Frischianus subalpinus Frisch, sp. nov.

(Figs 46, 112–114, 205, 256)

Type specimens: Holotype ♂, Indonesia, Jambi, Kerinci: Mt Kerinci, 3000 m, 12.XI.1989, leg. Agosti, Burckhardt & Löbl (MHNG). Paratypes: 2 ♀, same data as holotype (MFNB, MHNG).

Description: Habitus (Fig. 46). Microphthalmous, micropterous without palisade fringe of abdominal tergite VII. Body color unicolored light, reddish medium brown; tip of abdomen, antennae, palps, and legs yellow brown. Labral denticulation type 2 (cf. Figs 11, 12). Forebody surface microsculpture type 2; compared to Figs 2a, 2b cephalic and pronotal punctation finer and more widely spaced, and elytra notably more coarsely punctate with somewhat uneven, almost rugulose surface. Eyes strongly reduced, 0.2 times as long as temples, in longitudinal diameter comprising 4–5 ommatidia. Temples notably widened posterior of eyes. Elytral sutural length 0.7 times as long as pronotal length. Elytra strongly narrowed across rounded humeri and with shallow, transverse depression in anterior half.Metathoracic wings strongly reduced in length and width to very narrow, elongate strip 0.6 times as long as elytral sutural length and 4.7 times longer than wide. Elytral sutural row of punctures not impressed, comprising only about three large punctures in anterior third of elytral sutural length; medial and lateral elytral row of punctures imperceptible in coarse elytral sculpturing. Total body length 4.3–4.9 mm; forebody length 2.1–2.3 mm.

Male: Abdominal sternite VII without diagnostic characters. Abdominal sternite VIII with very narrow, deep, medioposterior incision with lateral margins convex, occupying about 0.4 of sternite length (Fig. 205).

Aedeagus (Figs 112–114) with apical lobe situated dextrally at strongly asymmetrical, subtriangular distal end of aedeagus (Figs 113, 114); apical lobe in lateral view elongate, strongly curved ventrad, ventrally extended in strong, proximad pointing tooth, and with short, blunt, somewhat distad curved tip (Fig. 112). Endophallus in ventral and dorsal view situated submedially in aedeagus (Figs 113, 114). Endophallic sclerite relatively small, elongate, in lateral view dentiform with sharp apical end (Fig. 112), in ventral view about half as wide as aedeagus, oval, with convex lateral margins evenly narrowed toward round apical end (Fig. 113). Dorsal endophallic spine slender with narrow base, feebly curved dextrad, slightly narrowed medially and with acute end (Figs 112–114), in dorsal view strongly protruding from ostium (Fig. 114), but only slightly projecting dorsally in lateral view (Fig. 112). Dorsal, midlongitudinal split of phallobase type B (cf. Fig. 39). Aedeagus with ventral margin between postforamen and apical lobe feebly inverted S-shaped (Fig. 112), in dorsal view long oval with subparallel lateral margins and slightly curved dextrad at midlength (Fig. 114). Length of aedeagus 0.69 mm.

Female: Gonocoxal plate about 1.4 times as long as wide (measured at greatest width across feebly concave, transverse basal ridge excluding acute, lateroanterior ends), without subbasal ridge, with subparallel, concave lateral margins, and almost semicircularly emarginate posterior margin (Fig. 256).

Distribution: Frischianus subalpinus is known only from the type locality in the subalpine zone of Mt Kerinci, Indonesia’s highest mountain on Sumatra, and in view of its flightlessness probably endemic there.

Etymology: The epithet subalpinus (adjective, Latin: subalpine) refers to the subalpine altitude where Frischianus subalpinus was found on Mount Kerinci.