Gonatopus acuminatus ( Olmi, 1984 )

Olmi, Massimo, Copeland, Robert S. & Noort, Simon Van, 2019, Dryinidae of the Afrotropical region (Hymenoptera, Chrysidoidea), Zootaxa 4630 (1), pp. 1-619 : 440-443

21. Gonatopus acuminatus ( Olmi, 1984)

( Figs 177C , 178A , 179A , 180A )

Agonatopoides acuminatus Olmi 1984: 1324 .

Gonatopus acuminatus (Olmi) : Guglielmino & Olmi 2014a: 38; Olmi et al. 2015: 364. Description. ♀ ( Figs 177C , 178A ). Apterous; body length 3.1–3.7 mm. Holotype with head brown-reddish, except mandible, clypeus and anterior region of frons yellow; antenna yellow, except antennomeres 8–10 brown; mesosoma brown-reddish, except distal extremity of propodeal declivity yellow; petiole black; metasoma brown-reddish; legs brown-reddish, except tarsi yellow. Specimen from Kenya, 04°23.456’S 39°41.687’E, completely testaceous, except vertex of head darkened, metasoma partly brown and club of profemur darkened. Specimen from South Africa, 33°34.092’S 18°47.680’E, with head brown, except mandible testaceous; antenna, mesosoma and metasoma brown; legs mostly brown. Antenna clavate; antennomeres in following proportions: 8:6:20:11:9:7.5:5.5:6:5:9. Head excavated, dull, granulate; POL = 1; OL = 2; OOL = 9. Palpal formula 5/3. Pronotum shiny, with short irregular keels, crossed by strong transverse impression. Mesoscutum sculptured by longitudinal keels. Mesoscutellum shiny and smooth. Metanotum little excavated behind mesoscutellum ( Fig. 180A ), with sides protruding; lateral protrusions pointed. Metapectal-propodeal disc shiny, as sculptured as pronotum with strong median longitudinal furrow; propodeal declivity transversely striate. Holotype with mesopleuron and metapleuron not transversely striate; in specimen from Kenya, 04°23.456’S 39°41.687’E, mesopleuron and metapleuron transversely striate. Mesometapleural suture distinct and complete. Protarsomeres in following proportions: 9:2:4:10:16. Enlarged claw ( Fig. 179A ) with one large subdistal tooth and one row of five-seven lamellae. Protarsomere 5 ( Fig. 179A ) with two rows of approximately 10–17 lamellae; apex with approximately 16–20 lamellae. In specimens from Kenya, 04°23.456’S 39°41.687’E and 1.2233°S 36.8967°E, protarsomere 5 with medial lamellae situated in distal half of protarsomere (two rows of 2+7 lamellae in specimen from Kenya, 1.2233°S 36.8967°E). Tibial spurs 1/0/1.

♂. Unknown.

Material examined. Type: ♀ holotype: DEMOCRATIC REPUBLIC OF THE CONGO: Haut-Lomami, Up- emba National Park, Lusinga , right tributary of Kenia (right tributary of Lufwa ), 1585 m, 19.XII.1947, G.F. de Witte Mission ( MRAC) . Other material: KENYA: Coast Prov., Shimba Hills National Park, 04°23.456’S 39°41.687’E, 389 m, MT, just inside Longomwagandi Forest , 19.XI–3.XII.2008, R. Copeland leg. , 1♀ ( NMK); Nairobi Prov., ICIPE Campus, Kasarani , 1.2233°S 36.8967°E, 1600 m, 25.II–6.III.2014, MT, along stream, meadow in degraded shrub-/grassland, R. Copeland leg. , 1♀ ( MOLC). SOUTH AFRICA: Western Cape, Fynbos Estate, Dragonridge , 33°34.092’S 18°47.680’E, 635 m, 28.IX–28.XII.2010, YPT, Boland Granite Fynbos, S. van Noort leg., DRA09- FYN1-Y10 , 1♀ ( SAMC) .

Hosts. Unknown.

Distribution. Democratic Republic of the Congo, Kenya, South Africa.

Figures

FIGURE 177. Habitus of Gonatopus species.A, B: G. polli (Benoit), ♀ from Yemen, Sana’a, in dorsal (A) and lateral (B) view. C: G. acuminatus (Olmi), ♀ holotype in lateral view. Scale bar: A: 1.94 mm; B: 1.76 mm; C: 1.67 mm.

FIGURE 178. Habitus of Gonatopus species: group 3. A: G. acuminatus (Olmi), ♀ holotype in dorsal view. B, C: G. mixtus Olmi, ♀ holotype in dorsal (B) and lateral (C) view. Scale bar: A: 2.31 mm.

FIGURE 179. Chelae of Gonatopus species holotypes. A: G. acuminatus (Olmi). B: G. cafer (Olmi). C: G. ceres (Olmi). D: G. fuscus (Olmi). Scale bar: A: 0.07 mm; B, C: 0.09 mm; D: 0.08 mm.

FIGURE 180. Gonatopus: group 3. A: G. acuminatus (Olmi), mesosoma of ♀ holotype in lateral view. B: G. ceres (Olmi), ♀ from Namibia, Kuiseb River: mesoscutum + mesoscutellum + metapectal-propodeal disc + propodeal declivity in dorsal view. C, D, I: G. fuscus (Olmi), ♀ holotype: head in frontal view (C); mesosoma in lateral view (D); habitus in dorsal view (I). E, F: G. hantamensis Olmi, Copeland & van Noort sp. nov., ♀ holotype: mesoscutum + mesoscutellum + metapectal-propodeal disc + propodeal declivity in dorsal view (E); mesosoma in lateral view (F). G: G. madecassus Olmi, ♀ holotype: mesoscutum + mesoscutellum + metapectal-propodeal disc + propodeal declivity in dorsal view. H: G. nicator Olmi, ♀ holotype: mesosoma in lateral view. Scale bar: A: 1.18 mm; B: 0.85 mm; C: 0.29 mm; D, F: 1.23 mm; E: 0.82 mm; G: 1.24 mm; H: 1.46 mm; I: 1.13 mm.