Neorthostigma macrops (Stelfox & Graham , 1951 ) Peris-Felipo & Stigenberg & Quicke & Belokobylskij, 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 macrops (Stelfox & Graham, 1951) comb. nov.

Figs 5 , 6 , 7

Aspilota macrops Stelfox and Graham 1951: 3; Tobias 1962: 106; 1986: 123; Fischer 1972: 409; Shenefelt 1974: 976; Yu et al. 2016; Belokobylskij et al. 2019: 208.

Neorthostigma macrops : Belokobylskij and Tobias 2007: 10.

Neorthostigma eoum Belokobylskij 1998: 9, syn. nov.; Fischer 2001: 65; Belokobylskij and Tobias 2007: 10; Yu et al. 2016; Belokobylskij et al. 2019: 215.

Orthostigma (Neorthostigma) eoum : Wharton 2002: 91.

Type material of Aspilota macrops

(Figs 5A , 5B ). Holotype: female, Ireland, Sligo, S. shore of Lough Gill near Doonee Rock, 15.x.1937 (AWS leg.) [USNM #76022; USNMENT 01569377] (NMNH).

Type material of Neorthostigma eoum

(Figs 5C - 7A ). Holotype: female, Russia, Primorskiy kray, Anisimovka, forest, 16.viii.1979 (S. Belokobylskij leg.) (ZISP). Paratypes: Russia: 2 females, Primorskiy kray, Spassk-Dal’niy, forest, glades, 16 and 22-23.viii.1995 (S. Belokobylskij leg.) (ZISP); 1 female, Sakhalin Island, 10 km W of Aniva, mixed forest, 15.viii.1981 (S. Belokobylskij leg.) (ZISP). Japan: 1 male, Fukuoka, Nogochi, Fukuoka-shi, 28.viii.1992 (V. Makarkin leg.) (ZISP).

Additional studied material.

Norway. 1 female, Oslo [AK], Maridalen, Dausjøen, Spruce forest , 5.vi-16.x.2010, 60.01234 N 10.787665 E, 160 m, Malaise trap, river outlet (Lars Ove Hansen leg.) (NHMO) .

Russia. Leningradskaya Province : 1 female, Tolmachevo , mixed forest, 22.VIII. 1960 (V. Tobias leg), " Aspilota macrops Stelf., Tobias det. 1961" (ZISP). Primorskiy kray : 1 female, 30 km E of Spassk-Dal’niy, forest, glades, 4.vi.1984 (S. Belokobylskij leg.) (ZISP); 1 female, Nadezhdinskiy District , 15 km SSW of Nezhino, forest, 16-18.vii.1993 (S. Belokobylskij leg.) (ZISP) ; 1 female, 30 km SE of Ussuriysk , forest, border of forest, 12-17.vii.2001 (S. Belokobylskij leg.) (ZISP) ; 1 female, Vladivostok, Okeanskaya , forest, 25.vii.2001 (S. Belokobylskij leg.) (ZISP) ; 1 female, Vladivostok, Sedanka , forest, border of forest, 30.vii.2001 (S. Belokobylskij leg.) (ZISP) .

Re-description.

Female (holotype).

Length. Body 2.6 mm, fore wing 3.3 mm, hind wing 2.1 mm.

Head. In dorsal view, 1.9 times as wide as long, 1.2 times as wide as mesoscutum; smooth, with temple rounded behind eyes. Antenna 27-segmented, 1.3 times as long as body. Scape 3.0 times as long as pedicel. First flagellar segment 2.6 times as long as its apical width, 1.3 times as long as second segment. Second to 25th (apical) segments 1.6-2.0 times as long as their maximum width. Eye in lateral view 1.6 times as high as wide and 1.9 times as wide as temple medially. POL 1.1 times OD; OOL 2.7 times OD. Face 1.5 times as wide as high; inner margins of eyes subparallel, with numerous setae, with numerous sparse punctation. Clypeus 2.5 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; middle tooth rather wide and short, directed forwards, longer than lower tooth; lower tooth wide and rounded distally, not 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, entirely densely setose. Notauli mainly absent on horizontal surface of mesoscutum. Mesoscutal pit absent. Prescutellar depression smooth, with median and lateral carinae, almost twice as long as its maximum width. Precoxal sulcus present, crenulate, reaching anterior margin and not reaching posterior margin of mesopleuron. Posterior mesopleural furrow smooth. Propodeum largely rugulose, smooth anteriorly and postero-laterally, with some longitudinal and transverse carinae, with wide rugose areola delineated by distinct carinae. Propodeal spiracles relatively small, its diameter 0.2 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, 4.4 times as long as its maximum width. Vein 3-SR 2.5 times as long as vein 2-SR. Vein SR1 2.0 times as long as vein 3-SR. Vein 3-SR 4.7 times as long as vein r. Vein r much longer than width of pterostigma. First subdiscal cell 1.9 times as long as its maximum width. Hind wing 5.0 times as long as its maximum width.

Legs. Hind femur 3.9 times as long as its maximum width. Hind tibia weakly widened to apex, 8.8 times as long as its maximum (subapical) width, 1.1 times as long as hind tarsus. First segment of hind tarsus 1.7 times as long as second segment.

Metasoma. First tergite weakly and evenly widened towards apex, 1.7 times as long as its apical width, entirely densely rugose-reticulate. Ovipositor 1.5 times as long as first tergite, 0.5 times as long as metasoma, approximately as long as hind femur.

Colour. Body black or dark reddish brown. Antenna black, paler basally; two basal segments light brown. Legs entirely light brown, but hind tibia finely infuscate apically. Wings hyaline.

Variation. Body length 1.9-2.7 mm; fore wing length 2.3-3.3 mm; hind wing length 1.8-2.1 mm. Antenna 20-27 segments, 0.9-1.2 times as long as body. First flagellar segment in lateral view 2.7-3.5 times as long as maximum subapical width, 1.4-1.7 times as long as second segment. Face 1.2-1.5 times as wide as high, often with weak medial vertical carina in upper half, but sometimes this carina rather distinct; laterally usually with scattered row of orbital setae, but sometimes these setae very sparse; clypeus sometimes with only a few setae. Mandible 1.3-1.5 times as long as its maximum width. Mesoscutum almost entirely in dense, long and white setae, but often sublaterally with narrow or rather wide glabrous areas. Propodeum with areola often entirely densely and rather coarsely rugose-striate, but sometimes this sculpture fine to very fine, and as exception areola entirely almost smooth; basolateral areas smooth at least in basal half or two thirds, but rarely at most part; propodeum postero-laterally often with small smooth areas. Precoxal sulcus often distinctly crenulate, but sometimes crenulae fine and anteriorly almost indistinct. In fore wing, vein 3-SR 3.2-4.8 times as long as vein r, 2.0-2.6 times as long as vein 2-SR. First submarginal cell 2.7-2.9 times as long as maximum width; First subdiscal cell 1.9-2.6 times as long as its maximum width. Vein 3-CU1 usually straight, but sometimes weakly and evenly curved. Hind femur 3.7-4.1 times as long as its maximum width. First metasomal tergite 1.45-1.70 times as long as apical width. Ovipositor 1.3-1.6 times as long as first tergite. Body often brown or reddish brown, rarely almost entirely black with scape and pedicel of antenna darkened; legs may be infuscate, light reddish brown to almost reddish brown.

Male. Body length 2.3 mm; fore wing length 2.0 mm. Otherwise similar to female.

Comparative diagnosis.

This species is similar to N. brachyclypeata (Fischer, 1978) and N. braeti sp. nov., but differs from them in having precoxal sulcus reaching anterior margin of mesopleuron (not reaching in N. brachyclypeata and N. braeti ), mesoscutum almost entirely densely setose (glabrous laterally and very sparsely setose medially in N. brachyclypeata and N. braeti ), and lower (third) tooth of mandible rather wide (narrow in N. brachyclypeata and N. braeti ).

Distribution.

Ireland, Japan (Kyushu Island), Netherlands, Norway (new record), Russia (Leningradskaya Province, Primorskiy Territory, Sakhalin Island), Slovakia, United Kingdom.

Remarks.

We studied the photos of the holotype of Aspilota macrops (female, "Ireland, Sligo, S. shore of Lough Gill near Doonee Rock, 15.X.1937, A.W. Stelfox; Smithsonian Institute, Washington) (http://n2t.net/ark:/65665/36930ade8-ba26-4c84-967b-7484f2b81346) (Figs 5A , 5B ). These illustrations together with originally well described and figured species ( Stelfox and Graham 1951) and additional material from Norway and Russia (Far East and North West of the European part) showed morphological identity of A. macrops and N. eoum together with distinct variability of some their morphological characters (see Variation section in re-description). As result of this study Neorthostigma eoum Belokobylskij 1998 is here synonymised with Aspilota macrops Stelfox and Graham 1951 (syn. nov.).

Figures

Figure 5. Neorthostigma macrops (Stelfox & Graham, 1951) (A, B female, holotype of A. macrops; C-F female, holotype of Neorthostigma eoum) A, C habitus, lateral view B habitus, dorsal view D head and mesosoma, lateral view E mandible F antenna.

Figure 6. Neorthostigma macrops (Stelfox & Graham, 1951) (A-F: female, holotype of Neorthostigma eoum) A head, frontal view B head and mesonotum, dorsal view C propodeum, dorsal view D first metasomal tergite, dorsal view E hind leg, metasoma and ovipositor, lateral view F fore and hind wings.

Figure 7. Propodeum variation of Neorthostigma macrops (Stelfox & Graham, 1951) (A female, holotype of Neorthostigma eoum; B-D additional material).