Gonatopus fortis, Olmi, 2007

Olmi, Massimo, 2007, New species of Afrotropical Dryinidae (Hymenoptera: Chrysidoidea), with description of a new genus and a new subfamily, African Invertebrates 48 (2), pp. 199-232 : 221-222

Gonatopus fortis sp. n. Figs 26 , 27 Etymology: Latin fortis (robust).

Description:

Female.

Apterous; length 3.31 mm. Head black, with mandibles, clypeus, anterior margin of face and part of genae testaceous; antennae black, with segments 1 and 2 testaceous; mesosoma black, with lateral margins of pronotum brown-testaceous and scutellum almost completely yellow; occasionally mesosoma completely black; gaster brown; legs brown, with tibiae, tarsi and trochanters testaceous-brown. Head excavated, shiny, hairless, smooth, without sculpture; frontal line complete; occipital carina absent; temples prominent, smooth, without sculpture, crossed by sharp carina ( Fig. 26 ). Antennae clavate; antennomeres of holotype as following: 8:6.5:10.5:9:8:7:6.5:6.5:6:7. Third antennal segment as broad as segment 2. POL = 1; OL = 2; OOL = 7; greatest diameter of posterior ocelli = 2. Maxillary palpi 4-segmented; labial palpi 2-segmented. Pronotum crossed by strong transverse impression, smooth, shiny, without sculpture. Scutum very long, about twice as long as broad (11:5.5), shiny, with a few short longitudinal striae, without lateral points. Scutellum flat, shiny, smooth, circular. Stalk between pronotum and metanotum (composed of scutum + scutellum) about 3 times as long as broad. Metanotum very long, transversely striate, not hollow behind scutellum. Metathorax + propodeum shiny, with posterior surface transversely striate; anterior surface shiny, without sculpture; disc with track of median longitudinal furrow. Mesopleura shiny, with posterior half smooth and without sculpture, and anterior half transversely striate. Metapleura transversely striate. Meso-metapleural suture distinct and complete. Fore tarsal segments in following proportions: 15:2.5:4:13:21. Enlarged claw ( Fig. 27 ) with small subapical tooth, 4 peg-like hairs and 1 bristle. Segment 5 of front tarsus ( Fig. 27 ) with 1 row of 19 lamellae; distal apex of segment 5 with group of about 14 lamellae. Tibial spurs 1, 0, 1 .

Male. Unknown.

Holotype: ^“ NAMIBIA: 51 km S Grünau , along Rd B1, C – 1.iii.2006, B – 3.iii.2006, E – 1.iv.2006, reared from an adult female of Aconurella compta (Naudé) , M. Olmi ”; [red] “ Gonatopus fortis sp. n. M. Olmi det. 2006, ^” (NNIC).

Paratypes: NAMIBIA: 89 km S Keetmanshoop, along Rd B1, C – 1.iii.2006, B – 4.iii.2006, E – 1.iv.2006, reared from a nymph of A. compta, M. Olmi , 1^(MOLC); same locality label, C – 1.iii.2006, B – 3.iii.2006, E – 31.iii.2006, reared from a nymph of A. compta, M. Olmi , 1^(NNIC); same locality label, C – 1.iii.2006, B – 3.iii.2006,E – 3.iv.2006, reared from a nymph of A. compta, M. Olmi , 1^(SAMC); 42 km N Kalkrand, along Rd. B1, 9.iii.2006, M. Olmi, 1^(MOLC); 38 km W Keetmanshoop, along Rd B4, C – 10.iii.2006, B – 11.iii.2006, E – 11.iv.2006, reared from an adult of A. compta, M. Olmi , 1^(NNIC); same locality label, C – 10.iii.2006, B – 18.iii.2006, E – 11.iv.2006, reared from a nymph of A. compta , 1^(NNIC).

Hosts: In Namibia, Aconurella compta (Cicadellidae) .

Comments: G. fortis belongs to G. incognitus group. The female is similar to that of G. leptothorax (Ceballos, 1936) , but it may be distinguished by the less slender stalk between pronotum and metanotum (about 3 times as long as broad in G. fortis ; about 4 times as long as broad in G. leptothorax ) and the different sculpture of the temples (rugose in G. leptothorax ; smooth in G. fortis ).

Figures

Figs 24–26. (24, 25) Gonatopus cornutus (Benoit), male: (24) from 89 km S Keetmanshoop, head from behind, scale bar = 0.13 mm; (25) from Uitkyk Pass, genitalia, scale bar = 0.04 mm; (26) G. fortis sp. n., female holotype, head in dorsal view, scale bar = 0.22 mm.

Figs 27–29. Chelae of female holotypes:(27) Gonatopus fortis sp. n., scale bar = 0.05 mm; (28) G. karibibensis sp. n., scale bar = 0.04 mm; (29) G. kolyadai sp. n., scale bar = 0.07 mm.