Trigonotoma lewisii Bates 1873
Creators: name: Fedorenko, D. N.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Trigonotoma
Trigonotoma lewisii

description: [3. Trigonotoma lewisii Bates, 1873]
Figs 10, 18, 26, 36, 45–46, 51, 56, 73–74.
Bates, 1873: 284 (‘Hiogo; Nagasaki, …’); Bates, 1890: 105 (part.); Zhu et al., 2020: 51, 61. — lewisi: Harold, 1877: 339; Chaudoir, 1878: 33; Kuntzen, 1911: 182; 1914: 63; Csiki, 1929: 517; Andrewes, 1930: 355; Jedlička, 1962: 319; Dubault et al., 2007: 216; 2010b: 115 (part.); Roux et al., 2016: 168 (part.).
MATERIAL. 14 specimens (ZIN): 2♂♂, ♀, Japan (Coll. Bates); ♂, Nagasaki (Coll. Bates); 2♀♀, Shizuoka, env. Izu-Nagaoka, Mt. Katsuragiyama, 23.II.1964 (R. Ishikawa); ♀, Aichi, Hoi Co., Mt. Miyajiyama, 1.III.1964 (R. Ishikawa); ♂, ♀, Mt. Kongo, 10.XI.1963; China: ♀, Mandzhuria (Coll. Lésileac); 2♂♂, ‘г[ора]. Я- чжоу, О- минь- сЯнь (Сычуань), 29.III–5.IV.1893, Потанин’ [= Ya’an, Emeishan, Sichuan (G.N. Potanin)]; 2♂♂, same data, except for ‘Дол[ина]. р. Я [= Min Jiang?] ’; ♀ (SIEE), NE Guangxi, 15 km N of Langsheng, 1.000 m, 15–22.V.1995 (S. Kurbatov).
Aedeagus and internal sac examined in three or two males, respectively; genitalia and reproductive tract examined in one female.
DIAGNOSIS. A medium-sized macropterous species, with forebody dorsum bright metallic, cupreous green or golden green. Meso- and metatarsus with distinct and usually sharp lateral carina and sulcus above; metatarsomere 1 with one or more posterolateral setae. Aedeagus (Fig. 56) densely, vaguely to rather distinctly striated along left lateral third of ventral side; apex quadrate in right dorsolateral view, with right margin angulate outside oblique dorsal ridge; internal sac tubiform, slightly broadened across base, without well-differentiated bulbs (Figs 73–74).
REDESCRIPTION. For recognition only. Just as for T. nitidicollis and T. aurifera, excepting body smaller, BL 17– 18.5 mm, sometimes 15.4 mm. Elytra with slight violaceous luster. Pronotal microsculpture superficial yet mostly traceable, consisting of moderately transverse meshes; elytral sculpticells very small, transverse and narrow. Scape just as long as antennomeres 2–4 combined in more than 80% of the specimens measured.
Female bursa copulatrix short (Fig. 38).
GEOGRAPHIC DISTRIBUTION. Widespread in China (including Taiwan) to Japan (Kyushu and Honshu), supposedly south of the Yangtze River in China, with all or most of the records in Yunnan referred probably to T. chrysites. For a distribution map see Zhu et al. [2020].
HABITATS AND HABITS. No data. Supposedly, eurybiotic at lower altitudes.
COMMENTS. This species is here accepted separate from T. bhamoensis and T. chrysites, which species have formerly been considered as conspecific with [Dubault et al., 2010b] or subspecies of [Roux et al., 2016] T. lewisii. Among them, T. bhamoensis is only distinctive in having a trapezoidal and longer (vs. quadrate) apex of the median lobe of aedeagus.
I have only seen a female paralectotype (ZIN) of T. bhamoensis with the labels ‘Bhamò [= Bhanmo = Banmaw]/ Birmania / Fea IX 1886 ’ and ‘ Paralectotypus [red printed]’. It is more similar to T. piermorvani Dubault et al., 2010 described from Chiang May, northwestern Thailand, rather than T. lewisii and T. chrysites. Another female specimen from ZIN Collection, with similar labels ‘Bhamò / Birmania / Fea VIII 1886 ’ and ‘ Paratypus [red printed]’ proved a misidentified specimen of T. dohrnii.
To prevent some confusion in future, it is worthy of minute note that Dubault et al. [2007] designated the lectotype of T. lewisii, but then they [Roux et al., 2016] wrongly mentioned the holotype of this species.
description: Published as part of Fedorenko, D. N., 2024, Notes on Trigonotoma and Pareuryaptus (Coleoptera: Carabidae: Pterostichini) from Vietnam, pp. 43-71 in Russian Entomological Journal 33 (1) on pages 47-49, DOI: 10.15298/rusentj.33.1.05, http://zenodo.org/record/14162968