Chileana Janšta & Křížková, 2013

Janšta, Petr, Křížková, Barbora, Vilímová, Jitka & Rasplus, Jean-Yves, 2013, Description of a new genus, Chileana (Hymenoptera: Chalcidoidea: Torymidae), with four new species, Zootaxa 3745 (1), pp. 49-63 : 50-52

Chileana Janšta & Křížková , gen. nov.

Figs 1–32

Type species. Chileana cyanea Janšta & Křížková , by present designation

Etymology. The genus name is derived from the country of origin, Chile.

Diagnosis. Chileana is readily distinguished from other torymid genera based on several characters, as follows: antenna with one anellus and clava without micropilosity; occipital carina well developed, with ventrolateral edges extending below an imaginary line drawn across dorsum of hypostoma, not touching hypostomal carina, and with dorsum of carina midway between posterior ocelli and occipital foramen ( Fig. 5 ); scutellum with well developed frenum usually well delimited by frenal line and shiny or at most alutaceous; propodeum about 0.3–0.4× as long as broad, with mostly complete medial carina and at most two submedial carinae; metasternum with interior coxal carinae joining medial edge of propodeal foramen and continuing to anterior margin of plate; metasternal area narrowly longitudinal, subequal in length to diameter of propodeal foramen; anterior edge of propodeal foramen nearer posterior edge of hind coxal foramen than anterior edge; fore wing venation consisting of long marginal vein, relatively long postmarginal, and short stigmal vein; marginal vein 2–3× as long as postmarginal vein and 4–6× as long as stigmal vein; stigma with relatively long uncus; hind femur usually with long distinct tooth in distal quarter; Gt1–Gt3 usually emarginate medially; and ovipositor 0.6–1.2× as long as body excluding sheaths.

Description. FEMALE. Body length excluding ovipositor 1.9–6 mm; length of ovipositor 1.9–6.5 mm. Scape, pedicel, head, mesosoma including propodeum, coxae, femora and metasoma blue-green to green-coppery with blue-violet or coppery metallic tints ( Figs 1 , 10 , 19 , 26 ). Flagellum, tibiae and ovipositor sheaths mostly brown, but sometimes tibiae with metallic tint. Tarsal segments pale brown to brown; tibial spurs yellow to pale brown. Wing venation and setae brown. Head and mesosoma dorsally generally alutaceous.

Head. Broader than high and broader than mesosoma. Antennae situated relatively low on head, with ventral margins of toruli touching or slightly higher than hypothetical line drawn between ventral margins of eyes; scape longer than broad, rarely reaching ventral margin of anterior ocellus; single anellus present; funicle with all segments longer than wide, with two or three rows of MPS. Clypeus slightly protruding with straight or nearly straight clypeal margin ( Figs 3 , 12 ). Malar sulcus conspicuous. Occipital carina well developed, with ventrolateral edges extending below an imaginary line drawn across dorsum of hypostoma, not touching hypostomal carina, and dorsum of carina midway between posterior ocelli and occipital foramen ( Fig. 5 ).

Mesosoma. Pronotum 1.3–2× as broad as long. Collar well developed but not delimited by pronotal carina, wider than greatest breadth of middle lobe of mesonotum, but narrower than breadth of mesonotum. Notauli and axillae well developed ( Figs 6 , 15 ). Scutellum with frenum developed and usually smooth and shiny, sometimes with slight alutaceous sculpture; scutellum distally surrounded by foveate strip ( Figs 6, 7 , 32 ). Upper mesepimeron entirely smooth and shiny with foveate or elongated transepimeral sulcus. Dorsal surface of mesosoma with dense pilosity, the setae short and brown. Propodeum 0.3–0.4× as long as broad, shiny, with 1–3 median carinae; sides of propodeum with thin, long, erect setae. Metasternum with interior coxal carina joining medial edge of propodeal foramen and continuing to anterior margin of plate; metasternal area narrowly longitudinal, subequal in length to diameter of propodeal foramen. Anterior edge of propodeal foramen closer to posterior edge of hind coxal foramen than to anterior edge. Fore wing and hind wing hyaline or sometimes fore wing slightly infumate or with brown maculae on disc, but wing venation and setae brown; marginal vein 2–3× as long as postmarginal vein and 4–6× as long as stigmal vein; stigmal vein usually 0.4–0.65× length of postmarginal vein; stigma with relatively long uncus. Hind leg with coxa relatively long, 0.64–0.88× as long as femur; length of tibial spur variable, but at most 0.7× as long as basitarsus, and inserted at or slightly before apex of tibia.

Metasoma. About 0.7–1.2× as long as mesosoma, in lateral view oval and in dorsal view narrower than mesosoma; at most with Gt1–Gt3 deeply emarginate medially. Petiole short, dorsally transverse. Hypopygium reaching at least 0.8× length of metasoma ( Figs 10 , 19 ). Ovipositor at least 1.3× as long as metasoma, ovipositor index not less than 2.19.

MALE. Only males of C. cyanea and C. maculata are known. They are similar to females and differ by the scape being at most 2.2× as long as broad, the metasoma is nearly as long as the mesosoma, and Gt1–Gt3 are at most slightly emarginate. The single known male of C. maculata has a shallow hollow on each side of the upper part of the upper face, below the posterior ocelli ( Fig. 17 ).

Figures

FIGURES 1 – 5. Chileana cyanea, female: 1, habitus, lateral view; 2, head, frontal view; 3, head, frontal view; 4, fore wing; 5, head, occipitolateral view.

FIGURES 6 – 9. 6 – 7, Chileana cyanea, female: 6, head and mesosoma, dorsal view; 7, propodeum, dorsal view. 8 – 9, C. cyanea, male: 8, head, frontal view; 9, scapus, frontolateral view.

FIGURES 10 – 14. Chileana maculata, female: 10, habitus, lateral view; 11, head, frontal view; 12, head, frontal view; 13, fore wing; 14, part of scape, pedicel, anellus and F 1 – F 4, ventrolateral view.

FIGURES 15 – 18. 15 – 16, Chileana maculata, female: 15, head and mesosoma, dorsal view; 16, propodeum, dorsal view. 17 – 18, C. maculata, male: 17, head, dorsal view; 18, clypeus, frontal view.

FIGURES 19 – 23. Chileana tricarinata, female: 19, habitus, lateral view; 20, head, frontal view; 21, head, frontal view; 22, fore wing; 23, part of pedicel, anellus and F 1 – F 4, lateral view.

FIGURES 24 – 26. 24 – 25, Chileana tricarinata, female: 24, head and mesosoma, dorsal view; 25, scutellum, propodeum and base of metasoma, dorsal view. 26, Chileana penai, female: habitus, lateral view.

FIGURES 27 – 32. Chileana penai, female: 27, head, frontal view; 28, head, frontal view; 29, clypeus, frontal; 30, scape, pedicel, anellus and F 1 – F 5, frontolateral; 31, head and mesosoma, dorsal view; 32, scutellum, propodeum and base of metasoma, dorsal view.