Clistopyga nigriventris Palacio

Palacio, Edgard, Bordera, Santiago, Sääksjärvi, Ilari E. & Díaz, Francisco, 2018, The Neotropical species of Clistopyga (Hymenoptera, Ichneumonidae, Pimplinae). Part II: the C. isayae species group, with the description of seven new species, Zootaxa 4442 (1), pp. 101-121: 110-112

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Clistopyga nigriventris Palacio

sp. nov.

Clistopyga nigriventris Palacio  sp. nov.

( Figs 5A–J View Figure , 9C View Figure )

Diagnosis. Clistopyga nigriventris  sp. nov. can be distinguished from all other species of the C. isayae  species group by the combination of the following characters: metasomal tergites entirely black ( Figs 5E, J View Figure ); scutellum completely orange red ( Figs 5D, I View Figure ); posterior ocellus separated from eye 1.13–1.20 × its maximum diameter; subalar prominence densely punctuate, with at least 23 setiferous punctures epicnemial carina relatively strong; propodeal spiracle situated immediately above groove separating propodeum and metapleuron, groove continuous ( Fig. 5D View Figure ); tergite I 1.3–1.4 × as long as posteriorly broad ( Fig. 9C View Figure ).

Description. Female: Body length 9.2–11.3 mm. Fore wing length 7.0– 8.3 mm.

Head ( Figs 5A–C View Figure ). In dorsal view, weakly narrowed behind eyes. Gena smooth and shiny with uniformly sparse setiferous punctures, in dorsal view 0.33–0.35 × as long as eye ( Fig. 5C View Figure ), in frontal view almost straight and moderately constricted below eyes. Frons smooth and shiny. Vertex smooth and shiny, with very isolated setiferous punctures. Posterior ocellus separated from eye 1.13–1.20 × its maximum diameter ( Fig. 5C View Figure ). Distance between hind ocelli 0.96–1.01 × maximum diameter of posterior ocellus. Occipital carina completely absent. Face with fine and dense setiferous punctures, distance between punctures more than twice the diameter of punctures. Clypeal suture slightly curved ( Fig. 5B View Figure ). Clypeus 1.76–1.78 × as broad as medially long, distinctly convex in dorsal half, flat in ventral half, with apical margin bilobate. Malar space 0.82–0.86 × as long as basal mandibular width, with a granulate stripe between eye and mandible ( Figs 5A, 5B View Figure ). Antenna with 25–26 flagellomeres, first flagellomere 6.0–6.7 × as long as wide.

Mesosoma  ( Figs 5D, 5I View Figure ). Pronotum shiny, mostly smooth, with fine and scattered setiferous punctures in upper posterior part. Mesoscutum entirely smooth and shiny, with fine, short and very sparse setiferous punctures. Notauli weak, reaching about 0.38 of length of mesoscutum ( Fig. 5I View Figure ). Mesopleuron shiny, with moderately sparse setiferous punctures, except in posterior part under speculum. Subalar prominence densely punctate, with about 23–42 setiferous punctures. Epicnemial carina relatively strong, its dorsal end weakly curved backward, ending slightly above level of centre of pronotum. Metapleuron shiny, glabrous, except for some sparse setiferous punctures at posterior end, 2.6–2.9 × as long as deep. Propodeum smooth and shiny, with sparse and fine setiferous punctures laterally; in dorsal view 1.2–1.4 × as long as medially wide. Propodeal spiracle situated immediately above groove separating propodeum and metapleuron, groove continuous ( Fig. 5D View Figure ). Hind leg with femur 3.93– 4.15 × as long as deep, 0.93–0.99 × as long as tibia.

Wings ( Figs 5G–H View Figure ). Fore wing with vein cu-a opposite or slightly distal to Rs & M. Vein 2 rs-m about 0.24–0.28 × as long as abscissa of M between 2 rs-m and 2 m-cu. Abscissa of Cu 1 between 1 m-cu and Cu 1 a 1.39–1.41 × as long as Cu 1 b ( Fig. 5G View Figure ). Hind wing with vein cu-a about 0.24 × as long as abscissa of Cu 1 between M and cu-a ( Fig. 5H View Figure ). Vein cu-a reclivous, abscissa of Cu 1 vertical and slightly curved. Vein Cu 1 well pigmented.

Metasoma ( Fig 5E–F, 5J View Figure , 9C View Figure ). Tergite I 1.3–1.4 × as long as posteriorly broad ( Fig. 9C View Figure ), smooth and shiny, with fine and relatively dense setiferous punctures laterally; spiracle near its basal 0.4; lateromedian longitudinal carinae strong, reaching about 0.2 of length of tergite; lateral longitudinal carinae strong, reaching about 0.2 of length of tergite. Sternite I extending back about 0.4 of length of tergite. Tergite II 1.15–1.37 × as long as posteriorly broad ( Fig. 5J View Figure ), central region shiny, with very fine and moderately sparse setiferous punctures; rest of tergites shiny, progressively more densely and strongly punctate. Ovipositor slender, shiny, very weakly upcurved at distal 0.2, 2.6–2.9 × as long as hind tibia ( Fig. 5F View Figure ). Ovipositor sheath about 2.0 × as long as hind tibia, length of setae on average about 1.3 × the sheath basal width.

Colouration. Head black with clypeus, frontal orbits widely, base of antennal sockets, lower gena, and mouthparts, except apex of mandibles, white; antenna brownish, ventrally pallid towards base, pedicel and apex of scape ventrally white ( Figs 5A–C View Figure ). Mesosoma  with mesoscutum, scutellum, and most of pronotum orange red; metanotum, anterior margin of pronotum and subalar prominence whitish yellow; propleuron, most of mesopleuron, metapleuron and most of propodeum black; lower half of mesopleuron anteriorly, mesepimeron, and sides of propodeum white ( Figs 5D, I View Figure ). Metasoma with tergites entirely black ( Figs 5E, J View Figure ); ovipositor sheath black. Fore end middle legs white with coxae proximally and posteriorly black and femora and tibiae black striped dorsally; hind leg white with coxa proximally and laterally, trochanter proximally, and femur and tibia laterally black; hind tarsal segments blackish. Wings hyaline, pterostigma blackish brown.

Male: unknown.

Etymology. The specific name refers to the entirely black tergites of metasoma that distinguish this species from all the other members of the isayae  species-group.

Type material. Holotype 1 ♀: Colombia, Boyacá, Arcabuco, SFF Iguaque, El Níspero , 0 5o 38´N, 73o31´W, 2730m, Malaise trap, 10 Jan–3 Feb 2001, coll. P. Reina ( IAVHAbout IAVH). 

Paratype: 1 ♀, same locality and trap type, 2˗18 Feb 2002, coll. P. Reina ( IAVHAbout IAVH). 

Distribution: Colombia.


Instituto de Ivestigacion de los Recursos Biologicos Alexander von Humboldt