Pseudodryinus townesi ( Olmi, 1984 )

Olmi, Massimo, Copeland, Robert S. & Noort, Simon Van, 2019, Dryinidae of the Afrotropical region (Hymenoptera, Chrysidoidea), Zootaxa 4630 (1), pp. 1-619 : 379-380

2. Pseudodryinus townesi ( Olmi, 1984)

( Figs 154C, D , 155D )

Thaumatodryinus townesi Olmi 1984: 692 .

Pseudodryinus townesi (Olmi) : Olmi 1991: 369; 2006: 43; Olmi et al. 2016: 77 .

Description. ♀ ( Figs 154C, D ). Fully winged; body length 3.4–5.6 mm. Completely testaceous, except petiole black; antenna brown, except scape and pedicel testaceous. In specimen from Democratic Republic of the Congo, 04°16’S 17°11’E, head brown, except mandible, clypeus, anterior half of frons, ventral side and part of occiput testaceous; antenna testaceous-brown, except scape and pedicel testaceous; mesosoma testaceous, except scutum and metanotum brown; metapectal-propodeal disc and propodeal declivity black; metanotum testaceous, except petiole and part of first tergite brown; legs testaceous. Antenna very slender ( Figs 154C, D ), clavate; holotype with antennomeres 1–4 in following proportions: 7:5:50:40 (antennomeres 5–10 missing in holotype). Head flat, shiny, slightly alutaceous; occiput strongly excavated; frontal line absent; frons without lateral keels, with short median furrow in front of anterior ocellus; occipital carina complete; POL = 6; OL = 3.5; OOL = 8; OPL = 1.5; TL = 7. Palpal formula of type material 4/2; in specimen from Central African Republic, 3°02.01’N 16°24.57’E, palpal formula 6/3. Pronotum shiny, unsculptured, crossed by transverse impression; pronotal tubercle reaching tegula. Mesoscutum, mesoscutellum and metanotum shiny, unsculptured. Notauli complete, posteriorly separated, very converging. Metapectal-propodeal disc dull, granulate, with some areolae or tracks of areolae, with transverse posterior keel; propodeal declivity with two longitudinal keels and median area dull, granulate. In specimen from Central African Republic, 3°02.01’N 16°24.57’E, metapectal-propodeal disc sculptured by large areolae, not granulate, with two median parallel irregular longitudinal keels; propodeal declivity with two longitudinal keels and large areolae similar to those of metapectal-propodeal disc. Forewing hyaline, without dark transverse bands; distal part of 2r-rs&Rs vein much longer than proximal part; 2R1 cell closed. Hind wings hyaline, not darkened. Protrochanter about as long as profemur (44:46), procoxa (44:46) and protibia (44:42). Protarsomeres in following proportions: 16:4:8:31:41. Enlarged claw ( Fig. 155D ) with one large subdistal tooth and one row of six lamellae. Protarsomere 5 ( Fig. 155D ) with one row of nine lamellae; apex with 10 lamellae. Tibial spurs 1/1/2.

♂. Unknown (see remarks).

Material examined. Types: ♀ holotype: UGANDA: Kampala ( AEIC). Paratypes: SOUTH AFRICA: Lim- popo, Tzaneen , 1♀ ( AEIC). UGANDA: same locality label as holotype, 1♀ ( AMNH). Other material: CENTRAL AFRICAN REPUBLIC: Sangha-Mbaéré Pref., Dzanga-Ndoki National Park, Mabéa Bai , 21.4 km 53° NE Bayanga, 3°02.01’N 16°24.57’E, 510 m, 6.V.2001, sweep, lowland rainforest, marsh clearing, CAR01-S48, S. van Noort leg. , 1♀ ( SAMC). DEMOCRATIC REPUBLIC OF THE CONGO: Haut-Uele, Wamba Territory, Kikongo Mission , 04°16’S 17°11’E, 18.IV.2006, seeping in riparian forest, S.L. Heydon & S.E. Stevenson leg. , 1♀ ( DEUCD) .

Hosts. Unknown.

Distribution. Central African Republic, Democratic Republic of the Congo, South Africa, Uganda.

Remarks. The ♂ tentatively attributed to Ps. townesi by Olmi (1984) cannot belong to teh genus Pseudodryinus , because the minimum distance between the notauli is longer than the greatest breadth of the lateral ocelli. For this reason it is now attributed to Thaumatodryinus Perkins ( Th. sokokensis Olmi 2007 ). In the specimen from Central African Republic, 3°02.01’N 16°24.57’E, both chelae are missing, so that it is not possible to check if it is a new species. The sculpture of the metapectal-propodeal disc is very different from that of the type material. In addition, the palpal formula 6/3 is not known in Pseudodryinus , being typical of Harpactosphecion . It is likely that the two genera are synonyms and Harpactosphecion gains priority. It is necessary to wait for additional specimens with complete chelae before reaching an informed decision about this potential synonymy.

Figures

FIGURE 154. A, B: Gonadryinus bicarinatus Guglielmino, Olmi, Marletta & Speranza, ♀ holotype: habitus in dorsal view (A); head and mesosoma in dorsal view (B). C, D: Pseudodryinus townesi (Olmi) in dorsal (C) and lateral (D) view; ♀ from Uganda, Kampala. Scale bar: A: 5.87 mm; B: 1.62 mm; C: 5.56 mm; D: 3.41 mm.

FIGURE 155. A, B: Gonadryinus bicarinatus Guglielmino, Olmi, Marletta & Speranza: chela of holotype (A) and paratype (B). C: Pseudodryinus paulyi Olmi: chela of holotype. D: Pseudodryinus townesi (Olmi): chela of holotype. Scale bar: A, B: 0.09 mm; C, D: 0.11 mm.