Andersonaltica valens Linzmeier & Konstantinov, new species

(Figs 38–42, Map 1)

Description. Body (Figs 38, 39) length 1.82 mm, width 1.12 mm. General body color dark chestnut brown. Dorsal part of head and pronotum entirely dark chestnut brown. Mouth parts, procoxae, last abdominal ventrite, and basal calli on elytra lighter. Pronotum slightly darker. Elytral hairs yellowish gold to brown, lighter hairs forming two or three narrow, poorly defined bands and patches.

Head (Fig. 40) with vertex with slightly zigzagged longitudinal ridge above antennal calli. Frontal ridge acute ventrally, followed by narrow longitudinal ridge beyond anterofrontal ridge into middle of clypeus. Anterofrontal ridge well developed laterally. Head surface densely covered with relatively long, well visible setae (Fig. 40).

Pronotum (Fig. 42) 1.36 times wider than long, abruptly constricted near its base. In lateral view apical part more convex than basal. Lateral margin slightly convex. Anterolateral pore present. Two elongate elevations on pronotum tall. Pronotal punctures large, spaced evenly, distance between them much smaller than diameter of puncture. Elytral punctures placed close together into striae, interspaces convex. Space between scutellar row and first row of punctures less convex than space between first and second rows. Basal calli well developed, projecting. Metatibia without preapical tooth situated before tarsal insertion.

Median lobe of aedeagus nearly parallel-sided ventrally, with apex narrowing gradually and with ventral groove widening abruptly towards apex. In lateral view, median lobe slightly curved with base and apex bent evenly (Fig. 41).

Female unknown.

Type material. Holotype, 3. Labels: 1) MEXICO: Chiapas, Lagos/ de Montebello, Cinco Lagos/ 1500m, 22.IX.1992, 92-113/ R.S.Anderson, liquidambar/ oak/pine forest litter; 2) Andersonaltica valens des. Linzmeier & Konstantinov 2011 (CMNC).

Etymology. The specific name, derived from the Latin valens, meaning strong, vigorous, refers to strong sculpture on the elytra.

Remarks. Andersonaltica valens is more similar to A. tuberosa than to other species of the genus. It can be separated from A. tuberosa by the following characters: pronotum near its base abruptly constricted; space between scutellar row and first row of punctures less convex than space between first and second rows; median lobe of aedeagus with ventral groove widening abruptly towards apex.