10) Colocasiomyia sarawakana Toda & Yafuso, sp. nov.

(Figs 4C, 9M, 15J, 24A,B,D,F,H–J,L,N,P,R)

Colocasiomyia sp.3 aff. diconica: Sultana et al., 2006: 694; Toda & Lakim, 2011: 263; Takano et al., 2011: 26.

Diagnosis. Additional dorsocentral setae on presutural area present (Fig. 24B).A pair of processes on male abdominal sternite VI nearly straight (Fig. 9M). Epandrium roundish on posteroventral margin; anteroventral elongation broader than cercus in lateral view (Fig. 24H). Female abdominal sternite VI longer than wide (Fig. 24F). Oviscapt narrower than hypoproct, apically somewhat pointed in lateral view (Fig. 24L).

Description (♂ and ♀). Head. Supralateral setae outside prementum 3–4 per side.

Thorax. Basal scutellar setae long; posterior tip beyond half of apical scutellar setae.

Legs. Mid tibia with 2–3 apical, stout setae.

Abdomen. Female sternite IV wider than long (Fig. 24F).

Male terminalia. Epandrium with 9–10 setae on posteroventral portion (Fig. 24H). Median piece of subepandrial sclerite broad, somewhat quadrate plate; lateral pieces absent. Cercus with 37–38 setae, extended below, apically forming somewhat broad lobe with many small setae (Fig. 24H).

Female terminalia. Oviscapt with approximately 12 ovisensilla (Fig. 24L).

Indices (range of 10♂ and 10♀): FW/HW = 0.57–0.63, ch/o = 0.31–0.53, prorb = 0.81–1.07, rcorb = 0.20–0.60, vb = 0.20–0.36, dcl = 0.54–0.74, sctl = 0.63–0.89, sterno = 0.43–0.80, orbito = 0.36–0.69, dcp = 0.78–1.25, sctlp = 1.10–1.67, C = 2.12–2.53, 4c = 0.88–1.01, 4v = 1.44–2.11, 5x = 0.81–1.25, ac = 2.06–2.62, M = 0.31–0.50.

Holotype. ♂ (RDID), “ Kuching, Sarawak, Malaysia, 27.xi.2004, ex Alocasia macrorrhizos, Lucy Chong & K.T. Takano ”.

Paratypes. Malaysia: 11♂, 12♀, same data as the holotype (RDID); 3♂, 3♀, Poring, Mt. Kinabalu, Sabah, 6°02’46”N 116°42’09”E, 29.vii.2004, ex Alocasia scabriscula, K.T. Takano leg. (BORN, KPSP, SEHU) .

Distribution. Borneo (Sarawak, Sabah, West Kalimantan).

Etymology. Referring to the type locality.