Clistopyga declinata Palacio & Bordera, 2019

Palacio, Edgard, Bordera, Santiago & Díaz, Francisco, 2019, The Neotropical species of Clistopyga (Hymenoptera, Ichneumonidae, Pimplinae) Part III: the C. henryi species group, with the description of three new species, Zootaxa 4563 (1), pp. 103-118 : 108-112

Clistopyga declinata Palacio & Bordera sp. nov.

( Figs 4 A–F, 7B, 8B, C)

Diagnosis. Clistopyga declinata sp. nov. can be distinguished from all other Neotropical species of the C. henryi species group by the combination of the following characters: ovipositor evenly down-curved at distal 0.4 ( Fig. 4D ); submetapleural carina incomplete, only present at anterior 0.3–0.5 ( Fig. 7B ); hind wing with distal abscissa of Cu 1 well pigmented; metapleuron and propodeum laterally red ( Fig. 4B ); tergites II to VIII predominantly black ( Figs 4C, F ).

Description. Female: Body length 8.9–13.1 mm. Fore wing length 6.7–9.6 mm.

Head (4A, B, E). In dorsal view, moderately narrowed behind eyes. Gena smooth and shiny with sparse setiferous punctures, in dorsal view 0.18–0.22× as long as eye, in frontal view slightly concave and constricted below eyes ( Fig. 4A ). Frons smooth and shiny. Vertex smooth and shiny, with isolated setiferous punctures. Posterior ocellus separated from eye 0.88˗0.94× its maximum diameter. Distance between hind ocelli 0.95–1.05× maximum diameter of posterior ocellus. Occipital carina complete, not raised in the lower lateral region of head in a flange-like protuberance. Face with fine and dense setiferous punctures, distance between punctures more than twice the diameter of punctures. Clypeal suture strongly curved. Clypeus 1.4–1.5× as broad as medially long, distinctly convex in dorsal half, flat in ventral half, with apical margin straight to slightly concave ( Fig. 4A ). Malar space 0.6–0.7× as long as basal mandibular width, with a granulate stripe between eye and mandible. Antenna with 25–27 flagellomeres, first flagellomere 8.0–9.0× as long as wide.

Mesosoma ( Figs 4B, E , 7B ). Pronotum shiny, mostly smooth, with fine and scattered setiferous punctures in upper posterior part. Mesoscutum entirely smooth and shiny, with fine and sparse setiferous punctures ( Fig. 4B ). Notauli deep, reaching about 0.4 of length of mesoscutum ( Fig. 4E ). Mesopleuron shiny, with moderately sparse setiferous punctures, except in posterior part under speculum. Subalar prominence with 7–11 setiferous punctures. Epicnemial carina weak, its dorsal end slightly curved backward, ending at level of centre of pronotum. Metapleuron shiny, glabrous, except for some sparse setiferous punctures at posterior part, 1.65–1.85× as long as deep. Submetapleural carina incomplete, present at anterior 0.3–0.5 ( Fig. 7B ). Propodeum smooth and shiny, with sparse and fine setiferous punctures laterally; in dorsal view 1.01–1.12× as long as medially wide. Propodeal spiracle clearly above groove separating propodeum and metapleuron, groove not interrupted by spiracle ( Fig. 4B ). Hind leg with femur 4.70–4.95× as long as deep, 0.80–0.95× as long as tibia.

Wings. Fore wing with vein cu-a opposite to Rs & M. Vein 2 rs-m 0.4–0.5× as long as abscissa of M between 2 rsm and 2 m-cu. Abscissa of Cu 1 between 1 m-cu and Cu 1 a 1.4–1.5× as long as Cu 1 b. Hind wing with vein cu-a 0.55– 0.60× as long as abscissa of Cu 1 between M and cu-a; vein cu-a reclivous, abscissa of Cu 1 vertical and straight; distal abscissa of Cu 1 well pigmented.

Metasoma ( Figs 4C, D, F , 8B, C ). Tergite I 1.18–1.50× as long as posteriorly broad ( Figs 8B, C ), smooth and shiny, with fine and relatively dense setiferous punctures laterally; spiracle near its basal 0.4; lateromedian longitudinal carinae weak, reaching about 0.3 of length of tergite; lateral longitudinal carinae weak, reaching about 0.35 of length of tergite. Sternite I extending back 0.35–0.45 of length of tergite. Tergite II 1.05–1.10× as long as posteriorly broad, central region shiny, with very fine and moderately sparse setiferous punctures; rest of tergites shiny, progressively more densely and strongly punctate. Ovipositor slender, evenly down-curved at distal 0.4 ( Fig. 4D ), 2.7–3.0 times × as long as hind tibia. Ovipositor sheath about 2.4× as long as hind tibia, length of setae on average about 1.5× the sheath basal width.

Colouration. Head black with clypeus, frontal, facial orbits widely and vertical orbits, and mouth parts, except apex of mandibles, white ( Figs 4A, B, E ); antenna with scape and pedicel black, widely white on the outer side, flagellomeres brown, the basal ones pallid on the outer side. Mesosoma mostly orange, upper and lower corner of pronotum anteriorly, propleuron posteriorly, tegula, scutellum posteriorly, metanotum dorsally and posterodorsal corners of propodeum whitish; propleuron anteriorly and apex of propodeum black ( Figs 4B, E ). Metasoma mostly black, with transverse white bands on tergites I to VI and whitish areas on anterolateral corners of tergites I to III ( Figs 4C, F , 8B, C ); tergites II to VI with posterolateral black to blackish spots posterior to transverse white bands ( Figs 4C, F ). Fore and mid legs predominantly whitish, middle coxae laterally and proximally black, middle trochanters proximally black, femora and tibia dorsally striped with black and tarsi infuscate; hind leg white, coxa laterally and proximally black, trochanter proximally black, femur dorsally and externally striped with black, tibia slightly infuscate, dorsally striped with black, tarsi infuscate. Wings hyaline, pterostigma brown.

Male: unknown.

Remarks: This species shows considerable variation in the proportions of tergite I ( Figs 8B, C ) and propodeum that seems to be correlated with body size. Larger individuals tend to have more robust propodeum and tergite I, while the smaller ones have the propodeum and tergite I slender.

Etymology: The specific name refers to the distinctly down-curved ovipositor.

Type material. Holotype. Colombia: 1 ♀, Magdalena, PNN Sierra Nevada de Santa Marta, Betoma , 10 o 48´N, 73 o 39´W, 1700m, Malaise trap, 15 Jun-2 Jul 2001, coll. J. Cantillo (IAvh-E).

Paratypes. Colombia: 1 ♀, same data as holotype, 7 May–2 Jun 2001 (IAvh-E) ; 2 ♀, Magdalena, PNN Sierra Nevada de Santa Marta, Bella Vista , 10 o 48´N, 73 o 39´W, 1500m, Malaise trap, 7 May–1 Jun 2001, coll. J. Cantillo (IAvh-E) ; 3 ♀, same locality and trap type, 1–15 Jun 2001, coll. J. Cantillo (IAvh-E) ; 1 ♀, same locality and trap type, 15 Jun–2 Jul 2001, coll. J. Cantillo (IAvh-E) .

Distribution: Colombia.

Figures

FIGURE 4. C. declinata Palacio & Bordera sp. nov., holotype, ♀. A. Head, frontal view. B. Head and mesosoma, lateral view. C. Metasoma, lateral view. D. Ovipositor. E. Head and mesosoma, dorsal view. F. Metasoma, dorsal view. Scale bar: 0.5 mm.

FIGURE 7. Clistopyga spp., metapleuron, ♀. A. C. carinata Bordera & Palacio sp. nov., holotype. B. C. declinata Palacio & Bordera sp. nov., holotype. C. C. henryi Gauld, paratype. D. C. teresitae Díaz, Palacio & Bordera sp. nov., paratype. Scale bar: 0.3 mm.

FIGURE 8. Clistopyga spp., tergite I, ♀. A. C. carinata Bordera & Palacio sp. nov., holotype. B–C. C. declinata Palacio & Bordera sp. nov., holotype and paratype, respectively. D. C. henryi Gauld, paratype. E–F. C. teresitae Díaz, Palacio & Bordera sp. nov., paratype and holotype, respectively. Scale bar: 0.3 mm.