Gonatopus, Ljungh, 1810

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

Afrotropical Gonatopus Group 3: key to the ♀♀

1. Enlarged claw with apex very broad ( Fig. 179D )................................................ G. fuscus (Olmi)

- Enlarged claw with apex tapering, not broad ( Figs 179A, B )................................................... 2

2. Metapectal-propodeal disc with strong median longitudinal furrow ( Fig. 178A ).................................... 3

- Metapectal-propodeal disc without strong median longitudinal furrow ( Figs 178B , 186B )........................... 4

3. Metanotum weakly excavated behind mesoscutellum ( Fig. 180A )............................. G. acuminatus (Olmi)

- Metanotum deeply excavated behind mesoscutellum ( Fig. 180H )................................... G. nicator Olmi

4. Meso-metapleural suture obsolete (at most slightly visible in posterior half)...................................... 5

- Meso-metapleural suture distinct and complete............................................................. 6

5. Metapectal-propodeal disc fusiform; metanotum not protruding laterally, without lateral pointed or rounded protrusion.............................................................................................. G. ruber Olmi

- Metanotum with two lateral pointed protrusions ( Fig. 180G )................................... G. madecassus Olmi

6. Mesoscutum without two lateral pointed protrusions ( Fig. 183A ); occasionally with three very small pointed protrusions corresponding to three carinae located on lateral regions of mesoscutum ( Fig. 183E ).................................. 7

- Mesoscutum with two strong lateral pointed protrusions ( Fig. 178B )........................................... 10

7. Enlarged claw with subdistal tooth located very close to most distal lamella (see Fig. 187B )....................................................................................... G. scholtzi Olmi, Copeland & van Noort , sp. nov.

- Enlarged claw with subdistal tooth located very far from most distal lamella (see Figs 179C , 182F ).................... 8

8. Metanotum laterally rounded ( Fig. 183A )......................... G. robertsoni Olmi, Copeland & van Noort , sp. nov.

- Metanotum laterally with two slightly pointed protrusions ( Figs 180B , 183E )..................................... 9

9. Mesosoma testaceous-reddish................................................................ G. ceres (Olmi)

- Mesosoma mostly black, except mesoscutum mostly yellow, metanotum brown and posterior apex of propodeal declivity yellow................................................................... G. schwarzorum Guglielmino & Olmi

10. Metapectal-propodeal disc fusiform; metanotum not protruding laterally, without lateral pointed or rounded protrusions ( Fig. 180E )............................................................................................. 11

- Metanotum with two lateral pointed or rounded protrusions ( Figs 178B , 186A, B )................................ 12

11. Mesosoma completely black................................. G. hantamensis Olmi, Copeland & van Noort , sp. nov.

- Prothorax and mesoscutum testaceous, or brown-reddish; rest of mesosoma black, with distal extremity of propodeal declivity reddish................................................................................... G. cafer Olmi

12. Head with OL 2–3 × as long as POL; mesoscutum very slender, twice as long as broad (length calculated from the anterior margin to imaginary line joining two lateral pointed apophyses of mesoscutum) ( Fig. 178B ).............. G. mixtus Olmi

- Head with OL less than twice as long as POL; mesoscutum less slender, about as long as broad (length calculated from anterior margin to imaginary line joining two lateral pointed apophyses of mesoscutum) ( Figs 186A, B )...................... 13

13. Head shiny, unsculptured, except frontal line; apex of protarsomere 5 with less than 20 lamellae ( Fig. 182E ) G. pluvialis Olmi

- Head dull, with many longitudinal striae on frons and many transverse striae on sides of ocelli; apex of protarsomere 5 with more than twenty lamellae ( Fig. 187A )........................................................ G. ruvidus Olmi

Figures

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.

FIGURE 182.Chelae of Gonatopus species holotypes.A: G. hantamensis Olmi, Copeland & van Noort sp. nov. B: G. madecassus Olmi. C: G. mixtus Olmi. D: G. nicator Olmi. E: G. pluvialis Olmi. F: G. robertsoni Olmi, Copeland & van Noort sp. nov. Scale bar: A, D, F: 0.09 mm; B: 0.13 mm; C, E: 0.07 mm.

FIGURE 183. Gonatopus: group 3. A, B, G: G. robertsoni Olmi, Copeland & van Noort sp. nov.: mesoscutum + mesoscutellum + metapectal-propodeal disc + propodeal declivity in dorsal view (A) and mesosoma in lateral view (B) of ♀ holotype; chela of paratype from South Africa, 33°44.090’S 21°55.654’E (G). C, D: G. scholtzi Olmi, Copeland & van Noort sp. nov., ♀ holotype: mesoscutum + mesoscutellum + metapectal-propodeal disc + propodeal declivity in dorsal view (C) and mesosoma in lateral view (D). E, F: G. schwarzorum Guglielmino & Olmi, ♀ holotype: mesosoma in dorsal (E) and lateral (F) view. H: chela of G. ruber (Olmi), holotype. Scale bar: A, C: 0.60 mm; B: 0.90 mm; D: 0.93 mm; E, F: 1.00 mm; G: 0.07 mm; H: 0.08 mm.

FIGURE 186. Habitus of Gonatopus species holotypes. A: G. pluvialis Olmi, ♀ in dorsal view. B, C: G. ruvidus Olmi, ♀ in dorsal (B) and lateral (C) view. D: G. bellicosus Olmi, Copeland & van Noort sp. nov.: ♀ in dorsal view; mesosoma sculpture. Scale bar: A: 3.00 mm.

FIGURE 187. Chelae of Gonatopus species holotypes.A: G. ruvidus Olmi. B: G. scholtzi Olmi, Copeland & van Noort sp. nov. C: G. schwarzorum Guglielmino & Olmi Scale bar: A: 0.14 mm; B: 0.05 mm; C: 0.07 mm.