Lordiphosa ramula Zhang, 1993

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 : 47-50

Lordiphosa ramula Zhang, 1993

(Pls 1C, 3–5C, 7C; Fig. 5 )

Lordiphosa ramula Zhang, 1993: 147 .

Diagnosis. Cercus ventrally tapered, with a fringe of 6–8 spines on apicoventral margin; apical spine largest, curved posteriad apically ( Fig. 5C,D,F ). Branches of apical bifurcation of paramere unequal in length ( Fig. 5L,M ). Gonopods not rectangular, convex on ventral margin in lateral view ( Fig. 5K ).

Supplementary and revised description (characters commonly seen in L. denticeps not repeated) (♂, ♀). Head (Pls 1C, 3–5C, 7C): Frontal vitta and fronto-orbital plate yellowish brown. Antennal 1 st flagellomere pale yellowish brown; arista with 4–5 dorsal branches. Supracervical setulae 15¯17 per side; postocular setae 19–23 per side. Clypeus yellowish brown. Cibarium with ca. 28 medial and ca. 18 posterior sensilla per side. Prementum with 5 (1 proximal, 2 lateral, and 1–2 distal) pairs of setae.

Thorax (Pl. 1C): Postpronotal lobe paler than mesonotum. Mesonotum caudally sometimes brownish.

Legs (Pl. 1C, Fig. 5A,B ): Male foreleg with 9–12, 3–4 and 2 transverse sex-combs on 1st, 2nd and 3rd tarsomeres, respectively; each transverse row consisting of ca. 3 brown, not so thick teeth.

Abdomen (Pl. 1C): Tergites yellowish brown, each with brown caudal band narrower than 1/2 width of tergite.

Male terminalia ( Fig. 5C–M ): Epandrium with ca. 22 long setae. Cercus with ca. 28 long setae. Surstylus with a row of 9–12 prensisetae on caudodorsal margin and ca. 30 recurved setae on ventral portion of inner surface. Parameres distally flattened. Aedeagal apodeme as long as aedeagus.

Female terminalia ( Fig. 5N–P ): Tergite VIII yellowish brown, caudodorsally with 3–4 setae. Epiproct and hypoproct yellowish brown, somewhat grayish. Oviscapt valve apically somewhat triangular, not concaved on apicodorsal margin in lateral view, curved outward in ventral view, with ca. 8 and 14–16 ovisensilla on apicodorsal and ventral margins, respectively, laterally with ca. 31 minute ovisensilla. Spermathecal capsule hemispherical, broader than long, introvert about 4/7 height of capsule.

Measurements (in mm): BL = 2.23̄2.72/2.49̄3.05 (range in 6♂ / 6♀ specimens), ThL = 1.10̄1.30/1.20̄1.42, WL = 2.87̄3.27/3.05̄3.44, WW = 1.18̄1.30/1.26̄1.40.

Indices: FW/HW = 0.47̄0.52 (range in 6♂ and 6♀, or less if noted, specimens), ch/o = 0.14̄0.23, prorb = 0.75̄0.88 (6♂, 4♀), rcorb = 0.24̄0.35 (6♂, 4♀), vb = 0.39̄0.50 (6♂, 4♀), orbito = 0.42̄0.75, dcl = 0.60̄0.71 (5♂, 4♀), sctl = 1.08̄1.27 (6♂, 4♀), sterno = 0.38̄0.56 (6♂, 4♀), dcp = 0.48̄0.56, sctlp = 1.00̄1.22, C = 3.31̄3.91, 4c = 0.61̄0.70, 4v = 1.50̄1.68, 5x = 1.58̄1.95, ac = 2.00̄2.29, M = 0.44̄0.54, C3F = 0.45̄0.58.

Specimens examined. CHINA: 3♂, 2♀ (#06008, #06009, #06011, #06012, #06014), Bamboo Temple, Kunming , Yunnan, 19.viii.2006, J.J. Gao ( KIZ) ; 2♀ (#06019, #06020), Kunming , Yunnan, 22.iii.2005, J.J. Gao ( KIZ) ; 5♂, 2♀ (#06036, #06037, #06039, #06040, #06042, #06044, #06046), Mt. Duoxiongla, Linzhi , Xizang, 3,500–3,800 m a.s.l., 24.ix.2010, J.J. Gao ( KIZ) .

Distribution. China (Yunnan, Xizang *).

Remarks. The morphology of the male specimens examined here is almost concordant with Zhang's (1993) original description. However, there are clear discrepancies in the shape of oviscapt and the arrangement of ventral marginal ovisensilla between Zhang's (1993) original description (“ Fig. 15 ” therein) and the female specimens examined here ( Fig. 5N,O ). Since our female specimens have been identified as conspecific to the male L. ramula specimens collected together based on the DNA barcoding ( Fig. 2 ), it is likely that the female specimen designated as a allotype of L. ramura by Zhang (1993), preseverd in KIZ with a collection specimen number of #0062990 ( Li et al. 2015), is of a different species.

Figures

FIGURE 2. Bayesian tree of 12 species of the Lordiphosa denticeps species group based on COI gene sequences. Label of each operational taxonomic unit (OTU) is given in the format of “specimen voucher number (gender) collection locality in China”; bold voucher numbers indicate holotype specimens. Numbers beside nodes indicate posterior probabilities. Open and solid bars beside tree indicate the MOTUs sorted by the ABGD and GMYC analyses respectively.

FIGURE 5. Lordiphosa ramula Zhang, 1993 (A, B: #06011; C−L: #06040; M: #06009; N−P: #06046). 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, M, apical shape of paramere (ventrolateral view); N, O, oviscapt (ventral and lateral view, respectively); P, spermatheca.

FIGURE 15. Lordiphosa spatulata sp. nov. (A−L: holotype #06034). A, B, sex-combs on left 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 and gonopods (lateral view).