Gonatopus somerseti ( Olmi, 1984 )

Olmi, Massimo, Copeland, Robert S. & Noort, Simon Van, 2019, Dryinidae of the Afrotropical region (Hymenoptera, Chrysidoidea), Zootaxa 4630 (1), pp. 1-619 : 544

117. Gonatopus somerseti ( Olmi, 1984)

( Figs 238A, B , 240C )

Apterodryinus somerseti Olmi 1984: 1345 .

Gonatopus somerseti (Olmi) : Olmi 1998d: 179; 2006: 47; Olmi et al. 2015: 365.

Description. ♀. Apterous; body length 3.4–4.4 mm. Head brown, except anterior region of frons, clypeus and man- dible yellow; antenna testaceous (in specimen from South Africa, 34°15’S 18°21.5’E, antennomere 10 darkened); pronotum with collar black and disc brown-reddish or testaceous-reddish; mesoscutum yellow, except anterior margin black; rest of mesosoma black; metasoma brown-black; legs testaceous, except part of coxae and part of clubs of femora brown. Antenna clavate; antennomeres in following proportions: 9:6.5:19:15:12:10:7.5:7:6:9. Head excavated, shiny, unsculptured, except occiput and anterior region of frons granulate; temple distinct; frontal line incomplete, not present in anterior third of frons; occipital carina absent; POL = 1; OL = 2; OOL = 8. Palpal formula 6/3. Pronotum dull, slightly granulate, crossed by strong transverse impression. Mesoscutum dull, granulate, with two pointed apophyses laterally. In specimen from Kenya, Kora, mesoscutum without lateral pointed apophyses. Metanotum transversely striate, about coplanar to mesoscutellum ( Fig. 240C ). Metapectal-propodeal disc shiny, slightly alutaceous; propodeal declivity transversely striate. Mesopleuron and metapleuron granulate or transversely striate. Meso-metapleural suture obsolete. Protarsomere 1 approximately as long as 4. Enlarged claw ( Figs 238A, B ) with one large subdistal tooth and one row of 8–10 lamellae + 1 seta. Protarsomere 5 ( Fig. 238A ) with two rows of 3–4 (proximal) + 14–16 lamellae; apex with approximately 14–18 lamellae. Tibial spurs 1/0/1.

♂. Unknown.

Material examined. Type: ♀ holotype: SOUTH AFRICA: Eastern Cape, Somerset East , 25–30.XI.1930, R.E. Turner leg. ( NHMUK) . Other material: KENYA: North Eastern Prov., Kora , 1.I.1984, C. West leg. , 1♀ ( AMNH). SOUTH AFRICA: Western Cape, Cape Peninsula National Park , 34°15’S 18°21.5’E, 100 m, 14–31.XII.1999, fynbos, FIT, S. & J. Peck leg. , 99–141, 1♀ ( CNC); Western Cape, Gamkaberg Nature Reserve , 33°44.090’S 21°55.654’E, 997 m, 4.X.2010 – 25.I.2011, MT, Rooiberg Sandstone Fynbos, S. van Noort leg. , GB09-FYN2-M53, 1♀ ( SAMC) .

Hosts. Unknown.

Distribution. Kenya, South Africa.

Remarks. Gonatopus somerseti was previously attributed to group 4 (former genus Apterodryinus ) because the large subapical tooth and the lamellae of the enlarged claw were considered reliable characters for placing species in that group. However, the absence of antennal ADOs and the large distance between the subapical tooth and the apex of the enlarged claw, are convincing evidence that this species belongs in group 7.

Figures

FIGURE 238. Chelae of Gonatopus species.A: G. somerseti (Olmi), holotype. B: G. somerseti (Olmi), enlarged claw of ♀ from South Africa, 33°44.090’S 21°55.651’E. C: G. tananarivei Olmi, holotype. D: G. taylori Olmi, holotype. E: G. transvaalensis Olmi, holotype. Scale bar: A: 0.10 mm; B: 0.06 mm; C: 0.11 mm; D, E: 0.09 mm.

FIGURE 240. A–K: Gonatopus species. A: G. sensitivus Olmi, ♀ holotype: mesoscutum + mesoscutellum + part of metapec- tal-propodeal disc in dorsal view. B: G. shoanus Ponomarenko & Olmi, ♀ holotype: mesosoma in lateral view. C: G. somerseti (Olmi): mesosoma in lateral view of ♀ from South Africa, 34°15’S 18°21.5’E. D, E: G. tananarivei Olmi, ♀ holotype: meso- scutum + mesoscutellum + metapectal-propodeal disc + propodeal declivity in dorsal (D) and lateral (E) view. F: G. taylori Olmi, ♀ paratype: mesoscutum + mesoscutellum + metapectal-propodeal disc + propodeal declivity in dorsal view. G, H: G. trochantericus (Benoit), ♀ from Madagascar, 19°7.56’S 44°48.53’E: mesoscutum + mesoscutellum + metapectal-propodeal disc + propodeal declivity in dorsal view (G); mesosoma in lateral view (H). I, J: G. upembanus Olmi: mesoscutum + mesoscu- tellum + metapectal-propodeal disc + propodeal declivity of ♀ holotype in dorsal view (I); mesosoma in lateral view of ♀ from Kenya, 00°38.1’S 37°40.4’E (J). K: G. trochantericus (Benoit): chela of holotype. Scale bar: A: 0.74 mm; B: 0.72 mm; C: 1.28 mm; D, E, G: 0.77 mm; F: 0.93 mm; H: 1.14 mm; I: 1.08 mm; J: 1.70 mm; K: 0.09 mm.