Lispinus impressicollis guamensis, Bernhauer, M., 1942

Bernhauer, Max, 1942, Coleoptera, Staphylinidae Of Guam, Insects of Guam I, Bernice P. Bishop Museum, pp. 41-44 : 41

1. Lispinus impressicollis guamensis , new subspecies.

Pitchy, a little shining, antennae, palpi and legs rusty yellow. Head narrower than prothorax, in front with fairly strong impressions, shining smooth, without puncturation. Antennae fairly short, the penultimate segment in widest view about half wider than long. Thorax somewhat narrower than the elytra, about one third broader than long, rather flat, before middle strongly widened, sinuate, more so posteriorly than anteriorly, each side of middle with a flat longitudinal impression laterally deeper, with very fine and sparse puncturation which is stronger and denser in the impression, moderately shining. Elytra about a third longer than prothorax, considerably longer than wide, with edges para!lel, finely, distinctly but sparsely punctured, indistinctly shagreened. Abdomen laterally fairly strongly shagreened, along the middle more feebly shagreened, laterally with a few large punctures. Length, 2.5 mm.

Agat , May 31, under bark, Usinger; Yigo , Oct. 18, ex dead small-leaved Ficus , Swezey.

Though agreeing with the species in its longer, narrower size, the new subspecies differs in its much finer and sparser puncturation, much weaker tJ1oracic impressions and longer elytra. When more material is obtained, it may prove to be a distinct species.