Phortica ( Ashima ) foliiseta Duda, 1923

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 : 18

12) Phortica ( Ashima) foliiseta Duda, 1923

Phortica foliiseta Duda, 1923: 35 ; Chen et al., 2005b: 420.

Amiota ( Phortica) foliiseta: Tsacas & Okada, 1983: 230 .

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

Diagnosis. Dorsomedial, tentorial apodeme 3/4 as long as basal, parallel portion of dorsolateral, tentorial apodeme; longest, dorsal branch of arista as long as longest seta on pedicel; each lateral lobe of aedeagal sheath with apically more or less pointed, sclerotized, anterior and posterior postgonites (“ Fig. 4 ” in Tsacas & Okada 1983).

Supplementary description. Supracervical setae approximately 12. Some interfrontal setulae as long as lowest setulae on ocellar triangle (ch.3-0). Arista with arb = 1–2/0; apical, leaf-like expansion narrower than long, apically tapering and pointed (ch.7-1). Cibarial, medial sensilla approximately 7 per side; posterior sensilla approximately 6 per side. Fore and mid tibiae entirely yellow (ch.17,18-0). All tarsi entirely yellow. Abdominal sternite III longer than wide (ch.22-0), not wider than IV (ch.23-0), without dense setulae on medial surface (ch.26-0). Pregonite gently curved ventrad distally. Posterior postgonites on lateral lobes of aedeagal sheath medially separated from each other (ch.66-0).

The antisymmetry is observed in the postgonites: in A-type, the right, posterior postgonite is slightly curved but the left one nearly straight, and the right, anterior postgonite is thicker than the left one (“ Fig. 4 ” in Tsacas & Okada 1983); but in B-type, vice versa.

Specimens examined. Taiwan: 2♂ (A-type), Shanlinxi , 16.x.1992, M.J. Toda leg. ( SEHU) ; 3♂ (B-type), Shan- linxi, 15–16.x.1992, M.J. Toda leg. ( SEHU) ; 1♂ (A-type), Wulai , 8.x.1992, M.J. Toda leg. ( SEHU) . China: 1♂ ( Btype), Dinghushan , Guangdong, 4–10.iii.1987, T.- X. Peng leg. ( SEHU) .

Distribution. Taiwan, China ( Guangdong), Thailand.

Remarks. This species and the subsequent three species form a cluster (BP = 88%) with three synapomorphies ( Fig. 1 ): abdominal sternite III longer than wide (ch.22-0), not wider than IV (ch.23-0), without dense setulae on medial surface (ch.26-0). However, this species can be distinguished from them by the diagnostic characters.

Figures

FIGURE 1. The strict consensus tree resulting from the parsimony analysis I (PAUP* v4.0a166) of the data matrix of 40 spp. × 66 morphological characters (Appendix 1) for the genus Phortica (especially focusing on the subgenus Ashima). Synapomorphies (solid circle: nonhomoplastic; open circle: homoplastic) inferred from both ACCTRAN and DELTRAN character optimization are indicated on each internal branch along with support values (bootstrap frequency %).

FIGURE 4. Phortica (Ashima) andreagigoni Toda & Bänziger, sp. nov. (♂ holotype). A, Antenna; B, periphallic organs (cau- dolateral view); C, aedeagus, phallapodeme, hypandrium and pregonite (lateral view); D, aedeagal sheath, postgonites, hypandrium and pregonites (ventral view). Scale bars: 0.1 mm.