Tapiena?incisa Karny, 1923

(Figs 32, 33)

Tapiena incisa Karny, 1923: 141 — Tan, Liu & Artchawakom, 2015: 42, 43 (key); Tan, Japir & Chung, 2019: 328 (see remarks below)

Material examined. EAST MALAYSIA: Sabah State • 1♂ 1♀; Mount Trus Madi, Trusmadi Entomology Camp; N5.44174, E116.45074, 1189.0± 5.2 m.a.s.l.; 31 October 2023, 19h58–20h23; attracted to light trap at ridge; coll. M.K. Tan, J.L. Yukang & A.Y.C. Chung; SBH.23.14, 28 (FRC) • 1♀; Mount Trus Madi, Trusmadi Entomology Camp; N5.44307, E116.45155, 1192.0± 5.6 m.a.s.l.; 31 October 2023, 20h33–20h49; attracted to light trap near camp; coll. M.K. Tan, J.L. Yukang & A.Y.C. Chung; SBH.23.36 (FRC)

Remarks. Our specimen resembles most Tapiena incisa Karny, 1923 previously described from Sarawak, particularly by the shape of the male cercus (Fig. 33C). However, our male specimen also differs in an important character: the male tenth abdominal tergite is truncated excised in the middle (and not triangularly excised) (Fig. 33D). This species is also similar to Tapiena paraincisa Tan & Wahab, 2018 from Brunei Darussalam (not too far from Mount Trus Madi) by its stout body, red (or purple) fore femora and tympanal area (Fig. 32) and stridulatory areas on both tegmina (Figs 33A, 33B), but also differs distinctly by the cercus at its apex broad and flattened (instead of tapering into two tooth-like processes) (Fig. 33C), the tenth abdominal tergite being broadly and truncated and excised in middle (instead of narrowly excised) (Fig. 33D) and the subgenital plate having much shorter apical lobes but longer styli (Fig. 33E) (see also Tan & Wahab, 2018a).

Based on new material from Sabah, it appears that Tan et al. (2019) may have misidentified the Tapiena reported in Lungmanis (near Lahad Datu in Sabah).

Distribution. Borneo (Sabah, Sarawak)

Type locality. EAST MALAYSIA: Sarawak: Baram River: Gunung Tamabo