Anteon magnatum Kim & Lee

Kim, Chang-Jun & Lee, Jong-Wook, 2013, A review of the genus Anteon Jurine, 1807 (Hymenoptera: Dryinidae) from South Korea, with description of a new species, Zootaxa 3626 (4), pp. 517-530 : 524-526

15. Anteon magnatum Kim & Lee , sp. nov.

( Figs 2–8 )

Type material. Holotype, 1Ƥ, SOUTH KOREA: [GB] Yeongyang-gun, Subi-myeon, Mt. Baegam, 7.V.1999, J.W. Lee (YNU). Paratypes, SOUTH KOREA: 1Ƥ, [GW] Wonju-si, Socho-myeon, Hakgok-ri, Mt. Chiak National Park, 29.V–19.VI.2010 (MT), J.W. Lee (YNU); 2Ƥ, [CN] Seosan-si, Haemi-myeon, Hanseo Univ., 22.IV-6.V.2009 (MT), J.W. Lee (YNU); 1Ƥ, [GB] Gyeongju-si, Hyeongok-myeon, Namsan-ri, 18–25.VIII.2005 (MT), J.T. Mun (YNU); 1Ƥ, [CB] Chungju-si, Jongmin-dong, Mt. Gyemyeongsan, 14.VIII.1997, J.W. Lee (YNU); 1Ƥ, [JB] Jeongeup-si, Yongsan-dong, 19.V.2004, K.B. Kim (YNU); 1Ƥ, [CN] Daejeon-si, Wa-dong, 36°24.02'N, 127°25.98'E, 8.VIII–6.X.2006, MT for edge, wild rose patch, P. Tripotin leg. (CNC).

Description. Holotype (FEMALE). Head. Broader than mesosoma, shiny, smooth, completely reticulate rugose and covered with hairs; clypeus with oral margin rounded and covered with long hairs; face with two lateral longitudinal keels near orbits directed towards antennal toruli; frontal line complete; occipital carina complete; POL: 10; OL: 6; OOL: 10; OPL: 10; TL: 7; antenna clavate; antennal segments in following proportions: 26.0: 11.5: 15.5: 10.5: 10.0: 10.0: 11.0: 10.5: 11.0: 13.0.

Mesosoma. Pronotum with anterior half strongly sculptured by transverse keels and rugose; posterior half shiny, smooth, transverse and with longitudinal keels and median longitudinal groove; pronotal tubercle reaching tegula. Scutum and scutellum shiny, smooth and punctate; notauli incomplete, reaching approximately 0.5× length of scutum. Metanotum shiny, smooth, unsculptured, except strong median keel. Scutellum and metanotum 0.45× and 0.3× as long as scutum. Propodeum with strong transverse keel between dorsal and posterior surface; dorsal surface 0.8× as long as posterior surface in lateral view, dull, reticulate rugose, and covered with short hairs; posterior surface with two complete longitudinal keels; upper part of posterior surface median area as rugose as lateral area and lower part transversally striate. Wing. Wings fully developed. Fore wing hyaline, weakly yellowish, without dark transverse bands, covered with brown setae; distal part of stigmal vein much shorter than proximal part, 4.0× as long as proximal part. Legs. Enlarged claw with proximal prominence bearing one long bristle. Foretarsal segments in following proportions: 14: 2: 2: 3: 8. Arolium very large, about as long as enlarged claw. Fifth segment of foretarsus ( Fig. 6 ) with one row of 3 lamellae + 11 bristles, laterally expanded and forming wide and slightly concave lamina (concavity with one row of 16 bristles); distal apex with two rows of 10 lamellae.

Metasoma. Shiny and smooth; segments 10 with numerous short setae.

Color. Head black, except distal third of mandible yellowish-brown; antenna reddish-brown, except segments 6–10 dark-brown; legs brown, with basal part of fore- and midcoxae, almost completely testaceous hindcoxae and hindfemora almost completely black; fore- and midfemora dark-brown; metasoma dark-brown.

Measurements. Head length 1.09 mm, width 1.63 mm; mesosoma length 2.40 mm, maximum width 1.39 mm; metasoma length 2.89 mm; fore wing length 4.29 mm; total body length 6.38 mm.

Variations. Color of mandible very variable, almost completely black or distal one-third and distal two-thirds almost completely yellowish-brown; antennal segments 5–10 or 6–10 dark-brown; legs of some specimens almost completely yellowish-brown (partly whitish); pronotum longitudinal groove weakly or distinctly present; notauli 0.5× length of scutum or short and hardly visible near anterior margin of scutum; fifth segment of foretarsus with one row of 2–4 lamellae + 6–12 bristles, laterally expanded and forming wide and slightly concave lamina (concavity with one row of 16–18 bristles); distal apex with one or two rows of 6–10 lamellae; Head length 0.77–1.09 mm (mean= 0.97 mm), width 1.23–1.63 mm (1.43 mm); mesosoma length 1.64–2.40 mm (2.19 mm), maximum width 1.03–1.48 mm (1.28 mm); metasoma length 1.84–2.89 mm (2.41 mm); fore wing length 2.83–4.33 mm (3.72 mm); total body length 4.25–6.38 mm (5.57 mm).

MALE. Unknown.

Host. Unknown.

Distribution. South Korea.

Remarks. By segment 5 of foretarsus laterally expanding and forming wide and slightly concave lamina, Anteon magnatum sp. nov. is similar to A. laminatum Olmi, 1987 , known from the Oriental region. The main difference between these two species regards the posterior surface of propodeum, with two longitudinal keels in A. magnatum and without longitudinal keels in A. laminatum .

Etymology. The specific name is derived from the Latin words magnum and latum, which mean ‘‘large’’and ‘‘wide’’, respectively.

Figures

FIGURES 2 – 8. Anteon magnatum sp. nov., Ƥ. 2. Lateral habitus; 3. Head in dorsal view. 4. Head in anterior view; 5. Fore wing; 6. Chela; 7. Scutum; 8. Propodeum. Scale bars: 1.0 mm for 2; 0.5 mm for 5; 0.2 mm for 3, 4, 7, 8; 0.1 mm for 6.