Theopea cheni, Lee & Bezdĕk, 2018

Lee, Chi-Feng & Bezdĕk, Jan, 2018, Revision of the genus Theopea Baly (Coleoptera: Chrysomelidae: Galerucinae) of East Asia: species lacking modified clypeus in males and the T. sauteri species group, Zootaxa 4508 (3), pp. 334-376 : 340-344

Theopea cheni sp. nov.

( Figs 1A, 1B , 4 A–4C, 5)

Theopea sauteri Chûjô, 1935a: 169 (part).

Types (n= 131). Holotype ♂ ( TARI): TAIWAN. Pingtung: Changle (長樂), 50 m, 7.II.2014 , leg. J.-C. Chen. Paratypes: 3♂♂ ( TARI), same data as holotype; Nantou : 2♂♂, 1♀ ( SEHU), Lienhwachi (連華池), 650 m, 16– 17.III.1978, leg. J. Ito ; 2♂♂, 1♀ ( SEHU), same locality, 26.III.1981, leg. K. Ikeda ; Kaohsiung: 1♂, 1♀ ( MCSN), Kosempo (= Chiasien, 甲仙), 250 m, IV.1908, leg. H. Sauter ; 1♀ ( TARI), Shanping (扇平), 750 m, 3.V.2014 , leg. W.- C. Liao; Pingtung : 2♀♀ ( TARI), Chiupeng (九棚), 50 m, 27.II.–13.III.2010 , leg. M.-L. Jeng; 2♂♂ ( TARI), Hsuhai (旭海), 300 m, 20.I.2012 , leg. M.-H. Tsou; 2♂♂ ( TARI), Kaoshih (高士), 100 m, 1.III.2011 , leg. J.-C. Chen; 1♀ ( TARI), same locality, 27.IV.2012 , leg. M.-H. Tsou; 1♀ ( SEHU), Kenting (墾丁), 50 m, 16–25.III.1976, leg. H. Ono ; 1♀ ( EUMJ), same locality, 17.III.1977, leg. Y. Notsu ; 2♀♀ ( TARI), same locality, 24–28.VI.1981, leg. T. Lin & C. C. Pan ; 2♂♂, 1♀ ( TARI), 22–26.II.1982, leg. T. Lin & S. C. Lin ; 1♀ ( TARI), same locality, 15.III.1984, leg. K.C. Chou & C. C. Pan ; 1♀ ( NMNS), 10–12.III.2004, leg. C.S. Lin ; 1♂, 2♀♀ ( TARI), same locality, 19.II.2011 , leg. H.-H. Tseng & Y.-C. Lan; 3♀♀ ( TARI), Lilungshan (里龍山), 900 m, 2.III.2012 , leg. J.-C. Chen; 2♀♀ ( TARI), 13.III.2012 , leg. J.-C. Chen; 1♂ ( TARI), same locality, 8.I.2013 , leg. J.-C. Chen; 1♀ ( TARI), same locality, 16.II.2013 , leg. J.-C. Chen; 1♂, 2♀♀ ( TARI), same locality, 5.III.2013 , leg. J.-C. Chen; 2♀♀ ( TARI), same locality, 19.III.2013 , leg. J.-C. Chen; 2♂♂, 3♀♀ ( TARI), same locality, 18.II.2014 , leg. J.-C. Chen; 2♀♀ ( TARI), same locality, 28.II.2014 , leg. J.-C. Chen; 1♂, 2♀♀ ( TARI), same locality, 8.III.2014 , leg. J.-C. Chen; 1♀ ( TARI), same locality, 20.III.2014 , leg. J.-C. Chen; 2♂♂, 1♀ ( TARI), same locality, 24.III.2014 , leg. J.- C. Chen; 2♂♂, 6♀♀ ( TARI), same locality, 23.III.2016 , leg. Y.-T. Chung; 1♀ ( TARI), Mutan (牡丹), 300 m, 14.III.1984, leg. K.C. Chou & C. C. Pan ; 5♀♀ ( TARI), same locality, 14.II.2009 , leg. Y.-T. Chung; 3♂♂ ( TARI), same locality, 29.I.2015 , leg. J.-C. Chen; 1♂ ( NMNS), Nanjenshan (= Mt. Nan-Len , 南仁山), 450 m, 6.II.1991 , leg. Y.-H. Chen; 4♀♀ ( TARI), 1.III.2011 , leg. J.-C. Chen; 1♀ ( TARI), same locality, 10.III.2011 , leg. J.-C. Chen; 2♀♀ ( TARI), same locality, 31.III.2011 , leg. J.-C. Chen; 1♀ ( TARI), same locality, 29.III.2011 , leg. C.-S. Chiu & Y.-C. Lan; 2♂♂, 7♀♀ ( TARI), Neiwen (內文), 800 m, 24.II.2012 , leg. M.-H. Tsou; 1♂ ( TARI), same locality, 30.I.2015 , leg. J.-C. Chen; 2♂♂ ( TARI), Shihtzu (獅子), 20 m, 17.II.2014 , leg. J.-C. Chen; 4♀♀ ( TARI), Shouka (壽卡), 400 m, 25.II.2009 , leg. C.-F. Lee; 6♀♀ ( TARI), same locality, 24.II.2012 , leg. M.-H. Tsou; 1♀ ( EUMJ), same locality, 6.III.2017, leg. N. Ohbayashi ; 1♂ ( TARI), Shuangliu (雙流), 400 m, 2.IV.2018 , leg. Y.-T. Chung; 1♀ ( HNHM), Teraso (= Manchoutsun , 滿州村), II.1909, leg. Sauter ; 1♂, 1♀ ( TARI), Tsaopu (草埔), 500 m, 17.II.2014 , leg. J.-C. Chen; 1♀ ( TARI), same locality, 27.II.2015 , leg. J.-C. Chen; 4♂♂, 4♀♀ ( TARI), same locality, 7.III.2016 , leg. Y.-T. Chung; 1♂, 6♀♀ ( TARI), Tungyuan (東源), 300 m, 3.III.2017 , leg. Y.-T. Chung; 1♀ ( TARI), Wanlite (萬里得), 500 m, 7–28.II.2010 , leg. M.- L. Jeng; Tainan : 1♀ ( TARI), Kantoushan (崁頭山), 800 m, 24.V.2014 , leg. W.-C. Liao; 3♀♀ ( TARI), Pichien trail (碧尖步道), 800 m, 22.III.2010, leg. U. Ong.

Theopea sauteri . Paratypes: 1♀ (TARI), labeled: “Kankau (= Henchun, 恆春, in Pintung County) ( Formosa) / H. Sauteri VII. 1912 [p, w] / 7. IV. [p, w] // Paratype [h, red letters, pink label] // Theopea / sauteri / CHÛJÔ [h] / DET. M. CHUJO [p, w] // 2844 [p, w]”; 1♀ (SDEI): “Teraso (= Manchoutsun, 滿州村, in Pingtung County) II.09 [h, w] // Paratype [h, red letters, pink label] // Theopea / sauteri / CHÛJÔ [h] / DET. M. CHUJO [p, w]”. Both paratypes of Theopea sauteri are designated as paratypes of T. cheni sp. nov.

Description. Length 4.8–6.6 mm, width 2.0– 2.5 mm. General color ( Figs 4 A–4C) metallic green; mouth parts including clypeus brown or dark brown; legs pale yellow; antennae dark brown. Vertex with reticulate microsculpture. Antennae filiform in males ( Fig. 5A ), antennomeres III–X straight, length ratios of antennomeres I–XI 1.0: 0.2: 1.0: 1.3: 1.4: 1.3: 1.4: 1.4: 1.4: 1.4: 1.4. length to width ratios of antennomeres I–XI 3.0: 1.0: 3.6: 4.5: 4.6: 4.3: 4.6: 5.5: 5.9: 6.6: 6.8; shorter in females ( Fig. 5B ), length ratios of antennomeres I–XI 1.0: 0.3: 0.7: 1.1: 1.0: 1.0: 1.0: 0.9: 0.9: 0.8: 1.1, length to width ratios of antennomeres I–XI 3.4: 1.8: 3.4: 4.8: 4.6: 4.4: 4.5: 4.4: 4.1: 3.8: 5.4. Pronotum transverse, 1.3x wider than long, disc with reticulate microsculpture, dense, coarse punctures, and one pair of lateral depressions; lateral margin basally narrowed; apical and basal margins subtruncate. Elytra elongate and parallel-sided, 1.8x longer than wide; disc with reticulate microsculpture, dense, coarse punctures arranged into longitudinal rows, and weak longitudinal ridges between longitudinal rows of punctures. Apical margin of abdominal ventrite V in females rounded but slightly depressed near medial area ( Fig. 5H ). Tarsomeres I of front legs swollen in males ( Fig. 5I ), subparallel in female ( Fig. 5J ). Penis ( Figs 5 C–5E) extremely slender, 12.9x longer than wide; apically narrowed, apex with medial, shallow, narrow notch; parallelsided; tectum extremely elongate from apical 1/10 to basal 1/3, apically narrowed; straight in lateral view, slightly curved near base; triangular sclerites short and broad; internal sac with elongate endophallic sclerite complex, 0.6x as long as penis, composed of two sclerites, basal piece much longer (1.4x) than apical piece, dorsal sclerite apex acute and straight in lateral view. Gonocoxae ( Fig. 5F ) elongate, slightly broadened subapically, connected from basal 1/3 to apical 1/4; apices narrowly rounded, each gonocoxa with eight setae along outer margin from apex to apical 1/6; with one pair of short lateral processes at basal 2/5. Ventrite VIII ( Fig. 5G ) longitudinal and well sclerotized; disc with several long setae at sides and near apical margin, and with dense, short setae along apical margin; spiculum extremely slender. Receptacle of spermatheca ( Fig. 5K ) strongly swollen; pump slender and strongly curved; proximal spermathecal duct deeply inserted into receptacle, broad and short.

Diagnosis. Adults of Theopea cheni sp. nov. are similar to those of some specimens of T. sauteri from southern Taiwan based on the similar color pattern. They can be distinguished by the reduction of longitudinal ridges on the apical 1/3 of the elytra ( Figs 4C, 4D ), straight antenna in males ( Fig. 5A ) (curved antenna in males of T. sauteri ( Fig. 19A )), and straight dorsal sclerite of endophallic sclerite complex ( Figs. 5C, 5D ) (hook-like dorsal sclerite in T. sauteri ( Fig. 19D ))

Etymology. This new species is dedicated to Jung-Chan Chen, a member of TCRT and the first to collect this new species.

Food plants. Floricolous species ( Fig. 1A ). Adults were found on the flowers of Castanopsis indica and C. formosana (Fagaceae) , and Machilus zuihoensis (Lauraceae) .

Distribution. Central and South Taiwan (Nantou, Tainan, Kaohsiung, and Pingtung counties) below 1000 m ( Fig. 6A ). Adults appear from January to June, but most of them (88%) are present during February and March.

Figures

FIGURES 1. Ecological images. 1A. Female of Theopea cheni sp. nov. visiting flowers; 1B. Left: female of T. cheni sp. nov., right: male of T. sauteri; 1C. Adults of T. collaris feeding on leaves of Neolitsea parvigemma; 1D. Female of T. irregularis; 1E. A couple of T. kanmiyai; 1F. Female of T. sauteri.

FIGURES 4. Habitus of Theopea cheni sp. nov. and T. sauteri Chûjô. 4A. T. cheni sp. nov., male, dorsal view; 4B. Same, ventral view; 4C. T. cheni sp. nov., female, dorsal view; 4D. T. sauteri, male, Mutanchihshan (ËṚḾƜ), dorsal view; 4E. Same, ventral view; 4F. T. sauteri, male, Liyuan (Mȁ), dorsal view; 4G. T. sauteri, female, Liyuan (Mȁ), dorsal view; 4H. T. sauteri, male, Lilungshan (BÊƜ), dorsal view; 4I. Same, ventral view.

FIGURES 5. Diagnostic characters of Theopea cheni sp. nov. 5A. Antenna, male; 5B. Antenna, female; 5C. Penis, dorsal view; 5D. Penis, lateral view; 5E. Penis, ventral view; 5F. Gonocoxae; 5G. Abdominal ventrite VIII; 5H. Apical margin of abdominal ventrite V, female; 5I. Tarsi of front leg, male; 5J. Tarsi of front leg, female; 5K. Spermatheca.

FIGURES 6. Distribution maps of Theopea cheni sp. nov. and T. collaris Kimoto. Solid line: 1000 m, broken line: 2000 m. 6A. Theopea cheni sp. nov.; 6B. T. collaris, blue spots: metallic green elytra; red spots: brown elytra.

FIGURES 19. Diagnostic characters of Theopea sauteri Chûjô. 19A. Antenna, male; 19B. Antenna, female; 19C. Penis, dorsal view; 19D. Penis, lateral view; 19E. Penis, ventral view; 19F. Gonocoxae; 19G. Abdominal ventrite VIII; 19H. Apical margin of abdominal ventrite V, female; 19I. Tarsi of front leg, male; 19J. Tarsi of front leg, female; 19K. Spermatheca.