Ithocritus ruber ( Hope, 1839 )

Bi, Wen-Xuan, Chen, Chang-Chin & Lin, Mei-Ying, 2020, Notes on the tribe Petrognathini Blanchard, 1845 from China, with description of a new species from Yunnan (Coleoptera, Cerambycidae, Lamiinae), Zootaxa 4732 (3), pp. 453-460 : 454-455

Ithocritus ruber ( Hope, 1839)

( Figs. 1–3 , 8, 9, 12, 13, 15 , 19 )

Monochamus ruber Hope, 1839: 43 ; Hope, 1840: 441, pl. 30, fig. 5.

Ithocritus ruber: Lacordaire, 1872: 448 ; Gemminger, 1873: 3059; Aurivillius, 1922: 206; Breuning, 1956: 354, fig. 1; Mukhopadhyay & Biswas, 2000: 59; Löbl & Smetana, 2010: 291; Lin & Jiroux, 2011: 108, figs. 13-18; Ohbayashi & Lin, 2012: 238, figs. 1-5; Lin & Yang, 2014: 309 , figs. 1-11; Mitra et al., 2016: 44; 2017: 86 ; Lin & Yang, 2019: 340.

Type material examined. Syntypes of Monochamus ruber , 2 males, India, Assam, leg. William Griffith (in OUMNH). Examined by photographs taken by James Hogan .

Other materials examined. China (Yunnan): 1 male, 1 female, Yunnan, Longchuan, Husa Xiang, 24.358315°N, 97.834079°E, alt. 1353m, 2013.VIII.10, leg. Zhi-Shun Song, Qiang-Feng Zheng ( IZCAS) ; 1 male, Yunnan, Gongshan, Maku, 1200m, 2015.VI.26, leg. Xiao-Dong Yang ( CCCC) ; 1 male, ditto except 1500m, 2015.VIII.7 ( CCCC) ; 1 male, ditto except 1250m, 2015.VI.27, leg. Wen-Xuan Bi ( CBWX) ; 1 female, ditto except 1500m, 2015.VII.18 ( CBWX) ; 1 male, ditto except 1250m, 2015.VII.20 ( CBWX) ; 1 male, ditto except 2015.VII.2 ( CBWX) ; 1 female, ditto except 1500m, 2015.VIII.9 ( CBWX) ; 1 female, ditto except 1500m, 2015.VII.21, leg. Chao Wu ( CBWX) . China (Xizang): 2 males, 1 female, Xizang, Motuo, Baricun, 1850m, 2014.VII.26, leg. Wen-Xuan Bi ( CBWX) ; 1 male, ditto except 2014.VII.29 ( CBWX) ; 1 female, Xizang, Linzhi City , Mêdog County, Dexingxiang , Yarang power station, 29.27022°N, 95.248532°E, alt. 706m, 2019.VIII.1, leg. Hao-Dong Yin ( IZCAS) .

Complementary description to Breuning (1956) and Lin & Jiroux (2011). Integument of body, antennae and legs blackish; elytra reddish ochraceous. Head, pronotum, elytra predominantly covered with bright pubescence which is individually variable from brick-red to pale orange or yellowish white ( Figs. 1–3 ). Ventral surface predominantly covered with fine blackish pubescence, except for anteromedian of prosternum, most of mesanepisternum, posterior angle of metasternum and lateral sides of abdominal ventrite I to V covered with same variably colored pubescence as in dorsal surface. Scutellum moderately pubescent, not obscuring integument, giving it darkened appearance ( Figs. 8, 9 ). Male genitalia with endophallus, in everted condition ( Fig. 19 ), about 2.3 times as long as median lobe, curved near apical fourth dorsally; APH defined, BPH and MPH roughly defined by basal-lateral tubercle (blt); crescent-shaped sclerite absent; MPH subdivided into MT+CT and PB by constrictions, MT ca. 1.5 times longer than CT or PB; MT with ventral swelling (vs) generally rudimentary; CT with lateral tubercles (ltc, Fig. 19d ) weakly developed; PB weakly swollen laterally and ventrally near base, thence, in ventral view, strongly constricted toward subparallel-sided apex ( Fig. 19d ); APH not subdivided, in lateral view, moderately swollen, slightly protruding ventrally; apical furrow (af) with internal membrane (im) incomplete, represented by short dorsal appendix; spicules mainly distributed on ventral apical surface of MT and apical half of PB; ejaculatory ducts (ej) paired, gonopore (gn) situated near apex of dorsal side of APH. Female with ventrite V ( Fig. 15 ) narrowly protruded, apex 0.13 times basal width.

Distribution. China: Yunnan, Xizang (new province record); India: Assam (Mukhopadhyay & Halder 2003), Meghalaya, Sikkim and West Bengal; Bangladesh (Silhet = Sylhet); Myanmar (Kachin, Mandaley), Nepal.

Figures

FIGURES 1–7. Habitus of three species. 1–3, Ithocritus ruber (Hope, 1839); 4–5, Ithocritus similis Bi & Lin, sp. nov.; 6–7, Falsimalmus niger Breuning, 1956. 1, 2, 4, 6, 7, male; 3, 5, female. 1–6, dorsal view; 7, lateral view. Not to scale.

FIGURES 8–16. Habitus of two Ithocritus species. 8, 9, 12, 13, 15, Ithocritus ruber (Hope, 1839); 10, 11, 14, 16, Ithocritus similis Bi & Lin, sp. nov. 8, 9, 10, scutellum; 11, scape (lateral view); 12, 13, 14, meso- and metathorax (lateroventral view), showing the bright pubescent maculae on mesanepisternum or metanepisternum; 15, 16, female abdominal ventrite V. Not to scale.

FIGURES 17–21. Male terminalia of three species. 17, 20, Ithocritus similis Bi & Lin, sp. nov.; 18, 21 Falsimalmus niger Breuning, 1956; 19, Ithocritus ruber (Hope, 1839). 17, 18, genitalia. 19, 20, 21, endophallus in inflated and everted condition (lateral view). a, tergite VIII with sternites VIII and IX in ventral view; b, tegmen in ventral view and lateral view; c, median lobe in ventral view and lateral view; d, apical part of endophallus (ventral view); e, enlarged apical part of endophallus (lateral view). 17, 18, scale = 1 mm; others not to scale.