Dryinus achterbergi Olmi, 1991

Xu, Zaifu, Olmi, Massimo & He, Junhua, 2013, Dryinidae of the Oriental region (Hymenoptera: Chrysidoidea), Zootaxa 3614 (1), pp. 1-460 : 257-258

1. Dryinus achterbergi Olmi, 1991

( Plate 74B, C )

Dryinus achterbergi Olmi 1991: 265 ; Xu et al. 2011 g (Suppl.): 12.

Description of Female. Fully winged; length 4.0– 4.5 mm. Head black, except mandible and part of clypeus testaceous; antenna testaceous; mesosoma black, except lateral margins of pronotum reddish; metasoma brown; legs testaceous, except metacoxa partly black. In specimen from China, Mt. Yinggeling, antenna testaceous, except segment 3 and segments 7–9 weakly darkened; pronotum black, except posterior collar and lateral margins testaceous; legs testaceous-reddish, except meso- and metatibia weakly darkened. Antenna clavate; antennal segments in following proportions: 8:5:28:14:11:7:7:6:6.5:10. Head flat, dull, granulated, with numerous longitudinal keels on face; frontal line incomplete, not present near clypeus; occipital carina complete; POL = 2.5; OL = 2; OOL = 7; OPL = 2; TL = 2. Pronotum shiny, unsculptured, with numerous longitudinal keels on disc and lateral regions; pronotum crossed by two transverse impressions, anterior impression weak and posterior one strong; posterior collar short; pronotal tubercle not reaching tegula. Scutum dull, granulated. Notauli almost complete, almost reaching posterior margin of scutum. Scutellum shiny, smooth, weakly granulated. Metanotum dull, rugose. Propodeum reticulate rugose, with two longitudinal keels on posterior surface. Fore wing with two dark transverse bands; distal part of stigmal vein much longer than proximal part (18:9). Protarsal segments of specimen from China, Mt. Yinggeling, in following proportions: 22:4:7:18:28. Enlarged claw not spatulate ( Plate 74B ), with one strong subapical tooth and one row of 8–12 lamellae. Segment 5 of protarsus ( Plate 74B ) with two rows of 26–27 lamellae; distal apex with about 20 lamellae. Tibial spurs 1/1/2.

Description of Male. Fully winged; length 2.5–4.2 mm. Head black, except mandible testaceous; antenna testaceous, except segments 3–10 darkened; mesosoma black; metasoma brown; legs testaceous. Antenna filiform; antennal segments in following proportions: 8:5:16:10:10:10:9:9:8:10. Head dull, completely reticulate rugose; frontal line complete; occipital carina complete, laterally reaching eyes; temple absent; POL = 6; OL = 2; OOL = 3; OPL = 0.5; vertex with smooth ovoidal area situated between posterior ocelli and eyes. Scutum dull, granulated and reticulate rugose. Notauli complete, posteriorly separated; minimum distance between notauli longer than greatest breadth of posterior ocelli (7:3.5). Scutellum dull, granulated. Metanotum rugose. Propodeum reticulate rugose, with median longitudinal keel on posterior surface. Fore wing completely weakly darkened; distal part of stigmal vein shorter than proximal part (12:15). Genitalia with distivolsella situated near distal apex of penis ( Plate 74C ). Tibial spurs 1/1/2.

Material examined. Types: holotype ♀: MALAYSIA: Sabah, Danum Valley Field Camp , 240 m, 24.II–18.III.1987, Malaise trap, C. van Achterberg leg. ( RNHL). Paratypes: same locality label as holotype, 15–21.III.1987, 21–25.III.1987, 14–20.III.1987, 24.II–18.III.1987, 24.II–18.III.1987, 19–26.III.1987, 24.II–24.III.1987, 39♂ (30 in RNHL, nine in AMNH). Other material. CHINA: Hainan, Baisha, Mt. Yinggeling , 1–2.V.2008, Jingxian Liu leg., 1♀ ( SCAU) .

Hosts. Unknown.

Distribution. China (Hainan), Malaysia (Sabah).

Figures

PLATE 74. A, B, D, E. Chelae. C. Male genitalia. A. Dryinus sp. of group 4 (from Olmi 1984). B, C. D. achterbergi, holotype (B) and paratype (C) (from Olmi 1991). D. D. adgressor, holotype (from Xu et al. 2006c). E. D. alboniger, holotype (from Olmi 1992a). Scale bar 0.39 mm for A, 0.18 mm for B, 0.22 mm for C, 0.26 mm for D, 0.32 mm for E.