Palpostilpnus mangrovi, Reshchikov & Santos & Liu & Barthélémy, 2019

Reshchikov, Alexey, Santos, Bernardo F., Liu, Jing-Xian & Barthélémy, Christophe, 2019, Review of Palpostilpnus Aubert (Hymenoptera, Ichneumonidae, Phygadeuontinae), with the description of ten new species, European Journal of Taxonomy 582, pp. 1-63 : 21-24

publication ID

https://doi.org/ 10.5852/ejt.2019.582

publication LSID

lsid:zoobank.org:pub:6DF295A1-1E15-454A-B122-AE4AB4553D17

persistent identifier

https://treatment.plazi.org/id/A751D18B-92A7-455E-ABA0-203AF40E1C01

taxon LSID

lsid:zoobank.org:act:A751D18B-92A7-455E-ABA0-203AF40E1C01

treatment provided by

Plazi

scientific name

Palpostilpnus mangrovi
status

sp. nov.

Palpostilpnus mangrovi sp. nov.

urn:lsid:zoobank.org:act:A751D18B-92A7-455E-ABA0-203AF40E1C01

Figs 11–12 View Fig View Fig

Diagnosis

Body obliquely elongate ( Fig. 11A View Fig ). Postero-ocellar distance 2.0 times as long as ocular-ocellar distance ( Fig. 12D View Fig ). Occipital carina complete. Epomia indistinct. Epicnemial carina very short, defined only in lower portion of mesopleuron. Propodeal carinae absent, except forming area petiolaris ( Fig. 12B View Fig ). T1 1.8 times as long as apically broad ( Fig. 11C View Fig ). Fore wing infuscate in middle ( Fig. 12E View Fig ).

Etymology

The specific epithet refers to the habitat in which this species was collected.

Material examined

Holotype

SINGAPORE • ♀; Nee Soon Swamp Forest ; 1°23′00.3″ N, 103°48′46.5″ E; Malaise trap (NS1); 27 Jun. – 3 Jul. 2013; NUS leg.; barcode: ZRC_30042; LKCNHM. GoogleMaps

Paratypes

SINGAPORE • 1 ♀; Nee Soon Swamp Forest ; 1°23′04.2″ N, 103°48′40.7″ E; Malaise trap (NS2); 13– 20 Jun. 2012; NUS leg.; barcode: ZRC_BDP0029983; NHRS PT-HEVA000010858 GoogleMaps 1 ♀; Bukit Timah ; 1.35127° N, 103.78161° E; maturing secondary forest; Malaise trap (BT09); 20– 27 Jul. 2017; NUS leg.; barcode: ZRC_BDP0018400; LKCNHM GoogleMaps 1 ♀; Nee Soon Swamp Forest ; 1°23′07.83″ N, 103°48′39.48″ E; Malaise trap #3; 13–20 Mar. 2006; K.I. Yeo leg.; RBINS GoogleMaps .

Description

Female

SIZE. Fore wing length 2.3 mm. Body oblique elongate, 1.50 times as long as high ( Fig. 11A View Fig ).

HEAD. Face 1.5 times as broad as high, with moderately dense setae, longitudinally slightly convex centrally, forming rectangular area; with fine granulose texture, impunctate; sublateral portion slightly longitudinally concave ( Fig. 11B View Fig ). Clypeal suture indistinct. Clypeus slightly convex, matte, apically straight (not evenly convex downwards), with sharp apical margin. Mandible basally with granulose texture; teeth sharp, upper tooth slightly broader than lower tooth. Malar space smooth, 1.5 times as long as mandibular width. Gena glossy, smooth. Vertex coarsely punctate, distance between punctures 0.5–2.0 times diameter of puncture, posterior portion from behind ocelli to occipital carina slanted almost vertically, slightly concave ( Fig. 12D View Fig ). Frons with fine leathery texture, lower portion slightly concave. Postero-ocellar distance 3.0 times as long as ocular-ocellar distance. Antenna slightly longer than body, with 25 flagellomeres, median portion slightly thickened ( Fig. 11A View Fig ). Occipital carina complete, tapered upwards.

MESOSOMA. Pronotum coarsely punctate dorsally, smooth and shining ventrally. Epomia indistinct. Mesoscutum ovoid, 0.87 times as long as broad, comparatively convex, with coarse dense punctures. Notaulus indistinct. Scutellum evenly convex, with coarse dense punctures. Postscutellum transverse, smooth. Mesopleuron smooth, polished, shallowly and sparsely punctate, pubescent with white setae. Epicnemial carina very short, defined only on lower portion of mesopleuron. Sternaulus indistinct. Metapleuron very long and narrow, with distinct shallow punctures, distance between punctures 0.2–3.0 times diameter of punctures. Juxtacoxal carina distinct. Submetapleural carina complete. Fore wing with 1cu-a distad of M becoming Rs by 0.6 of length of 1cu-a, 3rs-m absent, distal abscissa of M spectral; ramulus present; length of vein Cu slightly longer than 2cu-a ( Fig. 12E View Fig ). Hind wing with cu-a strongly inclivous and interrupted at lower 0.1. Distal abscissa of Cu pigmented. Distal abscissa of 1Cu spectral. Inner profile of basal portion of fore basitarsus distinctly bent. Hind coxa with fine uneven punctures. Hind femur stout, 4 times as long as its maximum width ( Fig. 12C View Fig ). Basal portion of hind tibia slender, gradually thick toward apex. Longer spur of hind tibia 0.5 times as long as hind basitarsus. Propodeum steeply sloping from near anterior margin to posterior end in lateral view, sparsely and coarsely punctate ( Fig. 12B View Fig ). Propodeal carinae partly present, forming trapezoidal combined area superomedia and area petiolaris ( Fig. 12B View Fig ).

METASOMA. T1 1.8 times as long as apically broad, smooth, petiole flat; postpetiole broad, without median dorsal carina or dorsolateral carina; ventrolateral carina weak; spiracle small, round, slightly

convex ( Fig. 11C View Fig ). T2 coarsely and sparsely punctate, with distinct gastrocoelus ( Fig. 12A View Fig ). T3 coarsely and sparsely punctate ( Fig. 12A View Fig ). Ovipositor thin, 1.4 times as long as hind basitarsus ( Fig. 12C View Fig ).

COLOUR. Body mostly black. Scape, pedicel, first and second flagellomeres ventrally, T1 (except postpetiole black), anterior half of T2, fore margin of T3 and dorsal part of hind femur pale yellow, and tegula and legs (except hind trochanter, ventral part of hind femur and apical part of hind tibia black) white. Wings infuscate in middle.

Male

Unknown.

Remarks

Palpostilpnus mangrovi sp. nov. is similar to P. striator Aubert, 1961 and P. papuator ( Aubert, 1961) but can be distinguished from them by the following combination of characters: scutellum without wrinkles ( Fig. 11D View Fig ); body coarsely punctate ( Fig. 11A View Fig ); hind coxa, T1 and T2 partly yellowish ( Fig. 11A View Fig ); hind tarsus white ( Fig. 11A View Fig ); antenna with scape pale yellow, flagellomeres 1–3 varying from yellow to brown ( Fig. 11A View Fig ). Palpostilpnus striator and P. papuator have strong wrinkles on the scutellum; the body is rather polished and impunctate; hind coxa, tarsus and metasoma are black; middle flagellomeres of the antenna are coloured white dorsally.

Distribution

Singapore.

NHRS

Swedish Museum of Natural History, Entomology Collections

RBINS

Royal Belgian Institute of Natural Sciences

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