Phylogeny, taxonomy and flower-breeding ecology of the Colocasiomyia cristata species group (Diptera: Drosophilidae), with descriptions of ten new species Author Takano, Kohei Takenaka Author Gao, Jian-Jun Author Hu, Yao-Guang Author Li, Nan-Nan Author Yafuso, Masako Author Suwito, Awit Author Repin, Rimi Author Pungga, Runi Anak Sylvester Author Meleng, Paulus Ak Author Kaliang, Clement Het Author Chong, Lucy Author Toda, Masanori J. text Zootaxa 2021 2021-12-08 5079 1 1 70 journal article 2931 10.11646/zootaxa.5079.1.1 010695ef-a142-42ad-81d7-2e7ed1f7e89e 1175-5326 5766402 2B118B81-7353-4A2C-A892-5466DFC83230 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 ). FIGURE 27. Colocasiomyia diconica (Toda & Okada) (♂ and ♀ from Taykoa, Bangkok, Thailand). A, Male abdominal sternites (ventral view); B, female abdominal sternites (ventral view); C, periphallic organs (lateral view); D, phallic organs (lateral view); E, ditto (ventral view); F, female terminalia (lateral view). Scale bars: 0.1 mm. 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 ?.