Spinidymasius pseudohuedepohli Miroshnikov, 2022

Miroshnikov, A. I., 2022, The longicorn beetle tribe Cerambycini Latreille, 1802 (Coleoptera: Cerambycidae: Cerambycinae) in the fauna of Asia. 17. A new species of the genus Spinidymasius Miroshnikov, 2017 from Borneo, with the description of the female of S. huedepohli (Vives, 2005) and new synonymy, Russian Entomological Journal 31 (1), pp. 47-52 : 48

Spinidymasius pseudohuedepohli Miroshnikov , sp.n.

Figs 1–2 , 8, 10, 12, 14, 18 , 20, 22, 24, 26.

Spinidymasius? huedepohli : Miroshnikov, 2017: 191, 194 (E Malaysia, Sabah, Keningau Distr., Trus Madi Mt.).

MATERIAL. Holotype, ♂ (cGC) ( Figs 1 , 8 ), Indonesia, W Kalimantan, Bawang Mt., 00°53´N / 109°22´E, 15.06.2016, unknown collector, “ Elydnus huedepohli Vives, 2005 , Col. Chemin ”; paratype, ♀ (cAM) ( Figs 2 , 10 ), E Malaysia, Sabah, Keningau Distr., Trus Madi Mt. , 1250 m, 05°26´35´´N / 116°27´05´´E, 22– 26.05.2014, leg. A. Klimenko, “ Spinidymasius? huedepohli ( Vives, 2005) ♀ det. A. Miroshnikov 2017 ” .

COMPARATIVE MATERIAL. Spinidymasius huedepohli ( Vives, 2005) : see below; Spinidymasius ochraceovittatus (Hüdepohl, 1989) : holotype ♂ ( ZSM) ( Fig. 9 ), “Borneo, Sabah, Kumanis [sic] Road, 10th ml., IV.[19]86”, “Holotypus ♂ Elynus [sic] ochraceovittatus mihi, Hüdepohl 1988”; paratype ♂ ( ZSM), “Borneo, Sabah, Kumanis [sic] Road, 10th ml., V.[19]86”, “Paratypus ♂ Elydnus ochraceovittatus mihi, Hüdepohl 1988”; paratype ♂ ( ZSM), “Borneo, Sabah, Kumanis [sic] Road, 9th ml., VI.[19]86”, “ Paratypus ♂ Elydnus ochraceovittatus mihi, Hüdepohl 1988” .

DIAGNOSIS. This new species is very similar to S. huedepohli , but differs by the slenderer, long, sharp spine at the apical external angle of the elytra, especially so in the female, as in Figs 12, 14 (cf. Figs 13, 15 ); the less bright colouration of the recumbent setation at least of the body; the structure of the genitalia, in particular, the parameres being more connivent with each other, as in Fig. 20 (cf. Fig. 21 ), the narrower penis at the apex, as in Fig. 22 (cf. Fig. 23 ), the somewhat peculiar shape of male tergite 8 apically, as in Fig. 24 (cf. Fig. 25 ), as well as by the styles being distinctly narrowed towards the apex, at the very apex relatively narrower and more strongly sloped, as in Fig. 26 (cf. Fig. 27 ); some features of the male, in particular, the shorter antennae, the less elongated antennomeres 6–11, especially so the last one, as in Fig. 1 (cf. Figs 4– 5 ), the length ratio of the last two antennomeres, the absence of sharply expressed folds on antennomere 3, the well-developed emargination at the apex of the last (visible) abdominal sternite, as in Fig. 18 (cf. Fig. 19 ); some features of the female, in particular, the not toothed sutural angle of the elytra, as in Fig. 14 (cf. Fig. 15 ), the length ratio of the last two antennomeres. Spinidymasius pseudohuedepohli sp.n. can also be compared to S. ochraceovittatus , but is distinguished through the less elongated elytra, at least so in the male, as in Fig. 1 (cf. Fig. 9 ), the presence of a long sharp spine at the apical external angle of the elytra and vice versa, the absence of a long spine at the sutural angle of the elytra, only with a short tooth there in the male, as in Figs 12, 14 (cf. Figs 16–17 ), the shorter male antennae, the less elongated many male antennomeres, especially so the last one, as in Fig. 1 (cf. Fig. 9 ), and some other traits.

DESCRIPTION. Body length 21.0–23.5 mm, humeral width 5.3–5.55 mm, thereby the holotype smallest. Head dorsally, mandibles, eyes, basal antennomeres partly, pronotum, elytra almost entirely black; antennae mostly, scutellum, elytral epipleurae and apical teeth, venter entirely or almost completely, legs reddish brown and dark reddish brown.

Head with well-expressed antennal tubercles; with a deep or only shallow median groove between eyes and partly on vertex; eyes moderately convex; submentum mainly deeply impressed, with a rough, somewhat heterogeneous puncturation; neck ventrally and partly laterally with sharp, transverse, partly short folds; antennae of male much longer than body, nearly reaching the apex of elytra by apex of antennomere 8, in female reaching beyond apex of elytra by last antennomere; length ratio of antennomeres 1–11 in male, 43: 14: 51: 35: 38: 69: 81: 77: 71: 68: 134, in female, 45: 14: 54: 35: 37: 62: 67: 60: 53: 47: 47; antennomere 1 with a sharply expressed cicatrix, in addition, in male with coarse folds, being longitudinal mainly on dorsal side, in female with a clearly less coarse sculpture formed mostly by rugose rough puncturation; antennomere 2 slightly transverse; antennomeres 6–10 endoapically spined, most strongly so in female; antennomeres 7–10 ectoapically toothed and, in addition, strongly broadened in female; last antennomere apically sharpened in male or drawn into a sharp spine in female; last antennomere 1.97 times as long as penultimate antennomere in male, while these antennomeres subequal in length in female (in S. huedepohli , last antennomere 2.85–3.31 or 1.14 times as long as penultimate antennomere in male and female, respectively).

Pronotum distinctly longitudinal, 1.09–1.16 times as long as width; base 1.25–1.36 times as wide as apex; with a sharp constriction near apex; on disk slightly or moderately convex in male and female, respectively, with coarse transverse folds, as in Figs 1–2 .

Scutellum strongly narrowed towards apex, triangular, narrowly rounded apically.

Elytra moderately narrowed towards apex; 2.44 or 2.68 times as long as humeral width in male and female, respectively; with a distinct, small, dense, more or less uniform puncturation, being predominantly poorly expressed near suture in about basal quarter; apical sutural angle clearly toothed or subrectangular in male and female, respectively, as in Figs 12, 14 (in female of S. huedepohli , sutural angle toothed, like in male, as in Figs 13, 15 ), external angle drawn into a long, relatively slender, sharp spine, as in Figs 12, 14 .

Prosternum with a very well-developed transverse groove in front of middle, with rough and coarse, transverse folds in apical part, being most coarse behind groove; prosternal process pretty wide, very strongly broadened at apex, with a sharply expressed apical tubercle; mesosternal process between coxae only slightly wider than prosternal process, with a strong tubercle dorsally; mesosternum partly, metasternum and abdominal sternites with a small dense puncturation; metasternum with a sharp median groove; last (visible) abdominal sternite at apex with a well-expressed wide emargination in male, as in Fig. 18 , or widely rounded in female; last (visible) abdominal tergite at apex widely rounded or truncate, with a shallow emargination in male and female, respectively.

Legs moderately long; pro- and mesofemora weakly claviform, metafemora not claviform; metatarsomere 1 significantly shorter than metatarsomeres 2 and 3 combined.

Structure of recumbent dense setation like in S. huedepohli , but its colouration relatively less bright, mostly of yellow tones, and only little part yellow-orange (in S. huedepohli , recumbent dense setation of body and antennae mainly of orange and yellow-orange tones, only partly yellow; see Note below).

Genitalia as in Figs 20, 22, 24, 26 .

ETYMOLOGY. In Greek, pseudo (ψευδο) means “false”, i.e., in general the name is treated as “false huedepohli ”.

NOTE. The differences in the colouration of recumbent setation are clearly visible when comparing the corresponding specimens of S. pseudohuedepohli sp.n. and S. huedepohli , and may not be quite distinct when comparing their images.

DISTRIBUTION. Borneo.

Figures

Figs 1–7. Spinidymasius spp., habitus and labels: 1–2 — S. pseudohuedepohli sp.n.; 3–7 — S. huedepohli (4, 7 — photographs by Daniel Heffern); 1, 5–6 — holotypes; 2 — paratype; 1, 4–5 — males; 2–3, 7 — females. Рис. 1–7. Spinidymasius spp., обЩий вид и Этикетки: 1–2 — S. pseudohuedepohli sp.n.; 3–7 — S. huedepohli (4, 7 — фотографии Д. Хефферна); 1, 5–6 — голотипы; 2 — паратип; 1, 4–5 — самцы; 2–3, 7 — самки.

Figs 8–19. Spinidymasius spp.: 8, 10, 12, 14, 18 — S. pseudohuedepohli sp.n.; 9, 16–17 — S. ochraceovittatus; 11, 13, 15, 19 — S. huedepohli; 8–9, 12–13, 16, 18–19 — holotypes; 10, 14, 17 — paratypes; 8–9, 12–13, 16–19 — males; 10–11, 14–15 — females; 8, 10– 11 — habitus, ventral view; 9 — habitus, dorsal view; 12–17 — elytral apex; 18–19 — last (visible) abdominal sternite of male. Рис. 8–19. Spinidymasius spp.: 8, 10, 12, 14, 18 — S. pseudohuedepohli sp.n.; 9, 16–17 — S. ochraceovittatus; 11, 13, 15, 19 — S. huedepohli; 8–9, 12–13, 16, 18–19 — голотипы; 10, 14, 17 — паратипы; 8–9, 12–13, 16–19 — самцы; 10–11, 14–15 — самки; 8, 10– 11 — обЩий вид, сниЗу; 9 — обЩий вид, сверху; 12–17 — верШина надкрылий; 18–19 — последний (видимый) брЮШной стернит самца.

Figs 20–27. Spinidymasius spp., genitalia: 20, 22, 24, 26 — S. pseudohuedepohli sp.n. (20, 22, 24 — holotype, male; 26 — paratype, female); 21, 23, 25, 27 — S. huedepohli (21, 23, 25 — holotype, male; 27 — female); 20–21 — apical part of tegmen, ventral view; 22– 23 — apical part of penis, ventral view; 24–25 — apical part of male tergite 8, dorsal view; 26–27 — coxites and styles, dorsal view. Рис. 20–27. Spinidymasius spp., гениталии: 20, 22, 24, 26 — S. pseudohuedepohli sp.n. (20, 22, 24 — голотип, самец; 26 — паратип, самка); 21, 23, 25, 27 — S. huedepohli (21, 23, 25 — голотип, самец; 27 — самка); 20–21 — верШиннаЯ часть тегмена, сниЗу; 22– 23 — верШиннаЯ часть пениса, сниЗу; 24–25 — верШиннаЯ часть 8-го тергита самца, сверху; 26–27 — кокситы и стилусы, сверху.