Austroascogaster sebastiani, Braet, 2016

Braet, Yves, 2016, New species and new records of Betylobraconinae, Braconinae, Cheloninae, Helconinae and Rogadinae (Hymenoptera: Braconidae) from Papua New Guinea, Mémoires du Muséum national d'Histoire naturelle 209, pp. 407-450 : 440-443

Austroascogaster sebastiani n. sp.

Figures 51-55

TYPE MATERIAL — Holotype female ( MNHN), Papua New Guinea. Province Madang, Wanang 3 station (-5.22767,145.0797) 175 m, 03-04/12/2012, leg Basset, Plot 3, understorey, Malaise, MAL-WAN03-D16 P4947. Paratypes, Papua New Guinea. Female ( IRSNB), Province Madang, Wanang 3 station (-5.22767,145.0797) 175 m, 23- 24/11/2012, leg Basset, Plot 1, understorey, Malaise, MAL-WAN01-D06 P4905. Female ( IRSNB), Province Madang, Mount Wilhelm (-5.741031,145.3294) 200 m, 31/ 10-01/11/2012, leg Dilu, Ray, Novotny, Leponce, Plot 2, understorey, Malaise, MAL-MW0200B-07/16-d07. Female ( IRSNB), Province Madang, Mount Wilhelm (-5.741031,145.3294) 200 m, 27-28/10/2012, leg Dilu, Ray, Novotny, Leponce, Plot 2, understorey, Malaise, MAL-MW0200B-03/16-d03. Female ( IRSNB), Province Madang, Mount Wilhelm (-5.731961,145.2522) 700 m, 27-28/10/2012, leg Keltim, Uma, Novotny, Leponce, Plot 4, understorey, Malaise, MAL-MW0700D-03/16-d03. Female ( IRSNB), Province Madang, Mount Wilhelm (-5.732698,145.2556) 700 m, 26-27/10/2012, leg Keltim, Uma, Novotny, Leponce, Plot 2, understorey, Malaise, MAL-MW0700B-02/16-d02. Female ( IRSNB), Province Madang, Mount Wilhelm (-5.732514,145.2568) 700 m, 30- 31/10/2012, leg Keltim, Uma, Novotny, Leponce, Plot 3, understorey, Malaise, MAL-MW0700C-06/16-d06.

DISTRIBUTION — Papua New Guinea.

DIAGNOSIS — Antenna swollen around flagellomeres 5-11; wings hyaline, only weakly infuscate near pterostigma; vein r emitted near middle of pterostigma.

FIGURES 51-53

Austroascogaster sebastiani n. sp., paratype,female. 51, habitus,lateral; 52, head, face; 53, metasoma,apical.Scales: 51 = 500 µm; 52-53 = 200 µm.

DESCRIPTION (Holotype) — FEMALE: body length 2.7 mm, length of fore wing 2.2 mm. Head. Antenna shorter than body, with 17 flagellomeres; F1/F2 = 1.10; length of first, second and penultimate flagellomeres 4.40, 4.00 and 1.00x their width, respectively; ED/TD = 3.00; eyes glabrous; OOL:OD:POL = 8.00:2.00:5.00; frons densely punctate-rugulose laterally, smooth medially with a median longitudinal carina; WF/HF = 1.67; MS/BM = 1.80; clypeus, face, gena and vertex finely punctate; WC/HC = 1.86. Mesosoma. Mesoscutum punctate; mid-posterior area of mesoscutum areolate-rugulose; notauli present, punctate but weakly developed anteriorly; scutellum shiny, finely punctate, weakly convex; propodeum rugose, with short longitudinal and cross carinae, anterior areola wide with a median irregular ruga, lateral carinated areas also with some rugae inside; mesopleuron largely foveolate near subalar depression, shiny and smooth mid-posteriorly; precoxal sulcus present and largely foveolate; HMS/LMS = 0.83. Legs. Hind coxa finely punctate laterally, smooth dorsally; LHTI/LHTA = 1.10; LPS/LHBT = 0.38. Wings. LW/LB =0.81; fore wing with SR1/PT =1.25; LPT/WPT =3.33; r: 3-SR: SR1: r-m = 4.00:5.00:25.00:4.00. Metasoma. LMS/LMT = 0.85; in dorsal view rounded, wider medially than anteriorly, WMT/LMT = 0.62; metasoma weakly curved in lateral view; ventral keel of metasoma narrow, sinuate apically in posterior view; metasoma longitudinally rugose on anterior three-quarter, its apical quarter finely punctate and shining. Color. Body black except: palps, spurs all trochanters, all tarsi except telotarsi, fore tibia, mid coxa, basal 0.30 of mid tibia, basal 0.20 of hind tibia, large medioanterior patch on metasoma, white; tegula, telotarsi, antenna dark brown to brown; wings hyaline with a brownish spot below the pterostigma.

VARIATIONS — Body length 2.6-3.0 mm, fore wing 2.2-2.4 mm; tegula varying from brown to white with outer edge brownish.

ETYMOLOGY — This species is named in honor of my nephew, Sebastian Braet.