Therates biserratus Tan, Mo, Liang, 1991

Matalin, Andrey V. & Wiesner, Jürgen, 2023, Revision of the Therates fruhstorferi complex (Coleoptera, Cicindelidae), Zootaxa 5256 (5), pp. 401-433 : 414-415

Therates biserratus Tan, Mo, Liang, 1991 , stat. rest.

Figs 22–24 , 44 , 73, 74 , 105, 106 , 168 .

Therates biserratus Tan et al. 1991: 243 (type locality— China, Guizhou Province, Jiangkou County).

Therates biserratus Tan et al. 1991 — Tan 1992: 341, 1993: 257; Lei & Zhou 1998: 63; Lorenz 1998: 38, 2005: 116.

Therates fruhstorferi fruhstorferi W. Horn, 1902 — Shook & Wu 2007: 68; Wu 2011: 36; Putchkov & Matalin 2017: 245; Wiesner 2020: 95.

Type material. PARATYPE of Therates biserratus Tan, Mo, Liang, 1991 , ♀ (digital photo by H. Liang)—“ OiNJNjũ RDZÜƑ 850m Ẍøƙ ” [hand-written white label], “ IOZ (E) 1437429” [printed white label], “ Therates biserratus sp.n., AEƜflẓớaeẅ, 1987” [hand-written and printed white label] ( IOZ) .

Additional material. CHINA, Guizhou Prov.: 1♂—CH– Guizhou NE, 20 km NW of Jiangkou, Fanjing ShanKuaichang , 27. V –3. VI.1995, leg. E. Jendek & O. Šauša ( JW).

References. CHINA, Guizhou Prov.: Shiqian County, Jinxing vill., 900 m ( Tan 1993 —as T. fruhstorferi ); China, Hubei Prov., Hefeng County, 1100–1400 m ( Tan 1993; Lei & Zhou 1998); China, Hubei Prov., Xuanen County, 1200 m ( Tan 1993).

Diagnosis. From related T. vitalisi , T. sauteri and T. hunanensis sp. n. this species is best distinguished by smooth orbital plates, by the shape of antennomeres 9–11 ( Fig. 44 vs. Figs 42, 43, 45–49 ), and by the shape of aedeagus ( Fig. 168 vs. Figs 152–167, 169–171, 173, 174 ). Moreover from T. sauteri and T. hunanensis sp. n. this species is distinguished by yellow spot of labrum distinctly separated from central apical teeth ( Figs 73, 74 vs. Figs 75–80 ), and from T. hunnanensis sp. n. —by entirely black hind tibia and tarsi ( Figs 22, 24 vs. Fig. 25 ) as well as by narrow apical dot not extending to the suture ( Figs 22, 24 , 105, 106 vs. Figs 25 , 107, 108 ).

Redescription. TL (according to the original description) = 13.5 mm in male, 14.5 mm in female; TL (studied specimen) = 11.1 mm in male.

Head black with distinct blue-violet reflection; orbital plates smooth; frons plain and semi-circular (see above), slightly downward anteriorly (see at side), frontal sulci rather deep, slightly convergent in anterior 2/3; occiput slightly impressed anteriorly. Mandibles brown underside, pale topside with brown teeth and apical molar. Labial palpi pale with brown apical and basal palpomeres; maxillary palpi brown except pale palpomere 2. Antennae barely extend posteriorly to the shoulders, scape light-brown on anterior side and brown-black on posterior side; antennomere 2 black-brown; antennomeres 3–5 brown with light violet lustre and light brown apices, antennomeres 9–11 short, broad and flattened, anterior lower margins of antennomeres 9 and 10 in males sharply serrated, antennomere 11 very wide and sharply abrupt anteriorly ( Fig. 44 ); in female barely dilated and protruding. Labrum in male as long as wide, LW/LL—1.03, with straight lateral margins, black-brown with medium-sized yellow apical spot narrowly separated from central black apical teeth ( Figs 73, 74 ).

Pronotum shiny black with bright blue-violet reflection; slightly transverse, PW/PL = 1.1 (PW = 2.2 mm, PL = 2.0 mm), apical lobe practically equal wide throughout; thorax black with distinct violet reflection.

Fore femora pale along anterolateral margins and black-brown with violet lustre along posterior margin; middle femora pale in basal third, yellow-brown on posterior side and black-brown with violet lustre in 2/3 apical part on anterior side; hind femora black with violet reflection in apical 2/3 and pale in basal third; fore and middle tibiae light brown on dorsal side and dark brown on ventral side with brown-black apices and light violet tinge; hind tibiae black with violet lustre; tarsi brown-black with violet tinge; HTbL/HTaL = 1.2.

Elytra black with bright violet-purple reflection; indistinctly divergent toward apex, EL/EW = 1.87 (EL = 7.1 mm, EW = 3.8 mm); punctuation of elytral disc deep and regular between basal humps and central dot, then shallow and sparse, in apical quarter indistinct and irregular; scutellum black-brown; apical margin shortly cut. Elytral pattern presented by four isolated pale spots: triangular basal portion of humeral lunule, distinct basal dot separated from the suture, wide prolonged and distinctly oblique central dot as well as narrow not extend the suture apical dot ( Figs 22, 24 , 105, 106 ).

Aedeagus with very short slightly curved blunt apex and short lateral carinae ( Fig. 168 ); AL = 2.5 mm; EL/AL = 2.84.

Distribution. CHINA: Guizhou Province (Jiangkou and Yinjiang Counties) ( Fig. 184 ).

Figures

FIGURES 184. Distribution of Therates spp.: dark blue solid circle—T. vitalisi vitalisi; dark blue half-solid circle—T. vitalisi ida; lilac solid circle—T. hunnanensis sp. n.; orange solid circle—T. biserratus; pink solid circle—T. motoensis; red open circle—T. sauteri; red solid quadrat—T. fruhstorferi fruhstorferi; red half-solid quadrat—T. fruhstorferi australis ssp. n.; blue solid quadrat—T. ziyardamensis sp. n.; green solid quadrat—T. pseudovitalisi sp. n. (nominotypical subspecies); green halfsolid quadrat—T. pseudovitalisi tibetana ssp. n.; L in the symbols—according only to the literature sources. Map source— https://commons.wikimedia.org/wiki/File:East_Asia_topographic_map.png.

FIGURES 15–28. Therates spp., habitus: 15–18—T. vitalisi vitalisi (15, 16—Vietnam, Lao Cai; 17—Vietnam, Fan Si Pan Mnt; 18—Vietnam, Sa Pa); 19–21—T. vitalisi ida (China, Kuatun); 22–24—T. biserratus (22, 23—China, Yinjiang County; 24—China, Fanjing Shan-Kuaichang); 25—T. hunnanensis sp. n. (China, Shunhuangshan); 26–28—T. sauteri (26, 27—China, Tiawan, Taihorin; 28—China, Taiwan, Ilan Hsien); 17–20, 24–28—males; 15, 16, 21–23 —females; 15, 16, 19, 20, 25— holotypes; 22, 23—paratype; 26, 27—lectotype; 15, 17–19, 21, 22, 24–26, 28—habitus; 16, 20, 23, 27—type labels.

FIGURES 29–49. Therates spp., left antennomeres 6–11: 29–32—T. fruhstorferi fruhstorferi (29, 30 – Vietnam, Na Hang; 31, 32 – Laos, Ban Nape); 33, 34—T. fruhstorferi australis ssp. n. (33—Vietnam, Kon Ka Kinh N.P.; 34—Vietnam, Pak Khe River); 35—T. ziyardamensis sp. n. (Myanmar, Zi Yar Dam); 36, 37—T. pseudovitalisi pseudovitalisi ssp. n. (36—Laos, Ban Song Cha; 37—Laos, Ban Bun Neua); 38, 39—T. pseudovitalisi tibetana ssp. nov. (China, Xia-Cha-Yu); 40, 41—T. motoensis (China, Hanmi); 42, 43—T. hunnanensis sp. n. (China, Shunhuangshan); 44—T. biserratus (China, Fanjing Shan-Kuaichang); 45, 46—T. vitalisi vitalisi (Vietnam, Xuan Son N.P.); 47—T. vitalisi ida (China, Fukien); 48, 49—T. sauteri (48—China, Taiwan, Taipei Hsien; 49—China, Taiwan, Ilan Hsien); 30, 32, 34, 35, 37, 39, 41, 43, 44, 46, 49—males; 29, 31, 33, 36, 38, 40, 42, 45, 47, 48—females; 33, 35, 37, 39, 41—holotypes; 34, 36, 38, 42—paratypes. Without scales.

FIGURES 73–80. Therates spp. labrum: 73, 74—T. biserratus (73—China, Yinjiang County; 74—China, Fanjing Shan- Kuaichang); 75, 76—T. hunnanensis sp. n. (China, Shunhuangshan); 77–80—T. sauteri (77, 78 —China, Taiwan, Taihorin; 79—China, Taiwan, Ilan Hsien; 80—China, Taiwan, Taipei Hsien); 74, 75, 77, 79—males; 73, 76, 78, 80—females; 75— holotype; 73, 76—paratype; 77, 78—paralectotypes.

FIGURES 99–114. Therates spp., left elytron: 99–102—T. vitalisi vitalisi (99 —Vietnam, Lao Cai; 100, 101—Vietnam, Sa Pa; 102—Laos, 15 km NW Louang Namtha); 103, 104—T. vitalisi ida (China, Kuatun); 105, 106—T. biserratus (105— China, Yinjiang County; 106—China, Fanjing Shan-Kuaichang); 107, 108—T. hunnanensis sp. n. (China, Shunhuangshan); 109–114—T. sauteri (109, 110, 112, 113—China, Taiwan, Taihorin; 111—China, Taiwan, Ilan Hsien; 114—China, Taiwan, Taipei Hsien); 100, 103, 106, 107, 109–111—males; 99, 101, 102, 104, 105, 108, 112–114—females; 99, 103, 107— holotypes; 105, 108—paratypes; 109, 110, 112, 113—paralectotypes

FIGURES 152–174. Therates spp., aedeagus: 152–166—T. vitalisi vitalisi (152, 153—Vietnam, Xuan Son N.P.; 154— Vietnam, Sa Pa; 155, 156—Laos, Ban Nape—Kaev Nua pass; 157–163—Laos, 15–20 km NW Louang Namtha; 164, 165— Laos, 8 km NE Ban Nape; 166—Laos, Thong Khan); 167—T. vitalisi ida (China, Kuatun); 168—T. biserratus (China, Fanjing Shan-Kuaichang); 169–171—T. hunnanensis sp. n. (China, Shunhuangshan); 172—T. motoensis (China, Hanmi); 173, 174—T. sauteri (173—China, Taiwan, Taihorin; 174—China, Taiwan, Ilan Hsien); 167, 169—holotypes; 170, 171—paratypes; 173— lectotype; 152—dorsal view; 153–174—left lateral view; ac—apical carinae; sp—spring; fl—flagellum. Scale bars in mm.