Thaumatodryinus priscus (Olmi, 1998) Martins & Melo, 2020

Martins, Andre L. & Melo, Gabriel A. R., 2020, Revision of the fossil species of Thaumatodryinus Perkins from Dominican amber, with a new combination and description of a new species (Hymenoptera, Dryinidae), Journal of Hymenoptera Research 79, pp. 77-88 : 77

† Thaumatodryinus priscus (Olmi, 1998) comb. nov.

Figure 3

Dryinus priscus Olmi, 1998: 77. Female holotype. Dominican Republic: amber from unknown mine, probably El Valle mine (AMNH, examined).

Extended diagnosis.

Female holotype, 4.0 mm (see fig. 55 in Olmi 1998). Thaumatodryinus priscus is easily recognized by the body testaceous, except by the dark petiole and mesoscutellum apparently black or brown. Antenna with dense and short setae and rhinaria present in flagellomeres 3-8. Head slightly convex, apparently granulated; eye somewhat bulging; frontal line absent; mid portion of clypeus with anterior margin convex. Pronotum granulated; mesoscutum granulated, notauli incomplete, reaching approximately 0.7 of mesoscutum length; mesoscutellum shorter than mesoscutum, with Integumental sculpture not clearly evident; anterior margin of mesoscutellum with broad, shallow groove; metanotum shorter than mesoscutellum, with indistinct Integumental sculpture ; propodeum reticulate rugose and distinctly long, about as long as high in lateral view. Ocellar ratio: POL= 5; OL= 2.5; OOL= 10; OPL= 2; TL= 3. Antennomeres in following proportions: 9:5:20:19:23:27:20:15:10:12. Eye elongated, about 1.4 × longer than wide; maximum head width about 1.7 × distance between inner margins of tegulae; pronotum shorter than head (15:26); mesoscutum as long as pronotum (16:15). Fore wing with one dark transverse band and vein 2r-rs shorter than 3Rs&4Rs (11:21). Fore leg segments in following proportions: 19 (coxa): 20 (trochanter): 45 (femur): 30 (tibia): 11 (1th tarsomere): 4 (2nd tarsomere): 6 (3th tarsomere): 21 (4th tarsomere): 31 (5th tarsomere); 5th tarsomere slightly longer than enlarged claw (31:27) and with two rows of numerous lamellae (exact number hard to observe); enlarged claw apparently with one subapical tooth and with one row of numerous lamellae (exact number hard to observe). Propodeum distinctly long, about as long as high in lateral view, dorsal surface as long as posterior surface.

Remarks.

This species was originally described in the genus Dryinus by Olmi (1998) and redescribed as such by Olmi and Virla (2014), but this taxon belongs in Thaumatodryinus since it exhibits all the diagnostic features of the genus, including the characteristic long setae on flagellomeres (see Fig. 3 ). Furthemore, we have noticed that the specimen illustrated by Olmi and Virla (2014: 254) representing Dryinus priscus Olmi does not correspond to the holotype. The inclusion shown in their Plate 100 corresponds to a species of Harpactosphecion Haupt, which can be easily recognized by the long and distinctly curved, fore trochanter, and the thin flagella.

Examined material.

Female holotype, in amber from Dominican Republic: amber from an unknown mine (probably El Valle mine) DR-14-341 (AMNH) .

Figures

Figure 3. † Thaumatodryinus priscus (Olmi, 1998), female holotype. A habitus, lateral view B habitus, ventral view C head and mesosoma, lateral view D head and mesosoma, dorsal view E head and mesosoma, ventral view F apical portion of fore leg, with details of the chela. Scales: 1 mm (A), 1 mm (B), 0.5 mm (C), 0.5 mm (D-F).