Gonatopus koebergensis Olmi, Copeland & van Noort, 2019

Olmi, Massimo, Copeland, Robert S. & Noort, Simon Van, 2019, Dryinidae of the Afrotropical region (Hymenoptera, Chrysidoidea), Zootaxa 4630 (1), pp. 1-619 : 510-511

87. Gonatopus koebergensis Olmi, Copeland & van Noort , sp. nov.

( Figs 218 , 220D , 222D )

Diagnosis. Apterous ♀ of Gonatopus with palpal formula 4/2; pronotum crossed by strong transverse furrow; head deeply excavated; temple without sharp carina; mesoscutum very long, approximately 3.0 × as long as broad; mesometapleural suture distinct and complete; protarsomere 1 slightly shorter than 4; enlarged claw ( Fig. 222D ) with one small subapical tooth and one row of peg-like setae. ♂ with palpal formula 6/3; region of head between lateral ocelli and eyes with ovoidal area anteriorly delimited by strong and high carina; antennomere 3 less than 3 × as long as broad; notauli complete; dorsal process of paramere large and with apex broadened ( Fig. 220D ).

Description. ♀ ( Fig. 218 ). Apterous; body length 4.1 mm. Head black, except mandible testaceous; antenna black, except ventral side of antennomere 1 whitish; mesosoma and metasoma black; legs brown. Antenna clavate, without ADOs; antennomeres in following proportions: 10:6:15:11:8:7:6:6:5:7. Head deeply excavated, with frons shiny, unsculptured; temple prominent, without sharp carina, finely punctate, unsculptured among punctures; frontal line complete; occipital carina very shortly present behind lateral ocelli; POL = 0.5; OL = 1; OOL = 8. Palpal formula 4/2. Pronotum shiny, finely punctate, unsculptured among punctures, crossed by strong transverse furrow. Mesoscutum slender, about 3 × as long as broad (14:5), shiny, finely punctate, unsculptured among punctures, without lateral pointed apophyses. Metanotum transversely striate, weakly excavated behind mesoscutellum. Sides of metanotum laterally protruding; protrusions rounded. Metapectal-propodeal disc subspheroidal, shiny, finely punctate, unsculptured among punctures; propodeal declivity strongly transversely striate. Mesopleuron finely transversely striate. Metapleuron strongly transversely striate. Meso-metapleural suture distinct and complete. Protarsomeres in following proportions: 14:3:5:16:24. Enlarged claw ( Fig. 222D ) with one small subapical tooth and one row of 6 peg-like setae. Protarsomere 5 ( Fig. 222D ) with inner side proximally not serrate and one row of 17 lamellae; apex with approximately 10 lamellae. Tibial spurs 1/0/1.

♂. Fully winged; body length 2.6 mm. Head black, except mandible testaceous; mesosoma black; metasoma brown; legs brown, except tarsomeres 1–4 and protibia testaceous–brown. Antenna filiform; antennomeres in following proportions: 6:4:8:8:7:7:7:6.5:6.5:8; antennomere 3 less than 3 × as long as broad (8:3). Head setose, dull, granulate and slightly rugose; frons without frontal line, with shiny and unsculptured central longitudinal stripe from anterior ocellus to clypeus; POL = 9; OL = 3; OOL = 5; greatest breadth of lateral ocelli slightly shorter than OL (2:3); vertex with shiny, unsculptured, ovoidal area between lateral ocelli and eyes, bordered anteriorly by strong and high carina (as in Fig. 208G ); temple distinct. Palpal formula 5/2. Mesoscutum dull, granulate. Notauli complete, posteriorly separated; minimum distance between notauli about as long as OL. Mesoscutellum and metanotum shiny, finely punctate, unsculptured among punctures. Metapectal-propodeal disc dull, reticulate rugose, without transverse or longitudinal keels; top with central longitudinal furrow. Forewing hyaline, without dark transverse bands or spots; distal part of 2r-rs&Rs vein slightly longer than proximal part (13:11); costal cell surrounded by strongly pigmented; other basal veins diaphanous. Dorsal process of paramere ( Fig. 220D ) shorter than volsella and with distal half broadened. Tibial spurs 1/1/2.

Material examined. Type: ♀ holotype: SOUTH AFRICA: Western Cape, Koeberg Nature Reserve , near dams, 33.637152°S 18.414520°E, 8.XII.2014, sweeping, M. Olmi leg., SAM-HYM-P086344 ( SAMC). Paratype: same locality label as holotype, C. 8.XII.2014, B. 11.XII.2014, Sf. Summer 2015, reared from a nymph of Strongylodemas breviceps Fennah , 1♂ ( MOLC) .

Hosts. Fulgoridae , Strongylodematinae: Strongylodemas breviceps Fennah (A. Emeljanov det.). Strongylodematinae belong to the family Fulgoridae (Emeljanov, personal comm.) and not Dictyopharidae , as attributed by other authors.

Distribution. South Africa.

Etymology. The species is named koebergensis after the collection site in the Koeberg Nature Reserve.

Remarks. The chela of G. koebergensis has one small subapical tooth on the enlarged claw. Additionally, its antenna lacks ADOs. Normally, species with this combination of characters parasitize Cicadomorpha. On the contrary, G. koebergensis parasitizes Fulgoridae (Fulgoromorpha) .

Figures

FIGURE 208. Gonatopus species. A, B: G. camerounensis Olmi, ♀ holotype: mesoscutum + mesoscutellum + metapectal-pro- podeal disc + propodeal declivity in dorsal view (A); mesosoma in lateral view (B). C: G. communis Olmi, ♀ paratype: head in dorsal view. D–G: G. cornutus (Benoit), ♀ from South Africa, Uitkyk Pass: head in dorsal view (D); mesosoma in dorsal (E) and lateral (F) view. G: G. cornutus (Benoit), ♂ from Namibia, 89 km S Keetmanshoop: head in dorsal view. H: G. cuambensis Olmi, ♀ holotype: mesosoma in lateral view. I: G. delvarei Olmi, ♀ holotype: mesoscutum + mesoscutellum + metapectal-pro- podeal disc + propodeal declivity in dorsal view. Scale bar: A: 0.68 mm; B: 0.98 mm; C: 0.30 mm; D: 0.16 mm; E, F: 0.78 mm; G: 0.20 mm; H: 1.96 mm; I: 0.69 mm.

FIGURE 218. Gonatopus koebergensis Olmi, Copeland & van Noort sp. nov., ♀ holotype: mesosoma in dorsal (A) and lateral (B) view; head in frontal view (C); chela (D).

FIGURE 220. ♂ genitalia of Gonatopus species. A: G. guigliae (Benoit): ♂ from Mozambique, Catembe: dorsal process of paramere. B, C: G. incognitus Olmi: ♂s from Nigeria, Ibadan (B), and Tanzania, Pongwe (C). D: G. koebergensis Olmi, Cope- land & van Noort sp. nov.: ♂ paratype. E: G. okahandjae Olmi: ♂ from the Cape Verde Islands, São Jorge dos Orgãos. F: G. ridens Olmi: ♂ from South Africa, Blue Mountain Ranch Bed & Breakfast. Scale bar: A, C, F: 0.06 mm; B: 0.08 mm; D: 0.17 mm; E: 0.09 mm.

FIGURE 222. Chelae of Gonatopus species holotypes. A: G. johnsi Olmi. B: G. kanyawarus Olmi, van Noort & Guglielmino. C: G. karibibensis Olmi. D: G. koebergensis Olmi, Copeland & van Noort sp. nov. E: G. kolyadai Olmi. Scale bar: A, E: 0.13 mm; B, D: 0.19 mm; C: 0.11 mm.