Lordiphosa secula Katoh & Gao, 2018

Katoh, Takehiro K., Zhang, Guang, Toda, Masanori J., Zhang, Wen-Xia & Gao, Jian-Jun, 2018, The Lordiphosa denticeps species group (Diptera: Drosophilidae) in China, with redescriptions of four known species and descriptions of nine new species, Zootaxa 4471 (1), pp. 37-75 : 64-66

Lordiphosa secula Katoh & Gao , sp. nov.

(Pls 2D, 3L, 4L, 6D, 7L; Fig. 14 )

Diagnosis. Cercus ventrally truncated, somewhat protruded ventrad, with a fringe of 5–7 spines on ventral margin ( Fig. 14C,D,F ). Paramere broad, flat, apically sharp in lateral view, ventrosubapically with small, acute projection ( Fig. 14K,L ).

Description (characters commonly seen in L. yangi sp. nov. not repeated) (♂). Head (Pls 2D, 3L, 4L, 6D, 7L): Frontal vitta yellowish brown. Fronto-orbital plate yellowish brown. Ocellar triangle yellowish brown. Occiput medially paler. Arista with 4 dorsal and 1 ventral branches. Supracervical setulae 12¯15 per side; postocular setae 21–25 per side. Clypeus yellowish brown, dark brown on dorsal margin. Cibarium with ca. 22 medial and 17–20 posterior sensilla per side. Prementum pale yellow, with 5 (1 proximal, 1 central, 2 lateral, and 1 distal) pairs of setae.

Thorax (Pl. 2D) yellowish brown. Mesonotum without stripe. Thoracic pleura ventrally paler.

Legs (Pl. 2D, Fig. 14A,B ): Male foreleg with 9–10, 3–4, and 2 transverse sex-combs on 1st, 2nd, and 3rd tarsomeres, respectively; each row consisting of 3–4 brown, thick teeth. Foreleg 1 st tarsomere shorter than total length of 4 succeeding tarsomeres. Midleg 1 st tarsomere longer than or as long as total length of 4 succeeding tarsomeres.

Abdomen (Pl. 2D): Tergites without caudal bands.

Male terminalia ( Fig. 14C–L ): Epandrium with ca. 20 long setae per side; ventral lobe somewhat finger-like. Cercus with ca. 18 long setae. Surstylus with a row of ca. 10 prensisetae on caudodorsal margin and ca. 32 recurved setae on ventral portion of inner surface. Gonopods dorsoproximally concaved in lateral view. Aedeagal apodeme longer than aedeagus.

Measurements (in mm): BL = 2.40 in holotype (range in 2♂ paratypes: 2.22̄2.31), ThL = 1.16 (1.12), WL = 3.07 (3.00̄3.03), WW = 1.24 (1.20̄1.21).

Indices: FW/HW = 0.52 (range in 2♂, or less if noted, paratypes: 0.47̄0.49), ch/o = 0.16 (0.20̄0.21), prorb = 0.76 (1♂: 0.90), rcorb = 0.29 (1♂: 0.29), vb = 0.41 (0.38̄0.50), orbito = 0.64 (0.55̄0.70), dcl = 0.64 (0.58̄0.64), sctl = 1.25 (1.25), sterno = 0.47 (0.39̄0.48), dcp = 0.56 (0.47̄0.50), sctlp = 1.22 (1.11̄1.17), C = 3.56 (3.52̄3.61), 4c = 0.67 (0.63̄0.66), 4v = 1.63 (1.56̄1.66), 5x = 1.62 (1.70̄1.90), ac = 2.40 (2.42̄2.56), M = 0.47 (0.47̄0.54), C3F = 0.44 (0.42̄0.48).

Holotype. ♂ (#06041), Mt. Duoxiongla , Linzhi, Xizang, China, 3,500–3,800 m a.s.l., 24.ix.2010, J.J. Gao ( KIZ).

Paratypes. CHINA: 2♂ (#06045, #06047), same data as holotype ( KIZ).

Distribution. China (Xizang).

Etymology. From Latin word “ secula ” (meaning “sickle”), referring to the shape of paramere likes sickle.

PLATE 2. Left lateral habitus, thorax, wing, and abdomen of Lordiphosa species (2). A, L. tibetica sp. nov. (holotype #06043); B, L. medogensis sp. nov. (holotype #06006); C, L. hamatispina sp. nov. (holotype #06027); D, L. secula sp. nov. (paratype #06047); E, L. spatulata sp. nov. (holotype #06034).

Figures

FIGURE 14. Lordiphosa secula sp. nov. (A, B: paratype #06045; C−L: paratype #06047). A, B, sex-combs on right foreleg (lateral and ventrolateral view, respectively); C, D, periphallic organs (caudal and caudolateral view, respectively); E, epandrial ventral lobe (lateral view); F, surstyli and ventral spines of cercus (caudal view); G, inner surface of surstylus (caudolateral view); H, 10th sternite (ventral view); I̅K, phallic organs (ventral, ventrolateral, and lateral view, respectively); L, apical shape of paramere (lateral view).