Colocasiomyia sumatrana Toda & Takano 2021, sp. nov.
Creators: name: Takano, Kohei Takenaka
name: Gao, Jian-Jun
name: Hu, Yao-Guang
name: Li, Nan-Nan
name: Yafuso, Masako
name: Suwito, Awit
name: Repin, Rimi
name: Pungga, Runi Anak Sylvester
name: Meleng, Paulus Ak
name: Kaliang, Clement Het
name: Chong, Lucy
name: Toda, Masanori J.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Drosophilidae
Colocasiomyia
Colocasiomyia sumatrana

description: 14) Colocasiomyia sumatrana Toda & Takano, sp. nov.
(Figs 9Q, 15M,N, 28)
Colocasiomyia sp.5 aff. diconica: Sultana et al., 2006: 694.
Diagnosis. All coxae and femora entirely yellow (Fig. 15M,N). A pair of processes on male abdominal sternite VI longer than 0.1 mm, proximally parallel, distally divergent (Fig. 9Q).
Description (♂ and ♀; not repeating characters common to C. xenalocasiae). Head. Supracervical setae 9–11 per side. Eye with fine, sparse interfacetal setulae. Cibarial, medial sensilla 2–3 per side; posterior sensillum 1 per side. Supralateral seta outside prementum 1 per side.
Thorax. Prescutellar acrostichal setae absent. Apical scutellar setae nearer to each other than to basal scutellar seta.
Abdomen. Male tergites: I and II medially pale grayish yellow, laterally dark grayish brown; III–VI nearly entirely dark grayish brown (Fig. 15M). Female tergites variable in color: nearly entirely pale yellow or each tergite with grayish brown to dark gray bands on sublateral portions (Fig. 15N). Male abdominal sternites III and IV longer than wide, rectangular (Fig. 28A). Female abdominal sternites VI longer than wide (Fig. 28B).
Male terminalia. Epandrium pubescent except for anterior and ventral margins and anteroventral elongation, with approximately 3 setae on lateral to dorsal portion and 16–17 setae on ventral portion of each side (Fig. 28C). Surstylus with 1–3 recurved, thick, trichoid setae apically and 1–2 minute setae subapically (Fig. 28C). Cercus pubescent except for anterior margin and ventral 2/5, with approximately 25–27 setae (Fig. 28C).
Female terminalia. Oviscapt about 5 times as long as wide, slightly curved downward, with 19–20 ovisensilla (Fig. 28F).
Indices (range of 10♂ and 10♀ paratypes): FW/HW = 0.55–0.61, ch/o = 0.42–0.58, prorb = 0.59–0.83, rcorb = 0.13–0.27, vb = 0.31–0.53, dcl = 0.52–0.67, sctl = 0.59–0.77, sterno = 0.40–0.63, orbito = 0.43–0.70, dcp = 0.90–1.13, sctlp = 0.90–1.24, C = 1.97–2.59, 4c = 0.90–1.25, 4v = 1.72–2.03, 5x = 1.27–1.73, ac = 2.34–3.60, M = 0.49–0.65, C3F = 0.09–0.29.
Holotype. ♂ (MZB), “ Batang Anai, Padang Panjang, West Sumatra, Indonesia, 150 m a.s.l., 5.i.2004, ex Colocasia esculenta, K.T. Takano ”.
Paratypes. Indonesia: 14♂, 14♀, same data as the holotype (MZB, SEHU).
Distribution. Sumatra (West Sumatra).
Remarks. In the cladogram (Fig. 13), this species and the foregoing species C. diconica formed a clade (BP = 75) supported by two synapomorphies: eye with fine, sparse interfacetal setulae (ch.3-0) and male abdominal sternite VI with a pair of processes proximally parallel but distally divergent (ch.29-1).
Etymology. Referring to the type locality.
description: Published as part of Takano, Kohei Takenaka, Gao, Jian-Jun, Hu, Yao-Guang, Li, Nan-Nan, Yafuso, Masako, Suwito, Awit, Repin, Rimi, Pungga, Runi Anak Sylvester, Meleng, Paulus Ak, Kaliang, Clement Het, Chong, Lucy & Toda, Masanori J., 2021, Phylogeny, taxonomy and flower-breeding ecology of the Colocasiomyia cristata species group (Diptera: Drosophilidae), with descriptions of ten new species, pp. 1-70 in Zootaxa 5079 (1) on pages 44-45, DOI: 10.11646/zootaxa.5079.1.1, http://zenodo.org/record/5766402