Anaches, Pascoe, 1865

Lin, Mei-Ying & Weigel, Andreas, 2022, A study on the genus Anaches Pascoe, 1865 (Coleoptera, Cerambycidae, Lamiinae Pteropliini), with a new species and two new synonyms, Zootaxa 5133 (1), pp. 123-132 : 124-126

Anaches m-signatus Lin & Weigel sp. nov.

( Figs. 1–3 , 9 , 12–13 )

Description. Male ( Figs. 1–2 ). Length 9.9–12.0 mm, width 3.0–3.6 mm. Body more than 3 times as long as wide; integument black brown to black; surface of head, pronotum, elytra, femora and ventral surface densely covered with short recumbent pubescence, mostly brown or greyish white. Scape with fine recumbent short brown or white pubescence, all antennomeres provided with long brown setae sparsely at ventral side, and sparser toward apical segments. Antennomeres III to XI provided with a whitish basal ring. Occiput, pronotum, basal third and apical fourth of elytra mostly brownish, with some blackish and whitish spots. Elytra with a distinct whitish transverse band near middle, narrowed towards elytral suture, with grayish parts in middle. The anterior margins of the whitish bands on two elytra together form “V”-shaped ( Figs. 1a, 2a, 3a ). The posterior margin of the whitish band on each elytron forms “m”-shaped ( Fig. 3a ). Legs with femora and tibiae mostly clothed with grayish pubescence with many black spots; dorsum of tarsal segments densely clothed with fine recumbent black brown or whitish pubescence. Ventral surface of thorax similar to pronotum, metasternum with more grayish pubescence, similar to ventral side of femora. Abdominal sternites ( Fig. 1c ) mostly clothed with grayish to brownish pubescence except the apical margin of sternite III and the sexual setal patches on sternite IV covered with golden brown long sexual setae ( Figs. 1c , 9a, 9b ).

Head slightly narrower than pronotum. Labrum trapezoidal with rounded angles, covered with golden yellow setae at margin, maxillary palpi brown, apical palpomere conical. Inferior eye lobe slightly longer than gena below it. Antenna with last three segments surpassing elytral apex; relative lengths of segments from base to apex: 15: 4: 20: 19: 18: 18: 18: 17: 17: 16: 16. Pronotum wider than long, 1.2 times as width as long; disc with clear basal and distal transverse grooves ( Figs. 1a, 2a ) and a middle longitudinal groove ( Fig. 2b ). Prosternal process moderately constricted between procoxae, then steeply declined toward dilated apex. Procoxal cavities completely closed. Elytra ca. 2.2 times as long as wide, parallel sided before apical tenth, then roundly narrowed to truncated apices; inner angles and outer angles are obtuse. Apical margin of sternite VII curved. Apex of hind femur reaching middle of abdominal sternite V.

Female ( Figs. 3a–3c ). Length 10.2–11.8 mm, width 3.1–3.6 mm. Female is identical to male, with antenna slightly shorter, with last two segments surpassing elytral apex and abdominal sternites quite different. Unlike the male, female abdominal sternites ( Fig. 3c ) covered with grayish pubescence intermixed by many black spots, without any golden brown long sexual setae.

Male terminalia ( Figs. 12–13 ). Tegmen length about 2.0 mm; lateral lobes rather straightly tapered from middle to narrowly rounded apices, each about 0.4 mm long and 0.2 mm wide; median lobe plus median struts slightly curved, subequal to tegmen in length; median struts shorter than half of whole median lobe in length; apex of ventral plate weakly projected ( Fig. 13a ); median foramen elongate; internal sac with two hook-shaped sclerites ( Figs. 13b, 13c ). Tergite VIII ( Figs. 12a & 12c ) trapezoidal, apex truncated with round angles, provided with medium long setae along apical and lateral sides.

Diagnosis. This new species belongs to the “narrow banded” species group. It is mostly similar to A. yitingi Holzschuh & Lin, 2013 , but can be easily distinguished from it by the following features: the whitish band wider; the anterior margins of the whitish bands “V”-shaped, instead of “U”-shaped; the posterior margin of the whitish band forms “m”-shaped, instead of an oblique line; the apex of tergite VIII truncated, not slightly emarginated; the apex of ventral plate of median lobe not as shaped as that of A. yitingi .

Etymology. This species is named after the m-shaped macula margin ( Fig. 3a , in the red rectangle) on each elytron.

Distribution. China: Zhejiang Province, Hunan Province, Guangxi Province.

Type specimens examined. Holotype, 1 ♂, Guangxi Province, Longsheng County, Maoershan (广OiAEüDz 儿山), 2011-VI-3, leg. Xin-Lei Huang (ëadz) ( IZCAS, IOZ (E) 2224561). 9 Paratypes: 1 ♂, Guangxi Province, Jinxiu County , Dayaoshan, Gubao (广Oiŵħkä山古保), 850m, 2021-IV-09, leg. J. T. Zhao ( CCCC, C21Z0046 ); 1 ♀, Guangxi Province, Jinxiu County , Dayaoshan, Pingbanshan (广Oiŵħkä山平Ú山), 2016-V-14, leg. Jin-Teng Zhao (ŭffiss) ( CCCC, C16Z0698 ); 1 ♂, Hunan Province, Yanling County , Shennonggu ( DZAE ẍĸ县ñƌ ĕ), alt. 640m, 2008-VII-5, leg. Zhuo Yang (杨卓) ( IZCAS, IOZ (E) 2224562); 1 ♀, Hunan Province, Yanling County , Shiduxiang, env. Taoyuandongcun ( DZAE ẍĸ县十δ乡fiů洞村周B), alt. 870m, 2008-VII-6, leg. Gan-Yan Yang by beating ( IZCAS, IOZ (E) 2224563); 2 ♂, 3 ♀, Zhejiang Province, Gutianshan National Nature Reserve ( CAW): 1♂: CSP15, 2010, 618m, 118,13°E / 29,25°N, NE2; 1♂: same data, SE1; 1♀: CSP03, 2010, 720m, 118,12°E / 29,24°N, NW2; 1♀: CSP06, 2010, 880m, 118,15°E / 29,25°N, NW2; 1♀: CSP09, 2010, 348m, 118,11°E / 29,24°N, SW3.

Remarks. This new species is quite similar to Desisa pterolophioides Gressitt from Fujian, China ( Gressitt, 1942a) (now in the genus Macropraonetha Breuning, 1961 ) by color and pubescence pattern, but can be separated from it by the elytron with one tubercle with tufted hairs before basal one fifth, the elytral apex truncated instead of narrow rounded, and the anterior and posterior margins of white band on elytra with different shapes.

Figures

FIGURES 1–3. Anaches m-signatus sp. nov.; 1. Holotype, ♂, from Guangxi; 2. Paratype, ♂, from Hunan; 3, Paratype, ♀, from Hunan; a. dorsal view; b. lateral view; c. ventral view. Scale bar = 4 mm.

FIGURES 9–11. Anaches spp., ♂♂, ventral view, showing the sexual patch on sternite IV. 9. A. m-signatus sp. nov.; 10. A. yitingi Holzschuh & Lin, 2013; 11. A. albaninus (Gressitt, 1942). a. Abdomen, dry specimens before dissection; b. Ventral view of the sternites III & IV, after dissection. Not to scale.

FIGURES 12–17. Anaches spp., ♂♂. 12–13. A. m-signatus sp. nov.; 14-15. A. yitingi Holzschuh & Lin, 2013; 16–17. A. albaninus (Gressitt, 1942); 12, 14, 16. Tergite VIII with sternites VIII & IX; 13, 15, 17. median lobe & tegmen. a. ventral view. b. lateral view; c. dorsal view. Scale bar = 0.05 mm or 1 mm, some not to scale.