Phortica (Ashima) takehiroi Toda, 2020

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 : 33-34

33) Phortica (Ashima) takehiroi Toda , sp. nov.

( Fig. 9 )

Diagnosis. Arista with arb = 2/0 (ch.6-2) and apical, leaf-like expansion narrower than 1/2 length and apically roundish or slightly notched ( Fig. 9B ); anterior postgonite on left lateral lobe of aedeagal sheath apically trifurcated into one very large, sickle-like and two small, claw-like projections ( Fig. 9I ).

Description (not repeating characters common to P. glabra ). Supracervical setae 16–17. Dorsomedial, tentorial apodeme 1/2 as long as basal, parallel portion of dorsolateral, tentorial apodeme. Cibarial, medial sensilla approximately 6 per side; posterior sensilla 3–4 per side. All tarsi with gray tarsomere V; all tarsomere Is slightly longer than 3 succeeding tarsomeres together.

Measurements (holotype / 1♂ paratype, in mm): BL = 3.34/3.43, ThL = 1.55/1.37, WL = 2.46/2.24, WW = 1.08/1.03.

Indices (holotype / 1♂ paratype, in ratio): FW/HW = 0.43/0.48, ch/o = 0.11/0.09, prorb = 1.23/1.45, rcorb = 0.53/0.59, vb = 0.55/0.40, dcl = 0.49/0.50, presctl = 0.68/0.56, sctl = 1.01/1.03, sterno = 0.92/0.98, orbito = 1.91/1.95, dcp = 0.25/0.23, sctlp = 1.33/1.36, C = 2.48/2.32, 4c = 1.55/1.47, 4v = 3.37/(n/a), 5x = 1.17/1.08, ac = 3.40/(n/a), M = 0.76/0.68, C3F = 0.68/0.64.

Holotype. ♂ ( SEHU), “ Matsuyama , Ehime Pref., Japan, 33°51’19” N 132°46’21” E, 100 m a.s.l., 23.x.2010, T. Katoh”.

Paratype. Japan: 1♂, Kakei, Aki-ota , Hiroshima Pref., 18.vii.2010, T . Katoh ( SEHU) .

Distribution. Japan (Chugoku, Shikoku).

Remarks. This species resembles P. glabra in having the apically blunt posterior postgonite on the right side of aedeagal sheath and the long, broad, sinuated lateral lobe on the left side, but can be distinguished from it by the diagnostic characters.

Etymology. Patronym, dedicated to Dr. Takehiro Katoh, who collected the specimens.

Figures

FIGURE 9. Phortica (Ashima) takehiroi Toda, sp. nov. (♂ paratype). A, Head (caudal view); B, antenna; C, palpus and prob- ocsis; D, prementum; E, abdominal sternites; F, periphallic organs (caudolateral view); G–I, phallic organs (lateral, ventrolateral and ventral views, respectively). Scale bars: 0.1 mm in B–D, F–I; 0.5 mm in A, E.