Neuroterus evanescens, new species

GALL. — Very slight swelling of the stem of the ament, causing an abortion of the whole ament into a short, ovoid mass about 5. mm. long, covered closely with clustered but otherwise normal anthers. The larval cells are tiny cavities in the swollen stem, without distinct linings, covered on the outside by only very thin tissue. On aments of Quercus breviloba.

RANGE.— Texas: Austin (Patterson).

Only two males were obtained among the fourteen adults, but it is not unlikely that the sexes are usually more nearly equal in number. Patterson reports the galls appearing early in March, and the adults beginning to emerge March 15. With such a short life history for this generation, another form must occur in the remainder of the year. A bisexual generation on such an evanescent part of the host usually produces the alternate, agamic generation on some other part of the same host, and Patterson has observed the females ovipositing on the under sides of the leaves. The gall material of the Patterson collection number 68 occurs on Q. stellata ; it shows only a slightly greater degree of swelling of the stems, but when the insects are obtained it may prove a distinct variety confined to the single species of host.

- Alfred Charles Kinsey: (1922) Studies of some new and described Cynipidae (Hymenoptera)^©

Reference: https://www.biodiversitylibrary.org/page/45387508#page/162/mode/1up