Metipocregyes holzschuhi, 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 : 514-519

Metipocregyes holzschuhi sp. nov.

( Figs 21–24 , 39–40 , 89–95 )

Type locality. Phou Pan (Mt.), Ban Saleui , Xam Neua Dist., Houa Phan Prov., Laos .

Type series. Holotype: ♂ (CCH, Figs 21–22 , 39 , 89–95 ), “NE · LAOS. Hua Phan prov/ Ban Saleui, Phou Pan ( Mt. )/ – 20°12’N, 10401’E/ 21. IV. 2012, 1300–1900 m / leg. C. Holzschuh ” [printed on white label]. Paratypes : 1♂, 1♀ ( CCH), same locality and collector as the holotype, 23. IV –15. V, 2008 ; 1♂ ( CCH), same locality and collector, 28. IV , 2010; 1♀ ( CCH), same locality and collector, 1–15. V, 2010 ; 1♂ ( CCH), 29. IV , 2011; 1♂ ( CCH), 14. V , 2011; 1♂ ( CCH), same locality and collector, 15. V , 2011; 1♀ ( CCH), same locality and collector, 11. IV , 2012; 1♀ ( CCH), same locality and collector, 17. IV , 2012; 1♀ ( CCH), same locality and collector, 24. IV , 2012; 1♂ ( CTT), same locality, alt. 2,060 m, IV, 2016, ex stc .; 1♀ ( CXG), same locality, IV, 2015, local collector leg .

Description. Male (n = 3, Figs 21–22 , 39 ): LB = 13.0–14.0, WB = 4.7–5.2.

Body black, with suberect black and white hairs on dorsal side, beneath antennomeres, femora, and tibiae. Head mostly clothed with white pubescence, with pair of black striae on frons, which extend to occiput through vertex and widened behind upper eye lobe, and with wide black band on each side behind lower eye lobe. Antenna with white pubescence on part of antennomere I, base of II, and each basal part of III–X except for smooth and glossy area on upper surface of IV–VII (sometimes on IV–X), and the remainders with black pubescence; antennomere III with tuft of black hairs on apical part. Pronotum with same white pubescence as head except for pair of longitudinal wide black vittae on disk, which usually connect each other basally, and with black band on each lateral side. Elytra each mostly clothed with black pubescence, scattered with small spots of white pubescence irregularly concentrated on humerus, behind scutellum along suture, near middle, near apical 1/3, and near apex. Legs with white pubescence on femora and tibiae except for middle and apex of each femur, before middle and apex of each tibia, and claws.

Eye deeply emarginate; upper and lower lobes connected posteriorly by 2–4 rows of ommatidia, LL/WL = 1.2–1.3, LL/LG = 1.1–1.4. Antenna about 1.3–1.4 times as long as body length; relative lengths of each antennomere from I to XI as follows: 1.6–1.7: 0.3: 1.9–2.0: 1.3–1.4: 0.9–1.0: 0.7–0.8: 0.7: 0.6–0.7: 0.6: 0.6: 0.6; antennomeres III and VI slightly dilated inwardly at each apex. Pronotum LP/WP = 0.8, WP/WEH = 0.7, constricted and transversally depressed near base and apex; disk with pair of obtuse indistinct swellings on middle, and sparse umbilicated punctures. Elytra LE/BL = 0.7, LE/WEH = 1.9–2.0, LE/LP = 3.5–3.6, gentry narrowed toward apical 1/4, arcuately narrowed and rounded apically; disk with umbilicated punctures on basal part, which are rough and distinct in basal half but reduced apically, and almost disappeared in apical half.

Male genitalia as in Figs 89–95 . Tegmen in dorsal view widest near middle, gently curved in lateral view; paramere in dorsal view thick, ca. 1/5 length of tegmen, gently and arcuately narrowed toward rounded 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 relatively slender, gently curved in lateral view; basal strut dehiscent from middle of median lobe; apex of ventral plate roundly pointed. Endophallus relatively short, 2.5 times as long as medial lobe; BPH subequal to half-length 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 1/3, small, uni-dentate, small except for dorsal area in which the spicules become obviously large; SSp minute, densely covered dominant area of PB.

Female (n = 2, Figs 23–24 , 40 ): similar to male, but thicker. LB = 14.6–16.0 mm, WB = 5.8–6.3 mm. Antenna 0.9 times as long as body length; 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: 2.2: 0.4: 2.4: 1.3–1.4: 0.7–0.8: 0.6: 0.5–0.6: 0.5: 0.5: 0.4–0.5: 0.4.

Diagnosis. This new species is very different from congeners by the following features: body elongate; elytra covered with black pubescence, scattered with several spots of whitish pubescence. It is superficially similar to Cacia (Ipocregyes) cephaloides Breuning, 1968 and C. (I.) suturevitta Breuning, 1962 from Laos, but easily distinguished from them by having vertically long lower eye lobe and mesosternal process with ridged lateral margins, instead of transverse lower eye lobe and mesosternal process with a tubercle on the center near apex in Cacia Newman, 1842 .

Distribution. Laos (known only from the type locality, Phou Pan). Etymology. The species name is dedicated to the excellent longicornist, Carolus Holzschuh, who kindly provided precious material for this study.

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.