Neocerambyx zubrzyckii, 2021

Miroshnikov, A. I., 2021, The longicorn beetle tribe Cerambycini Latreille, 1802 (Coleoptera: Cerambycidae: Cerambycinae) in the fauna of Asia. 16. New or little-known species of the genus Neocerambyx J. Thomson, 1861, Russian Entomological Journal 30 (3), pp. 288-296 : 288-291

N eocerambyx zubrzyckii Miroshnikov , sp.n.

Figs 3, 7, 9, 12, 16–17, 22–23, 27, 30, 33.

MATERIAL. Holotype ♂ (cAM) ( Figs 3, 9), Vietnam, Quang Nam Province, Tay Giang, Axan Mt. , 1300 m, 09.2019 (local collector). Paratypes : 1♂, 2♀ (cGZ), 1♀ (cAM) ( Figs 7, 12), same label as holotype.

DIAGNOSIS. This new species belongs to the pellitus - group [sensu Miroshnikov, 2020a] and seems to be especially similar to N. bakboensis Miroshnikov, 2018 , but differs by the less bright recumbent setation of the antennae, legs and partly

How to cite this article: Miroshnikov A. I. 2021. The longicorn beetle tribe Cerambycini Latreille, 1802 body, especially so on the venter, as in Figs 9, 12 (cf. Fig. 10); the less transverse antennomere 2, as in Figs 16–17 (cf. Figs 18–19); the shorter median groove between the eyes and partly on the vertex, as in Figs 16–17 (cf. Figs 18–19); the structure of the male pronotum, including its wider shape, the somewhat peculiar sculpture of the disc, as in Fig. 16 (cf. Fig. 18); the structure of the submentum, in particular, the narrower area on its each lateral side bearing a less strongly expressed, less coarse puncturation, as indicated by arrows in Figs 22–23 (in N. bakboensis , the submentum with a wider area on each lateral side, bearing a more strongly expressed, coarser puncturation, as indicated by arrows in Fig. 24); the structure of the male genitalia, including the shape of the apical part of the penis, tegmen and tergite 8, as in Figs 27, 30, 33 (cf. Figs 28, 31, 34 ). Neocerambyx zubrzyckii sp.n. can also be compared to N. theresae ( Pic, 1946) , but is distinguished through the coarser, somewhat peculiar sculpture of the pronotum, as in Figs 16–17 (cf. Figs 20–21); the structure of the submentum, in particular, the nearly straight posterior margin, as indicated by arrows in Figs 22–23 (in N. theresae , the posterior margin of the submentum is broadly rounded, as indicated by arrows in Figs 25– 26); the less elongated antennomeres 3–8 in the male, as in Fig. 3 (cf. Fig. 4); the structure of the male genitalia, as in Figs 27, 30, 33 (cf. Figs 29, 32, 35 ); the larger body sizes.

DESCRIPTION.Body length 55–60.1 mm, humeral width 15.7– 17 mm, thereby holotype 59.1 mm and 16.4 mm, respectively. Head, pronotum, scutellum, legs, except for coxae partly, antennae completely or almost entirely, prosternum mostly, mesosternum entirely or mostly black; elytra dark reddish brown; metasternum, visible part of abdomen black-brown or dark reddish brown; apical part of prosternal process and coxae partly red-brown and dark red-brown tones.

Head with very well-developed antennal tubercles, especially so in male; with a very deep, pretty wide median groove between eyes and partly on vertex; eyes moderately convex; genae long; submentum with very coarse transverse folds, in addition, with a rough, partly dense puncturation, this being most expressed on each lateral side; neck ventrally and laterally with very clear and sharp transverse folds; antennae of male significantly longer than body, reaching beyond apex of elytra by apical part of antennomere 7, in female distinctly not reaching the apex of elytra; length ratio of antennomeres 1–11 in male (holotype taken as an example), 32: 6: 58: 37: 57: 55: 57: 55: 53: 48: 62, in female (one of the paratypes taken as an example), 25: 4: 36: 23: 34: 31: 29: 24: 22: 18: 20; antennomere 1 without coarse sculpture, only with a small dense puncturation, apical external angle rounded; antennomere 2 slightly transverse; external apical angle of antennomeres 5–10 without spine; last antennomere rounded apically.

Pronotum 1.25–1.3 or 1.17–1.2 times as wide as long in male and female, respectively (in male of N. bakboensis , 1.15–1.18 times); at base distinctly wider than at apex; usually with a sharp or distinct constriction at apex and base, respectively; on disc clearly or slightly convex in male and female, respectively; with coarse, irregular, partly or predominantly transverse folds, thereby in holotype with longitudinal folds in middle part of disc, as in Fig. 16.

Scutellum triangular, with small distinct punctures.

Elytra moderately elongated, 2.42–2.59 times as long as humeral width; predominantly barely/slightly narrowed towards apex or about parallel-sided starting from base in male and female, respectively; with a very small and very dense puncturation; apical external angle obtuse, sutural angle with a short denticle.

Prosternum with a deep transverse groove in front of middle, with rough, irregular, more or less short folds and wrinkles in front of it and with coarse, partly transverse and longitudinal folds behind groove; prosternal process with a distinct or very well-expressed apical tubercle; mesosternal process without tubercle dorsally, between coxae distinctly or very clearly wider than prosternal process; meso- and metasterna and abdominal sternites with a very small dense puncturation; metasternum with a very sharp median groove; last (visible) abdominal sternite at apex in male widely rounded, in female with a shallow emargination; last (visible) abdominal tergite at apex in male narrowly and shallowly emarginate, in female with a less noticeable emargination.

Legs moderately long; femora and tibiae quite robust in male; metatarsomere 1 barely longer than tarsomeres 2 and 3 combined in length.

Recumbent setation predominantly yellowish, partly with a golden tint (in N. bakboensis , recumbent setation mainly bright, golden yellow, brightest on venter, as in Fig. 10), densest mainly on venter and legs, least dense on elytra, resulting in their looking dark.

Genitalia as in Figs 27, 30, 33 .

ETYMOLOGY. I am pleased to dedicate this new species to Mr Greg Zubrzycki (Gdansk, Poland), who kindly provided a very valuable material for study and generously shared some specimens.

DISTRIBUTION. Vietnam: Quang Nam Province.

Figures

Figs 27–35. Neocerambyx spp., male genitalia: 27, 30, 33 — N. zubrzyckii sp.n., holotype; 28, 31, 34 — N. bakboensis, paratype; 29, 32, 35 — N. theresae; 27–29 — apical part of penis; 30–32 — apical part of tegmen; 33–35 — apical part of tergite 8. Рис. 27–35. Neocerambyx spp., гениталии самца: 27, 30, 33 — N. zubrzyckii sp.n., голотип; 28, 31, 34 — N. bakboensis, паратип; 29, 32, 35 — N. theresae; 27–29 — верШиннаЯ часть пениса; 30–32 — верШиннаЯ часть тегмена; 33–35 — верШиннаЯ часть 8-го тергита.