Colocasiomyia kotana 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 : 34

7) Colocasiomyia kotana Toda & Takano , sp. nov.

( Figs 9K , 15G , 22 )

Colocasiomyia sp.1 aff. sulawesiana: Sultana et al., 2006: 694 ; Toda & Lakim, 2011: 264; Takano et al., 2011: 22; Takano et al., 2012: 559, Supplemental File 1; Fartyal et al., 2013, Fig. 6 .

Diagnosis. A pair of processes on male abdominal sternite VI short (<0.05 mm), widely separated, strongly divergent, apically somewhat pointed ( Fig. 9K ). Phallal sheath apically vertically dilated in lateral view, subapically without any appendages ( Fig. 22D,E ).

Description (♂ and ♀; not repeating characters common to C. kinabaluana sp. nov.). Head. Supracervical setae 6–7 per side, nearly straight, as long as inner occipital setae. Cibarial, posterior sensillum 0–1 per side. Supralateral setae outside prementum approximately 4 per side.

Male terminalia. Epandrium posteroventrally roundish on margin but not extended, with approximately 2 setae on lateral portion and 22–24 setae on ventral portion of each side ( Fig. 22C ). Cercus nearly oval, slightly constricted ventrosubapically, pubescent on dorsal 2/5, with 54–55 setae ( Fig. 22C ).

Female terminalia. Oviscapt shorter than phallus (apodeme + sheath), with 16–19 ovisensilla; distal portion spatulate, roundish apically ( Fig. 22F ).

Indices (range of 10♂ and 10♀): FW/HW = 0.55–0.65, ch/o = 0.36–0.53, prorb = 0.87–1.03, rcorb = 0.28–0.44, vb = 0.23–0.39, dcl = 0.57–0.93, sctl = 0.82–0.97, sterno = 0.67–0.99, orbito = 0.40–0.63, dcp = 1.13–1.34, sctlp = 1.27–1.64, C = 1.50–2.06, 4c = 1.07–1.29, 4v = 1.47–1.96, 5x = 0.83–1.12, ac = 2.69–3.40, M = 0.32–0.47.

Puparium (3rd instar larva). Anterior spiracle with a bundle of approximately 5 short branches ( Fig. 22G ).

Holotype. ♂ ( BORN), “ Kota Kinabalu , Sabah, Malaysia, 12.viii.2004, ex Alocasia macrorrhizos, K.T. Takano ”.

Paratypes. Malaysia: 10♂, 10♀, same data as the holotype ( BORN, SEHU) . Philippines: 10♂, 10♀, Legaspi, S. Luzon, 13°08’52”N 123°44’04”E, 30.xi.2012, ex A. macrorrhizos, P.J. Matthews, M. Medecilo & J.R. Castillo leg .; 10♂, 10♀, Gandara, Samar, 12°00'56"N 124°47'43"E, 2.xii.2012, ex A. macrorrhizos, P.J. Matthews, M. Medecilo & J.R. Castillo leg .; 7♂, 9♀, Tanuan, N. Leyte, 11°07'03"N 125°00'55"E, 3.xii.2012, ex A. macrorrhizos, P.J. Matthews, M. Medecilo & J.R. Castillo leg .; 10♂, 10♀, Sabang, Palawan, 10°11'24"N 118°54'00"E, 5.ii.2013, ex A. macrorrhizos, P.J. Matthews, E.M. Agoo & D.A. Madulid leg. ( MPMP, SEHU) .

Distribution. Borneo (Sabah), Philippines (Luzon, Samar, Leyte, Palawan).

Remarks. This species resembles C. sulawesiana in the apical, vertical dilation of phallal sheath ( Figs 20D , 22D ), but can be distinguished from it by other diagnostic characters and the oviscapt shorter than the phallus (apodeme + sheath).

Etymology. Referring to the type locality.

Figures

FIGURE 6. Character 12 of costal setae on the wing (anterodistal portion) of Colocasiomyia xenalocasiae (Okada) (A), C. colocasiae (Duda) (B) and C. cristata de Meijere (C). Scale bars: 0.1 mm.

FIGURE 9. Male abdominal sternite VIs of Colocasiomyia colocasiae (Duda) (B in anteroventral view, C in lateral view), C. stamenicola (Carson & Okada) (D in anterior view) and all species of the C. cristata subgroup (A in ventral view, E‒R in anterior view): A, C. ecornuta sp. nov.; E, C. grandis sp. nov.; F, C. vieti sp. nov.; G, C. cristata de Meijere; H, C. matthewsi sp. nov.; I, C. sulawesiana Okada & Yafuso; J, C. kinabaluana sp. nov.; K, C. kotana sp. nov.; L, C. sabahana sp. nov.; M, C. sarawakana sp. nov.; N, C. pistilicola (Carson & Okada); O, C. xenalocasiae (Okada); P, C. diconica (Toda & Okada); Q, C. sumatrana sp. nov.; and R, C. leucocasiae sp. nov. Scale bars: 0.1 mm.

FIGURE 15. Habitus (upper, lateral view; lower, dorsal view) of species of the Colocasiomyia cristata subgroup.A, C. ecornuta sp. nov. ♂; B, C. grandis sp. nov. ♂; C, C. vieti sp. nov. ♂; D, C. cristata de Meijere ♂; E, C. sulawesiana Okada & Yafuso ♂; F, C. kinabaluana sp. nov. ♂; G, C. kotana sp. nov. ♂; and H, C. matthewsi sp. nov. ♂. Scale bars: 1 mm.

FIGURE 20. Colocasiomyia sulawesiana Okada & Yafuso (♂, ♀ and puparium from Enrekang, South Sulawesi, Indonesia). 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); G, anterior spiracles of puparium (dorsal view); H, puparium (ventral habitus; inset: caudal-most portion); I, mouth hook; J, cephalopharyngeal skeleton. Scale bars: 0.1 mm in A–F and J, 1.0 mm in H.

FIGURE 22. Colocasiomyia kotana Toda & Takano, sp. nov. (♂ and ♀ paratypes and puparium from Kota Kinabalu, Sabah, Malaysia). 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); G, anterior spiracles of puparium (dorsal view); H, puparium (ventral habitus; inset: caudal-most portion); I, mouth hook; J, cephalopharyngeal skeleton. Scale bars: 0.1 mm in A–F and J, 1.0 mm in H.