Pachypsylla laevovesicula n. sp. (laevigata regular blister gallmaker)

Gall: Like that of P. celtidlsvesicula [Flat, inconspicuous; cell circular, 1 to 2 mm in diameter; slightly elevated above with a slight central protuberance; below also slightly projecting with a definite small central nipple] but larger, cells about 2 mm in diameter at the time of gallmaker emergence.

Hosts and distribution: This species appears to be essentially restricted to C. laevigata and in Central Texas was found only on trees that could be readily identified as this host. However, in northwestern Oklahoma it was found on trees having features tending toward C. reticulata and C. occidentalis.

In Central Texas P. laevovesicula was found to be second in abundance only to P. celtidisasterisca among the blade pachypsyllids of C. laevigata and in some environments it was found to be the most numerous one.

new sp. 1 Riemann 1961

Celtis laevigata

Regular blister gall without upper central spine

Texas