Lacvietina sp. A

HERMAN, LEE H., 2004, Revision of the Asian Tribe Megarthropsini (Coleoptera: Staphylinidae: Tachyporinae), American Museum Novitates 3430, pp. 1-72 : 53-54

Lacvietina sp. A

A sixth species was examined that differs from the preceding five. It is represented by only one female and so is not named because it is often impossible to identify the females or to associate them with males by means other than collecting site. The species is distinguished from all the others in the genus by the absence of medial pronotal punctation. Tergum VIII (of female) has five apical lobes, as do L. aurora and L. copiosa .

DESCRIPTION: Female. Length 4.0 mm; width 1.5 mm. Color reddish brown. Head nearly black and darker than remainder of body. Pronotum with pale reddish brown lateral and basal margins.

Head with a few scattered fine punctures and with scattered punctulation; surface polished. Antenna reaching nearly to posterior margin of elytra.

Pronotum with coarse, moderately dense punctation on lateral third and along basal third; median third and anterior margin with scattered punctulation and fine punctures and surface strongly shining to polished.

Elytra with posterolateral angle not produced; epipleuron with one row of punctures adjacent to ventral edge.

Tergum VIII with five apical lobes.

DISCUSSION: In the key to species for Lacvietina , this species will run to couplet 7, where it can be separated from both L. aurora and L. copiosa by the impunctate median third of the pronotum.

Although the posterolateral elytral margin is rounded, not emarginate as is the case for others of the Megarthropsini , the lateral margin of the head is reflexed from above the antennal insertion anteriorly, the postocular ridge is modestly developed, the neck is present, and the cephalic, pronotal, and ely­

tral punctation is coarse. The species is included in Lacvietina because of the presence of the intermesocoxal metasternal pit.

DISTRIBUTION: Indonesia: N. Sumatra, Kotacane , Gn. Sinabung, 2000 m, 7–8.X.1990, leg. A. Riedel (1 female, MSC) .

MATERIAL EXAMINED: One female.