Antrokoreana gujoensis Masuda 2010

• Main Authors: Kato, Taiga, Nakano, Takafumi
• Format: Other/Unknown Material
• Language: unknown
• Published: 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Diplopoda; Julida; Nemasomatidae; Antrokoreana; Antrokoreana gujoensis; taiga
• Online Access: https://zenodo.org/record/8109605; https://doi.org/10.5281/zenodo.8109605

Antrokoreana gujoensis Masuda, 2010 [Japanese name: Gujo-tateune-horayasude] (Figs 2–8) Antrokoreana gujoensis Masuda, 2010: 29–32, figs 1, 2; Masuda 2021: 31 (list). Emended diagnosis. This species is clearly distinguishable from all congeners by each distal tip of the posterior gonopods elongate and rake-shaped with 3 or 4 branched-processes (bps; Fig. 7B, C) and its basal part with 2 tulip-leaf shaped processes (tsps; Fig. 7B, C) which do not reach the distal end of the posterior gonopod, differs further from its closest congener, A. takakuwai (Verhoeff, 1941), by its possession of elongate distal tips of posterior gonopods, of which the basal processes do not reach the distal end of each posterior gonopod (compared with short distal tips of posterior gonopods in A. takakuwai; Shinohara 1973). Type locality. Kumaishi-do Cave (cave entrance: ~ 35.74°N, ~ 136.99°E), Gujo, Gifu Prefecture, Japan (Masuda 2010). Material examined. In total 32 specimens collected from Gujo, Gifu Prefecture, Japan, were examined: KUZ Z4034, immature male, Kumaishi-kanko-do Cave (cave entrance: 35.74340°N, 136.99746°E; near the type locality), 2 December 2021, leg. Takafumi Nakano; KUZ Z4340 – Z4346, 7 males, KUZ Z4347 – Z4358, 12 females, and KUZ Z4359, immature female, Miyama Limestone Cave (cave entrance: 35.74971°N, 137.02514°E), 12 March 2022, leg. Taiga Kato (TK) and Kohei Kawamura (KK); KUZ Z4360, Z4361, 2 males, and KUZ Z4362 – Z4364, 3 females, Otaki Limestone Cave (cave entrance: 35.73494°N, 136.98211°E), 12 March 2022, leg. TK and KK; KUZ Z4365, male, and KUZ Z4366 – Z4370, 5 females, Gujo Limestone Cave (cave entrance: 35.75343°N, 137.04408°E), 8 May 2022, leg. KK. Description. Size and number of body rings. Males: 21.5–29.2 mm long, vertical diameter of largest body ring 1.0– 1.8 mm; body with 32–45 podous rings + 1 apodous rings + telson. Females: 22.7–33.9 mm long, vertical diameter of largest body ring 1.2–2.3 mm; body with 32–40 podous rings + 1–2 apodous rings + telson. Head (Fig. 3). Without ommatidia (Figs 2, 3A); ...