Dryinus georgianus, Speranza, Stefano, Olmi, Massimo, Guglielmino, Adalgisa & Contarini, Mario, 2019

Speranza, Stefano, Olmi, Massimo, Guglielmino, Adalgisa & Contarini, Mario, 2019, A new species of the genus Dryinus Latreille (Hymenoptera, Dryinidae) from the USA, ZooKeys 871, pp. 41-47 : 43-45

Dryinus georgianus sp. nov. Figs 1 , 2

Diagnosis.

Female with body predominantly ferruginous, frontal line complete; OL shorter than POL; OL as long as TL; posterior ocelli not touching occipital carina; head and pronotum granulate; notauli complete; mesoscutum granulate and partly reticulate rugose, enlarged claw spatulate and with one tooth on lateral margin; Protarsomere 5 with approximately 35 lamellae.

Description.

Female ( Fig. 1 A–C ). Fully winged. Length 4.0 mm. Head and antenna ferruginous. Mesosoma ferruginous, except two lateral brown spots on pronotum. Anterior third and lateral regions of mesoscutum darkened. Part of lateral regions of metapectal-propodeal complex and propodeal declivity darkened. Petiole black. Metasoma brown, except first segment almost totally testaceous. Legs ferruginous. Antenna clavate. Antennomeres in following proportions: 9:4:18:9:7:7:6:6:5:8. ADOs present in antennomeres 5-10. Head ( Fig. 1C ) swollen, dull, granulate, except some irregular longitudinal keels on face. Frontal line complete. Occipital carina complete. Temple distinct. POL = 4; OL = 2; OOL = 7; OPL = 1; TL = 2. Greatest breadth of posterior ocelli about as long as OL. Pronotum dull, granulate, crossed by two transverse impressions, anterior one weak and posterior one strong. Disc of pronotum humped. Posterior collar of pronotum short, reticulate rugose. Pronotal tubercle not reaching tegula. Mesoscutum ( Fig. 1A ) dull, granulate, reticulate rugose on lateral regions and near posterior margin. Notauli complete, posteriorly separated, hardly visible near posterior margin of mesoscutum. Minimum distance between notauli about as long as POL. Mesoscutellum and metanotum dull, granulate. Metapectal-propodeal complex reticulate rugose, without longitudinal keels on propodeal declivity. Forewing ( Fig. 1A, B ) with three dark transverse bands. Distal part of 2r-rs&Rs vein much longer than proximal part (11:6). Protarsomere 3 produced into hook. Protarsomeres in following proportions: 17:2:3:11:17. Enlarged claw spatulate ( Fig. 2 ), with one strong subapical tooth and one row of 11 lamellae. Protarsomere 5 ( Fig. 2 ) with two rows of approximately 35 lamellae extending continuously to distal apex. Tibial spurs 1/1/2.

Male.

Unknown.

Material examined.

Holotype: female, USA: Georgia, McIntosh Co., Sapelo Island, 19. IX– 19.XI.1987, FIT, shrub sand dunes, BRC Hym. Team (RAM).

Hosts.

Unknown.

Etymology.

The species is named georgianus, based on the collecting locality.

Figures

Figure 1. Dryinus georgianus sp. nov., female holotype: habitus in dorsal (A) and lateral (B) view; head in dorsal view (C). Scale bars: 1.28 mm (A, B); 0.46 mm (C).

Figure 2. Dryinus georgianus sp. nov., female holotype: chela. Scale bar: 0.13 mm.