Pararhabdepyris balios Azevedo & Barbosa

Azevedo, Celso O. & Barbosa, Diego N., 2010, Two new species Pararhabdepyris Gorbatovskii (Hymenoptera, Bethylidae) from Australia and Thailand, Zootaxa 2668, pp. 55-62 : 56-58

Pararhabdepyris balios Azevedo & Barbosa sp. nov.

( Figs. 1–6 )

Diagnosis. Mandible with one sharpened apical tooth; eye sparsely setose; malar groove complete; mesoscutum without parapsidal furrow; scutellum with scutellar groove wide and trabeculate; propodeal disc with seven carinae, median carina complete and others incomplete, sublateral carina present but inconspicuous, lateral carina present; mesopleuron with only mesopleural fovea present; metasoma with tergite II with a pair of half-moon shaped spots at anterior sublateral portion.

Description. Holotype ( Fig. 1 ). Female. Body 2.26 mm. LFW 1.63 mm.

Color. Head dark castaneous; scape and pedicel light castaneous; flagellum castaneous; mandible light castaneous; palpi light castaneous; mesosoma almost dark castaneous nearly black with pronotum castaneous and scutellum dark castaneous; tegula light castaneous; wings clear hyaline; wing venation light castaneous; coxa, trochanters, femur, tibia, and tarsi light castaneous; metasoma dark castaneous.

Head ( Fig. 2 ). Mandible with one sharpened apical tooth. Clypeus with shortly projected median lobe, apical margin angulated, lateral lobe absent, median clypeal carina arched and fused with median lobe. Distance inter-torular more than torulus diameter. Antenna with 12 segments, insertion higher than clypeal carina and with sub-erect pubescence present; scape straight, same diameter around your entire extension; pedicel longer than wide; flagellomeres about as long as wide, except for last one which is about 2.0x as long as wide. Eye oval, most placed on dorsal half of head in lateral view and sparsely setose. Frons coriaceous, hairy. First four antennal segments in a ratio of about 25:11:9:10. WH 1.25x LH. WF 1.3x HE. WF 0.6x WH. OOL 1.0x WOT. VOL 0.22x HE. Distance of posterior ocellus to vertex crest 0.25x DAO. Frontal angle of ocellar triangle acute; ocelli small; ocellar triangle compact (distance between inner edge of posterior ocelli 1.5x DAO). Temple divergent anterad. Vertex straight. Corner rounded. Malar space with longitudinal groove complete, from base of mandible to eye margin. Occipital carina absent. Gena coriaceous, completely separated from each other by median carina. Hypostomal carina forming acute angle. Palpal formula 4:1; segments with flattened cross section, widened distally, apices with few short setae.

Mesosoma ( Figs. 3–4 ). Pronotal disc 0.7x as long as wide, coriaceous, trapezoidal, side slightly concave. Anterior margin of pronotal disc oblique in profile. Mesoscutum coriaceous; notaulus complete, convergent posteriorly and well impressed; parapsidal furrow absent. Scutellum coriaceous; touching propodeal disc; scutellar groove wide and trabeculate. Propodeal disc 0.75x as long as wide, areolate at 3/4 of disc; with seven carinae; median carina complete; inner discal carinae incomplete; second pair of discal carina incomplete; outer discal carina incomplete; sublateral carina present but inconspicuous; lateral carina present and conspicuous, followed by short striae; posterior carina complete; spiracle elliptical, placed below lateral carina anteriorly. Declivity of propodeum weakly areolate at anterior half and strigate at posterior half; median carina present. Lateral surface of propodeum strigate. Mesopleuron weakly areolate and strigate at episternal furrow region; with subtegular fovea continuous with episternal furrow; anterior fovea absent; mesopleural fovea closed; central pit strong; lower fovea absent; posterior fovea absent; episternal furrow with inner margin striate. Propleuron rectangular in ventral view. Prosternum small. Pleurosternum separated from each other by narrow groove.

Wings ( Fig. 5 ). Forewing elongate, 2.7x as long as its maximum width, dorsal face setose, margin densely fringed, except medially, with three closed cells; costal cell very narrow and longitudinally folded, not visible in full dorsal view; costal vein as narrow as subcostal vein; median cell almost triangular; submedian cell almost rectangular; median cell 1.1x as long as submedian cell; prostigma and pterostigma not separated from each other; radial vein slightly curved forward. Hind wing with costal vein short; dorsal face setose, lower margin densely fringed; with three hamuli, proximal hamulus separated from the others.

Legs. Femora dilated; trochanter clearly strong; hind tibia elongate, 5.5x as long as wide; spur of fore tibia strong; tarsal formula 5:5:5; tarsi elongate; tarsal claw simple and arched, apex sharp.

Metasoma. Metasoma 2.11x longer than wide, not petiolate, first and second tergites with a pair of conspicuous lateral spiracles; tergite II longer than others, with a pair of half-moon shaped spots at anterior sublateral portion ( Fig. 6 ); segments III–VI with few setae at posterior margin.

Material Examined. Holotype. AUSTRALIA, 14.4 Km NE Ingham, N. Q., 8.vii.1971, Z. Liepa, ( ANIC).

Distribution. Australia.

Etymology. The specific epithet balios , from Greek, means “spot”, and refers to a pair of half-moon shaped spots at the anterior sublateral area of metasoma.

Figures

FIGURES 1 – 6. Pararhabdepyris balios sp. nov. Holotype. 1. Habitus 2. Head in dorsal view; 3. Mesosoma in dorsal view; 4. Mesosoma in lateral view; 5. Forewing in dorsal view; 6. Metasoma in dorsal view. (scale bars 300 µm).