Metipocregyes variabilis, Yamasako & Lin, 2018

Yamasako, Junsuke & Lin, Mei-Ying, 2018, Review of the genus Metipocregyes Breuning, 1939 with two new combinations and three new species (Coleoptera, Cerambycidae, Lamiinae, Mesosini), Zootaxa 4532 (4), pp. 503-522 : 519-520

Metipocregyes variabilis sp. nov.

( Figs 25–28 , 41–42 , 96–102 )

Type locality. Diaoluoshan , Lingshui County, Hainan Island, China .

Type series. Holotype: ♂ (IZAS, Figs 25–26 , 41 , 96–102 ), “ 海南陵水县吊罗山 (Hainan, Lingshui County, Diaoluoshan) / 海拔 (Alt.) 921m / 史洪亮 刘晔 (Hong-Liang Shi & Ye Liu) / 中国科学院动物所 ( Institute of Zoology , Chinese Academy of Sciences )”, “N18.72510, / E109.86861 / 2012. IV.17 / 中 国科学院 动物所 ”, “IOZ(E)1905196” . Paratype: 1♀ (OMNH, Figs 27–28 , 42 ), Laoshan, Dayao-shan, Alt. 800–1,200 m, 24°07’N / 100°01’E, Guangxi Prov., China, V, 1996, Wako coll. (Native leg.) .

Description. Male (n = 1, Figs 25–26 , 41 ): LB = 13.8 mm, WB = 5.4 mm.

Body black, with suberect black and white hairs on dorsal side, beneath antennomeres, femora, and tibiae. Head with whitish pubescence which partly varies from white to pinkish except for pair of narrow longitudinal black vittae extended from frons via vertex to occiput. Antenna with sparse whitish pubescence beneath antennomere I, with same pubescence on base of II, each basal part of III–X except for smooth and glossy area on upper surface of IV–VII, and the remainders with black pubescence; antennomeres III–IV with tuft of black hairs on each apical half of inner side. Pronotum with same whitish pubescence as head except for pair of narrow longitudinal black vittae on disk and indistinct transverse black band on each lateral side. Elytra irregularly scattered with small spots of same whitish pubescence as head and pronotum throughout, with narrow indistinct zigzag black bands on basal 1/4, behind middle, and near apices. Legs with pro- and mesofemora with whitish pubescence except each apex; metafemur with same pubescence except middle and apex which are covered black pubescence; each tibia annularly with whitish pubescence middle and apex.

Eye deeply emarginate; upper and lower lobes connected posteriorly by 2–3 rows of ommatidia, LL/WL = 1.2, LL/LG = 1.2. Antenna 1.3 times as long as body length; relative lengths of each antennomere from I to XI as follows: 1.7: 0.3: 2.0: 1.4: 1.0: 0.8: 0.7: 0.6: 0.6: 0.5: 0.6; antennomeres III and VI slightly thickened at each apex. Pronotum LP/WP = 0.8, WP/WEH = 0.7, weakly constricted at base, transversally depressed near base and apex, with pair of obtuse indistinct swellings and sparse granules on disk. Elytra LE/BL = 0.7, LE/WEH = 1.8, LE/ LP = 3.5, evenly narrowed from subquadrately projected humeri toward apical 1/5, arcuately narrowed and rounded apically; disk with sparse granules on basal part, irregularly with punctures which are rough and distinct in basal half but reduced apically.

Male genitalia as in Figs 96–102 . Tegmen in dorsal view widest near middle, gently curved in lateral view; paramere in dorsal view thick, ca. 1/5 length of tegmen, delated laterally at base of ventral side, gently narrowed toward subquadrate apex, with setae arising from latero-dorsal side and concentrated apically; ringed part in dorsal view gently expanded laterally near middle of tegmen, thence gently narrowed basally. Median lobe in dorsal view thick, gently curved in lateral view; basal strut dehiscent before middle of median lobe; apex of ventral plate roundly pointed. Endophallus relatively short, ca. 2.5 times as long as medial lobe; BPH slightly longer than halflength of median lobe, with pair of CS; MPH with MT+CT cylindrical in proximal half, well swollen ventrally in distal half, and curved near distal 1/4, with MSp and LSp; PB swollen together with APH in elongate and slender clavate shape, with SSp; APH rudimentary, with ED on distal part; MSp minute, sparsely arranged in proximal 2/3 of MT+CT; LSp distributed in distal half of MT+CT, unidentate, small except for dorsal area in which the spicules become obviously large; SSp minute, densely covered dominant area of PB.

Female (n = 1, Figs. 27–28 , 42 ): LB = 15.6 mm, WB = 6.1 mm. Similar to male, but body somewhat thicker. Antenna 0.9 times as long as body length, with tuft of black hairs only on antennomere III; antennomeres IV–VI with smooth and glossy area on upper surface of each base; relative lengths of each antennomere from I to XI as follows: 2.3: 0.4: 2.3: 1.4: 0.7: 0.6: 0.6: 0.4: 0.4: 0.4: 0.4.

Diagnosis. This species is similar to M. holzschuhi sp. nov., but is distinguished from the latter by: body with partly pinkish pubescence; pronotum with pair of longitudinal black vittae which are hardly connected each other; elytra irregularly with whitish and pinkish pubescence throughout.

Distribution. China (Guangxi, Hainan).

Etymology. The species name reflects its variable color of pubescence on the body surface.

Figures

FIGURES 21–28. Habitus of Metipocregyes spp. 21–24, M. holzschuhi sp. nov.; 25–28, M. variabilis sp. nov.; 21–22, 25–26, male, holotype; 23–24, 27–28, female, paratype; 21, 23, 25, 27, dorsal view; 22, 24, 26, 28, lateral view.

FIGURES 37–42. Head of Metipocregyes spp. in frontal view. 37–38, M. brunneatus sp. nov.; 39–40, M. holzschuhi sp. nov.; 41–42, M. variabilis sp. nov.; 37, 39, 41, male, holotype; 38, 40, 42, female, paratype.

FIGURES 89–102. Male genitalia of Metipocregyes spp. 89–95, M. holzschuhi sp. nov., holotype; 96–102, M. variabilis sp., holotype; 89, 96, tegmen in dorsal view; 90, 97, ditto in lateral view; 91, 98, paramere in ventral view; 92, 99, median lobe in dorsal view; 93, 100, ditto in lateral view; 94, 101, the apex of median lobe in ventral view; 95, 102, median lobe with endophallus in lateral view. Scale: 1.0 mm. For abbreviations, see text.