Theopea collaris Kimoto, 1989

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 : 344-345

Theopea collaris Kimoto

( Figs 1C , 2 D–2H, 7)

Theopea collaris Kimoto, 1989a: 75 ; Kimoto, 1991: 16 (faunistic records); Kimoto & Chu, 1996: 87 (catalogue); Kimoto &

Takizwa, 1997: 202 (redescription); Beenen, 2010: 489 (catalogue); Lee & Cheng, 2010: 167 (redescription).

Types. Paratypes. TAIWAN. Kaohsiung: 4 exs. ( KMNH): “ Sha Piung [sic!] (= Shanping, ḆỸ), / (Alt. 1000m.) / near Liu Kui (六龜), / S-Taiwan / 29.IV.1986 / Col. K. Baba [p, w] // Theopea / collaris / n. sp. [h] / Det. S. Kimoto, 19[p]89 [h, w] // PARATYPE [p, b]”; 1 ex. ( KMNH): “Shi Nan Shan (溪南山), / near Liu Kui (六龜), / S-Taiwan / 29.IV.1986 / Col. K. Baba [p, w] // Theopea / collaris / n. sp. [h] / Det. S. Kimoto, 19[p]89 [h, w] // PARATYPE [p, b] // PHOTO [p, r]”; 3 exs. ( KMNH): “Tao Nah (= Tona, ƫṁ), / near Mao Lin (茂林), / S-Taiwan / 30.V.1986 / Col. K. Baba [p, w] // Theopea / collaris / n. sp. [h] / Det. S. Kimoto, 19[p]89 [h, w] // PARATOPOTYPE [p, b]” .

Other specimens examined (n= 59). TAIWAN. Kaohsiung: 1♀ ( ZSM), Fu Shin, near Liu Kuei (六龜), 6.VI.1989, leg. K. Baba ; 1♀ ( SEHU), Shanping (扇平), 750 m, 30.IV.1982, leg. T. Endô ; 1♀ ( TARI), same locality, 12.IV.2014 , leg. W.-C. Liao; 3♀♀ ( TARI), same locality, 3.V.2014 , leg. W.-C. Liao; Pingtung: 1♀ ( TARI), Chiupeng (九棚), 50 m, 27.II.–13.III.2010 , leg. M.-L. Jeng; 1♀ ( TARI), Kaoshih (高士), 100 m, 27.IV.2012 , leg. J.-C. Chen; 1♂ ( TARI), Kenting (墾丁), 50 m, 22.III.1980, leg. K.S. Lin ; 1♂ ( TARI), same locality, 22– 26.III.1982, leg. T. Lin & S. C. Lin ; 7♀♀ ( TARI), same locality, 10.V.2014 , leg. Y.-C. Lan; 1♂ ( TARI), same locality, 11.V.2014, leg. K. Takahashi ; 3♂♂, 6♀♀ ( TARI), Lilungshan (里龍山), 900 m, 25.V.2010 , leg. J.-C. Chen; 1♂ ( TARI), same locality, 27.III.2012 , leg. J.-C. Chen; 11♂♂, 6♀♀ ( TARI), same locality, 17. IV.2 0 18, leg. C.-F. Lee; 1♀ ( TARI), Nanjenshan (南仁山), 450 m, 7.V.2014, leg. K. Takahashi 1♀ ( TARI), Sheting park (社頂公 園), 150 m, 10.V.2014 , leg. Y.-C. Lan; 1♀ ( TARI), Tahanshan (大漢山), 1000 m, 20.VII.2007 , leg. M.-H. Tsou; 4♀♀ ( TARI), same locality, 25.V.2008 , leg. C.-F. Lee; 3♀♀ ( TARI), same locality, 4.VII.2008 , leg. M.-H. Tsou; 1♂, 2♀♀ ( TARI), same locality, 28.IV.2009 , leg. M.-L. Jeng; 1♀ ( TARI), same locality, 10.V.2013 , leg. Y.-T. Chung; 1♀ ( TARI), same locality, 30.V.2014 , leg. Y.-T. Chung; 1♀ ( TARI), same locality, 19.V.2015 , leg. Y.-T. Chung.

Redescription. Length 4.9–6.0 mm, width 1.7–2.1 mm. General color ( Figs 2 D–2F) yellowish brown; antennae dark brown; elytra metallic green; vertex and pronotum with metallic green iridescence, strong in some individuals, sometimes darkened and more subdued. Vertex with reticulate microsculpture. Antennae filiform in males ( Fig. 7A ), length ratios of antennomeres I–XI 1.0: 0.3: 0.8: 0.9: 1.0: 1.0: 1.0: 1.0: 1.0: 0.8: 1.0, length to width ratios of antennomeres I–XI 3.4: 1.5: 3.9: 4.2: 4.9: 4.8: 4.8: 5.0: 5.3: 4.7: 5.7; slender in females ( Fig. 7B ), antennomeres III–X straight, length ratios of antennomeres I–XI 1.0: 0.3: 0.8: 1.0: 0.9: 0.9: 0.9: 0.9: 0.8: 0.8: 0.8, length to width ratios of antennomeres I–XI 4.0: 1.6: 4.4: 5.5: 5.9: 5.6: 5.6: 5.8: 5.1: 4.7: 5.3. Pronotum transverse, 1.4x 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, 2.1–2.2x longer than wide; disc with reticulate microsculpture, dense, coarse punctures, arranged into longitudinal rows, with distinctly longitudinal ridges between longitudinal rows of punctures. Apical margin of abdominal ventrite V in females rounded but slightly depressed near medial area ( Fig. 7I ). Tarsomeres I of front legs swollen in males ( Fig. 7J ), subparallel in females ( Fig. 7K ). Penis ( Figs 7 C–7F) extremely slender, 12.3x longer than wide; widest at apex, obliquely truncate in dorsal or ventral view, curved ventrally in lateral view, apically tapering in frontal view; parallel-sided; tectum short from apical 1/10 to 1/4, apically narrowed; medially curved in lateral view; triangular sclerites small; internal sac with one narrow, short endophallic sclerite complex, 0.4x as long as penis, composed of two sclerites, basal piece much longer (1.6x) than apical piece, apical piece with incised apex, dorsal sclerites paired, apices acute. Gonocoxae ( Fig. 7G ) elongate, slightly broadened subapically, connected from basal 1/3 to apical 1/5; 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. 7H ) longitudinal and well sclerotized; disc with several long setae at sides, and with dense, short setae along apical margin; spiculum extremely slender. Receptacle of spermatheca ( Fig. 7L ) strongly swollen; pump slender and strongly curved; proximal spermathecal duct deeply inserted into receptacle, broad and short.

Variation. The elytra of specimens collected in southern Taiwan ( Fig. 6B ) are brown ( Figs 2G, 2H ). The metallic green iridescence of the vertex, pronotum, and elytra is widely variable.

Food plants. Lauraceae : Lindera akoensis and Neolitsea parvigemma ( Fig. 1C ).

Diagnosis. Theopea collaris adults are similar to those of T. aureoviridis in color and presence of extremely coarse punctures on the elytra. They can be distinguished by the presence of longitudinal ridges on the elytra and yellowish brown vertex and pronotum with more or less metallic green iridescence ( Figs 2 D–2H) (reduced longitudinal ridges on the elytra and metallic green vertex and pronotum in T. aureoviridis ( Figs 2 A–2C)). Males of T. collaris are characterized with the obliquely truncate apex of the penis and paired dorsal sclerites ( Figs 7 C–7F) which differ from those of other species in possessing bifurcate apices of the penis and single hook-like dorsal sclerite.

Distribution. South Taiwan (Kaohsiung and Pingtung counties) below 1000 m ( Fig. 6B ). Adults appears from March to July, but most (86%) are present during April and May.

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 2. Habitus of Theopea aureoviridis Chûjô and T. collaris Kimoto. 2A. T. aureoviridis, male, dorsal view; 2B. Same, ventral view; 2C. T. aureoviridis, female, dorsal view; 2D. T. collaris, male, Tahanshan (大漢山), dorsal view; 2E. Same, ventral view; 2F. T. collaris, female, Tahanshan (大漢山), dorsal view; 2G. T. collaris, male, Kenting (墾丁), dorsal view; 2H. T. collaris, female, Nanjenshan (南仁山), dorsal view.

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 7. Diagnostic characters of Theopea collaris Kimoto. 7A. Antenna, male; 7B. Antenna, female; 7C. Penis, dorsal view; 7D. Penis, lateral view; 7E. Penis, ventral view; 7F. Apex of penis, front view; 7G Gonocoxae; 7H. Abdominal ventrite VIII; 7I. Apical margin of abdominal ventrite V, female; 7J. Tarsi of front leg, male; 7K. Tarsi of front leg, female; 7L. Spermatheca.