Zeugodacus (Zeugodacus) umiam David & Kennedy, 2024

David, Karamankodu Jacob, Abhishek, Venkateshaiah, Kennedy, Ningthoujam, Ajaykumara, K. M., Gracy, R. G. & Hissay, Cheday Bhutia, 2024, Four new species of Zeugodacus Hendel (Diptera, Tephritidae, Dacinae, Dacini) and new records of dacines from India, ZooKeys 1188, pp. 1-26 : 1

Zeugodacus (Zeugodacus) umiam David & Kennedy sp. nov.

Figs 93-101 , 102-109

Type locality.

India: Meghalaya, Umiam.

Type material.

Holotype female, pinned. Original label: "INDIA: Meghalaya, Umiam, 06.vii.2021. Kennedy N." Paratype,1♂, India, Meghalaya, Bhoirymbong, Umiam,10.v.2023, Kennedy N, attracted to cue lure (deposited at NIM).

Diagnosis.

Zeugodacus umiam is similar to Z. nigrifacies (Shiraki) in possessing black face, fore femur entirely black, scutellum with broad black basal band and an apical spot but can be differentiated by the absence of subapical band, band on crossvein r-m and two scutellar setae. It can be distinguished from Z. menglanus (Yu, Liu & Yang) by the facial markings (wholly black in male; dorsal half black in female), two scutellar setae and lack of apical expansion in costal band. It is similar to Z. diaphorus in possessing apical scutellar spot, two pairs of scutellar setae and black face, but can be separated by the presence of broad black basal band on scutellum, narrow anepisternal stripe not reaching anterior notopleural seta dorsally.

Description.

Female. Medium sized, black species (wing length 5.65 mm); face posterior half black; scutum black with narrow yellow lateral postsutural vitta and medial vitta, lateral vitta ending before postalar seta, notopleuron and postpronotal lobe yellow, small yellow spot anterior to notopleural suture, anepisternal stripe not reaching anterior notopleural seta dorsally, scutellum yellow with a broad black basal band, with an apical black spot; wing predominantly hyaline with costal band confluent with vein R2+3, expanded slightly towards apex of cell r2+3 and r4+5, anal streak prominent; abdomen oval, all tergites black except tergite 2 with a broad fulvous band posteriorly, narrow fulvous bands in tergites 3-5.

Head (Fig. 93 ): Height 1.32 mm. Frons length 1.2 × breadth; fuscous, all setae black: two pairs of frontal setae and one pair of orbital setae; lunule black. Ocellar triangle, vertex black, face black in distal half, scape (0.12 mm long) and pedicel (0.14 mm long) fulvous, first flagellomere (0.58 mm long) dark fuscous on outer side and apex, arista non plumose, combined length of pedicel and flagellomere as long as the vertical length of face. Gena fulvous with a black marking and a seta, occiput black; lateral and medial vertical setae present. Thorax (Figs 94 , 95 ): 2.18 mm long, 2.03 mm wide; scutum black with narrow yellow lateral postsutural vittae ending at postalar seta, medial vitta narrow. Yellow markings as follows: postpronotal lobe, notopleuron, anepisternal stripe reaching midway between notopleuron and anterior notopleural seta and continuing to katepisternum as a small transverse spot; anatergite (posterior apex black); anterior 3/5 of katatergite (remainder black). Scutellum yellow with a black basal band and an apical black spot, subscutellum black. Chaetotaxy: scutellar seta, 1; intra-alar seta, 1; postalar seta, 1; anepisternal seta, 1; anterior notopleural seta, 1; postsutural supra-alar seta,1; posterior notopleural seta, 1; scapular setae, 1. Leg (Fig. 95 ): Coxa, trochanter black, all femora with extensive fuscous markings; fore femur wholly black, 0.75 of mid femur and 0.50 of hind femur black; fore, mid and hind tibiae black, tarsal segments fulvous. Wing (Fig. 97 ): Length, 5.65 mm, cells bc and c hyaline; microtrichia in outer corner of cell c only; remainder of wing hyaline except dark fuscous cell sc, dark fuscous narrow costal band confluent with vein R2+3 expanded slightly towards apex, extension of cell cua as long as cell cua, base of cell br with microtrichia, anal streak prominent confined to cell cua, dense aggregation of microtrichia around A1+Cu2; supernumerary lobe weak. Abdomen (Fig. 96 ): 2.54 mm long, 2.01 mm wide, oval shaped, tergites free, tergite 1 black, tergite 2 black basally with broad fulvous band, tergites 3-5 black with narrow fulvous markings apically. Tergite 5 with prominent shining spots (ceromata).

Female genitalia. Oviscape dark brown (Fig. 98 ), conical (1.62 mm), spicules on distal end of eversible membrane (1.42 mm) with six or seven blunt spicules (Fig. 99 ), aculeus (1.07 mm) with apex trilobed (Fig. 100 ), spermatheca black, coiled (Fig. 17 ).

Male (Figs 102-106 ). Similar to female except for entirely black face, broad basal band on the scutellum, dense aggregation of microtrichia around A1+Cu2, black extensive markings on all femora and pecten on tergite 3.

Male genitalia. Sternite 5 black with shallow emargination, epandrium quadrate with lateral surstylus as long as epandrium, proctiger membranous, not inflated, epandrium sclerotised (Figs 107-108 ), as long as wide (height 0.31 mm; width 0.28 mm); surstyli slightly shorter than epandrium, oblique, 0.21 mm long; posterior lobe of surstylus 5 × longer than anterior lobe, aedeagus 1.93 mm long with glans of phallus (Fig. 109 ) 0.41 mm long. Three-quarters of glans heavily sclerotised with well-developed patterned acrophallus, praeputium, and subapical lobe.

Etymology.

The species name is type locality of the species and is a noun in apposition.

Host plant.

Not known.

Male parapheromone.

Cue lure.

Remarks.

This species is placed in Zeugodacus due to shallow/flat posterior emargination of sternite 5 in males, posterior lobe of lateral surstylus much longer than anterior lobe and patterned acrophallus. It is placed in subgenus Zeugodacus Zeugodacus as it possesses medial postsutural vitta, postsutural supra-alar and prescutellar acrostichal seta.

New distributional records

Figures

Figures 93 - 101. Female of Zeugodacus umiam David & Kennedy, sp. nov. 93 head (frontal view) 94 scutum (dorsal view) 95 thorax (lateral view) and legs 96 abdomen 97 wing 98 ovipositor 99 spicules on distal end of eversible membrane 100 aculeus 101 spermatheca.

Figures 102 - 109. Male of Zeugodacus umiam David & Kennedy, sp. nov. 102 head (frontal view) 103 scutum (dorsal view) 104 thorax (lateral view) and legs 105 abdomen 106 wing 107 epandrium and surstyli (lateral view) 108 epandrium and surstyli (posterior view) 109 glans of phallus.

Figures 9 - 20. Thorax (dorsal view) of Tephritidae 9 Z. incisus (Walker) 10 Z. gavisus (Munro) 11 Z. watersi (Hardy) 12 Z. brevipunctatus (David & Hancock) 13 Z. trilineatus (Hardy) 14 Z. scutellarius (Bezzi) 15 Z. scutellaris (Bezzi) 16 Z. fuscoalatus (Drew & Romig) 17 Z. caudatus (Fabricius) 18 Z. diversus (Coquillett) 19 Z. signatus (Hering) 20 Z. assamensis (White).