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 1. Colocasiomyia colocasiae species subgroup Colocasiomyia colocasiae species subgroup: Takenaka et al ., 2006: 84 . Diagnosis . Epandrial phragma prominent (wider than epandrial anteroventral corner), somewhat shell-shaped expansion on antero-subapical margin (ch.33-1; Fig. 10A ). Surstyli absent (ch.34-2; Fig. 10A ). Lateral pieces of subepandrial sclerite less sclerotized, small, somewhat triangular plate-like (ch.37-1; Fig. 10A ). Cercus nearly entirely oval (ch.38-1; Fig. 10A ). Phallal sheath prominently projected anterodorsad at dorsobasal corner in lateral view (ch.41-2; Fig. 11A ). Shared characters. Supracervical setae distally more or less curved, longer than inner occipital setae (ch.1-0; Fig. 3A ). Additional, interfrontal setulae on fronto-orbital plate absent (ch.2-1; Fig. 3B ). Distance between antennal sockets wider than half of socket width (ch.4-0; Fig. 3C ). Cibarial, medial sensilla in parallel rows narrower than sensilla campaniformia (ch.5-2); posterior sensilla present (ch.6-0). Anterior dorsocentral setae situated behind transverse suture (ch.7-0; Fig. 5A ). Additional dorsocentral setae on presutural area absent ( Fig. 5A ). Prescutellar acrostichal setae absent (ch.8-1; Fig. 5A ). Acrostichal setulae in 4 rows (ch.9-0; Fig. 5A ). Katepisternal setae large; posterior one as long as or longer than longest, postpronotal seta (ch.10-0; Fig. 5E ). Basal scutellar setae short; posterior tip not reaching to half of apical scutellar setae (ch.11-0; Fig. 5A ). Apical scutellar setae nearly equidistant from each other and from basal scutellar seta ( Fig. 5A ). Apically blunt, heavy, peg-like costal setae in middle row interspersed with weak, trichoid ones (ch.12-1; Fig. 6B ). Fore tarsomere I with patch covered with only minute pubescence on anterodorsal portion (ch.13-0; Fig. 7A ). Mid tibia with 2 or more apical setae (ch.15-0; Fig. 7C ). Male abdominal sternites IV and V and female sternites III–VI longer than wide (ch.17–22-1; Fig. 8C,D ). Male abdominal sternite VI not pubescent at least partly (ch.23-0; Fig. 9B–D ), with single process longer than 0.05 mm and not bearing prominent seta on apex but small setae on submedial to distal portion (ch.24-2, 25–27-0; Fig. 9B–D ). Epandrium roundish on posteroventral margin (ch.30-1), with seta as long as width of epandrium and short setae as thick as cercal setae on posteroventral portion (ch.31,32-0; Fig. 10A ). Median piece of subepandrial sclerite broad, somewhat quadrate plate (ch.36-0; Fig. 10A,B ). Cercus wider than 1/2 cercal length (ch.39-1; Fig. 10A ). Phallal sheath nearly straight, apically vertically bilobed, as thick as wide, without pubescence (ch.40-0, 42–44-1; Fig. 11A,B ). Phallapodeme more or less sclerotized, slightly oblique to axis of phallal sheath, longer than 1/2 of phallal sheath (ch.45-1, ch.46,47-0; Fig. 11A,B ). Epiproct and hypoproct pubescent (ch.48-0; Fig. 12A,B ). Oviscapt not longer than phallus (apodeme + sheath), with ovisensilla on portion occupying 1/2 or more in length of oviscapt; distal portion differentiated into more or less narrow process from basal, broad portion with dense, fine wrinkles (ch. 49–51-0; Fig. 12A ). Included species. Colocasiomyia colocasiae , C. alocasiae , C. iskandari , C. steudnerae and C . stamenicola . A total of 14 putatively new species probably belong to this subgroup ( Fartyal et al . 2013 ; Toda unpublished data; Fig. 14 ). The species-status determination and description of them will be done elsewhere.