Metipocregyes fruhstorferi ( Breuning, 1959 ) 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 : 509-511

Metipocregyes fruhstorferi ( Breuning, 1959) , comb. nov.

( Figs 9–12 , 33–34 , 47–48 , 68–74 )

Hypocacia fruhstorferi Breuning, 1959: 152 .

Type locality. Tam Dao , Vinh Phu Prov., Vietnam .

Type material examined. Holotype: ♀ (MNHUB, Figs 47–48 ): “ Tonkin / Montes Manson / April, Mai 2 - 3000’ / H. Fruhstorfer ”, “ Hypocacia / Fruhstorferi / mihi Typ/ Breuning dét.”, “ Holotypus / Nr.”, “Zool. Mus. / Berlin”.

Other material examined. [ Vietnam]: 1♀ (CJY), Tam Dao, Vinh Phu Prov., V. 2007, J. Yamasako coll.; 1♂ ( NMNH), Tam Dao National Park, Vinh Phuc Prov. , 21°28.408’N / 105°38.816’E, Alt. 955 m, VI. 2011, Long leg , OTIS Lab PIP Project, H. Nadel & S. Krishnankutty SEL 501, 2017. [ Laos] : 1♂ ( CCH), Phou Pan (Mt.), Ban Saleui , Houa Phan Prov. , 20°12’N / 104°01’E, Alt. 1,500–1,900 m, 23. IV. –15. V. 2008, Holzschuh leg. ; 1♂ ( CCH), same locality and collector, Alt. 1,300–1,900 m, 28. IV. 2010 ; 1♂ (CCH, Figs 9–10 , 33 , 68–74 ), same locality and collector, 1–15. V. 2010 ; 1♀ (CCH, Figs 11–12 , 34 ), same locality and collector, 29. IV. 2011 ; 1♂ ( CCH), same locality and collector, 14. V. 2011 .

Redescription. Male (n = 4, Figs 9–10 , 33 ): LB = 13.0– 14.5 mm, WB = 5.1–5.7 mm.

Body variable from black to dark brown or reddish dark brown, with suberect black hairs on dorsal surface, beneath antennomeres, femora, and tibiae. Head with sparse brown, light brown, and black pubescence of which light brown ones sometimes become lighter and whitish, with pair of indistinct striae of black or dark brown pubescence on frons, which extend to occiput through vertex and widened behind upper eye lobe. Pronotum clothed with brown and light brown pubescence, irregularly scattered with small black spots on disk. Antenna with same sparse pubescence as head or pronotum on antennomere I, with white pubescence on entire part of antennomere II, each basal area of III–VI, and V–XI except for each apex, and the remainders with sparse brown or black pubescence; antennomere IV with tuft of black hairs in apical half. Elytra clothed with black pubescence, scattered with dense small spots of white pubescence throughout, with small spots of brown pubescence on base and along suture, vague markings of same pubescence transversally near middle and apex. Legs with each femur with light brown and black pubescence; each tibia with light brown pubescence on middle and black ones on base and apex; tarsomeres I–II with whitish pubescence and III with black pubescence. Ventral surface clothed with same pubescence as head or pronotum.

Eye nearly subdivided or deeply emarginate; upper and lower lobes connected posteriorly by 1–3 rows of ommatidia, LL/WL = 0.9–1.2, LL/LG = 0.9–1.2. Antenna 1.0–1.2 times as long as body length; relative lengths of each antennomere from I to XI as follows: 1.8–2.0: 0.3–0.4: 1.9–2.0: 1.5–1.6: 0.9: 0.7: 0.6–0.7: 0.5–0.6: 0.5: 0.4–0.5: 0.5. Pronotum LP/WP = 0.8, WP/WEH = 0.6–0.7, with sparse fine umbilicated punctures on disk. Elytra LE/BL = 0.7, LE/WEH = 1.7, LE/LP = 3.0–3.2, evenly and slightly narrowed and rounded apically, with umbilicated punctures on base but the punctures reduced apically and almost disappeared in apical half.

Male genitalia as in Figs 68–74 . Tegmen in dorsal view widest before middle, gently curved in lateral view; paramere ca. 2/5 length of tegmen, thick, hardly narrowed toward rounded apex, with sparse setae mostly in apical 1/3 of latero-dorsal side, several short setae on base of ventral side. Median lobe in dorsal view thick, gently curved in lateral view; basal strut dehiscent from middle of median lobe; apex of ventral plate roundly pointed. Endophallus long, slightly shorter than quadruple length of medial lobe; BPH slightly longer than half-length of median lobe, with pair of CS; MPH with MT+CT long, curved and weakly swollen ventrally near distal 1/4; PB long, swollen together with APH in pyriform shape, with SSp; APH rudimentary, with ED on dorsal side and small AA on distal part; MSp minute, sparsely arranged in proximal 3/4 of MT+CT; LSp distributed in distal 1/4, small, unidentate, small except for dorsal area in which the spicules become large; SSp minute, densely covered dominant area of PB, somewhat sparser in proximal part.

Female (n = 2, Figs 9–12 , 34 ): very similar to male. LB = 12.0–13.0 mm, WB = 4.8–5.1 mm. Antenna 0.9–1.0 times as long as body length; relative lengths of each antennomere from I to XI as follows: 1.9–2.2: 0.3: 2.0–2.3: 1.7–1.8: 0.9–1.0: 0.6: 0.5–0.6: 0.4: 0.4: 0.4: 0.3.

Diagnosis. This species is distinguishable from its congeners by: head and pronotum with brown, light brown and black pubescence; antenna with tuft of black hairs only on antennomere IV; elytra with black pubescence, scattered with dense small spots of white pubescence throughout, with small spots of brown pubescence and vague markings of same pubescence transversally near middle and apex.

Distribution. North Vietnam (Vinh Phu), Northeast Laos (Houa Phan).

Remarks. This species was originally described in the genus Hypocacia Breuning, 1935 . However, it does not fit the definition of the genus due to its lower eye lobes being vertically long [ Hypocacia : lower eye lobe transverse ( Breuning 1935, 1939)]. In addition to this difference, it is also obviously different from the type species of the genus, H. biplagiata Breuning, 1935 , especially in the following features: body robust, much larger; antenna relatively thick; antennomere I gently thickened apically; antennomere III slightly longer than I and IV; elytra projected anteriorly beside scutellum [ H. biplagiata ( Figs 49–52 ): body small; lower eye lobe transverse; antenna fine; antennomere I hardly thickened apically; antennomere III obviously longer than I and IV; elytra hardly projected at each base]. Our study shows it to be congeneric with the members of Metipocregyes in the external and male genital characteristics described above. Therefore, this species is transferred to Metipocregyes herein and Laos represents a new country record for the species.

Figures

FIGURES 9–16. Habitus of Metipocregyes spp. 9–12, M. fruhstorferi comb. nov.; 13–16, M. wenhsini comb. nov. (13–14, holotype; 15–16, paratype); 9–10, 13–14, male; 11–12, 15–16, female; 9, 11, 13, 15, dorsal view; 10, 12, 14, 16, lateral view.

FIGURES 29–36. Head of Metipocregyes spp. in frontal view. 29–30, M. nodieri; 31–32, M. affinis; 33–34, M. fruhstorferi comb. nov.; 35–36, M. wenhsini comb. nov. (35, holotype; 36, paratype); 29, 31, 33, 35, male; 30, 32, 34, 36, female.

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 68–81. Male genitalia of Metipocregyes spp. 68–74, M. fruhstorferi comb. nov.; 75–81, M. wenhsini comb. nov., holotype; 68, 75, tegmen in dorsal view; 69, 76, ditto in lateral view; 70, 77, paramere in ventral view; 71, 78, median lobe in dorsal view; 72, 79, ditto in lateral view; 73, 80, the apex of median lobe in ventral view; 74, 81, median lobe with endophallus in lateral view. Scale: 1.0 mm. For abbreviations, see text.