached to under surfaces of, and hence only poorly separated from the leaf. Cells averaging 1.5 mm. in length and 1.2 mm. in diameter, thin- but hard-walled, surface rough, the roughening sometimes more or less radiate from apex of gall, without hairs or other covering ; each gall mounted on a slight elevation of under surface, and hence causing a distinct depression of upper surface of leaf. Galls usually abundant on single leaves.

HOST. —Quercus macrophylla [magnoliifolia], the larger-leaved white oak of the area.

RANGE.—Guerrero : Chilpancingo, 6 S, 4000'.

LIFE HISTORY.—Agamic females: March 24.

This is the first insect of the saltatorius complex described from Mexico. The complex has previously been recorded from Eastern, Southwestern, and Pacific areas of the United States. The galls of tumba are most like those of N. (saltatorius) saltarius which Weld described from Indiana, and they are still more like undescribed species from Texas. It is interesting to find Eastern American, instead of the usual Rocky Mountain affinities, in this Southwestern corner of Mexico