Colocasiomyia grimaldii Gao & Toda, 2023

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 : 227

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.7907986
persistent identifier	https://treatment.plazi.org/id/03C687D9-FFCC-FFFA-A5C6-FEBD8272E080
treatment provided by	Plazi
scientific name	Colocasiomyia grimaldii Gao & Toda
status	sp. nov.

Treatment

5) Colocasiomyia grimaldii Gao & Toda View in CoL , sp. nov.

( Figs 2–12E View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 View FIGURE 9 View FIGURE 10 View FIGURE 12 , 14E View FIGURE 14 )

Colocasiomyia sp.4 aff. nepalensis: Sultana et al., 2006: 694 View in CoL .

Diagnosis. Antennal arista approximately 1.6 times as long as first flagellomere ( Fig. 3E View FIGURE 3 ). Distance between antennal scapes narrower than scape diameter ( Fig. 2E 2 View FIGURE 2 ). Acrostichal setulae in 8 rows ( Fig. 6E View FIGURE 6 ). All legs dark grayish yellow except for mid and hind tarsomeres I–IVs grayish yellow ( Fig. 14E View FIGURE 14 ). Cercus roundish on ventral margin (Fig. 11- 2E). Long, tube-like, membranous aedeagus ornamented with dense, stronger spinules (Fig. 11-2E). Hypogynial valves with roundish, dorsal flaps not fused to each other at distal end of basal portion ( Fig. 12E View FIGURE 12 ).

Description (♁ and ♀). Head. Antennal, first flagellomere approximately 1.3 times as long as pedicel ( Fig. 3E View FIGURE 3 ). Gena dark grayish brown ( Fig. 14E View FIGURE 14 ). Supracervical setae 4–5 and postoculars 17–18 per side ( Fig. 4E View FIGURE 4 ). Cibarial projections at anterolateral corners as long as width of anterior margin; medial sensilla in parallel rows as wide as sensilla campaniformia ( Fig. 5E View FIGURE 5 2 View FIGURE 2 ). Prementum and neighboring lateral membrane with 6–7 setae per side ( Fig. 5E View FIGURE 5 ).

Thorax glossy, blackish brown ( Fig. 14E View FIGURE 14 ).

Legs. Fore tarsomere I slightly shorter than II+III ( Fig. 9E View FIGURE 9 1 View FIGURE 1 ).

Abdomen. Sternites dark grayish brown.

Male terminalia. Cercus nearly entirely pubescent, with 32–34 setae.

Female terminalia. Epigynium with approximately 7 small sensilla per side near lower posterior margin ( Fig. 12D View FIGURE 12 1 View FIGURE 1 ).

Measurements (holotype /range in 5♁ and 5♀, or less if noted, paratypes, in mm): BL = 1.92/♁ 1.45–1.70, ♀ 1.65–1.88 (4♀); ThL = 0.81/♁ 0.66–0.82, ♀ 0.78–0.84; WL = 1.56/♁ 1.30–1.54, ♀ 1.46–1.61; WW = 0.74/♁ 0.60–0.72, ♀ 0.69–0.76.

Indices (holotype /range in 5♁ and 5♀, or less if noted, paratypes, in ratio): FW/HW = 0.58/0.55–0.60; ch/o = 0.40/0.39–0.46; rcorb = 0.38/0.43–0.55 (4♁ and 1♀); vb = 0.26/0.32–0.43; sctl = 0.56/0.58–0.70 (3♁ and 2♀); sctlp = 1.14/1.02–1.19; C = 1.46/1.30–1.43; 4c = 1.71/1.67–2.25; 4v = 2.94/2.52–3.58; 5x = 7.14/5.07–7.56; ac = 2.98/3.12–3.63; M = 1.25/1.14–1.64.

Holotype. ♁ ( MZB), “ Cibodas , West Java, Indonesia, 12.xii.2004, K. T. Takano / ex inflorescence of Pinanga coronata ”.

Paratypes. Indonesia: 9♁, 23♀, same data as the holotype, 14 ♁, 13♀, same data as the holotype except for 24.xii.2003 ( MZB, SEHU); 10 ♁, 10♀ (#05202–21), same data as the holotype except for 24.xii.2003 ( KIZ) .

Distribution. Indonesia (West Java).

Remarks. This species resembles C. oligochaeta sp. nov., but can be distinguished from it by the diagnostic characters.

Etymology. Patronym, in honor of Dr. David Grimaldi at the American Museum of Natural History, who made early contributions to the systematics of Colocasiomyia .