13) Colocasiomyia diconica (Toda & Okada, 1983)

(Figs 5D, 9P, 15L, 27)

Drosophilella diconica Toda & Okada, 1983: 172 .

Colocasiomyia diconica: Okada, 1988: 36 .

Diagnosis. Acrostichal setulae in 2 rows (Fig. 5D). A pair of processes on male abdominal sternite VI shorter than 0.1 mm, proximally parallel, distally divergent (Fig. 9P).

Supplementary description (not repeating characters common to C. xenalocasiae). Supracervical setae 3–5 per side. Eye with fine, sparse interfacetal setulae. Cibarial, medial sensilla 2–3 per side; posterior sensilla 1–2 per side. Supralateral seta outside prementum 1 per side. Prescutellar acrostichal setae absent (Fig. 5D). Costal setae in middle row all weak, trichoid. Mid tibia with approximately 2 apical, stout setae. Male abdominal sternite III longer than wide, rectangular; IV as wide as long (Fig. 27A). Epandrium pubescent except for anterior margin and anteroventral elongation, posteroventrally less extended, with 13–14 setae on ventral portion of each side (Fig. 27C). Surstylus long, distally tapering, apically truncate plate with 3 recurved teeth apically and 1 minute seta subapically (Fig. 27C). Cercus pubescent except for anterior margin and ventral 1/4 (Fig. 27C). Oviscapt about 4 times as long as wide, with 11–14 ovisensilla (Fig. 27F).

Specimens examined. Thailand: 1♂, 2♀, near Chao Phraya River, Taykoa, Bangkok, 14°07’25”N 100°31’18”E, 16.i.2020, ex Colocasia esculenta, P.J. Matthews leg. (SEHU) . Malaysia: 28♂, 37♀, Ulu Gombak, Selangor, 8.xii.2013, ex C. esculenta, M.J. Toda leg. (SEHU, UMKL) ; 12♂, 10♀, Sampadi, Sarawak, 9.viii.2012, ex C. esculenta, A.M. Paulus & K.T. Takano leg. (RDID) .

Distribution. Borneo (Sabah, Sarawak *, West Kalimantan), Sulawesi?, Java, Sumatra, Peninsular Malaysia *, Vietnam, Thailand, Myanmar, Sri Lanka?.