Lordiphosa denticeps ( Okada & Sasakawa, 1956 )

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 : 44-46

Lordiphosa denticeps ( Okada & Sasakawa, 1956)

(Pls 1A, 3–5A, 7A; Fig. 3 )

Drosophila (Hirtodrosophila) denticeps Okada & Sasakawa, 1956: 26 .

Drosophila (Lordiphosa) denticeps: Okada, 1990: 154 .

Lordiphosa denticeps: Zhang, 1993: 144 .

Diagnosis. Male foreleg with ca. 4, 3–4, and 2 transverse sex-combs on 1st, 2nd, and 3rd tarsomeres, respectively; each transverse row consisting of 2–4 brown, thick teeth ( Fig. 3A,B ). Cercus ventrally roundly truncated, with a fringe of 7–8 spines ( Fig. 3C,F ). Paramere apically bifurcated; bifurcation small, sometimes with minute serration between bifurcation ( Fig. 3L ).

Supplementary and revised description (♂). Head (Pls 1A, 3–5A, 7A): Frontal vitta brown, anteriorly somewhat paler. Fronto-orbital plate brown, darker than frontal vitta. Ocellar triangle brown. Face, facial carina, and gena yellowish brown. Occiput dark brown, dorsally yellowish brown. Postgena dark brown, laterally yellowish brown. Antennal pedicel yellowish brown; 1 st flagellomere pale grayish yellow; arista with 5 dorsal and 1 ventral branches and small terminal bifurcation. Palpus yellowish brown. Supracervical setulae 11¯14 per side; postocular setae 15–16 per side. Clypeus yellowish brown, dorsally grayish. Cibarium with ca. 21 medial and ca. 14 posterior sensilla per side. Prementum with 4–5 (1 proximal, 1–2 lateral, and 2 distal) pairs of setae.

Thorax (Pl. 1A) yellowish brown to brown. Mesonotum medially with 1 brown, longitudinal, caudally broadened stripe which anteriorly indistinct. Scutellum brown. Acrostichal setulae in 6 regular rows. Mid katepisternal seta indistinguishable from those below it.

Legs (Pl. 1A, Fig. 3A,B ): Fore- and midleg 1 st tarsomeres nearly as long as total length of 4 succeeding tarsomeres.

Abdomen (Pl. 1A): Tergites grayish brown, glossy, caudally with dark grayish brown, narrow, marginal bands.

Male terminalia ( Fig. 3C–L ): Epandrium yellowish brown, pubescent except for anterior subdorsal to ventral margin, with ca. 22 long setae per side; ventral lobe elongated, apically rounded. Cercus yellowish brown, with ca. 23 long setae. Surstylus with a row of ca. 12 prensisetae on caudodorsal margin and ca. 31 recurved setae on ventral portion of inner surface. Hypandrial caudolateral plates pubescent. Parameres curved ventrad, proximally U-shaped in lateral view, distally slightly divergent from each other. Gonopods dorsoproximally concaved in lateral view. Aedeagus nearly entirely membranous, largely sheathed with gonopods; apodeme apically broadened in lateral view, slightly shorter than aedeagus.

Measurements (in mm): BL (straight distance from anterior edge of pedicel to tip of abdomen) = 2.23 (1♂), ThL (distance from anterior notal margin to apex of scutellum) = 1.26, WL (distance from humeral cross vein to wing apex) = 3.17, WW (maximum wing width) = 1.30.

Indices: FW/HW (frontal width/head width) = 0.49, ch/o (maximum width of gena/maximum diameter of eye) = 0.23, prorb (proclinate orbital seta/posterior reclinate orbital seta in length) = n/a, rcorb (anterior reclinate orbital seta/posterior reclinate orbital seta in length) = n/a, vb (subvibrissa/vibrissa in length) = n/a, orbito (distance between proclinate and posterior reclinate orbital setae/distance between inner vertical and posterior reclinate orbital setae) = 0.70, dcl (anterior dorsocentral seta/posterior dorsocentral seta in length) = 0.70, sctl (basal scutellar seta/apical scutellar seta in length) = 1.21, sterno (anterior katepisternal seta/posterior katepisternal seta in length) = 0.41, dcp (distance between ipsilateral dorsocentral setae/distance between anterior dorsocentral setae) = 0.59, sctlp (distance between ipsilateral scutellar setae/distance between apical scutellar setae) = 1.15, C (2nd costal section between subcostal break and R2+3/3rd costal section between R2+3 and R4+5) = 3.23, 4c (3rd costal section between R2+3 and R4+5/M1 between r-m and dm-cu) = 0.68, 4v (M1 between dm-cu and wing margin/M1 between r-m and dm-cu) = 1.56, 5x (CuA1 between dm-cu and wing margin/dm-cu between M1 and CuA1) = 1.38, ac (3rd costal section between R2+3 and R4+5/distance between distal ends of R4+5 and M1) = 2.17, M (CuA1 between dm-cu and wing margin/M1 between r-m and dm-cu) = 0.47, C3F (length of heavy setation in 3rd costal section/ length of 3rd costal section) = 0.52.

Specimen examined. CHINA: ♂ (#06025), Mt. Duoxiongla [southern slope, along the way from Pai Town , Milin (Mainling) County to Lage Village , Baiba Town , Linzhi (Nyingchi) County ; the same hereinafter], Linzhi , Xizang, 3,500–3,800 m a.s.l., 24.ix.2010, J.J. Gao ( KIZ).

Distribution. Japan (Honshu, Kyushu), China (Sichuan, Xizang *). * New record.

PLATE 1. Left lateral habitus, thorax, wing, and abdomen of Lordiphosa species (1). A, L. denticeps ( Okada & Sasakawa, 1956) (#06025); B, L. neokurokawai ( Singh & Gupta, 1981) (#06010); C, L. ramula Zhang, 1993 (#06009); D, L. tripartita ( Okada, 1966) (#06049); E, L. mikioides sp. nov. (paratype #06062); F, L. kimurai sp. nov. (holotype #06065); G, L. anthophilia sp. nov. (holotype #05610); H, L. yangi sp. nov. (holotype #06005). Scale: dashed line = 1 mm; dotted line = 0.5 mm (the same in the other plates).

Figures

FIGURE 3. Lordiphosa denticeps (Okada & Sasakawa, 1956) (A−L: #06025). 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). Abbreviations: aed = aedeagus, aed a = aedeagal apodeme, cerc = cercus, epand = epandrium, gon = gonopods, hypd = hypandrium, pm = paramere, sur = surstylus. Scale: solid line = 0.1 mm.