Otostigmus politus Karsch, 1881

Vu, Ha T., Nguyen, Hung D., Le, Son X., Eguchi, Katsuyuki, Nguyen, Anh D. & Tran, Binh T. T., 2020, A review and notes on the phylogenetic relationship of the centipede genus Otostigmus Porat, 1876 (Chilopoda: Scolopendromorpha: Scolopendridae) from Vietnam, Zootaxa 4808 (3), pp. 401-438 : 420

Otostigmus politus Karsch, 1881

( Figs. 20–23 )

Otostigmus politus Karsch, 1881: 62 ; Chamberlin 1920: 13; Attems 1930: 150; Schileyko 1992: 7; Schileyko 1995: 80; Schileyko 2001: 428; Lewis 2001: 31, figs 59–68; Lewis 2003: 195; Schileyko 2007: 80, fig. 3.

Otostigmus completus Chamberlin, 1920: 15 , synonymized by Lewis (2001).

Otostigmus frigidus Verhoeff, 1942: 186 , synonymized by Lewis (2003).

Material examined. HOA BINH Province: 3 specimens (IEBR-Chi 080, 081, 084) Xuan Nha Natural Reserve , natural forests, 20.7108N– 104.6869E, elevation of 673–761m, 14 May–June 2018, coll. Nguyen D. Hung.

Diagnosis. Body with 21 leg-bearing segments. Spiracles oval-shaped ( Fig. 21C ). Antennae with 17 antennomeres including first three glabrous dorsally ( Fig. 20 ). Paramedian grooves present on both sternites and tergites 5–20 ( Fig. 21 A–B). Coxopleural process very short, conical, nearly covered with pores, and with 2–3 apical spines ( Figs 21D , 22A ). Spines on prefemur of the ultimate legs arranged in three rows, each with 3–5 spines ( Fig. 22 B–C).

Previous records in Vietnam. HOA BINH ( Schileyko 1992, 2007).

Distribution. The species has also been reported from China, Myanmar, Cambodia, and Korea ( Attems 1930; Schileyko 2007).

Remarks. The specimens agree with the descriptions of Schikeyko (1995, 2007) from material collected from Mai Chau (Hoa Binh Province). The species has been recorded only in Hoa Binh Province ( Fig. 23 ).

Figures

FIGURE 20. Otostigmus politus Karsch, 1881 (IEBR-Chi 084). Antenna and anterior part of body, dorsal view (A). Head and basal antennomeres, dorsal view (B). Ocelli, lateral view (C). Head, ventral view (D).

FIGURE 21. Otostigmus politus Karsch, 1881 (IEBR-Chi 084). Sternites 9–10 (A). Tergites 9–10 (B). Spiracle 9th (C). Last segment, dorsal view (D).

FIGURE 22. Otostigmus politus Karsch, 1881 (IEBR-Chi 084). Coxopleural processes, ventral view (A). Right ultimate leg, mesal view (B). Prefemur of the ultimate leg, ventral view (C).

FIGURE 23. Distribution of Otostigmus politus Karsch, 1881 in Vietnam