Colocasiomyia sumatrana Toda & Takano, 2021

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, Zootaxa 5079 (1), pp. 1-70 : 44-45

publication ID	https://doi.org/ 10.11646/zootaxa.5079.1.1
publication LSID	lsid:zoobank.org:pub:2B118B81-7353-4A2C-A892-5466DFC83230
DOI	https://doi.org/10.5281/zenodo.5786195
persistent identifier	https://treatment.plazi.org/id/03D75C2D-4541-2E13-FF52-6092B1D2B1B9
treatment provided by	Plazi
scientific name	Colocasiomyia sumatrana Toda & Takano
status	sp. nov.

Treatment

14) Colocasiomyia sumatrana Toda & Takano View in CoL , sp. nov.

( Figs 9Q View FIGURE 9 , 15M,N View FIGURE 15 , 28 View FIGURE 28 )

Colocasiomyia sp.5 aff. diconica: Sultana et al., 2006: 694 .

Diagnosis. All coxae and femora entirely yellow ( Fig. 15M,N View FIGURE 15 ). A pair of processes on male abdominal sternite VI longer than 0.1 mm, proximally parallel, distally divergent ( Fig. 9Q View FIGURE 9 ).

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 View FIGURE 15 ). Female tergites variable in color: nearly entirely pale yellow or each tergite with grayish brown to dark gray bands on sublateral portions ( Fig. 15N View FIGURE 15 ). Male abdominal sternites III and IV longer than wide, rectangular ( Fig. 28A View FIGURE 28 ). Female abdominal sternites VI longer than wide ( Fig. 28B View FIGURE 28 ).

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 View FIGURE 28 ). Surstylus with 1–3 recurved, thick, trichoid setae apically and 1–2 minute setae subapically ( Fig. 28C View FIGURE 28 ). Cercus pubescent except for anterior margin and ventral 2/5, with approximately 25–27 setae ( Fig. 28C View FIGURE 28 ).

Female terminalia. Oviscapt about 5 times as long as wide, slightly curved downward, with 19–20 ovisensilla ( Fig. 28F View FIGURE 28 ).

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 View FIGURE 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.