Lubomirus, Chemyreva & Perkovsky & Vasilenko, 2024

Chemyreva, Vasilisa G., Perkovsky, Evgeny E. & Vasilenko, Dmitry V., 2024, First record of the parasitoid family Ismaridae (Hymenoptera, Diaprioidea) from Eocene Baltic and Rovno ambers with the description of a new genus and two new species, Zootaxa 5418 (4), pp. 328-338 : 329-330

Genus Lubomirus gen. nov.

Type species: Lubomirus victori sp. nov. Baltic amber, late Eocene, Priabonian.

Comparative diagnosis. Small wasps (about 1.1–1.3 mm). Antennae with small anellus between A2 and A3 (antennae without anellus in Ismarus ). Clypeus weekly transverse, less than twice as wide as high (more than 3 times as wide as high in Ismarus ) ( Fig. 1 ). Tentorial pits very small (usually large and distinct in Ismarus ) ( Fig. 1 ; Fig. 5C blue arrow). Notauli complete (not developed in Ismarus ). Mesopleural pit absent (present in Ismarus ). At least anterior claws of females with a row of strong setae ventrally ( Figs 3C , 5A , red arrows) (female claws simple in Ismarus ). Fore tibia with one regular spur only ( Fig. 5A , green arrow) (fore tibia with one regular spur and one false spur in Ismarus ). Base of T2 with very short, flat sculptured area directly next to petiole ( Fig. 4D ); if gaster elevated, this area completely hidden under petiole (base of T2 with elongate large furrows in Ismarus ; if gaster elevated, this sculpture never completely hidden under petiole in Ismarus ). Radial and postmarginal veins visible as traces, not tubular (radial and postmarginal veins usually tubular, very rarely nebulous or absent in Ismarus ).

Etymology. The new genus is named in honor of Dr. Lubomir Masner, a brilliant entomologist and expert on Diaprioidea , Proctotrupoidea , and Platygastroidea.

Figures

FIGURE 1. Ismaridae, faces.A—Ismarus apicalis Kolyada, B—I. halidayi Förster, C—Lubomirus masneri sp. nov. Scale bar: A, B—0.2 mm; C—0.1 mm.

FIGURE 3. Lubomirus masneri, holotype, female. A—whole insect, ventro-lateral view; B—body, ventro-lateral view; C— fore tarsus; D—hind legs. Scale bar (mm): A—0.5; B—0.2; C, D—0.1.

FIGURE 4. Lubomirus victori, holotype, female.A—whole insect in lateral view; B, E—body, lateral views; C—fore wing and metasoma, dorsal view; D—body, dorsal view. Scale bar: A—0.5 mm; B–E—0.3 mm.

FIGURE 5. Lubomirus victori, holotype, female. A—fore tarsus, B—fore wing; C—face; D—body, ventral view. Vein name: m—marginal, pm—postmarginal, ps—poststigmal, r—radial, s—stigmal. Scale bar 0.3 mm.