Protomedetera glabra, Tang, Chufei, Grootaert, Patrick & Yang, Ding, 2018

Tang, Chufei, Grootaert, Patrick & Yang, Ding, 2018, Protomedetera, a new genus from the Oriental and Australasian realms (Diptera, Dolichopodidae, Medeterinae), ZooKeys 743, pp. 137-151 : 142

Protomedetera glabra sp. n. Figs 5-6, 7-8

Diagnosis.

Pedicel with circlet of short bristles nearly as long as pedicel. Wing veins without any thickness. Cercus rhomboid, with row of long marginal bristles and one long apical bristle, covered by short weak peg-like bristles. Hypandrium simple, black apically.

Description.

Male (Fig. 5). Body length 1.3 mm, wing length 1.1 mm, wing width 0.6 mm.

Head metallic green, nearly black, with grey pollinosity; eyes separated; face nearly parallel, width of face at middle 0.6 times as wide as first flagellomere. Hairs and bristles on head black, postocular bristles and posteroventral hairs short pale. Two strong oc, two strong vt. Antenna wholly yellow except first flagellomere brownish at apex, scape and pedicel yellow; scape short and small, almost invisible; pedicel cup-like, large, with first flagellomere sunken in it, with circlet of short bristles nearly as long as pedicel; first flagellomere small, rounded, nearly as long as wide, with tiny pubescence; arista black, almost bare, nearly as long as head, with basal segment extremely short, less than 0.1 times length of apical segment. Ocellar tubercle distinct but not strongly raised. Upper postcranium deeply concave. Proboscis yellow, not strongly sclerotized, with light thin lines; palpus black, small, with black preapical bristle.

Thorax raised dorsally at front area, dark yellow without metallic gross, brownish at propleuron and mesopleuron, with some grey pollinosity. Mesonotum flat before scutellum. Hairs and bristles on thorax pale; two h, one ph, one su, two npl, two sa, one pt, two weak dc, six biseriate acr at anterior 1/2. Shoulder portion densely covered with short bristles. Scutellum with one pair of strong sc.

Legs wholly yellow without distinct bristle. Hind tarsomere I somewhat shortened and flat. Tibiae and five tarsomeres of legs LI: 3.0: 0.8: 0.5: 0.5: 0.4: 0.5; LII: 3.5: 1.3: 0.8: 0.6: 0.4: 0.5; LIII:4.5: 0.8: 1.2: 1.0: 0.5: 0.6. Wing nearly hyaline, tinged light yellow; veins light brown, R4+5 and M parallel. CuAx ratio 0.2. Squama pale with long pale hairs. Halter pale.

Abdomen metallic green with grey pollinosity. Hairs and bristles black. Hypopygium: simple, pale. Hairs and bristles pale. Epandrium (Figs 7-8) nearly rectangular, about twice as long as wide, with three long bristles; epandrial lobe indistinct but left three long bristles. Surstylus simple, with four bristles. Cercus rhomboid, with row of long marginal bristles and one long apical bristle, covered by short weak peg-like bristles. Hypandrium simple. Phallus inflate and dark apically.

Female (Fig. 6). Almost same to male, but body length 1.5 mm, wing length 1.2mm, wing width 0.7 mm.

Etymology.

The name glabra means bare, referring to the pedicel which has no long bristles and a simple hypandrium.

Material examined.

Holotype male: PAPUA NEW GUINEA, Baiteta (4°59'10.36"S, 145°45'47.05"E), FOG AR 14, 14/VI/1995, leg. Olivier Missa (in coll. RBINS).

Paratypes: PAPUA NEW GUINEA, same provenance as holotype: 1 male, FOG AR 13, 9/VI/1995; 1 male, FOG AR 9-3, 26/V/1995; SINGAPORE: 2 males, Sime forest, 8/IV/2005, leg. P. Grootaert (in coll. LKCNHM); 1 male, Clementi Woods, 23/IV/2005, drains, leg. I. Van de Velde; 1 female, Nee Soon, 27/IV/2005, leg. P. Grootaert; 1 male, Clementi woods, 25/VI/2005, drains, leg. I. Van de Velde (in coll. RBINS).