Metipocregyes affinis Breuning, 1968

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 : 507-509

Metipocregyes affinis Breuning, 1968

(Figs 5–8, 31–32, 45–46, 61–67)

Metipocregyes affinis Breuning, 1968: 7 .

Type locality. Phou Khao Khoay (Mt.), Vientiane Prov., Laos

Type material examined. Holotype: ♀ (BPBM, Figs 45–46 ), “ LAOS: / Vientiane Prov. / Phou Kou Khouei / 20.VI.1965 ”, “ J. A. Rondon / Collection / BISHOP Mus.”, “ Metipocregyes / affinis mihi / Breuning dét. Typ ”, “metipocregyes / affinis n. sp. Breun / Coll. J. A. Rondon Laos ”.

Specimens examined. [ Laos]: 1♀ (CJY), Ban Saleui, Xam Neua Dist., Houa Phan Prov., Alt. ca 1,000 m, 3. V, 2002, N. Ohbayashi leg.; 1♀ (CJY, Figs 7–8, 32), same locality and collector, Alt. ca 1,400 m, 5. V, 2002 ; 1♀ ( CJY), same data ; 1♂ (CTN, Figs 5–6, 31, 61–67), Phou Pan ( Mt. ), Houa Phan Prov. , Alt. 1,500–1,800 m, 20˚11’N/104˚01’E, 5. V, 2004, T. Tsuru leg. ; 1♂ ( CTN), same locality, 25. V, 2004, T. CTN .; 20♀♀ ( CJY), Phou Samsoum (Mt.), Xieng Khouang Prov. , IV–VI, 2006, H. Wakahara coll. [ Thailand]: 1♀ ( CCH), Doi Pui, Chiang Mai Prov. , 25. V, 1985, Native collector ; 1♂ ( CST), Doi Pui, Chiang Mai Prov. , 18–22. V, 1987, T. Hirasawa leg. ; 1♂ ( FFPRI), Maetaeng, Chiang Mai Prov. , 6. V, 1993 .

Redescription. Male (n = 10, Figs 5–6, 31): LB = 10.1–12.6 mm, WB= 3.9–4.8 mm.

Body color variable from black to reddish dark brown, sparsely with long suberect black hairs on dorsal surface, beneath antennomeres, femora, and tibiae. Head, pronotum, and elytra irregularly with small spots of whitish pubescence which are variable from grayish to yellowish creamy white. Antenna with antennomeres I–V with white pubescence except for apical part of antennomeres I and III–V which are covered with black or brown pubescence; antennomeres VI–XI usually with white pubescence, but sometimes with black or brown pubescence entirely or apically. Ventral surface and legs with same whitish pubescence as dorsal ones, partly with black or brown pubescence, sparsely with white hairs.

Eye subdivided into upper and lower lobes which are connected posteriorly by narrow line with or without row of ommatidia, LL/WL = 1.1–1.3, LL/LG = 1.1–1.3. Antenna 1.3–1.4 times as long as body length; relative lengths of each antennomere from I to XI as follows: 1.4–1.5: 0.2–0.3: 1.8–1.9: 1.4–1.5: 1.0–1.1: 0.8–0.9: 0.7–0.8: 0.6–0.7: 0.6: 0.5–0.6: 0.5. Pronotum LP/WP = 0.6–0.7, WP/WEH = 0.7–0.8, constricted and transversally depressed near base and apex, with pair of obtuse indistinct swellings on middle of disk. Elytra LE/LB = 0.7, LE/ WEH = 1.8–1.9, LE/LP = 3.3–4.0, almost parallel-sided in basal 3/4, arcuately narrowed and rounded apically; disk with several granules on base, irregularly with fine punctures which are rough and distinct in basal half and reduced apically.

Male genitalia as in Figs 61–67 . Tegmen in dorsal view widest behind middle, gently curved in lateral view; paramere in dorsal view thick, ca. 1/4 length of tegmen, gently and evenly narrowed toward rounded apex, with setae arising from apical half on latero-dorsal side and concentrated in apical area, and with short setae on base of ventral side; ringed part in dorsal view expanded laterally behind middle of tegmen, thence gently narrowed basally. Median lobe in dorsal view thick, gently curved in lateral view; apex of ventral plate roundly pointed; basal strut dehiscent near middle of median lobe. Endophallus almost 3.5 times as long as median lobe; BPH subequal to half-length of median lobe, with pair of CS; MPH with MT+CT curved near distal 1/3, with MSp and LSp; PB cylindrical in proximal 2/3, roundly swollen together with APH in distal 1/3, with SSp; APH short, with rudimentary AA on dorsal side and ED on AA; MSp minute, sparsely arranged in proximal 2/3 of MT+CT; LSp small, unidentate, evenly and densely distributed in distal 1/3 of MT+CT; SSp minute, densely covered dominant area of PB, somewhat sparser in proximal part.

Female (n = 10, Figs 7–8, 32): similar to male but body thicker. LB = 12.4–16.0 mm, WB = 4.6–6.1 mm. Antenna 0.9–1.0 times as long as body length; relative lengths of each antennomere from I to XI as follows: 1.9– 2.0: 0.3–0.4: 2.3–2.5: 1.5–1.6: 0.9–1.0: 0.6–0.7: 0.5: 0.4–0.5: 0.3–0.4: 0.3: 0.3.

Diagnosis. This species is similar to M. nodieri , but distinguishable from the latter by: elytra more elongate, scattered with small spots of whitish pubescence throughout.

Distribution. Laos (Vientiane, Xieng Khouang, and Houa Phan), North Thailand (Chiang Mai).

Remarks. This is the first record from Thailand.

Figures

FIGURES 43–52. Type specimens of Metipocregyes and Hypocacia spp. 43–44, Syntype of Mesosa nodieri Pic, 1933 [= Metipocregyes nodieri (Pic, 1933)]; 45–46, holotype of Metipocregyes affinis Breuning, 1968; 47–48, holotype of Hypocacia fruhstorferi Breuning, 1959 [= Metipocregyes fruhstorferi (Breuning), comb. nov.]; 49–52, holotype of Hypocacia biplagiata Breuning, 1935 (SMF, “Eddakara / Malabar”); 43, 45, 47, 49, dorsal view; 44, 46, 48, 52, labels; 50, lateral view; 51, frontal view.

FIGURES 53–67. Male genitalia of Metipocregyes spp. 53–60, M. nodieri; 61–67, M. affinis; 53, 61, tegmen in dorsal view; 54, 62, ditto in lateral view; 55, 63, paramere in ventral view; 56, 64, median lobe in dorsal view; 57, 65, ditto in lateral view; 58, 66, the apex of median lobe in ventral view; 60, 67, median lobe with endophallus in lateral view. Scale: 1.0 mm. For abbreviations, see text.