Boucekinus Janšta & Hanson

Janšta, Petr, Vilímová, Jitka & Hanson, Paul, 2011, Description of a new genus, Boucekinus (Hymenoptera: Chalcidoidea: Torymidae), with two new species and a discussion of its placement, Zootaxa 2762, pp. 49-55 : 50

Boucekinus Janšta & Hanson , gen. nov.

Figs 1−17

Type species. Boucekinus tatianae Janšta & Hanson , by present designation.

Etymology. The genus is named in honour Dr. Zdeněk Bouċek, promoter of modern chalcidology.

Diagnosis. Boucekinus is readily distinguished from other torymid genera based on several characters. The antennae are situated very high on the head and have a long scape; the male funicular segments are inconspicuously pedicellate. The eye is relatively large in lateral view. The occipital carina is closer to the posterior ocelli than to the occipital foramen and nearly reaches the hypostomal carina. The pronotum is nearly as long as broad, without a delimited pronotal collar, the scutellum has coarser sculpture in its posterior half than its anterior half, and the propodeum is nearly half as long as broad, with at most two submedian carinae. The wing venation consists of a very long marginal vein, relatively short postmarginal, and very short stigmal vein (as in Figs 9 , 15 ). At least Gt2– Gt4 of the gaster are deeply emarginate, the entire gaster is flattened laterally, the petiole is transverse but well developed, and the ovipositor is extremely long, longer than the whole body.

In the key of Grissell (1995) Boucekinus goes to couplet 35 (the beginning of the tribe Torymoidini ) but differs from Pseudotorymus Masi by the position of antennae, wing venation, and posteromedial emargination of Gt2–Gt4, and from the other genera of the tribe by having only one distinct anellus.

Description. FEMALE. Length of body without ovipositor 1.9–2.5 mm. Head and mesosoma dark with bluegreen metallic tints. Head and thorax generally smooth with some alutaceous to reticulate areas; pronotum dorsally with some irregular serration.

Head. Slightly broader than high, broader than thorax. Antennae placed very high up on head, above centre of frons, and with scape as long or longer than HTE with more than half length projecting above vertex ( Figs 8 , 14 ). Funicular segments longer than wide or at most with F6 transverse. Claval segments two and three with narrow stripe of micropilosity. Frons and vertex with sparsely scattered thin, short, white, decumbent setae in area between clypeus and toruli, setae above toruli at least twice as long as shorter ones, brown and protruding ( Figs 4, 8 , 14 ). Ventral margin of clypeus slightly protruding. Occipital carina present, with ventrolateral edges nearly touching hypostomal carina, upper part much closer to posterior ocelli than to occipital foramen ( Fig. 10 ).

Mesosoma. Pronotum slightly broader than long, not wider than greatest width of midlobe of mesoscutum. Pronotal collar not delimited by transverse carina. Notauli and axillae well developed, mesoscutum separated from scutellum by alveolate scutoscutellar suture. Propodeum nearly twice as wide as long, shiny, with at most two submedian carinae. Thorax dorsally sparsely covered with long brown setae. Wings hyaline or sometimes slightly infumate, covered with sparse brown setae. Marginal vein 4.7X–8.0X as long as postmarginal vein, postmarginal vein 2.0X–3.5X as long as stigmal vein. Legs slender, femora without any teeth or serration.

Metasoma. About as long as mesosoma or a little longer; in lateral view oval, 1.3X–1.5X as long as high; dorsally nearly as wide as mesosoma. Petiole short, dorsally transverse; Gt2–Gt4, and sometimes Gt1, deeply emarginate posteromedially, entire gaster laterally flattened. Hypopygium reaching at least 0.7X length of gaster. Ovipositor at least 2.6X as long as gaster.

MALE. Known only from B. tatianae . Similar to female except as follows: funicular segments inconspicuously pedicellate, flagellar segments more transverse, eye 1.5X as high as long. Legs with femora stouter. Tergites of gaster without emargination on posterior margin.

Figures

FIGURES 1 – 3. Habitus in lateral view. 1, Boucekinus masneri, female; 2, Boucekinus tatianae, female; 3, B. tatianae, male.

FIGURES 4 – 9. Boucekinus masneri, female. 4, antenna, lateral view; 5, clypeus, frontal view; 6, head and mesosoma, dorsal view; 7, habitus, dorsal view; 8, head and antennae, lateral view; 9, forewing, dorsal view.

FIGURES 10 – 17. Boucekinus tatianae. 10, Ψ antenna, lateral view; 11, Ψ head, frontal view; 12, Ψ head and mesosoma, dorsal view; 13, Ψ mesosoma, dorsal view; 14, Ψ head, antenna and part of mesosoma, lateral view; 15, Ψ forewing, dorsal view; 16, ♂ antennae, lateral view; 17, ♂ antenna and head, lateral view.