Euphranta dysoxyli 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 : 441-443

Euphranta dysoxyli David , sp. nov.

( Figs 1–13 )

Description. Female. Body length, 9.3–9.8 mm, wing length, 8.2–8.9 mm.

Head ( Fig. 1 ): slightly higher than long, with three frontal setae, single orbital seta, both acuminate, ocellar setae absent or minute, 1 lateral and medial vertical seta each and a row of black, thin postocular setae present. Frons yellow or fulvous with median dark band from orbital seta to lunule. Antenna shorter than face, first flagellomere slightly fuscous, reaching 0.75 of the face; arista short plumose. Face fulvous with longitudinal black band along the antennal fovea; gena, parafacial and occiput yellow.

Thorax ( Figs 2 & 3 ): Scutum 3.3–3.7 mm long and 2.3–2.7 mm wide, brownish to black in ground colour with broad yellow medial vitta throughout the length of scutum and lateral vittae from transverse suture to scutellum. Postpronotal lobe, notopleuron yellow. Thorax with a full complement of setae: 2 scapular, 1 postpronotal, 1 anterior notopleural, 1 posterior notopleural, 1 postsutural supra-alar, 1 postalar, 1 intra-alar, 1 prescutellar acrostichal, 2 anepisternal and 1 katepisternal seta with the exception of dorsocentral seta which is weakly developed in the type specimen. Scutellum yellow with two pairs of scutellar setae, subscutellum and mediotergite brown/black. Anepisternal stripe yellow, broad and triangular reaching postpronotal lobe. Anepisternum partly yellow and black, katepisternum black. Anatergite brown with fine erect hairs; 0.66 of katatergite yellow.

Legs ( Fig. 3 ). Coxa and trochanter yellow; forefemur yellow with stout ventral spines and elongate preapical black spot; midfemur basal half fuscous; 0.75 of hindfemur dark fuscous. Tibiae and tarsi with rows of black setulae, foretibia fulvous with rows of setulae, midtibia black basally and fulvous towards the apex, hindtibia black. Wing ( Fig. 4 ) 8.2–8.9 mm long and 2.8–3.0 mm wide, nearly as long as body excluding the ovipositor, hyaline with 4 transverse bands and apical hyaline spot, bracing apices of R2+3 and R4+5. Subcostal band and discal band narrowly connected near anterior margin. Subcostal band crossing wing from base of Rs through cell bm to vein A1+Cu2. Discal band widening from subcostal cell to posterior margin along R-M crossvein. Subapical band over crossvein DM-Cu, narrower than discal band, continuous and fused with preapical band near anterior margin.

Abdomen ( Fig. 5 ): 4.0– 4.5 mm long and 2.1–2.2 mm wide, tergites 1–5 yellow with extensive basal fuscous markings which expand laterally. Oviscape black, 3 mm long,> 2× longer than wide. Eversible membrane 4.25 mm, aculeus 1.5 mm long ( Fig. 7 ), with single preapical indentation and three pairs of subapical setulae. Only two elongate and broadly conical ( Fig. 8 ) spermathecae (0.375 mm long) found.

Male ( Figs 6, 9–10 ): Fitting description of female except 2 frontal setae present. Epandrium and surstylus as in Fig. 9 ; glans of phallus membranous and weakly sclerotized, pointed and hood like ( Fig. 10 ).

3rd instar larva: Cephalopharyngeal skeleton ( Fig. 11 ): Mandible black, heavily sclerotised pointed towards apex. Ventral apodeme broad and perpendicular to dorsal margin of mandible. Dorsal apodeme projecting backward, hypopharyngeal sclerite black and heavily sclerotised with hypopharyngeal bridge beyond the centre of hypopharyngeal sclerite. Labial sclerite prominent, ventral bridge of pharyngeal sclerite absent. Parastomal bar of pharyngeal sclerite reaching midway of hypopharyngeal sclerite. Dorsal bridge pointed, anterior sclerite present. Pharyngeal sclerite is produced into unbranched dorsal cornua and single branched ventral cornua. Spiracles: Anterior spiracle ( Fig. 12 ) with 36 tubules in two rows; posterior spiracle ( Fig. 13 ) sclerotised, with three slits, each slit nearly 3.5 times as long as wide. Dorsal and ventral spiracular bundles with 5–10 hairs per group; lateral spiracular bundles with 2–8 hairs per bundle.

Host plant: Dysoxylum malabaricum Bedd. (Meliaceae) .

Material examined: Holotype Ƥ, INDIA: Karnataka, Makuta, 28.v.2005 coll. Sipra Acharya, ex seeds of Dysoxylum malabaricum (UASB). Paratypes: INDIA: 13 and 2Ƥ, Karnataka, Sirsi, 9.viii.2008, coll. Manivannan, ex seeds of D. malabaricum ; 1Ƥ, Karnataka, Makuta, 28.v.2005 coll. Sipra Acharya, ex seeds of D. malabaricum ; 2 3 and 1Ƥ, Karnataka, Coorg, vii. 2009, Ravi (UASB).

Etymology: The species name is derived of, and is the host plant name, Dysoxylum , in genitivus.

Remarks: This species is very similar to E. corticicola (Hering) and E. haldwanica Hancock and Goodger , sp. nov., but differs from E. corticicola in having one instead of three preapical indentations on the aculeus and from E. haldwanica in having a single preapical indentation on the aculeus and broad discal and subapical bands on the wing.

Figures

FIGURES 1 – 4. Euphranta dysoxyli sp. nov. 1, head; 2, thorax (dorsal view); 3, thorax (lateral view) and legs; 4, wing.

FIGURES 5 – 10. Euphranta dysoxyli sp. nov. 5, abdomen (Female); 6, abdomen (Male); 7, aculeus tip; 8, spermatheca; 9, epandrium and surstyli (posterior view); 10, glans of phallus.

FIGURES 11 – 13. IIIrd instar larva of Euphranta dysoxyli sp. nov. 11, Cephalopharyngeal skeleton; 12, Anterior spiracle; 13, Posterior spiracle.