Gastrocentrum regulare sp. nov.

Yang, Ganyan, Yang, Xingke & Shi, Hongliang, 2020, Taxonomy and phylogeny of the genus Gastrocentrum Gorham (Coleoptera, Cleridae, Tillinae), with the description of five new species, ZooKeys 979, pp. 99-132 : 99

publication ID	https://dx.doi.org/10.3897/zookeys.979.53765
publication LSID	lsid:zoobank.org:pub:BC56F2AE-D8F9-411E-9C92-81945738E264
persistent identifier	https://treatment.plazi.org/id/790D18D7-2A83-5AAE-A728-6E6B03488F7E
treatment provided by	ZooKeys by Pensoft
scientific name	Gastrocentrum regulare sp. nov.
status

Treatment

Gastrocentrum regulare sp. nov. Figures 4 View Figures 1–9 , 10C View Figure 10 , 15 View Figure 15 , 16 View Figure 16 , 25 View Figure 25

Holotype.

Malaysia: "Malaysia, Pahang, Cameron Highlands, Tanah Rata vill. env., Gunung Jasar [Mt.]; 1470-1705m, 04°28.4-7'N, 101°21.6-22.1'E, Jiří Hájek leg. 18.iv-10.v.2009 / Holotype: Gastrocentrum regulare sp. nov. Yang & Yang, 2020" (NMPC, male, Fig. 4 View Figures 1–9 ); Paratype. Same data as holotype (NMPC, 1 female).

Diagnosis.

This species is distinct in the genus in having ten regular rows of asetiferous punctations exceeding half of elytra, without AAP between the PAP rows. It can be differentiated from G. xiaodongi by: antennae expanded laterally from 7th antennomere onwards (Fig. 15I View Figure 15 ); elytra punctations rows stop by apical third (Fig. 10C View Figure 10 ); inner surface of elytron with a wedge-shaped protuberance; intercoxal process of first abdominal ventrite grooved longitudinally; spermathecal capsule slenderer, tapering to the tip (Fig. 16A View Figure 16 , sp).

Description.

General appearance: length 12-14 mm, robust, dark brown. Head: including eyes feebly broader than pronotum; eyes moderately large, distance between eyes almost as long as the transverse diameter of eye; gular suture almost straight-up; antennae expanded laterally from 7th antennomere onwards (Fig. 15I View Figure 15 ); vertex and frons roughly punctate, postgenae rugose. Pronotum: oblong, length-width ratio ca. 1.5, constricted posteriorly; surface finely and densely punctate, clothed with long, yellow hairs. Elytra: oblong, sides subparallel, length/width ratio ca. 2.6, vested with grayish white setae; wedge-shaped protuberance present on inner surface; PAP arranged in ten rows, AAP absent; interspace between 2nd-3rdPAP rows ca. 2 × as wide as the punctation diameter; asetiferous punctations decreasing in size postmedially, and completely vanished at apical third (Fig. 10C View Figure 10 ). Legs: outer apex of protibial apex slightly extending obliquely, not forming a distinct tooth. Abdomen: intercoxal process of the first ventrite grooved longitudinally; metacoxal abdominal depressions weekly ridged in anterior margin, perpendicular carinae absent. Male genitalia: pygidium subquadrate, posterior margin rounded (Fig. 15G View Figure 15 ); sixth ventrite arciform, 3 × wider than length, posterior margin rounded, central membranous region oval, extending from anterior margin to posterior margin (Fig. 15H View Figure 15 ); tegmen tubiform, length ratio of phallobasic apodeme to phallobase ca. 1: 2.1 (Fig. 15A-C View Figure 15 ); parameres expanded, unhooked (Fig. 15B, b View Figure 15 ); interphallic plate shorter than half length of phallus (Fig. 15E View Figure 15 ); phallus apex knot-like, rounded (Fig. 15D, E View Figure 15 ). Female reproductive organs: pygidium slightly wider than long, posterior margin rounded (Fig. 16B View Figure 16 ); sixth ventrite trapezoidal, 3 × wider than long, central membranous region broad, apical accessory membranous region absent (Fig. 16C View Figure 16 ); bursa copulatrix clearly defined; spermathecal gland with a top tail of medium length (Fig. 16A View Figure 16 , spg); spermathecal duct slender; spermathecal capsule slender, tapering to the tip, length/width ratio = 3.6 (Fig. 16A View Figure 16 , sp).