Colocasiomyia zeylanica (Okada, 1986)

Zhang, Guang, Gao, Jian-Jun, Takano, Kohei Takenaka, Yafuso, Masako, Suwito, Awit, Meleng, Paulus Ak & Toda, Masanori J., 2023, Phylogenetic classification and palm-inflorescence anthophily of the Colocasiomyia zeylanica species group (Diptera: Drosophilidae), with descriptions of five new species, Zootaxa 5278 (2), pp. 201-238 : 221

publication ID	https://doi.org/ 10.11646/zootaxa.5278.2.1
publication LSID	lsid:zoobank.org:pub:697AC989-141D-4A89-8F02-5A4644E303EA
DOI	https://doi.org/10.5281/zenodo.7906003
persistent identifier	https://treatment.plazi.org/id/03C687D9-FFC2-FFF4-A5C6-FDCB8415E2A5
treatment provided by	Plazi
scientific name	Colocasiomyia zeylanica
status

Treatment

Colocasiomyia zeylanica View in CoL species group

Colocasiomyia zeylanica View in CoL species group: Sultana et al., 2006: 694; Fartyal et al., 2013: 769.

Diagnosis (modified from Fartyal et al. 2013). Pedicel with uniformly short, stout setae only, lacking prominently long one(s) (ch.2-1; Fig. 3 View FIGURE 3 , “ Fig. 6 View FIGURE 6 ” in Grimaldi 1991). Two peg-like setae present only on fore tarsomere II (ch.36- 0, ch.38-0; Fig. 9A–E View FIGURE 9 1 View FIGURE 1 , “ Fig. 1C View FIGURE 1 ” in Okada 1986, “ Fig. 9 View FIGURE 9 ” in Grimaldi 1991). Hypandrium forming like tube surrounding phallus (ch.66-2; Fig. 11). Gonocoxites absent (ch.69-4; Fig. 11).

Shared characters. Distance between antennal scapes wider than half of scape diameter (ch.1-1; Fig. 2A–E 2 View FIGURE 2 , “ Fig. 1A View FIGURE 1 ” in Okada 1986, “ Fig. 6 View FIGURE 6 ” in Grimaldi 1991). Antennal, first flagellomere grayish yellow, with small invaginated organ but no hollow organ (ch.3-0; Fig. 3 View FIGURE 3 , “ Fig. 6 View FIGURE 6 ” in Grimaldi 1991); arista entirely densely pubescent, without branches (ch.5-1; Fig. 3 View FIGURE 3 , “ Fig. 1A, B View FIGURE 1 ” in Okada 1986, “ Fig. 6 View FIGURE 6 ” in Grimaldi 1991). Eye dark red ( Fig. 14 View FIGURE 14 ). Frons blackish brown; frontal vittae mat. Supracervical setae distally more or less curved, longer than inner, occipital setae (ch.11-0, ch.12-0; Fig. 4 View FIGURE 4 ). Palpus pale grayish yellow, flat or convex in ventrodistal portion (ch.16-0; Fig. 5 View FIGURE 5 , “ Fig. 1B View FIGURE 1 ” in Okada 1986, “ Fig. 7 View FIGURE 7 ” in Grimaldi 1991). All cibarial sensilla very small or minute; anterior sensilla irregularly arranged in square or triangle (ch.18-1, ch.19-1; Fig. 5A–E View FIGURE 5 2 View FIGURE 2 , “ Fig. 7 View FIGURE 7 ” in Grimaldi 1991). Proboscis without a pair of lateral, spherical bumps covered with numerous, short, stout setae (ch.22-0; Fig. 5 View FIGURE 5 , “ Fig. 7 View FIGURE 7 ” in Grimaldi 1991). Additional, presutural, dorsocentral setae absent ( Fig. 6 View FIGURE 6 , “ Fig. 1A View FIGURE 1 ” in Okada 1986). Basal and apical, scutellar setae nearly parallel ( Fig. 6 View FIGURE 6 ). Halter grayish brown. Wing hyaline; veins yellow ( Fig. 8 View FIGURE 8 ). Fore tarsomere II slightly elongated below (ch.34-1; Fig. 9A–E View FIGURE 9 1 View FIGURE 1 , “ Fig. 1C View FIGURE 1 ” in Okada 1986, “ Fig. 9 View FIGURE 9 ” in Grimaldi 1991). Preapical setae absent on all tibiae (ch.41-1; Fig. 9 View FIGURE 9 , “ Fig. 1A View FIGURE 1 ” in Okada 1986). Dorsomedian, terminal, down-curved seta on tarsomere Vs not longer than claw (ch.42-0; Fig. 9 View FIGURE 9 ). Mid tibia apicoventrally with 2 (1 long and 1 small) stout setae (ch.39-0; Fig. 9A–E View FIGURE 9 2 View FIGURE 2 ). Spiracles simple, small (ch.44-0). Male sternite VI pubescent entirely, without process (ch.48-0, ch.50-0; Fig. 10A–E View FIGURE 10 1 View FIGURE 1 ). Epandrium anteroventrally much elongated, not fused to cercus, without peg-like, stout seta at posteroventral apex; apodeme narrow lobe on anteromedial to -dorsal margin or absent (ch.55- 1, ch.57-0, ch.58-0, ch.62-0; Figs 11-1A–C 1,2, 11-2D, E). Hypandrial setae absent (ch.67-1; Figs 11-1A–C 3,4, 11-2D, E). Postgonites fused to aedeagal sheath, forming together phallal-sheath tube distally more or less separated into a pair of lateral lobes (ch.71-1, ch.72-1, ch.73-0; Figs 11-1A–C 3,4, 11-2D, E). Phallapodeme mostly rod-like (ch.77-0; Figs 11-1A–C 3,4, 11-2D, E; “ Fig.10 View FIGURE 10 ” in Grimaldi 1991). Phallal guide absent (ch.78-0; Figs 11-1A–C 4, 11-2D, E). Epiproct nearly entirely pubescent (ch.79-0; Fig. 12A–E View FIGURE 12 1 View FIGURE 1 ). Epigynium pubescent only on dorsal portion (ch.82-0; Fig. 12A–E View FIGURE 12 1 View FIGURE 1 ). Hypogynial, anteroventral bridge absent (ch.85-1; Fig. 12A–E View FIGURE 12 2 View FIGURE 2 ); valves separated from each other, distally differentiated into more or less narrow process from basal, broad portion, with only trichoid sensilla (ch.86- 0, ch.87-1, ch.88-1; Fig. 12 View FIGURE 12 ).

Included taxa. Colocasiomyia zeylanica species subgroup; and C. oligochaeta subgroup.

Key. The digital, multiple-entry key “ Colocasiomyia zeylanica View in CoL species group” to all species of this group has been constructed partly based on the character matrix of Appendix 2, and is available from the following website: https://evolgen.biol.se.tmu.ac.jp/Classification/index.jsp (Biological Classification and Identification System).