Colocasiomyia cristata species group

Colocasiomyia cristata species group: Okada, 1990: 69; Sultana et al., 2006: 694; Fartyal et al., 2013: 768.

Diagnosis (modified from Fartyal et al. 2013). Fore tarsomere II with 4 or 5 equal-sized pegs on lower elongation (ch.14-1,2; Fig. 7A,B). Hypandrium posterolaterally connected to basal portion of phallal sheath through a pair of gonocoxites (Fig. 11).

Shared characters. Arista entirely densely pubescent, without branches (Figs 3C,G, 19A). Anterior reclinate orbital seta situated outside proclinate orbital seta (Fig. 3B,F). Palpus more or less convex in ventrodistal portion, with prominent seta apically and several shorter ones medially to distally. All cibarial sensilla tiny; anterior sensilla irregularly arranged in square or triangle (Fig. 4). Proboscis without a pair of lateral spherical bumps covered with numerous, short, stout setae. Spiracles small. Abdominal sternite II wider than long, somewhat trapezoid or triangular, posteriorly narrowing. Epandrium anteroventrally much elongated, not fused to cercus, without peg-like, stout seta at posteroventral apex (Fig. 10A,C,F). Pregonites absent (Fig. 11). Hypandrium more or less quadrate plate-like, as wide as or slightly wider than phallapodeme, lacking setae, posteriorly articulated to tips of epandrial ventral elongations (Fig. 11). Phallapodeme horizontally flat, fused to phallal sheath (Fig. 11). Oviscapt lateral lobes not fused to each other (Fig. 16J); ovisensilla all trichoid (Fig. 12A,C).

Included taxa. Colocasiomyia colocasiae species subgroup; C. cristata subgroup; and C. seminigra (Duda) *. Geographical distributions of all the component species are shown in Fig. 14. * Due to the insufficient information in the original description by Duda (1923), it cannot be determined to which subgroup this species from Papua New Guinea is to be assigned.