Kavayva Zhang, Silvestre, & Gates, 2021

Kavayva Zhang, Silvestre, & Gates gen. nov.

Figs 1 View Figure 1 , 7-8 View Figure 7–8 , 9-13 View Figure 9–13 , 14-18 View Figure 14–18 , 19-21 View Figure 19–21 , 22-23 View Figure 22–23 , 24-25 View Figure 24–25 , 26-27 View Figure 26–27

Type species.

Kavayva bodoquenensis Zhang, Silvestre, Gates.

Diagnosis.

Kavayva can be distinguished from other eurytomid genera by the following combination of characters - presence of ventral plaque of scape form a projection on the inner face below the attachment to pedicel in males ( Kavayva bodoquenensis , Fig. 13 View Figure 9–13 ) or both sexes ( Kavayva davidsmithi , Fig. 26 View Figure 26–27 ), F1 of antenna cylindrical and not constricted (Fig. 12 View Figure 9–13 ), presence of deep black line along the malar sulcus (Fig. 25 View Figure 24–25 ), middle of propodeum completely glabrous and smooth (Fig. 15 View Figure 14–18 ), and associated with seeds of Guarea ( Meliaceae ).

Description.

Female body length 6.5-10 mm, male 6.5-9.4 mm.

Color. Mostly yellow, black along malar sulcus, with brown infuscation or black bands on the dorsal mesosoma.

Head. Quadrate with rounded corners, 2.4-2.5 × as wide as long in dorsal view (Figs 9 View Figure 9–13 , 25 View Figure 24–25 ), areolate-rugose with setae. Lower face weakly strigose, clypeus bilobed, mandible tridentate, supraclypeal area smooth, slightly concave, extending to the toruli (Figs 9 View Figure 9–13 , 25 View Figure 24–25 ). Malar sulcus present, incomplete, reaching about ⅔ of malar space. Malar space glabrous, smooth. Genal carina present. Toruli positioned parallel to the lower ocular line, diameter of torulus 3.3 × that of the intertorular space. Intertorular space without projection between antennae (Fig. 9 View Figure 9–13 ). Scrobal depression deeply excavated, converging ventrally in frontal view. Vertex areolate to umbilicate, anterior ocellus above scrobal depression. Scape with or without ventral plaque (females of Kavayva bodoquenensis ). Antenna pedicel chalice-shaped, six funicular segments cylindrical with multiple irregular rows of longitudinal sensilla and whorls of setae, much shorter than its bearing segment, clava 2-segmented. Occiput concave, postgenal groove diverging, postgenal lamina present, subforaminal bridge ornamentation faint and inconspicuous (Fig. 10 View Figure 9–13 ).

Wing. Forewing slightly infumated below marginal and stigmal vein, or forming a narrow band that curves slightly proximally and extending half way down the wing (Figs 7 View Figure 7–8 , 27 View Figure 26–27 ). Costal cell, basal cell, and speculum (except for anterior edge) setose.

Mesosoma. Mesosoma umbilicate, 1.2-1.7 × as long as broad. Notauli complete, shallow. Anterior pronotal carina widely interrupted. Femoral depression of mesopleuron weakly striate, mespeimeron smooth and shiny ventrally, bulging laterally (Fig. 14 View Figure 14–18 ). Dorsellum carinae diverging. Propodeum in lateral view forming a 90° angle with mesosoma, broadly delimited by carinae forming a hexagon with raised lateral corners (Fig. 15 View Figure 14–18 ). Median furrow of propodeum concave and smooth, bordered laterally by irregular setose cells. Forecoxa without oblique groove (Fig. 16 View Figure 14–18 ). All femora with distal lamella, forecoxa without oblique groove. Metacoxa bare laterally, metatibia densely setose.

Metasoma. Metasoma medially compressed, smooth, Gt4-Gt6 glabrous or setose. Petiole very short and not visible while specimen is intact (Figs 7 View Figure 7–8 , 22 View Figure 22–23 ). Gaster S-shaped in lateral view, ovipositor angled at about 30° dorsad of horizontal axis. Gt4 may be emarginate posteriorly in dorsal view.

Male. Color and sculpture as described similar to females. Ventral plaque on scape forming a projection on the inner face below the attachment point to pedicel (Figs 12 View Figure 9–13 , 13 View Figure 9–13 ). Antennomeres with multiple rows of erect setae. Toruli positioned above the lower ocular line. Marginal vein swollen (Figs 8 View Figure 7–8 , 23 View Figure 22–23 ). Gastral petiole striate dorsally, 1.5-1.7 × as long as the length of metacoxa, smooth laterally.

Etymology.

In the Guarani Native American language “Kavayva” means: "wasp of the fruit that gives seeds".