Euphranta diffusa David

David, K. J., Hancock, D. L., Freidberg, A. & Goodger, K. F. M., 2013, New species and records of Euphranta Loew and other Adramini (Diptera: Tephritidae: Trypetinae) from south and southeast Asia, Zootaxa 3635 (4), pp. 439-458 : 443-444

Euphranta diffusa David , sp. nov.

( Figs 14–19 )

Description. Male. Body length, 4.89 mm; wing length, 4.5 mm.

Head: almost round, as high as long. Frons fulvous with two frontal setae and one orbital seta, all black and acuminate, frontal setae widely separated, the dorsal one very close to orbital seta; ocellar seta vestigeal. Antenna shorter than or as long as face, antennal segments dark fuscous, arista long plumose. Face concave, fulvous without any spots; gena and parafacial fulvous, occiput black laterally and fulvous medially; postocellar, lateral and medial vertical setae distinct, postocular row thin and black.

Thorax ( Figs 14 & 15 ): Scutum 2.1 mm long and 1.1 mm wide, predominantly dark brown to black except light brown longitudinal band from scapular setae to yellow prescutellar patch, notopleuron, postpronotal lobe, base of transverse suture and anepisternal stripe. Thorax with well developed setae: 2 scapular, 1 postpronotal, 1 anterior notopleural, 1 posterior notopleural, 1 postsutural supra-alar, 1 postalar, 1 dorsocentral, 1 intra-alar and 1 prescutellar acrostichal seta. Dorsocentral seta placed midway between line of supra-alar seta and prescutellar seta. Scutellum yellow with two pairs of scutellar setae. Anepisternum and anepimeron brown to black with single seta, anepisternal stripe as broad as notopleuron. Laterotergite brown to black with fine erect hairs. Katepisternum fulvous anteriorly and dark brown posteriorly. Halteres light fuscous.

Legs ( Fig. 15 ): Coxa and trochanter yellow; all femora fulvous except forefemur with preapical dark spot. Foretibia fulvous, mid and hind tibia dark fuscous, tarsal segments fulvous.

Wing ( Fig. 16 ):Predominantly hyaline with an apical dark brown patch covering the apices of cells r1, r2+3, r4+5, and m; subapical band along crossvein DM-Cu fades beyond vein M, merges with the basal, yellow fumose area; faint infuscation along crossvein R-M present. Pterostigma light fuscous, yellow fumose area covers cell sc, r1 and r2+3. Apex of cell r4+5 without hyaline spot. Pterostigma about 5× as long as broad, R-M crossvein just below the apex of pterostigma; R1 setose, R4+5 setose to just beyond R-M; cell bcu with broad apical extension.

Abdomen ( Fig. 17 ): predominantly dark brown to black without any fulvous markings. Epandrium and surstylus as in Fig. 18 . Glans of phallus sclerotised, wide, with well developed acrophallus and subapical lobe ( Fig. 19 ).

Etymology: Named for its diffuse wing pattern.

Material examined: Holotype 3, INDIA: Karnataka, Sagara, Shimoga, 08.i.2006, Shivaprakash, T. H. M. Resting on Vanilla leaf (NBAII).

Remarks: This species falls in the chrysopila group defined by Hancock and Drew (2004) with apex of cell r4+5 devoid of hyaline spot. It differs from other Oriental species in the group by its diffuse wing pattern and an incomplete transverse band along crossvein DM-Cu.

Figures

FIGURES 14 – 19. Euphranta diffusa sp. nov. 14, thorax (dorsal view); 15, thorax (lateral view) and legs; 16, wing; 17, abdomen; 18, epandrium and surstyli (posterior view); 19, glans of phallus.