Loxaulus pattersoni

Quercus virginiana, geminata
"Root" galls
Slight swelling of small roots containing several closely clustered spherical cells 1 mm in dia. Gall 20 mm long by 4 mm wide or larger. Adults emerged Feb 9. Entered from lit.

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Cells clustered in a slight enlargement of small roots on Q virginiana. Perhaps a synonym of Bassettia floridana above.

Loxaulus pattersoni (Kinseyi)

Compsodryoxenus pattersoni Kinsey
Loxaulus pattersoni Weld

Distribution.--TX

Biology.--Only the unisexual generation is known. It induces root galls on Quercus virginiana.

Compsodryoxenus pattersoni, new species

Gall.--A slight but distinct swelling of small roots. Polythalamous. Galls gradual enlargements from the stems, elongate, averaging 20 mm long by 4 mm wide, often larger, covered with natural or slightly roughened bark. Internally woody, but the tissue irregular, with the larval cells closely clustered, the lining not separable nor hardly distinct, each cell spherical, about 1 mm in diameter. On roots of Quercus virginiana.

Range.--TX

One of the galls is constricted into two parts, the parts bent at an angle; the other galls are straight, undivided; the two types of galls give the same kinds of adults. These galls contained live adults in December; insects emerged on February 9. It is not impossible that adults are mature in the galls over the winter, not emerging until early in the following spring. Similar but much smaller swellings at the bases of petioles had adults emerge on Dec. 27 which appear exactly identical with those from the root galls. Some sort of alternation of generations may be involved here, but it is not unlikely that the species will produce galls on various parts of the plant, not being confined to the roots only.