Anisandrus sinivali, 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 sinivali sp. nov. Fig. 23G, H, L

Type material.

Holotype, female, India: Bengal [West Bengal], Kalimpong, Samsingh, 7.x.1933, C.F.C. Beeson (NMNH).

Diagnosis.

3.9 mm long (n = 1); 2.29 × as long as wide. This species is distinguished by the mesonotal mycangial tuft the length of the scutellum; elytral disc with a weak transverse saddle-like depression; declivity posterolateral margins rounded; elytral surface opalescent; declivital interstriae 2 armed with a blunt tubercle at summit, interstriae 3 armed by one or two denticles near declivital summit ventrad to tubercle on interstriae 2; declivital face convex, evenly rounded toward apex; and pronotal disc feebly asperate.

Similar species.

Anisandrus apicalis , A. congruens , A. cristatus , A. geminatus , A. niger .

Description

(female). 3.9 mm long (n = 1); 2.29 × as long as wide. Body 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, finely reticulate, sparsely finely punctate; punctures 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, longer than club. Pedicel as wide as scape, shorter than funicle. Funicle 4-segmented, segment 1 longer 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: 0.86 × as long as wide. In dorsal view rounded, type 1, sides convex, rounded anteriorly; anterior margin with a row of five large serrations. In lateral view type 3, short and tall, disc as long as anterior slope, summit at midpoint. Anterior slope with densely spaced, large coarse asperities, becoming lower and more strongly transverse towards summit. Disc subshiny, impunctate, feebly asperate, basal and lateral areas densely finely punctate, each puncture bearing 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 densely setose, approximately the width of scutellum. Elytra: 1.06 × as long as wide, 1.24 × 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 1/2, then broadly rounded to apex; surface opalescent. Disc with a weak medial transverse saddle-like depression, striae not impressed, with small, shallow punctures separated by less than one diameter of a puncture, setose, setae as long as two punctures, recumbent, hair-like; interstriae flat, punctate, punctures strongly confused, setose, setae 2-3 × width of interstriae 2, erect hair-like, unarmed by granules. Declivity occupying approximately 1/2 elytra, evenly rounded, declivital face convex; striae weakly impressed, strial punctures somewhat larger and deeper than those of disc; interstriae sparsely uniseriate punctate, setae 2-4 × width of interstriae 2, erect, hair-like, interstriae 2 narrower than interstriae 3 at midpoint of declivity, declivital interstriae 2 armed with a blunt tubercle at summit, interstriae 3 armed by one or two denticles near declivital summit ventrad to tubercle on interstriae 2. Posterolateral margin rounded, unarmed by granules. Legs: procoxae contiguous. Protibiae obliquely triangular, broadest at apical 1/3; posterior face smooth; apical 1/2 of outer margin with seven very large socketed denticles, their length much longer than basal width. Meso- and metatibiae flattened; outer margins evenly rounded with at least five and seven large socketed denticles, respectively.

Etymology.

Hindu mythology, Sinivali - goddess of fecundity. Pronunciation - Sinivālī. Noun in apposition.

Distribution.

India (West Bengal).

Host plants.

Unknown.

Remarks.

The holotype is card mounted obscuring ventral characters, including mesotibial denticles.

Figures

Figure 23. Dorsal, lateral and declivital view of Anisandrus niger, 5.8 - 5.9 mm (A, B, I), A. paragogus holotype, 2.8 mm (C, D, J), A. percristatus, 5.5 mm (E, F, K), and A. sinivali holotype, 3.9 mm (G, H, L).