Phortica (Ashima) mediarista Chen

Chen, Hongwei & Máca, Jan, 2012, Ten new species of the genus Phortica from the Afrotropical and Oriental regions (Diptera: Drosophilidae), Zootaxa 3478, pp. 493-509 : 496-497

publication ID	https://doi.org/10.5281/zenodo.282314
DOI	https://doi.org/10.5281/zenodo.6178432
persistent identifier	https://treatment.plazi.org/id/0389DB6E-037B-FFB8-C788-3C32FDA4BE2E
treatment provided by	Plazi (2016-04-13 05:43:08, last updated 2024-11-29 13:15:11)
scientific name	Phortica (Ashima) mediarista Chen
status	sp. nov.

Treatment

Phortica (Ashima) mediarista Chen View in CoL , sp. nov.

( Figs 8–10 View FIGURES 8 – 10 )

Diagnosis. This species differs from the other Ashima species by having the arista both with dorsal and ventral long branches and with apical expansion; however, it is slightly similar to P. tanabei Chen & Toda in Chen et al., 2005 from China, Myanmar and Malaysia in the aedeagus bearing prickly sclerites and numerous, small triangular processes (in P. tanabei : aedeagal median rod apically hooked, somewhat like anchor).

Description. Frons brownish, with thick and dense interfrontal setae. Pedicel and first flagellomere yellowish. Face brown, with yellowish white patches on lower corners. Clypeus medially white, laterally black. Thorax and scutellum orange brown. Legs yellow, with neither submedial, dark spots on femora nor dark rings on tibiae; fifth tarsomere of foreleg with long seta apically (see Fig. 1 View FIGURES 1 – 3 D in Cao et al., 2011). Abdominal third to fifth sternites broadened, shorter than wide, with several long setae laterally; sixth sternite without long setae laterally. Male terminalia: Surstylus with several setae, pubescence and ca. 10 prensisetae on ventral margin to inner surface ( Fig. 9 View FIGURES 8 – 10 ). Paramere weakly sclerotized and smooth apically, with 2 sensilla subbasally ( Fig. 10 View FIGURES 8 – 10 ). Aegeagus lacking median rod ( Fig. 10 View FIGURES 8 – 10 ).

Measurements. BL = 3.44 mm, ThL = 1.56 mm, WL = 2.50 mm, WW = 1.25 mm, arb = 6-7/6-7, avd = 0.80, adf = 1.20, flw = 1.20, FW/HW = 0.38, ch/o = 0.06, prorb = 1.20, rcorb = 0.65, vb = 0.40, dcl = 0.50, presctl = 0.60, sctl = 1.10, sterno = 0.90, orbito = 1.80, dcp = 0.20, sctlp = 1.20, C = 2.11, 4c = 1.64, 4v = 3.09, 5x = 0.75, ac = 3.60, M = 0.73, C3F = 0.68.

Type material. Holotype 3 ( SEHU), MALAYSIA: Mahua, Crocker Range, Sabah, 16.x.1999, MJ Toda.

Distribution. Malaysia (Sabah).

Etymology. A combination of the Latin words: medius + arista, referring to the arista expanded apically and with dorsal and ventral branches.

References

Cao, H. L., Wang, X. L., Gao, J. J., Prigent, S. R., Watabe, H., Zhang, Y. P. & Chen, H. W. (2011) Phylogeny of the African and Asian Phortica (Drosophilidae) deduced from nuclear and mitochondrial gene sequences. Molecular Phylogenetics and Evolution, 61, 677 - 685.

Figures

FIGURES 8 – 10. Phortica (Ashima) mediarista Chen, sp. nov., male terminalia: 8. Epandrium, cercus and surstylus (lateral view); 9. surstylus (inner view); 10. hypandrium, paramere, gonopods, aedeagus and aedeagal apodeme (lateral view).

FIGURES 1 – 3. Phortica (Allophortica) chingolaensis Chen & Máca, sp. nov., male terminalia: 1. Epandrium (epand) and cercus (cerc) (lateral view); 2. surstylus (ventral view); 3. hypandrium (hypd), paramere (pm), gonopods (gon), aedeagal median rod (aed) and aedeagal apodeme (aed a) (lateral view) (all scale lines = 0.1 mm through this paper).