Anisandrus auratipilus, Smith & Beaver & Cognato, 2020

Smith, Sarah M., Beaver, Roger A. & Cognato, Anthony I., 2020, A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China, ZooKeys 983, pp. 1-442 : 1

Anisandrus auratipilus sp. nov. Fig. 18G, H, L

Type material.

Holotype, female, China: Fujian, Fuzhou, 18.iii.2018, Y. Li, ex unknown twig (IZAS). Paratypes, female, as holotype (MSUC, 2).

Diagnosis.

2.8 mm long (n = 1); 2.15 × as long as wide. This species is distinguished by the moderately dense mesonotal mycangial tuft that extends laterally from the scutellum to striae 3; declivital posterolateral margin rounded; elytral disc flat; declivital face moderately steep, convex; declivital interstriae 1 unarmed; declivital summit with a small denticle on interstriae 2 and a minute denticle on interstriae 3; interstriae 3 with three denticles on basal 1/2; declivital striae weakly impressed, punctures small, shallow and seriate; interstriae convex, minutely punctate, punctures strongly confused, setose, setae erect hair-like; body shiny, abundantly covered with long erect hair-like setae; elytral disc finely punctate; and pronotal asperities large, coarse, moderately spaced.

Similar species.

Anisandrus apicalis , A. hera , A. klapperichi , A. percristatus , A. venustus , A. xuannu .

Description

(female). 2.8 mm long (n = 1); 2.15 × as long as wide. Body bicolored with pronotal and elytral bases lighter than rest of body. Pronotal and elytral bases brown, remainder of elytra and head dark brown. Legs and antennae light brown. Head: epistoma entire, transverse, with a row of hair-like setae. Frons weakly convex to upper level of eyes, impunctate, median area of with a small ovate smooth, glabrous, strongly shiny area; lateral areas shagreened, weakly rugose, setose, each shallow ruga 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 regularly thick, as long as club. Pedicel as wide as scape, shorter than funicle. Funicle 4-segmented, segment 1 shorter than 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: 0.7 × as long as wide. In dorsal view conical, type 0, sides convex, conical anteriorly; anterior margin with a row of four moderate serrations. In lateral view type 3, short and tall, disc as long as anterior slope, summit at midpoint. Anterior slope with moderately spaced, large, coarse, asperities, becoming lower and more strongly transverse towards summit. Disc subshiny with dense, large, shallow punctures bearing short to moderate, erect hair-like setae, some longer hair-like setae at margins. Lateral margins obliquely costate. Base transverse, posterior angles broadly rounded. Mycangial tuft present along basal margin tuft broad, moderately setose, laterally extending to elytral striae 3. Elytra: 1.6 × as long as wide, 2.26 × as long as pronotum. Scutellum broad, large, linguiform, flush with elytra, flat, shiny. Elytral base transverse, edge oblique, humeral angles rounded, parallel-sided in basal 2/3, then narrowly rounded to apex; surface shiny. Disc flat, striae not impressed, with small, shallow punctures separated by one diameter of a puncture, setose, setae as long as a puncture, semi-recumbent, hair-like; interstriae flat, minutely punctate, punctures strongly confused, setose, setae 1 × width of interstriae 2, erect hair-like, unarmed by granules. Declivity occupying approximately 2/5 of elytra, steeply rounded, declivital face convex; striae weakly impressed, strial punctures somewhat larger and deeper than those of disc, and bearing setae as described for disc; interstriae sparsely minutely uniseriate punctate, setae 1-1.5 × width of interstriae 2, erect, hair-like, interstriae 2 as wide as interstriae 3 at midpoint of declivity, declivital summit with a small denticle on interstriae 2 and a minute denticle on interstriae 3; interstriae 3 with three denticles on basal 1/2. Posterolateral margin rounded, unarmed by granules. Legs: procoxae contiguous; prosternal coxal piece short, inconspicuous. Protibiae obliquely triangular, broadest at apical 1/3; posterior face smooth; apical 1/2 of outer margin with five large socketed denticles, their length longer than basal width. Meso- and metatibiae flattened; outer margins evenly rounded with seven and eight large socketed denticles, respectively.

Etymology.

L. auratus = golden; pilus = hair. In reference to the golden setae covering the elytra. Noun in apposition.

Distribution.

China (Fujian).

Host plants.

Unknown.

Figures

Figure 18. Dorsal, lateral and declivital view of Anisandrus achaete holotype, 3.5 mm (A, B, I), A. apicalis, 3.05 - 3.4 mm (C, D, J), A. auco holotype, 2.9 mm (E, F, K), and A. auratipilus holotype, 2.8 mm (G, H, L).