Neorthostigma braeti Peris-Felipo, 2020

Peris-Felipo, Francisco Javier, Stigenberg, Julia, Quicke, Donald L. J. & Belokobylskij, Sergey A., 2020, Revision of Neorthostigma Belokobylskij, 1998 (Hymenoptera, Braconidae, Alysiinae) with description of a new species from Papua New Guinea, Journal of Hymenoptera Research 80, pp. 31-47 : 31

Neorthostigma braeti Peris-Felipo sp. nov.

Figs 3 , 4

Type material.

Holotype: female, Papua New Guinea, Mt Wilhelm, UTM (-5.731961, 145-2522), 700 m, 17-18.v.2013, understorey, Coll. by Sam et al., site: MW0700-01, P4705, vial: 20833, MAL-MW0700'A-05/16-d05 (MNHM).

Paratypes: 19 females, same location as holotype but: 2 females, 200 m, 1-2.11.2012; MAL-MW0200'C-08/16-d08 (MNHM); 1 female, MW0700-03, P4737, vial: 20837, MAL-MW0700'C-05/16-d05, voucher ID: JP_110, GenBank ID: MW191729 (MNHM); 1 female, MW0700-03, P4753, vial: 20839, MAL-MW0700'D-05/16-d05, voucher ID: JP_113, GenBank ID: MW191732 (MNHM); 2 females, MW0700-04, P4737, vial: 20837, MAL-MW0700'C-05/16-d05, voucher ID: JP_112, GenBank ID: MW191731 (MNHM); 3 females, MW0700-04, P4737, vial: 20839, MAL-MW0700'D-05/16-d05 (MNHM, ZISP); 2 females, 200 m, 20-21.v.2013; MAL-MW0200'B-08/16-d08 (MNHM); 2 females, 22-23.v.2013, P4742, vial: 20873, MAL-MW0700'C-10/16-d10 (PFEC); 1 female, 22-23.v.2013, P4758, vial: 20624, MAL-MW0700'D-10/16-d10, voucher ID: JP_111, GenBank ID: MW191730 (MNHM); 1 female, 22-23.v.2013, P4742, MAL-MW0700D-09/16-d09, voucher ID: JP_127, GenBank ID: MW191733 (MNHM); 5 females, 175 m, 20-25.xi.2012; MAL-MAN-D-07/16-d07 (leg. Basset) (MNHM; ZISP).

Description.

Female (holotype).

Length. Body 2.0 mm, fore wing 2.4 mm, hind wing 1.5 mm.

Head. In dorsal view, 1.9 times as wide as long, 1.3-1.4 times as wide as mesoscutum, smooth, with temple rounded behind eyes. Antenna 24-segmented, 1.2 times as long as body. Scape 2.0 times as long as pedicel. First flagellar segment 2.3 times as long as its apical width, 1.3 times as long as second segment. Second flagellar segment 1.8 times, third to 22th (apical) segments 1.6-1.8 times as long as their maximum width. Eye in lateral view 1.6 times as high as wide and 1.6 times as wide as temple medially. POL 0.9 times OD; OOL 2.7 times OD. Face 1.4 times as wide as high, with sparse setae, punctate-rugulose medially; inner margins of eyes subparallel. Clypeus 2.8 times as wide as high, slightly concave ventrally. Mandible almost parallel-sided, 1.4 times as long as its maximum width. Upper tooth very small and obtuse; middle tooth rather narrow and as long as lower tooth, weakly directed upwards; lower tooth narrow, distinctly angulated ventro-distally, with several long outstanding curved setae.

Mesosoma. In lateral view 1.1 times as long as high. Mesoscutum (dorsal view) 0.9 times as long as its maximum width, smooth, sparsely setose. Notauli mainly absent on horizontal surface of mesoscutum. Prescutellar depression smooth, with median and lateral carinae, 1.3-1.4 times as long as its maximum width. Precoxal sulcus present, crenulate, long, almost reaching anterior margin but not reaching posterior margin of mesopleuron. Posterior mesopleural furrow almost smooth. Propodeum with large, wide and mainly smooth pentagonal areola; basolateral areas smooth, sparsely rugose close to carinae. Propodeal spiracles medium-sized, diameter 0.3 times distance from spiracle to anterior margin of propodeum.

Wings. Fore wing 2.3 times as long as its maximum width. Marginal cell ending at apex of wing, 3.9 times as long as its maximum width. Vein 3-SR 2.0 times as long as vein 2-SR. Vein SR1 2.4 times as long as vein 3-SR. Vein 3-SR 3.1 times as long as vein r. Vein r much longer than pterostigma width. First subdiscal cell 2.5 times as long as its maximum width. Hind wing 5.0 times as long as its maximum width.

Legs. Hind femur 4.0 times as long as its maximum width. Hind tibia weakly widened to apex, 7.8 times as long as its maximum subapical width, about as long as hind tarsus. First segment of hind tarsus 1.7 times as long as second segment.

Metasoma. First tergite widened towards apex, 1.8 times as long as its apical width, sparsely striate mainly but rugose in medio-basal half. Ovipositor 1.5 times as long as first tergite, 0.5 times metasoma, approximately as long as hind femur.

Colour. Body, hind femur and tibia, flagellar segments of antenna and pterostigma dark brown to black. Mandible, fore and middle legs and hind tarsus light reddish brown to reddish brown. First metasomal tergite similar colour to second and third tergites. Wings almost hyaline.

Variation. Body length 1.9-2.3 mm, fore wing length 2.1-2.6 mm, hind wing length 1.4-1.6 mm. Antenna 24-27-segmented. First flagellar segment 2.2-2.4 times as long as its maximum width. Hind femur 3.9-4.0 times as long as its maximum width. Hind tibia 7.5-8.0 times as long as its maximum subapical width. First metasomal tergite 1.8-1.9 times as long as its apical width.

Male. Unknown.

Etymology.

Named in honor of Dr Yves Braet, Belgian braconidologist.

Comparative diagnosis.

Differs from N. brachyclypeata as indicated in the key to species (see below).

Figures

Figure 3. Neorthostigma braeti Peris-Felipo, sp. nov. (female, holotype) A habitus, lateral view B head and mesosoma, lateral view C mandible D antenna E head, frontal view F head and mesonotum, dorsal view.

Figure 4. Neorthostigma braeti Peris-Felipo, sp. nov. (female, holotype) A propodeum, dorsal view B first metasomal tergite, dorsal view C hind leg, metasoma and ovipositor, lateral view D fore and hind wings.