Lordiphosa curva Fartyal & Toda

Fartyal, Rajendra S., Sati, Pradeep C., Pradhan, Sushmika, Kandpal, Mukul C., Toda, Masanori J., Chatterjee, Rabindra N., Singh,, 2017, A review of the genus Lordiphosa Basden in India, with descriptions of four new species from the Himalayan region (Diptera, Drosophilidae), ZooKeys 688, pp. 49-79: 51-54

publication ID

http://dx.doi.org/10.3897/zookeys.688.12590

publication LSID

lsid:zoobank.org:pub:9FD88178-8285-43D8-9A6E-560287FE0199

persistent identifier

http://treatment.plazi.org/id/F7A1A1E5-DBE8-4D82-879A-112056A9710E

taxon LSID

lsid:zoobank.org:act:F7A1A1E5-DBE8-4D82-879A-112056A9710E

treatment provided by

ZooKeys by Pensoft

scientific name

Lordiphosa curva Fartyal & Toda
status

sp. n.

Lordiphosa curva Fartyal & Toda  sp. n. Fig. 2

Type material.

Holotype. ♂: INDIA: Uttarakhand, Rudraprayag District, Chopta Forest. 30°27.560'N, 79°15.234'E, 2,700 m a.s.l., 31 August 2010, R. S. Fartyal leg. (DZHNBGU).

Paratypes. INDIA: 1♂, 1♀, same data as the holotype except 1 September 2010 ( MZSIK, SEHU).

Diagnosis.

Sex combs composed of thick setae of only distal most TBR on tarsomeres I–III (Fig. 2D). Cercus ventrally somewhat obliquely truncated, with approximately eight large, stout spines on ventral margin (Fig. 2F). Gonopod concaved proximally on posterior margin in lateral view (Fig. 2H). Paramere basally curved ventrad, apically much narrow, subapically with spinule (Fig. 2G, H). Female abdominal tergite VIII dorsally with approximately two setae (Fig. 2I). Oviscapt with approximately 35 small, lateral ovisensilla (Fig. 2I). Spermathecal capsule apically indented (Fig. 2J).

Description

(not referring to characters commonly seen in the foregoing species, L. neokurokawai  ). Adult male.Head. Eye with dense, interfacetal setulae. Supracervical setae 16-18 (Fig. 2A); postocular setae approximately 19; occipital setae 21-25. Dorsolateral arms of tentorial apodeme divergent, apically curved outward; dorsomedial arm half as long as dorsolateral arm (Fig. 2A). Occiput orange yellow, medially dark brown; ocellar triangle and fronto-orbital plates glossy, orange yellow; frontal vittae mat, greyish orange. Pedicel greyish orange yellow; first flagellomere grey; arista with 3-4 dorsal and one ventral branches in addition to terminal fork. Face orange yellow. Gena orange yellow but dark brown on anteroventral margin. Clypeus orange brown. Palpus yellow. Cibarium: anterolateral projections longer than half width of anterior margin; medial sensilla 20-21; posterior sensilla approximately 20. Prementum ventrally slightly expanded, thicker in ventral than in dorsal portion from lateral view (Fig. 2B, C). Labellum with five pseudotracheae per side (Fig. 2B).

Thorax. Postpronotal lobe grey yellow, with two prominent setae: upper one 0.8 as long as lower one. Scutum and scutellum grey yellow but grey brown medially. Thoracic pleura grey yellow, with dark grey patches. Acrostichal setulae in six rows. Basal scutellar setae divergent; apicals cruciate.

Wing. C1 setae two, subequal in size. Halter opaque white.

Legs grey yellow; tarsomere Vs of all legs darker. Foreleg femur with 4-6 long setae in two rows on outer side. Fore- and mid-leg tarsomere Is longer than three succeeding tarsomeres together; hindleg one longer than rest together. Preapical, dorsal setae present on tibiae of all legs; apical setae on tibiae of fore- and mid-legs.

Abdomen. Tergites grey yellow, each posteriorly darker. Sternites yellow.

Terminalia (Fig. 2 E–H). Epandrium with 11-14 setae on medial to dorsal portion and approximately four setae on ventral lobe (Fig. 2E). Surstylus with 6-7 apically pointed prensisetae arranged along caudobasal margin and 40-42 recurved setae on ventral portion of inner surface (Fig. 2E, F). Cercus nearly entirely pubescent except for lateral to ventral margin, with 21-24 setae (Fig. 2E, F). Hypandrium caudolaterally pubescent and fused to gonopod, with a pair of inward extended plates apically articulated to bases of parameres (Fig. 2G).

Measurements (holotype / 1♂ paratype, in mm). BL (straight distance from anterior edge of pedicel to tip of abdomen) = 2.65 / 2.77, ThL (distance from anterior notal margin to apex of scutellum) = 1.30 / 1.42, WL (distance from humeral cross vein to wing apex) = 3.47 / 3.67, WW (maximum wing width) = 1.40 / 1.54.

Indices (holotype / 1♂ paratype, in ratio). FW/HW (frontal width / head width) = 0.51 / 0.55, ch/o (maximum width of gena / maximum diameter of eye) = 0.28 / 0.27, prob (proclinate orbital seta / posterior reclinate orbital seta in length) = 0.70 / 0.81, rcorb (anterior reclinate orbital seta / posterior reclinate orbital seta in length) = 0.32 / 0.35, vb (subvibrissal seta / vibrissa in length) = 0.52 / 0.50, dcl (anterior dorsocentral seta / posterior dorsocentral seta in length) = 0.65 / 0.64, sctl (basal scutellar seta / apical scutellar seta in length) = 1.18 / 1.17, sterno (anterior katepisternal seta / posterior katepisternal seta in length) = 0.57 / 0.50, orbito (distance between proclinate and posterior reclinate orbital setae / distance between inner vertical and posterior reclinate orbital setae) = 0.54 / 0.53, dcp (distance between ipsilateral dorsocentral setae / distance between anterior dorsocentral setae) = 0.55 / 0.57, sctlp (distance between ipsilateral scutellar setae / distance between apical scutellar setae) = 1.09 /1.03, C (2nd costal section between subcostal break and R2+3 / 3rd costal section between R2+3 and R4+5) =3.70 / 3.21, 4c (3rd costal section between R2+3 and R4+5 / M1 between r-m and dm-cu) = 0.62 / 0.69, 4v (M1 between dm-cu and wing margin / M1 between r-m and dm-cu) = 1.62 / 1.62, 5x (CuA1 between dm-cu and wing margin / dm-cu between M1 and CuA1) = 1.64 / 1.70, ac (3rd costal section between R2+3 and R4+5 / distance between distal ends of R4+5 and M1) = 2.08 / 2.51, M (CuA1 between dm-cu and wing margin / M1 between r-m and dm-cu) = 0.49 / 0.50, C3F (length of heavy setation in 3rd costal section + length of light setation in 3rd costal section) = 0.50 / 0.58.

Adult female. Head, thorax, wings, and legs as in male, except for absence of sex combs on foreleg tarsus.

Terminalia (Fig. 2I, J). Tergite VIII pubescent laterally to dorsally (Fig. 2I). Epiproct and hypoproct entirely pubescent and setigerous (Fig. 2I). Oviscapt broad from basal to subapical portion, apically triangular, with 9-11 apically blunt, stout, peg-like ovisensilla on apicodorsal margin and 13-15 ones proximally reducing in size and increasing in interspace on ventral margin (Fig. 2I). Spermathecal capsule ellipsoidal, basally horizontally wrinkled; introvert 2/5 as deep as capsule height (Fig. 2J).

Measurements (1♀ paratype, in mm). BL = 2.84, ThL = 1.39, WL = 3.54, WW = 1.44.

Indices (1♀ paratype, in ratio). FW/HW = 0.50, ch/o = 0.28, prorb = 0.76, rcorb = 0.34, vb = 0.38, dcl = 0.66, sctl = 1.26, sterno = 0.48, orbito = 0.57, dcp = 0.54, sctlp = 1.20, C = 3.30, 4c = 0.69, 4v = 1.64, 5x = 1.66, ac = 2.64, M = 0.50, C3F = 0.46.

Etymology.

The specific name curva  = “curved” refers to the paramere basally curved ventrally.

Distribution.

India (Uttarakhand).

Remarks.

This species closely resembles L. neokurokawai  in having only one ventral branch of arista, the long, apically pointed paramere curved ventrad medially and outward apically, and the epandrium and the surstylus nearly identical in morphology, but can be clearly distinguished from it by the diagnostic characters.