Nyereria ganges Rousse et Gupta

Rousse, Pascal & Gupta, Ankita, 2013, Microgastrinae (Hymenoptera: Braconidae) of Reunion Island: a catalogue of the local species, including 18 new taxa and a key to species, Zootaxa 3616 (6), pp. 501-547 : 536-538

Nyereria ganges Rousse et Gupta , sp. nov.

( Fig. 17 c–d)

Diagnosis. Ventral margin of clypeus concave. Pronotum partially punctate with lower furrow. Scutellum densely and deeply punctate. Propodeum with a mid-longitudinal carina and an incomplete areola. Hind coxa entirely punctate. Tergum 2 with two sub-median wide and foveolate grooves delimiting a median rectangular area.

Color. Head and mesosoma black but palpi, mandible and clypeus pale yellow, clypeus yellowish orange, and antenna brownish. Legs yellowish orange but hind tarsi and apex of hind tibia infuscate. Terga 1–2 testaceous brown to black, tergum 2 laterally yellowish orange. Latero-tergites 1–2 pale yellow. Remainder of metasoma yellowish-orange to dark brown, extreme apex dark. Wings hyaline with venation light brown.

Description.

FEMALE (3 specimens). B: 2.8; A: 3.3; L: 3.2 (2.7–3.2).

Head. Entirely moderately setose. Clypeus dorsally weakly separated from face, ventral margin concave. Clypeus and face densely and shallowly punctate. H i: 0.8 EH i: 0.6; C i: 3.8; Fl 1i: 2.4; Fl 2i: 2.6; FL1– 2 i: 1.0; Fl 15i: 1.8; Fl 16i: 1.7; OO i: 1.7; IO i: 1.3.

Mesosoma . Pronotum densely punctate on postero-dorsal corner, upper furrow very thin, lower furrow very wide and crenulate. Anterior third of mesopleuron densely punctate, polished posteriorly, sternaulus moderately deep. Metapleuron polished with some punctures posteriorly, anterior pit deep. Entire mesonotum densely and deeply punctate with no trace of notauli. Scuto-scutellar suture thin, crenulate. MSC i: 0.7. Propodeum coarsely rugose with a strong mid-longitudinal carina on basal half, and an incomplete areola on apical half, the areola apically truncate and not defined basally to the usually strong costulae. Fore wing. R1/Pl i: 1.2; r/Pw i: 1.1; r/2Rs i: 1.3. Hind wing. Vannal lobe regularly rounded, hind margin with long hairs on basal third, the pilosity shorter apically. Legs. Hind coxa entirely finely and densely punctate. Cx/T 1i: 1.6; F i: 3.9.

Metasoma. Tergum 1 slightly narrowed basally, surface straite, moderately bulging mid-longitudinally. Tergum 2 trapezoidal, apical margin slightly concave, surface laterally smooth with two wide sub-median foveolate grooves delimiting a rectangular and aciculate median area. Hypopygium slightly protruding beyond metasomal apex, evenly sclerotised. Ovipositor very short, sheath almost entirely concealed within hypopygium. T1a i: 1.5; T1b i: 1.9; T1/T 2i: 1.7; T2a i: 0.4; T2b i: 0.9; T2/T 3i: 1.4; OT i: << 0.1.

MALE (9 specimens). B: 2.3; A: 3.3; L: 3.0 (2.6–3.1). Antenna longer than female. Fl 1i: 2.4; Fl 2i: 2.9; FL1– 2 i: 1.1; Fl 15i: 2.0; Fl 16i: 2.5.

Material examined. HOLOTYPE Ƥ (MNHN EY8822) Verbatim label data: La Réunion ML158 350 m Saint Philippe, Mare Longue, Forêt primaire piège Malaise au sol site 2, 2/ 8.VIII.2001 Attié Marc leg.; complete. PARATYPES (MNHN EY8823–8825) 233 St Paul / Tan Rouge, alt. 800m, II.2011, leg. Cirad; 1Ƥ St Leu / Colimaçons, alt. 260m, I.2011, leg. P. Rousse. Other material 433 same location, XII.2001, leg. Cirad; 13 St Pierre / Bassin Martin, alt. 290m, VI.2011, leg. Cirad; 1Ƥ La Possession / Grande Chaloupe, alt. 610m, V.2009, leg. IDR; 13 Petite Ile / Piton Bloc, alt. 850m, IV.2007, leg. Cirad; 13 Ste Suzanne / Forêt Dugain, alt. 860m, XII.2001, leg. Cirad.

Etymology. The species is named after the river Ganges (or “Ganga” in Hindi). The 2,525 km river rises in the western Himalayas, and flows south and east through the Gangetic Plain of North India into Bangladesh, where it empties into the Bay of Bengal.

Distribution records. Reunion.

Figures

FIGURE 17. Nyereria spp. a: N. mayurus sp. nov., female, habitus; b: N. mayurus, terga 1 – 3; c: N. ganges sp. nov., female, habitus; d: N. ganges, propodeum and terga 1 – 2.