Phortica (Ashima) brachychaeta Chen & Toda, 2005

Toda, Masanori J., Bänziger, Hans, Sati, Pradeep C., Fartyal, Rajendra S., Suwito, Awit & Katoh, Toru, 2020, Taxonomy and evolution of asymmetric male genitalia in the subgenus Ashima Chen (Diptera: Drosophilidae: Phortica Schiner), with descriptions of seven new species, Zootaxa 4789 (1), pp. 1-54 : 21

17) Phortica (Ashima) brachychaeta Chen & Toda, 2005

Phortica brachychaeta Chen & Toda in Chen et al., 2005b: 422 .

Phortica (Ashima) brachychaeta: Chen & Máca, 2012: 507 .

Diagnosis. Arista apically with somewhat triangular, leaf-like expansion but neither dorsal nor ventral branches (“ Fig. 5 ” in Chen et al. 2005b); all postgonites nearly straight in ventral view; posterior postgonite apically pointed, as long as anterior ones; 2 anterior postgonites on one lateral lobe nearly parallel (“ Fig. 8 ” in Chen et al. 2005b).

Supplementary description (not repeating characters common to P. speculum ). Supracervical setae 14–16. Cibarial, medial sensilla approximately 8 per side; posterior sensilla 6–7 per side.

The antisymmetry is observed in the postgonites: in A-type, the left lateral lobe bears 2 anterior postgonites, and the right lobe 1 posterior and 1 anterior postgonites; but in B-type, vice versa (“ Fig. 8 ” in Chen et al. 2005b).

Specimen examined. Thailand: 1♂ (B-type), Chang Khian Stream gully, Doi Suthep , Chiang Mai, ~ 1,100 m a.s.l., 13.ii.2009, H. Bänziger leg. ( SEHU) .

Distribution. China (Guangdong, Yunnan), Thailand *.

Remarks. This species resembles P. speculum within the foliiseta complex, in having the abdominal sternite III wider than long (ch.22-1), widest among sternites (ch.23-1), and with dense setulae on medial surface (ch.26-1), but can be distinguished from it by the diagnostic characters.

Figures

FIGURE 5. Phortica (Ashima) watabei Sati & Fartyal, sp. nov. (♂ paratype). A, Head (frontal view); B, abdominal sternites; C, periphallic organs (caudal view); D, E, phallic organs (lateral and ventral views, respectively; B-type). Scale bars: 0.1 mm in C–E; 0.5 mm in A, B.

FIGURE 8. Phortica (Ashima) kerinciensis Toda, sp. nov. (♂ paratype). A, Antenna; B, posterior portion of scutum (dorsal view); C, medial and posterior sensilla on cibarium (dorsal view); D, fore tarsus; E, abdominal sternites; F, habitus (ventral view); G, periphallic organs (caudolateral view); H, aedeagus and postgonites; I–K, phallic organs (lateral, ventral and ventrolateral views, respectively; B-type). Scale bars: 0.1 mm in A, C, D, G–K; 0.5 mm in B, E, F.