Anisandrus simplex Smith, Beaver & Cognato, 2022

Smith, Sarah M., Beaver, Roger A., Pham, Thai Hong & Cognato, Anthony I., 2022, New species and new records of Xyleborini from the Oriental region, Japan and Papua New Guinea (Coleoptera: Curculionidae: Scolytinae), Zootaxa 5209 (1), pp. 1-33 : 3-5

Anisandrus simplex Smith, Beaver & Cognato sp. nov.

( Figs 5–8 )

http://zoobank.org/ urn:lsid:zoobank.org:act:9DDB74AA-4C67-47E9-A190-34B555962B28

Type material. Holotype, female: NEPAL, Ghanpokhara , 5,500–7,000ft, 2.v.1954, J. Quinlan, NHMUK014591805 (NHMUK).

Diagnosis. This species can be distinguished by the mesonotal mycangial tuft the length of the scutellum; elytral disc flat; declivital interstriae punctate; posterolateral margin feebly carinate to interstriae 5; declivity feebly bisulcate, margins ornamented by a minute tubercle at the base of interstriae 2 and three minute tubercles on the basal quarter of interstriae 3; and declivital interstriae bearing fine erect hair-like setae.

Similar species. Anisandrus feronia Smith, Beaver & Cognato, 2020a , A. mussooriensis ( Eggers, 1930)

Description (female). 3.25 mm long (n = 1); 2.41 × as long as wide. Body bicolored: pronotum red, elytra dark brown, legs and antennae yellow-brown. Head: epistoma entire, transverse, with a row of hair-like setae. Frons weakly convex to upper level of eyes, alutaceous, subshiny, punctate; punctures small, shallow, setose; punctures each bearing a long, erect hair-like seta. Eyes shallowly emarginate just above antennal insertion, upper part smaller than lower part. Submentum large, distinctly triangular, slightly impressed. Antennal scape long and slender, as long as club. Pedicel as wide as scape, shorter than funicle. Funicle 4-segmented, segment 1 as long as pedicel. Club longer than wide, obliquely truncate, type 1; segment 1 corneous, encircling anterior face; segment 2 narrow, concave, corneous on anterior face only; sutures absent on posterior face. Pronotum 0.96 × as long as wide. In dorsal view rounded, type 1, sides convex, rounded anteriorly; anterior margin with a row of five serrations. In lateral view short and tall, type 3, disc shorter than anterior slope, summit at basal 2/5. Anterior slope with densely spaced, large coarse asperities, becoming lower and more strongly transverse towards summit. Disc subshiny with dense, fine punctures bearing moderate, semi-erect hair-like setae, some longer hair-like setae at margins. Lateral margins obliquely costate. Base transverse, posterior angles acutely rounded. Mycangial tuft present along basal margin, tuft moderately setose, approximately the width of scutellum. Scutellum broad, large, linguiform, flush with elytra, flat, shiny. Elytra: 1.44 × as long as wide, 1.50 × as long as pronotum. Base transverse, edge oblique, humeral angles rounded, parallel-sided in basal 3/4, then narrowly rounded to apex; surface opalescent. Disc weakly convex, striae not impressed, with small, deep subcontiguous punctures, setose, setae as long as two punctures, recumbent, hair-like; interstriae flat, unarmed by granules, punctate, punctures strongly confused, setose, setae 1– 1.5 × width of interstriae 2, erect hair-like. Declivity occupying ~3/8 elytra, steeply rounded, declivital face feebly bisulcate, interstriae 1 and 3 convex, depressed between striae 1 and 2; striae not impressed, strial punctures much larger and deeper than those of disc, and bearing setae as described for disc; interstriae minutely uniseriate punctate, setae 1–2 × width of interstriae 2, erect, hair-like, interstriae 2 about as wide as interstriae 3 at midpoint of declivity, declivital margins ornamented by a minute tubercle at the base of interstriae 2 and three minute tubercles on the basal quarter of interstriae 3. Posterolateral margin carinate to interstriae 5. Legs: procoxae contiguous. Protibiae obliquely triangular, broadest at apical 1/3; posterior face smooth; apical 1/2 of outer margin with six very large socketed denticles, their length much longer than basal width. Meso- and metatibiae flattened; outer margins evenly rounded with nine very large socketed denticles, respectively.

Distribution. Nepal.

Host plants. Unknown.

Etymology. L. simplex = simple. In reference to the unadorned elytral declivity, which is atypical for Anisandrus .

An invariable adjective.

Figures

FIGURES 1‒8. Lateral, dorsal, posterior oblique and anterior view of Anisandrus proscissus holotype, 3.55 mm (1–4), Anisandrus simplex holotype, 3.25 mm (5–8).