Gonatopus ntumenensis, Olmi, 2009

Olmi, Massimo, 2009, New species of South African Dryinidae (Hymenoptera: Chrysidoidea), African Invertebrates 50 (2), pp. 447-447 : 453-454

Gonatopus ntumenensis sp. n. Fig. 8 Etymology: This species is named after the type locality, near Ntumeni Nature Reserve .

Description:

Female.

Apterous; length 3.37 mm. Head brown, with mandibles, anterior margin of face, malar space, clypeus and a short median longitudinal stripe near clypeus testaceous; antennae brown, with segment 1 testaceous and segment 10 whitish; prothorax testaceous-brown; scutum testaceous, with anterior third dark; rest of mesosoma brown-testaceous and partly brown; gaster brown; legs brown, with part of coxae, trochanters, articulations and tarsi testaceous or testaceous-brown. Antennae clavate; antennal segments in the proportions 9:5:10:5:4:4:4:4:4:9. Head excavated, dull, granulated; frontal line complete; ocellar triangle divided into two halves by median longitudinal keel; occipital carina incomplete, shortly present behind the posterior ocelli; POL=1; OL=3; OOL=6.5. Palpal ratio 4:2. Pronotum hairless, crossed by a strong transverse impression, shiny, smooth and without sculpture. Scutum sculptured by many longitudinal striae, laterally without pointed prominences. Scutellum shiny, smooth, flat. Metanotum short, dull, sculptured by many transverse striae, small hollow behind scutellum; sides of metanotum rounded, not laterally protruding. Metathorax+propodeum dull, with disc rugose and anterior surface sculptured by numerous irregular striae; anterior surface of metathorax+propodeum with median longitudinal furrow; posterior surface of propodeum, mesopleura and metapleura transversely striate. Meso-metapleural suture obsolete. Fore tarsal segments in the proportions 13:3:5:14:22. Enlarged claw (Fig. 11) with large subapical tooth and a row of 6 lamellae. Segment 5 of fore tarsus ( Fig. 8 ) with two rows of 12 and 8 lamellae; distal apex of segment 5 with a group of approx. 13 lamellae. Tibial spurs 1,0,1.

Male. Unknown.

Holotype: ^SOUTH AFRICA: KwaZulu-Natal: Eshowe , nr Ntumeni Nat. Res., 28 ° 52.08'S: 31 ° 22.41'E, alt. 680 m, 26–28.x.2007, yellow pan trap, V. Kolyada & M. Mostovski; “ Gonatopus ntumenensis sp. n. M. Olmi det. 2008, ^” [red label] ( NMSA). Note: The specimen was collected on a slope of a ravine with disturbed indigenous vegetation and a stream at the bottom; the ravine is surrounded by sugar-cane fields and Eucalyptus plantations.

Hosts: Unknown.

Comparison: G. ntumenensis belongs to the G. pilosoides group. The female of G. ntumenensis is similar to those of G. festivus Olmi, 1994 (see Olmi 1994 a), G. ruens ( Olmi, 1984) , and G. amoenus Olmi, 1994 (see Olmi 1994 a). The main differences are as follows: in G. ntumenensis , disc and anterior surface of metathorax+propodeum rugose and sculptured by irregular striae; head with OL about three times as long as POL; ocellar triangle divided into two halves by a median longitudinal keel; in the other three species, disc and anterior surface of metathorax+propodeum smooth, without sculpture, or very slightly granulated; head with OL twice or less than twice as long as POL; ocellar triangle without a median longitudinal keel.

Figures

Figs 7, 8. Chelae: (7) Dryinus daviesi sp. n., female holotype; (8) Gonatopus ntumenensis sp. n., female holotype. Scale bars = 0.14 mm.