Kavayva davidsmithi Zhang & Gates, 2021

Zhang, Y. Miles, Gates, Michael W., Silvestre, Rogerio & Scarpa, Manuela, 2021, Description of Kavayva, gen. nov., (Chalcidoidea, Eurytomidae) and two new species associated with Guarea (Meliaceae), and a review of New World eurytomids associated with seeds, Journal of Hymenoptera Research 86, pp. 101-121 : 101

Kavayva davidsmithi Zhang & Gates sp. nov.

Figs 1 , 22-23 , 24-25 , 26-27

Material examined.

Holotype Peru • [1F]; Manu National Park, Madre de Dios, Estación Biológica Villa Carmen; Trail 0; 14 Dec. 2013; 12°53'41"S, 71°24'13"W; 650 m a.s.l.; A. L. Norrbom leg.; ex. seed in fruit of Guarea guidonia ; 13-PE-46; MUSM . Paratypes Peru • [1F, 1M]; same information as holotype; USNMENT01788076, 077 .

Diagnosis.

Kavayva davidsmithi can be distinguished from K. bodoquenensis by the light infumation of the forewing and the absence of a secondary wing band on the basal setal line, extensive black bands across mesosoma in dorsal view, and the presence of ventral plaque on both sexes.

Description.

Holotype female. 10.1 mm in length.

Color. Yellow except antennomeres, supraclypeal area light brown, tip of mandible, vertex, anterior half of occiput, malar sulcus, anterior half of dorsal and lateral pronotum, anterior half of midlobe of mesoscutum, lateral lobes of mesoscutum along the notauli, axillula, mediodorsal line on scutellum, ventral prepectus black, clypeus, wing vein, forewing below submarginal and marginal vein, femur, tibia amber and -eyes pinkish red (Fig. 22 ).

Head. Quadrate with rounded corners, 1.2 × as wide as high in frontal view, 2.4 × as wide as long in dorsal view, areolate-rugose with setae (Fig. 25 ). Lower face weakly strigose, clypeus bilobed, mandible tridentate, supraclypeal area slightly concave and extending to the toruli. Malar sulcus present, incomplete, reaching about ⅔ of malar space. Malar space glabrous, smooth. Genal carina present. Toruli positioned above the lower ocular line about 1/3 of the eye length, diameter of torulus 3.3 × that of the intertorular space. Scrobal depression deeply excavated. Vertex areolate, anterior ocellus above scrobal depression, ratios of POL:OOL:LOL equal to 3:4:1. Ventral plaque on scape forming a projection on the inner face below the attachment point to the pedicle. Ratio of scape (minus radicle):pedicel:anellus:F1:F2:F3:F4:F5:F6:club as 10:2.7:1:5.7:6.3:6.3:5.7:5:4.7:6.7, pedicel chalice-shaped, funicular segments with multiple irregular rows of longitudinal sensilla whorls of setae, much shorter than its bearing segment, clava 2-segmented (Fig. 25 ). Postgenal lamina present.

Wing. Forewing infumated half way down the wing below the submarginal and marginal vein, not exceeding stigmal vein. Ratio of marginal vein:postmarginal vein:stigmal vein as 2.3:1.2:1 (Fig. 27 ).

Mesosoma. Mesosoma umbilicate, 1.7 × as long as broad. Notauli complete, shallow (Fig. 26 ). Anterior pronotal carina interrupted. Femoral depression of mesopleuron weakly striate, mesepimeron smooth and shiny ventrally, bulging laterally (Fig. 22 ). Dorsellum carinae diverging. Propodeum in lateral view forming a 90° angle with mesosoma, broadly delimited by carinae forming a hexagon with raised lateral corners. Median furrow of propodeum concave and smooth, bordered laterally by irregular setose cells. All femora with distal lamella.

Metasoma. Metasoma medially compressed, smooth, Gt6-syntergum setose. Gaster S-shaped in lateral view, ovipositor angled at about 30° dorsad to horizontal axis (Fig. 22 ). Gt4 emarginate posteriorly in dorsal view.

Male. 9.4 mm. Scrobal depression black, otherwise color and sculpture as described for female (Fig. 23 ). Antennomeres with multiple rows of erect setae and about 1.4 × as long as width of segment (Fig. 26 ). Gastral petiole length in dorsal view about 2.8 × as long as its greatest width, 1.7 × as long as the length to metacoxa, smooth (Fig. 23 ).

Variation.

The coloration on the vertex and occiput can be confluent or disconnected.

Biology.

Associated with seeds of Guarea guidonia ( Meliaceae ).

Distribution.

Manu National Park, Peru.

Etymology.

Patronym honoring David Smith for his decades of devotion to Hymenoptera and improvement of the Smithsonian’s National Insect Collection.

Figures

Figure 1. Illustration of Kavayva davidsmithi with its host plant, Guarea guidonia (Meliaceae). The upper right shows the emergence holes from the fruit. Illustrated by Taina Litwak.

Figure 22 - 23. Kavayva davidsmithi lateral habitus 22 female 23 male. Photos by Cecilia Escobar.

Figure 24 - 25. Kavayva davidsmithi 24 male dorsal habitus 25 frontal view of head. Photos by Cecilia Escobar.

Figure 26 - 27. Kavayva davidsmithi 26 male head and antennae 27 female forewing. Photos by Cecilia Escobar.