Anteon lankanum Olmi, 1984

Xu, Zaifu, Olmi, Massimo & He, Junhua, 2013, Dryinidae of the Oriental region (Hymenoptera: Chrysidoidea), Zootaxa 3614 (1), pp. 1-460 : 124-125

63. Anteon lankanum Olmi, 1984

(Plate 32F)

Anteon lankanum Olmi 1984: 441 ; Xu et al. 2011 g (Suppl.): 8.

Anteon planum Xu & He 1999b: 217 ; type locality: Mt. Tianmushan (Zhejiang, China); He & Xu 2002: 190; syn. nov.

Description of Female. Fully winged; length 2.4–2.7 mm. Head black, except mandible, clypeus and gena yellow-whitish; face with anterior half yellow-whitish and posterior half black; vertex of head black; part of ventral side of head yellow. Occasionally temple testaceous. Antenna yellow-whitish. Prothorax black, except pronotal tubercle white or testaceous; occasionally posterior margin of pronotum brown-testaceous; occasionally pronotum with lateral regions of posterior surface testaceous. Mesothorax, metathorax and propodeum black. Occasionally lateral regions of scutum partly testaceous. Legs yellow-whitish. Petiole black. Metasoma black or brown. Antenna clavate; antennal segments of holotype of A. lankanum in following proportions: 11:7:7:7:7:7:6:7:7:9; antennal segments of holotype of A. planum in following proportions: 5.5:3.3:3.3:3.3:3.0:3.0:3.0:3.0:3.0:5.2.Head shiny, punctate, unsculptured among punctures, with anterior half of face slightly rugose. Head hairless, except dense and long hairs on yellow frontal spot. In specimen from China, Naban River National Nature Reserve, vertex behind ocellar triangle rugose. Frontal line incomplete. Occipital carina complete. Head of holotype of A. lankanum with POL = 3; OL = 6; OOL = 5; OPL = 4; TL = 5; greatest breadth of the posterior ocelli shorter than OPL (2:4). Head of holotype of A. planum with POL = 1.5; OL = 3.0; OOL = 3.0; OPL = 2.3; TL = 3.5; greatest breadth of posterior ocelli shorter than OPL (1:2.3). In specimen from China, Nanling National Nature Reserve, POL = 3; OL = 5; OOL = 3.5; OPL = 3; TL = 5; greatest breadth of posterior ocelli slightly shorter than OPL (2.5:3). Pronotum shiny, hairy, punctate, unsculptured among punctures, rugose near anterior margin; pronotal tubercle reaching tegula. Pronotum slightly longer than scutum (14:11). Scutum, scutellum and metanotum shiny, smooth, punctate, unsculptured among punctures. Notauli incomplete, reaching 0.65–0.70 length of scutum. Propodeum with transverse keel between dorsal and posterior surfaces; posterior surface with two longitudinal keels, with median area sculptured by several slight striae or keels and lateral areas reticulate rugose; dorsal surface of propodeum shorter than posterior surface (6:8). In specimen from China, Taiwan, Meifeng, median area of posterior surface of propodeum partly smooth. In specimen from China, Mt. Yinggeling, median area of posterior surface of propodeum completely reticulate rugose. Fore wing hyaline, without dark transverse band; distal part of stigmal vein shorter than proximal part (4.5:10, or 2:6). Protarsal segments of holotype of A. lankanum in following proportions: 9:3:3:9:19. Protarsal segments of holotype of A. planum in following proportions: 4.0:1.3:1.5:5.3:10.0. Enlarged claw ( Plate 32F ) with proximal prominence bearing one long bristle. Segment 5 of protarsus ( Plate 32F ) with basal region much shorter than distal one, with two rows of 12–26 lamellae; distal apex with two–five lamellae. Tibial spurs 1/1/2.

Male. Unknown.

Material examined. Types: ♀ holotype of A. lankanum : SRI LANKA: Kandy District, 4.5 mi. W Maskeliya, Adams Peak Trail , 1690–1770 m, 13.VI.1978, K.V. Krombein leg. ( USNM) ; ♀ holotype of A. planum : CHINA: Zhejiang, Mt. Tianmushan , 2–4.VI.1990, Zuhua Shi leg. ( ZJUC) (see remarks) . Other material. CHINA: Guangdong, Nanling National Nature Reserve, 4–5.X.2004, 1–6.X.2004, Zaifu Xu leg. , 2♀♀ ( SCAU); Guangdong, Meixian County, Jiaying University, 20–24.V.2012, YPT, Tiande Wu leg. , 1♀ ( SCAU); Hainan, Mt. Yinggeling , 17–20.VII.2010, Huayan Chen leg. , 1♀ ( SCAU) ; Taiwan, Nantou, Meifeng, 2150 m ( TARI) ; Taiwan, Taichung, Anmashan, 2275 m ( TARI) ; Taiwan, Taitung, Lanyu ( TARI) ; Yunnan, Lugu Lake, Luo Shui , 27°45'N 100°45'E, 8–9.VII.1992 ( OLL) ; Yunnan, Jinghong, Naban River National Nature Reserve , 19–23.VII.2011, YPT, Nasen Wei et al. leg ., 1♀ ( SCAU) .

Hosts. Unknown.

Distribution. China (Zhejiang, Guangdong, Hainan, Taiwan, Yunnan), Sri Lanka (Kandy).

Remarks. The holotype of A. planum (only known specimen of this species) was a female deposited in ZJUC. However, presently it is lost. In 2005 we examined a pin with the original labels, but with no glued specimens. According to Professor Zaifu Xu, this holotype is lost, because it was destroyed by Psocoptera. According to the original description, there are no doubts that A. planum is a junior synonym of A. lankanum .

Figures

PLATE 32. A, B, E, F. Chelae, holotypes. C, D. Male genitalia. A. Anteon kresli (from Olmi 2008b). B. A. krombeini (from Olmi 1984). C. A. krombeini from Sri Lanka (from Olmi 1984). D. A. laeve, holotype (from Xu et al. 1998). E. A. laminatum (from Olmi 1987a). F. A. lankanum (from Olmi 1984). Scale bar 0.32 mm for A, 0.34 mm for B, 0.33 mm for C, 0.23 mm for D, 0.26 mm for E and F.