Phylogenetic classification and palm-inflorescence anthophily of the Colocasiomyia zeylanica species group (Diptera: Drosophilidae), with descriptions of five new species Author Zhang, Guang Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology (Institute of Biodiversity), Yunnan University, Kunming, 650091 China & Guizhou Provincial Museum, Guiyang, 550081 China Author Gao, Jian-Jun 0000-0003-4636-2130 Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology (Institute of Biodiversity), Yunnan University, Kunming, 650091 China & gaojj @ ynu. edu. cn; https: // orcid. org / 0000 - 0003 - 4636 - 2130 gaojj@ynu.edu.cn Author Takano, Kohei Takenaka Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060 - 0810, Japan & Research Institute for Humanity and Nature, Kyoto 603 - 8047, Japan Author Yafuso, Masako 0000-0001-9737-7792 Uema 1 - 2 - 21, Naha, Okinawa 902 - 0073, Japan. yafusom @ juno. ocn. ne. jp; https: // orcid. org / 0000 - 0001 - 9737 - 7792 yafusom@juno.ocn.ne.jp Author Suwito, Awit 0000-0003-2600-2488 Zoology Division (Museum Zoologicum Bogoriense), Research Center for Biology-LIPI, Jl. Raya Jakarta-Bogor Km. 46, Cibinong 16911, West Java, Indonesia. sungaicola @ gmail. com; https: // orcid. org / 0000 - 0003 - 2600 - 2488 sungaicola@gmail.com Author Meleng, Paulus Ak 0000-0003-3777-0597 Research Development and Innovation Division, Forest Department Sarawak, KM 10, Jalan Datuk Amar Kalong Ningkan, 93250, Kuching, Sarawak, Malaysia. paulusm @ sarawak. gov. my; https: // orcid. org / 0000 - 0003 - 3777 - 0597 paulusm@sarawak.gov.my Author Toda, Masanori J. Hokkaido University Museum, Hokkaido University, Sapporo 060 - 0810, Japan text Zootaxa 2023 2023-05-05 5278 2 201 238 http://dx.doi.org/10.11646/zootaxa.5278.2.1 journal article 57601 10.11646/zootaxa.5278.2.1 2d4bcf32-8354-41cd-a2fd-05e47458c178 1175-5326 7905995 697AC989-141D-4A89-8F02-5A4644E303EA 2) Colocasiomyia besaris Yafuso & Toda , sp. nov. ( Figs 2–12B , 14B ) Colocasiomyia sp.3 aff. nepalensis : Sultana et al. , 2006: 694 . Diagnosis. Surstylus with 8–10 stout, longer, peg-like teeth; dorsalmost one thickest (Fig. 11-1B 2 ). Pregonites apically pointed, smooth on ventral margin (Fig. 11-1B 4 ). Epigynium with 26–28 small sensilla per side near lower posterior margin ( Fig. 12B 1 ). Distal, narrow portion of hypogynial valve longer than basal, broad portion ( Fig. 12B ). Description (♁ and ♀ ). Head. Antennal pedicel blackish brown; first flagellomere approximately 1.6 times as long as pedicel; arista approximately 2.1 times as long as first flagellomere ( Fig. 3B ). Distance between antennal scapes as wide as scape diameter ( Fig. 2B 2 ). Facial carina wider than 1st flagellomere ( Fig. 2B 2 ). Supracervical setae 8–10 and postoculars 18–20 per side ( Fig. 4A ). Cibarial projections at anterolateral corners as long as width of anterior margin; medial sensilla approximately 2–3 per side ( Fig. 5B 2 ). Prementum and neighboring lateral membrane with 9–10 setae per side ( Fig. 5B 2 ). Labellum with 11 pseudotracheae per side ( Fig. 5B 1 ). Thorax. Two katepisternal, prominent setae longer than acrostichal setulae ( Fig. 7B ). Legs grayish brown, except for all tarsi pale grayish yellow ( Fig. 14B ). Fore tarsomere I slightly longer than tarsomeres II and III combined; mid I as long as II+III+IV; hind I slightly longer than II+III+IV ( Fig. 9B ). Fore tarsomere II with 1 large and 1 small pegs; latter 1/3 as long as former ( Fig. 9B 1 ). Abdomen. Tergites blackish brown ( Fig. 14B ). Male sternites III and IV as wide as long; V+VI distally deeply bilobed ( Fig. 10B 1 ). Female sternites III–V as wide as long; VI wider than long; VII wider than long plate bilobed in distal half ( Fig. 10B 2 ). Female tergite VII mid-dorsally separated into 2 lateral plates. Male terminalia. Epandrium with 2–4 long setae only on lateral to ventral portion (Fig. 11-1B 1 ). Cercus nearly entirely pubescent except for roundish, ventral flap, with approximately 40 setae (Fig. 11-1B 1 ). Phallal sheath partly pubescent (Fig. 11-1B 4 ). Female terminalia. Perineal membrane with patch of dense, distinct warts. Measurements ( holotype /range in 2♁ and 1♀ paratypes , in mm): BL = 1.51/♁ 1.35–1.55, ♀ 1.70; ThL = 0.67/♁ 0.72–0.73, ♀ 0.72; WL = 1.39/♁ 1.46–1.55, ♀ 1.47; WW = 0.66/♁ 0.72, ♀ 0.72. Indices ( holotype /range in 2♁ and 1♀ , or less if noted, paratypes , in ratio): FW/HW = 0.54/0.53–0.56; ch/o = 0.38/0.32–0.40; prorb = 0.83/0.82–0.97; rcorb = 0.30/0.25–0.32; vb = 0.21/0.24–0.29; dcl = 0.51/0.52–0.54 (1♁ and 1♀ ); presctl = 0.30/0.35–0.41; sctl = 0.75/0.71–0.73 (1♁ and 1♀ ); sterno = 1.07/1.28–1.42; orbito = 0.35/0.38–0.45; dcp = 0.58/0.68–0.77; sctlp = 0.81/0.91–1.07; C = 2.10/1.82–2.18; 4c = 1.32/1.22–1.39; 4v = 2.54/2.33–2.61; 5x = 2.78/1.82–3.23; ac = 2.50/2.36–2.87; M = 0.99/0.91–1.02; C3F = 0.41/0.46–0.54. Holotype . ♁ ( MZB ), “ Cibodas , West Java , Indonesia , 12.xii.2004 , K. T . Takano / ex inflorescence of Pinanga coronata ”. Paratypes . Indonesia : 12♁, 4♀ , same data as the holotype ( MZB , SEHU ); 2♁ (#05200–01) , 1♀ (#05226), same data as the holotype except for 24.xii.2003 ( KIZ ) . Distribution. Indonesia ( West Java ). Remarks. This species resembles C. pinangae sp. nov. , but can be distinguished from it by the diagnostic characters. Etymology. The specific name derives from “besar” (meaning “large”) of Indonesian, referring to its larger body size among the members of the zeylanica group.