Lordiphosa srinagarensis Sati & Fartyal, 2017

Fartyal, Rajendra S., Sati, Pradeep C., Pradhan, Sushmika, Kandpal, Mukul C., Toda, Masanori J., Chatterjee, Rabindra N., Singh, Birendra K. & Bhardwai, Asha, 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 : 63-66

Lordiphosa srinagarensis Sati & Fartyal sp. n.

Fig. 7

Type material.

Holotype. ♂: INDIA: Uttarakhand, Srinagar Garhwal, Tehri district, HNBGU Forestry Nursery Chauras Campus, 30°13'N, 78°47'E, 560 m a.s.l., 16 December 2010, R. S. Fartyal leg. (DZHNBGU).

Paratypes. INDIA: 3♂, same data as the holotype (DZHNBGU, MZSIK, SEHU).

Diagnosis.

Surstylus with neither pubescence nor stout setae on outer surface (Fig. 7B ). Paramere distally bifurcated into ventral, sclerotized, apically pointed branch and dorsal, less sclerotized, apically hirsute branch; ventral branches asymmetric in length: left one longer (Fig. 7C, D ). Gonopods with medial broad and two apical narrow ridges in lateral view (Fig. 7D ).

Description.

Adult male. Head. Eye red, with sparse interfacetal setulae (Fig. 7A ). Occiput glossy, dark brown in dorsal half, grey yellow in ventral half. Supracervical setae 14-19, thin, apically more or less curved and pointed; postocular setae 14-16; occipital setae 12-13, including tiny medial ones. Dorsolateral arms of tentorial apodeme divergent, apically curved outwards, reaching to fronto-orbital plate; dorsomedial arm half as long as dorsolateral arm. Frons grey yellow except for dark brown upper portion of fronto-orbital plate and medial portion of ocellar triangle. Interspace between antennal sockets narrower than half of socket width; pedicel grey brown; first flagellomere grey, fringed with sparse, somewhat curved and long hairs on distal, outer margin, with only one small invaginated pouch; arista with 6-7 dorsal and 3-4 ventral branches in addition to terminal fork (Fig. 7A ). Face grey-yellow; carina only slightly elevated, without setulae below (Fig. 7A ). Gena grey-yellow, with dark brown, medial patch and ventral margin; subvibrissal seta distinctly shorter than vibrissa; additional row of oral setulae present above marginal row on anterior portion. Clypeus grey-brown. Palpus dark grey, with one prominent terminal and several short subapical to lateromedian setae, without setulae on basal lobe. Cibarium thickened on anterior margin, not dilated laterad in anterior portion; anterolateral corners almost not projected; dorsal sclerite pear-shaped in dorsal view, anteriorly convex in lateral view; anterior sensilla two pairs, widely arranged in square behind anterior margin of hypopharynx; 24-29 medial sensilla arranged in anteriorly convergent rows; sensilla campaniformia two; posterior sensilla long, trichoid, nearly straight, approximately 27, arranged in nearly parallel rows; somewhat sclerotized, thickened (in lateral view) anterior portion of hypopharynx 1/4 as long as cibarium. Labellum with five pseudotracheae.

Thorax. Nearly entirely brownish black. Posterior dorsocentral seta nearly equidistant from anterior margin of scutellum and anterior dorsocentral seta. Prescutellar setae absent. Acrostichal setulae in six rows. Basal scutellar setae parallel; apicals cruciate. Anterior katepisternal seta as thin as aristal branches; no setula present anteriorly to anterior katepisternal seta.

Wing slightly fuscous; veins grey brown; cross veins clear; bm-cu crossvein absent; R2+3 nearly straight; R4+5 and M1 nearly parallel. C1 setae two, unequal in size. Halter opaque white.

Legs grey yellow. Foreleg femur with approximately six long setae in two rows on outer side; tarsus without any sexual ornamentation. Foreleg tarsomere I as long as three succeeding tarsomeres together; mid- and hind-leg ones as long as rest together. Preapical, dorsal setae present on tibiae of all legs; apical setae on tibiae of fore- and mid-legs.

Abdomen. Tergites entirely glossy, brownish black, each with setae arranged in roughly four transverse rows: those in last row longest. Sternites pale to dark grey; setigerous VI present.

Terminalia (Fig. 7B-D ). Epandrium brown, smoothly curved on posterior mid-dorsal margin, nearly entirely pubescent except anterolateral margin and caudosubmedial portion, expanded on caudosubmedial margin at insertion of surstylus, caudoventrally developed into ventral lobe extended posteriad and apically slightly pointed, with about 5-7 setae on medial to dorsal portion, 9-12 setae on ventral lobe and unpubescent, inward fold on ventral margin (Fig. 7B ). Surstylus articulated to epandrium, wide, somewhat triangular plate, with 9-10 apically pointed prensisetae reducing in size below in a row on distal margin and 13-16 recurved setae on caudoventral, inner portion (Fig. 7B ). Cercus separated from epandrium, pubescent only medially, with 20-24 long setae medially to dorsally and 13-14 short ones on ventral portion (Fig. 7B ). Membrane between cercus and epandrium unpubescent (Fig. 7B ). Lateral lobe of tenth sternite larger than median lobe. Hypandrium dark brown, completely unpubescent, approximately thrice as long as wide, with a pair of inward extended plates apically articulated to ventral apices of parameres (Fig. 7C ). Paramere longer than aedeagus, basally curved ventrad and U-shaped in lateral view, with approximately three minute sensilla in a row proximally (Fig. 7D ). Aedeagal basal processes distally fused to membranous aedeagus and membrane posteriorly connected to gonopod; this composite distally hirsute (Fig. 7C, D ). Gonopods fused with each other, forming roof-like plate (Fig. 7C, D ).

Measurements (holotype / range in 2♂ paratypes, in mm). BL = 1.69 / 1.66-1.69, ThL = 0.65 / 0.65-0.75, WL = 2.05 / 1.95-2.05, WW = 1.04 / 0.81-1.04.

Indices (holotype / range in 2♂ paratypes, in ratio). FW/HW = 0.50 / 0.50-0.53, ch/o = 0.17 / 0.17-0.22, prorb = 0.71 / 0.57-0.71, rcorb = 0.33 / 0.33-0.57, vb = 0.50 / 0.50-0.63, dcl = 0.55 / 0.55-0.70, sctl = 1.50 / 1.44-1.50, sterno = 0.88 / 0.56-0.88, sterno2 = 0.50 / 0.44-0.50, orbito = 0.80 / 0.50-0.80, dcp = 0.43 / 0.43-0.50, sctlp = 0.63 / 0.63-0.80, C = 2.64 / 2.64-2.92, 4c = 0.88 / 0.88-0.92, 4v = 1.63 / 1.63-1.77, 5x = 1.60 / 1.33-1.60, ac =2.33 / 2.33-2.40, M = 0.50 / 0.50-0.62, C3F = 0.29 / 0.25-0.29.

Etymology.

Referring to the type locality.

Distribution.

India (Uttarakhand).

Remarks.

This species closely resembles Lordiphosa penicilla (Zhang, 1993) from southwestern China in the morphology of male terminalia, but can be distinguished from it by the diagnostic characters: in L. penicilla , surstylus medially pubescent and with several stout setae on outer surface; sclerotized ventral branches of parameres symmetric in length; gonopod with single medial ridge in lateral view ( Zhang 1993a: "Figs 4 - 6 ").

Figures

Figure 4. Lordiphosa ayarpathaensis Kandpal & Singh, sp. n. (♂ ♀ paratypes from Ayarpatha, Nainital district, Kumaon, Uttarakhand, India): A, B proboscis (A lateral view B posterior view) C, D periphallic organs (C caudolateral view D caudoventral view) E, F phallic organs: aedeagal basal processes (aed b p) (E ventral view F lateral view) G, H ♀ terminalia: perineal plate (per pl) (G lateral view H ventral view) I spermatheca. Scale bars 0.1 mm.

Figure 6. Lordiphosa makaibarensis Pradhan & Chatterjee, sp. n. (♂ paratype from Kurseong, Darjeeling, West Bengal, India): A, B periphallic organs (A caudolateral view B caudoventral view) C, D phallic organs (C ventral view D lateral view) E, F oviscapt (E lateral view F ventral view). Scale bars 0.1 mm.

Figure 7. Lordiphosa srinagarensis Sati & Fartyal, sp. n. (♂ paratype from HNB Garhwal University, Srinagar, Garhwal, Uttarakhand, India): A head (frontal view) B periphallic organs (caudolateral view) C, D phallic organs (C ventral view D lateral view). Scale bars 0.1 mm.