Pseudocsikia formosana ( Ohira , 1972)

Qiu, Lu & Kundrata, Robin, 2022, Descriptions of two new flightless species of Pseudocsikia Schimmel & Platia (Coleoptera, Elateridae, Dimini) from Taiwan Island, China, with a definition of the formosana species-group, ZooKeys 1103, pp. 123-138 : 123

Pseudocsikia formosana ( Ohira, 1972)

Fig. 2A-J

Csikia formosana Ôhira, 1972: 8 (original description); Bouwer 1991: 57 (checklist); Jiang 1993: 146 (catalogue); Suzuki 1999: 120 (catalogue).

Pseudocsikia formosana ( Ôhira, 1972): Schimmel 1993: 255 (new combination); Schimmel 1996a: 204 (diagnosis); Cate et al. 2007: 186 (catalogue); Kundrata et al. 2018: 66 (catalogue).

Type material.

Holotype of Csikia formosana Ôhira, 1972, male, "TAIWAN (C.): Bu-kai. 900 m. VI.15-34. Gressitt", " Csikia formosana Ôhira, 1972 Det H Ohira 1972", “HOLOTYPE”, "No. 9486", "Examined. Det. W. Suzuki, 1982" (BPBM). One paratype of Csikia formosana Ôhira, 1972, sex unknown, "TAIWAN (C.): Bu-kai. 900 m. VI-15-34. Gressitt", " Csikia formosana Ohira, 1972 Det H Ohira 1972", “PARATYPE” (BPBM).

Diagnosis.

(based on Ôhira 1972 and the figures of holotype and one paratype provided by BPBM). Body length 4.0 mm, width 1.7 mm (based on holotype; see Ôhira 1972). Body reddish brown (examined paratype darker than holotype; Fig. 2A-C, I ), outer margins of pronotum and elytra, underside, and legs paler. Antenna exceeding posterior angle of pronotum by about apical two antennomeres ( Ôhira 1972). Antennomere II slightly shorter than antennomere III ( Ôhira 1972). Punctures on pronotum of moderate size, intervals between punctures mostly equal 3-5 puncture diameters, anterior protrusion of pronotum with apex laterad of center (Fig. 2E, F ). Posterior angle (Fig. 2G ) of pronotum long, straight and robust, apex blunt, inner margin with obtuse protrusion subapically.

Aedeagus with robust median lobe, twice as long as paramere; with large acute lateral processes near midlength, apex rectangular, with large subapical spines laterally (Fig. 2H ) (needle-like ventral sclerite not mentioned in Ôhira 1972 and not observable in this study). Paramere stout, reaching half length of median lobe; apex rounded, slightly outwards. Phallobase subquadrate, margins thickened, medially with longitudinal thickened line, basal angles rounded (based on Ôhira 1972: fig. 3).

Distribution.

China: Taiwan (Nantou).

Checklist of Pseudocsikia species from China, with notes on their type localities

Pseudocsikia formosana ( Ôhira, 1972)

Chinese common name: 台湾伪斯叩甲.

Type locality: “Bukai” ( Ôhira 1972).

Note: Bukai is an old name of Fatyu [法治] (or Wuchieh [武界]) ( Chu and Yamanaka 1973), Ren’ai township [仁爱乡], Nantou County [南投县], Taiwan.

Pseudocsikia gaoligongshana Schimmel, 1996

Chinese common name: 高黎贡伪斯叩甲.

Type locality: "Yunnan, Gaoligongshan, 100 km westlich von Baoshan [100 km W of Baoshan]" ( Schimmel 1996b).

Note: Gaoligongshan [高黎贡山] is an extensive mountain range lying on the border of Yunnan, China and Myanmar; the exact locality information of the holotype is unknown. However, according to the original paper, the holotype was collected 100 km west of Baoshan, which is near Tengchong.

Pseudocsikia turnai Schimmel, 2006

Chinese common name: 图氏伪斯叩甲.

Type locality: "China: Hubei-Provinz, 30 km nordostlich von Hefeng, Mulinzi [30 km NE of Hefeng, Mulinzi]" ( Schimmel 2006).

Note: Mulinzi [木林子] is a nature reserve in Hefeng County [鹤峰县], Enshi City [恩施市], Hubei.

Pseudocsikia choui Qiu & Kundrata, sp. nov.

Chinese common name: 周氏伪斯叩甲.

Type locality: Erwanping, Mount Alishan, Chiayi County, Taiwan, 2000 m (this work).

Pseudocsikia chanjuan Qiu & Kundrata, sp. nov.

Chinese common name: 婵娟伪斯叩甲.

Type locality: Mount Taimalishan, Taitung County, Taiwan, 1300 m (this work).

Figures

Figure 2. Habitus and characters of Pseudocsikia formosana (Ohira, 1972) A-H male holotype A habitus, dorsal view B habitus, ventral view C habitus, lateral view D labels E anterior protrusion of pronotum (indicated by an arrow), dorsal view F anterior protrusion of hypomeron (indicated by an arrow), ventral view G posterior angle of pronotum, dorsal view H abdominal tip, ventral view (arrow indicates the apex of median lobe) I, J paratype of an unknown sex I habitus, dorsal view J labels. Scale bars: 1.0 mm (A-C, I); E-H not to scale. All photos provided by Jeremy Frank (BPBM).