Spathiophaenodus annae, Belokobylskij, Sergey A. & Villemant, Claire, 2016

Belokobylskij, Sergey A. & Villemant, Claire, 2016, A new genus of the tribe Pambolini (Hymenoptera: Braconidae: Exothecinae) from the Papua New Guinea with a key to the World genera, Zootaxa 4098 (2), pp. 383-391 : 388-389

Spathiophaenodus annae sp. nov.

( Figs 1–19 )

Type material. Holotype: female, “ Papua New Guinea, Province Madang, Mount Wilhelm, 1700m (–5.759269, 145.2356), 8–10.XI.2012, leg. Valeba, Tulei, Novotny, Leponce; understorey, FIT-MW1700J-1/8-d01” ( MNHN). Paratypes. 1 male, with same label as holotype ( ZISP); 1 male, “ Papua New Guinea, Province Madang, Mount Wilhelm, 1700m (–5.759269, 145.2356), 25–26.X.2012, leg. Valeba, Tulei, Novotny, Leponce; Plot 4, understorey, Malaise—MAL-MW1700-D-01/16-d01” ( MNHN); 1 male, “ Papua New Guinea, Province Madang, Mount Wilhelm, 1200m (–5.720874, 145.2695), 3–5.XI.2012, leg. Philip, Alois, Novotny, Leponce; understorey, FIT- MW1200-M-5/8-d10” ( ZISP).

Description. Female. Body length 2.7 mm; fore wing length 2.4 mm.

Head width 1.7 × its median length (dorsal view), 1.2 × width of mesoscutum. Head behind eyes (dorsal view) weakly convex anteriorly, distinctly roundly narrowed posteriorly. Transverse diameter of eye 1.1 × length of temple. Ocelli in triangle with base 1.1 × its sides, posterior ocelli situated at level of posterior margin of eye. POL equal to Od, 0.4 × OOL. Eye 1.1 × as high as broad. Malar space 0.8 × height of eye, almost 2.0 × basal width of mandible. Face width 1.5 × height of eye and almost equal to height of face and clypeus combined. Hypoclypeal depression width 0.7 × distance from edge of depression to eye, 0.45 × width of face. Head below eyes (front view) strongly roundly narrowed.

Antennae slender, filiform, 27-segmented. Scape 1.9 × longer than its maximum width, 2.1 × longer than maximum length of pedicel; its dorsal margin (lateral view) about twice longer than ventral margin. First flagellar segment 4.5 × longer than its apical width, 1.1 × longer than second segment. Penultimate segment 2.5 × longer than wide, 0.55 × as long as first segment, 0.9 × as long as apical segment.

Mesosoma. Length 1.6 × its height. Notauli shallow. Prescutellar depression with three coarse carinae, weakly rugulose, 0.4 × as long as scutellum. Scutellum length weakly shorter than its maximum anterior width. Subalar depression with sparse coarse striae and fine rugulosity between them. Sternaulus running along anterior 0.7 of lower part of mesopleuron. Propodeum strongly oblique (lateral view); its spines (thorns) 0.35 × as long as petiole.

Wings. Fore wing 2.9 × longer than its maximum width. Pterostigma rather wide, 3.5 × longer than wide. Radial (marginal) cell 2.8 × longer than its maximum width. Metacarp (1-R1) 1.7 × longer than pterostigma. First radial abscissa (r) 0.9 × as long as maximum width of pterostigma. Second radial abscissa (3-SR) 2.0 × longer than first abscissa (r), 0.3 × as long as the weakly curved third abscissa (SR1), almost as long as first radiomedial vein (2-SR). Second radiomedial (submarginal) cell 2.4 × longer than its maximum width, 1.2 × longer than discoidal (first discal) cell. Recurrent vein (m-cu) 3.5 × longer than second abscissa of medial vein (2-SR+M), 0.6 × as long as first radiomedial vein (2-SR). Distance from nervulus (cu-a) to basal vein (1-M) 0.8 × nervulus (cu-a) length.

Hind wing 5.0 × longer than wide. First abscissa of costal vein (C+SC+R) 0.7 × as long as second abscissa (1- SC+R). First abscissa of mediocubital vein (M+CU) 0.5 × as long as second abscissa (1M). Recurrent vein (m-cu) short, faintly pigmented.

Legs. Hind femur 5.6 × longer than wide. Hind tarsus 0.9 × as long as hind tibia. Hind basitarsus 0.5 × as long as second-fifth segments combined. Second tarsal segment 0.45 × as long as basitarsus, 0.6 × as long as fifth segment (without pretarsus).

Metasoma 1.1 × longer than mesosoma. Petiole with distinct spiracular tubercles on median widening, weakly and twice curvedly widened from base to apex (dorsal view). Maximum width of petiole 1.6 × its width on level of spiracles, 2.0 × its minimum width; length 1.7 × its apical width, 1.25 × length of propodeum. Median length of second and third tergites combined 2.2 × basal width of second tergite, 1.2 × their maximum width. Ovipositor straight, its sheath 0.6 × as long as petiole, 0.9 × as long as hind basitarsus, about twice longer than propodeal spine (thorn).

Sculpture and pubescence. Head mainly smooth, very weakly rugulose in ocellar triangle and around antennal sockets. Side of pronotum smooth in its wide area, rugose-striate anteriorly and below and coarsely crenulate along its median curved furrow. Mesonotum and mesopleuron mainly smooth. Metapleuron entirely coarsely rugoseareolate. Propodeum mostly reticulate-rugulose, smooth basally, its basolateral areas distinctly delineated by carinae, medium-sized, smooth but with rugosity along carinae; areola rather large, subpentagonal, 1.2 × longer than wide; basal carina very short. Hind coxa mainly sparsely punctate, finely transversely aciculate dorsally. Hind femur densely rugulose-reticulate, almost smooth apically. First tergite entirely densely longitudinally striate with reticulation between striae. Remaining tergites smooth. Vertex with long, very sparse and almost erect setae, glabrous medially. Mesosoma mostly glabrous, with long sparse and almost erect setae arranged along notauli and laterally. Mesopleuron mainly glabrous. Hind tibia dorsally with long dense and semi-erect setae, its length 0.7–1.2 × maximum width of tibia.

Colour. Body mainly black, head dark reddish brown, metasoma behind petiole reddish brown, but light reddish brown posteriorly and below. Antenna black in basal half, reddish brown to light reddish brown in apical half. Palpi pale yellow, distinctly infuscate basally. Tegulae dark reddish brown. Legs dark reddish brown but pale distally, all tarsi brownish yellow or yellow except darkened last segments. Ovipositor sheath dark brown, pale basally and apically. Fore wing distinctly and almost evenly infuscate. Pterostigma dark brown, pale on very short distances basally and apically.

Male. Body length 1.9–3.0 mm; fore wing length 2.0– 2.8 mm. Antennae 30-segmented. Scape 1.5–1.6 × longer than its maximum width, 1.7–1.8 × longer than maximum length of pedicel. First flagellar segment 3.8–4.0 × longer than its apical width, almost as long as second segment. Penultimate segment 3.0 × longer than wide. Length of mesosoma 1.4–1.7 × its height. Propodeal spines (thorns) usually shorter, 0.2–0.3 × as long as petiole. Propodeum mostly smooth in anterior half. Fore wing 2.8–3.1 × longer than its maximum width. Pterostigma paler, narrow, 4.5–5.0 × longer than wide. Metacarp (1-R1) 1.3–1.4 × longer than pterostigma. Second radial abscissa (3- SR) 1.4–2.0 × longer than first abscissa (r), 0.25–0.30 × as long as third abscissa (SR1), 0.7–0.8 × as long as first radiomedial vein (2-SR). Second radiomedial (submarginal) cell 1.9–2.1 × longer than its maximum width, 1.1 × longer than discoidal (first subdiscal) cell. Distance from nervulus (cu-a) to basal vein (1-M) 1.0–1.5 × nervulus (cu-a) length. Rarely present short and pigmented brachial vein (CU1b). Hind wing 4.6–4.7 × longer than wide. Hind femur 4.0–4.5 × longer than wide. Hind basitarsus 0.6–0.7 × as long as second-fifth segments combined. Second tarsal segment 0.35 × as long as basitarsus, 0.7–0.8 × as long as fifth segment (without pretarsus). Maximum width of metasomal petiole 1.2–1.7 × its width on level of spiracles, 1.5–1.9 × its minimum width; length 1.7–2.7 × its apical width. Median length of second and third tergites combined 2.6–3.2 × basal width of second tergite, 1.4–1.7 × their maximum width. Metasoma behind petiole entirely dark reddish brown. Otherwise similar to female.

Etymology. This species is named in honour of Anna, the daughter of the first author.

Figures

FIGURES 1 – 12. Spathiophaenodus annae gen. et sp. nov. (female, holotype). 1, Body, lateral view. 2, Body, dorsal view. 3, Head, front view. 4, Head and palpi, lateral view. 5, Head, dorsal view. 6, Basal segments of antenna. 7, Apical segments of antenna. 8, Mesosoma, lateral view. 9, Mesosoma, dorsal view. 10, Propodeum and first metasomal tergite, dorsal view. 11, Tarsus of hind leg. 12, Hind leg (without tarsus).

FIGURES 13 – 19. Spathiophaenodus annae gen. et sp. nov. (13, 14, 16, 18, 19, female, holotype; 15, 17, male, paratype). 13, Fore wing. 14, Hind wing. 15, Median part of fore wing. 16, Metasoma, lateral view. 17, 19, First metasomal tergite (petiole), dorsal view. 18, Metasoma, dorsal view.