Dryinus afer ( Olmi, 1975 )

Olmi, Massimo, Copeland, Robert S. & Noort, Simon Van, 2019, Dryinidae of the Afrotropical region (Hymenoptera, Chrysidoidea), Zootaxa 4630 (1), pp. 1-619 : 306-308

1. Dryinus afer ( Olmi, 1975)

( Figs 118B, C , 119 B–E, 120 A, B)

Paradryinus afer Olmi 1975: 221 ; Prinsloo 1983: 10.

Undetermined dryinid wasp: Prinsloo 1979: 27.

Dryinus afer (Olmi) : Olmi 1984: 787; Guglielmino & Olmi 1997: 222; Guglielmino et al. 2013: 37; Guglielmino & Olmi 2014b: 265.

Description. ♀ ( Figs 118B, C ). Fully winged; body length 5.0– 6.4 mm. Head black, except mandible, clypeus and anterior region of frons (more along orbits) testaceous; antenna brown, except scape and pedicel yellow; mesosoma black, except lateral regions of pronotum and posterior collar of pronotum reddish; metasoma brown; legs brown, except trocanters and part of procoxa yellow. In specimen from Democratic Republic of the Congo, 04°15’S 17°10’E, head brown, except mandible, clypeus and anterior region of frons testaceous-brown; antenna testaceous; mesosoma brown, except lateral regions of pronotum and epicnemium brown-testaceous; metasoma brown; legs brown-testaceous. Head ( Fig. 119B ) dull, granulate; occipital carina complete; lateral ocelli situated in front of virtual straight line joining posterior edges of eyes. Pronotum ( Fig. 119C ) dull, granulate, with numerous longitudinal keels on lateral regions and on posterior transverse furrow; pronotum crossed by slight anterior transverse impression and strong posterior transverse furrow (in specimen from Democratic Republic of the Congo, 04°15’S 17°10’E, anterior transverse impression deeper than in type specimens); posterior collar long, about as long as distance from tegula to pronotal tubercle; pronotal tubercle not reaching tegula. Mesoscutum dull, granulate, with numerous short longitudinal keels on posterior third. Notauli hardly visible, reduced to tracks, incomplete, reaching about 0.5 × length of mesoscutum. Mesoscutellum and metanotum dull, granulate and reticulate rugose. Metapectal-propodeal disc reticulate rugose; propodeal declivity reticulate rugose, without longitudinal keels. Forewing with two brown transverse bands; distal part of 2r-rs&Rs vein rectilinear, much longer than proximal part (18:8). Protarsomere 1 about as long as 4. Enlarged claw ( Fig. 119E ) with one large subdistal tooth and one row of 14 lamellae. Protarsomere 5 ( Fig. 119E ) with two rows of about 38 lamellae; apex with approximately 13 lamellae. Tibial spurs 1/1/2.

♂ ( Figs 120A, B ). Fully winged; body length 2.7–3.1 mm. Head black, except mandible yellow; antenna yel-low-brown; mesosoma black; metasoma brown; legs brown, except tarsi and pro- and mesotibia testaceous. Head dull, completely reticulate rugose; frons flat in front of anterior ocellus and humped between antennal toruli; oc- cipital carina incomplete; POL = 6; OL = 3; OOL = 4; OPL = 1; temple absent. Mesoscutum dull, reticulate rugose, setose. Notauli hardly visible, incomplete, reaching approximately 0.5 × length of mesoscutum. Mesoscutellum and metanotum dull, granulate and punctate. Metapectal-propodeal disc and propodeal declivity reticulate rugose. Forewing hyaline, without dark transverse bands; distal part of 2r-rs&Rs vein much longer than proximal part; 2R1 cell closed. Genitalia in Fig. 119D . Tibial spurs 1/1/2.

Material examined. Types: ♀ holotype: SÃO TOMÉ AND PRINCIPE: São Tomé Island, Canavial, Derron leg. (AMNH). Paratypes: same locality label as holotype, 3♂♂ (AMNH). Other material: DEMOCRATIC RE- PUBLIC OF THE CONGO: Haut-Uele, Wamba Territory, Kikongo Mission, 04°15’S 17°10’E, 2.IV.2006, MT, forest edge, S.L. Heydon & S.E. Stevenson leg., 1♀ (DEUCD).

Hosts. Ricaniidae (Guglielmino et al. 2013): in São Tomé Island: Ricania insularis Lallemand.

Natural enemies. In São Tomé Island this species may be parasitized by Helegonatopus saotomensis Prinsloo 1979 (Hymenoptera, Encyrtidae) (Prinsloo 1979).

Distribution. Democratic Republic of the Congo, São Tomé and Principe.

Figures

FIGURE 118. Habitus of Dryinus species. A: ♂ in lateral view. B, C: D. afer (Olmi), ♀ holotype in dorsal (B) and lateral (C) view. Scale bar: A: 1.60 mm; B: 3.56 mm; C: 2.83 mm.

FIGURE 119. A: chela of Dryinus sp. group 4. B–E: Dryinus afer (Olmi): head in dorsal view (B), prothorax in lateral view (C), chela (E) of ♀ holotype; genitalia (D) of ♂ allotype. Scale bar:A: 0.11 mm; B: 0.24 mm; C: 0.49 mm; D: 0.08 mm; E: 0.16 mm.

FIGURE 120. A, B: Dryinus afer (Olmi), ♂ allotype in dorsal (A) and lateral (B) view. C, D: Dryinus basilewskyi Benoit, ♀ from Central African Republic, 3°02.01’N 16°24.57’E, in dorsal (C) and lateral (D) view. Scale bar: A: 2.15 mm; B: 1.46 mm.