Lissodema guamense, Blair, 1942

Blair, K. G., 1942, Coleoptera Heteromera From Guam, Insects of Guam I, Honolulu, Hawaii: Bernice P. Bishop Museum, pp. 56-60 : 59-60

Lissodema guamense , new species.

Elongate oblong, convex, black, with front of head, funicle of antennae, legs and underside reddish. Rostrum short, strongly but not closely punctured, frons slightly and evenly convex, punctured as rostrum. Antennae extending to base of thorax, club very distinct, as long as joints 2 to 8 together. Thorax fully as wide as elytra, very convex from side to side, less so from front to base, without depressions or foveae; sides finely margined, each with four teeth, the two anterior closer together than the two posterior, each tooth with a fine erect bristle arising from its upper side; greatest width across second tooth, base finely margined, disk punctured as frons. Elytra subparallel, sedately punctured, the punctures not close, fairly strong near base but very fine from the middle onwards, with scattered erect setae especially towards sides and apex; pygidium exposed. Prothorax beneath more coarsely and closely punctured than above, sides of meso- and metasterna also strongly and closely punctured, middle of metasternum and abdomen finely punctate. First three joints of tarsi (two of posterior) closely compact, with long hairs beneath, the next smaller, the claw-joint about as long as the first three together. Length, 2.5 mm.

Piti, under bark, Nov. 6, Swezey , holotype .

In its parallel-sided form, L. guamense resembles L. luzonica Pie from the Philippine Islands, geographically its nearest congener, but that species is larger, rufous in color and has the thorax impressed at base and the sides multidentate. The numerous Japanese species all have the thorax narrower than the elytra. Type in Bishop Museum collection.