Two new species, Anteon liui sp. nov. and Anteon zhangae sp. nov., are described from China. The first species was collected in Henan Province, Mt. Baiyunshan, and Zhejiang Province, Mt. Fenyangshan; the second species was collected in Guizhou Province, Mt. Leigongshan. Anteon liui can be recognized from the related Oriental species A. hirashimai Olmi 1993 and A. austini Olmi 1991 by the different length of notauli (reaching about 0.65 length of scutum in A. liui, reaching 0.3–0.4 length of scutum in A. hirashimai and A. austini). Anteon zhangae can be recognized from the related Oriental species A. muiri Olmi 1984 by the following characters: in A. muiri, notauli reaching about 0.65 length of scutum; scutum weakly punctate; head with OOL more than twice as long as OL; in A. zhangae, notauli reaching about 0.8 length of scutum; scutum sculptured by large and deep punctures similar to areolae; head with OOL slightly longer than OL.
Dryinidae (Hymenoptera: Chrysidoidea) are parasitoids of Hemiptera Auchenorrhyncha (Guglielmino & Olmi 1997, 2006, 2007). Anteon Jurine 1807 is a genus present in all zoogeographical regions. About 326 species have been described from all continents (Olmi 1999). The genus was revised by Olmi (1984, 1991).
Ninety-seven species of Anteon are known from China. They were studied in the last 20 years mainly by Olmi (1991, 1993, 1995), He & Xu (2002), and Xu et al. (1998, 2001, 2003, 2006a, 2006b). However, in spite of the above papers, they are considered insufficiently known, both from systematic and biological points of view. The hosts of only 5 species are known, all belonging to Cicadellidae. In 2008 we have examined additional specimens of Anteon from P. R. China and have found 2 new species described herein.
MATERIALS AND METHODS
The descriptions follow the terminology used by He & Xu (2002) and Olmi (1984, 1994, 1999). The measurements reported are relative, except for the total length (head to abdominal tip, without the antennae), which is expressed in millimetres. In the descriptions, POL is the distance between the inner edges of the 2 lateral ocelli; OL is the distance between the inner edges of a lateral ocellus and the median ocellus; OOL is the distance from the outer edge of a lateral ocellus to the compound eye; OPL is the distance from the posterior edge of a lateral ocellus to the occipital carina; and TL is the distance from the posterior edge of an eye to the occipital carina.
All specimens studied in this paper are deposited in the Hymenoptera collection of South China Agricultural University, Department of Entomology, Guangzhou, Guangdong, P. R. China (SCAU).
SYSTEMATIC ACCOUNTS
Anteon liui sp. nov. (Fig. 1)
Description. Holotype female. Fully winged. Length 4.9–6.2 mm (holotype 4.9 mm). Head black, except mandibles testaceous; antennae testaceous, except segments 7–10 and dorsal side of segments 1–2 brown; mesosoma black; gaster brown; fore legs testaceous, except clubs of femora partly brown; mid and hind legs brown, except articulations testaceous. In a paratype from P. R. China, Mt. Baiyunshan, antennae testaceous, except segments 7–10 brown; legs testaceous, except hind coxae partly brown. Antennae clavate; antennal segments in the following proportions: 21:11:20:15:16:16:15:16:15:20. Head shiny; vertex and face partly reticulate rugose (sensu Olmi 1984) and strongly impressed by large punctures similar to areolae, except a smooth area in front of anterior ocellus and 2 smooth areas on the sides of posterior ocelli; face with 2 lateral longitudinal keels around orbits directed towards antennal toruli; frontal line complete; occipital carina complete; POL = 8; OL = 5; OOL = 9; OPL = 10; TL = 8; greatest breadth of posterior ocelli shorter than OL (4:5). Pronotum shiny, with anterior surface sculptured by strong transverse keels; posterior surface smooth, punctate, without sculpture among punctures, shorter than scutum (13:30). Scutum, scutellum and metanotum shiny, smooth, punctate, without sculpture among punctures. Notauli incomplete, reaching approximately 0.65 length of scutum. Propodeum with a strong transverse keel between dorsal and posterior surface; dorsal surface reticulate rugose; posterior surface with 2 complete longitudinal keels, lateral areas reticulate rugose and median area rugose and with a central smooth surface. Forewing hyaline, without dark transverse bands; distal part of stigmal vein much shorter than proximal part (5:21). Fore tarsal segments in the following proportions: 17:3:5:9:24. Fore tarsal segments 3 and 4 produced into a hook. Enlarged claw (Fig. 1) with a proximal prominence bearing a long bristle. Segment 5 of fore tarsus (Fig. 1) with basal part much longer than distal part (16:8), inner margin straight, 2 proximal lamellae and a group of about 25–40 lamellae situated in the distal part (in a paratype from P. R. China, Mt. Baiyunshan, there are 2 proximal lamellae, 3 medial lamellae and a group of many distal lamellae). Tibial spurs 1, 1, 2.
Male. Unknown.
Hosts. Unknown.
Holotype: Female, P. R. CHINA, Zhejiang Prov., Mt. Fenyangshan, Huangmaojian, 2.VIII.2008, Liu Jingxian, No. 200801155 (SCAU). Paratypes: Female: same label as holotype, No. 200801139 (SCAU); Female: Henan Prov., Songxian, Mt. Baiyunshan, 17.VIII.2008, Shi Min, No. 200801242 (SCAU).
Etymology: This species is named after the collector of the holotype Mr. Liu Jingxian.
Remarks. Anteon liui is similar to the Oriental species A. hirashimai Olmi 1993 (known from Burma, Malaysia, P. R. China, and Vietnam) and A. austini Olmi 1991 (known from Malaysia, P. R. China, Taiwan, and Thailand) because of the following characters: segment 4 of fore tarsus about 0.5 as long as segment 1; posterior surface of propodeum with 2 complete longitudinal keels; head almost completely reticulate rugose, black, except mandibles testaceous; scutum and scutellum punctate, without sculpture among punctures; notauli present. The above species of Anteon can be recognized by the different length of notauli, as follows:
1 Notauli reaching about 0.65 length of scutum A. liui sp. nov.
— Notauli reaching about 0.3 – 0.4 length of scutum 2
2 Segment 5 of fore tarsus provided of proximal and medial lamellae (Fig. 13A in Olmi 1991) A. hirashimai Olmi
— Segment 5 of fore tarsus without proximal and medial lamellae, provided of proximal and medial bristles (Fig. 17A in Olmi 1991) A. austini Olmi
Anteon zhangae sp. nov. (Fig. 2)
Description. Holotype female. Fully winged. Length 4.18 mm. Head black, except mandibles testaceous and clypeus ferruginous; antennae testaceous; mesosoma black, except distal apex of propodeum reddish; petiole black; gaster ferruginous; legs testaceous. Antennae clavate; antennal segments in the following proportions: 22:6:9:9:8:9:9:9:8:12. Head dull, completely reticulate rugose; face with 2 lateral longitudinal keels around orbits directed towards antennal toruli; frontal line complete; occipital carina complete; POL = 5; OL = 4; OOL = 5; OPL = 8; TL = 7; greatest breadth of posterior ocelli shorter than OL (3:4). Pronotum dull, almost completely sculptured by strong transverse keels and large and deep punctures similar to areolae; posterior margin smooth, shiny, without sculpture; posterior surface slightly shorter than scutum (18:20). Scutum completely strongly sculptured by large and deep punctures similar to areolae. Notauli incomplete, reaching approximately 0.8 length of scutum. Scutellum and metanotum shiny, smooth, strongly punctate, without sculpture among punctures. Propodeum with a strong transverse keel between dorsal and posterior surface; dorsal surface reticulate rugose; posterior surface with 2 complete longitudinal keels, with median and lateral areas dull and reticulate rugose. Forewing hyaline, totally weakly yellowish, without dark transverse bands; distal part of stigmal vein much shorter than proximal part (6:18). Fore tarsal segments in the following proportions: 11:3:6:17:33. Fore tarsal segment 2 produced into a hook. Enlarged claw (Fig. 2) with a proximal prominence bearing a long bristle. Segment 5 of fore tarsus (Fig. 2) with basal part much shorter than distal part (8:25), with inner margin almost straight, with 3 rows of 9 very long lamellae + 4 proximal lamellae + 27 lamellae; distal apex with a group of 4 lamellae. Tibial spurs 1, 1, 2.
Male. Unknown.
Hosts. Unknown.
Holotype: Female, P. R. CHINA, Guizhou Prov., Mt. Leigongshan Nature Reserve, 1.VI.2005, Zhang Hongying, No. 20059236 (SCAU).
Etymology: The species is named after the collector Miss Zhang Hongying.
Remarks. Anteon zhangae is similar to A. muiri Olmi 1984 (known from Indonesia) because of the following characters: segment 4 of fore tarsus longer than segment 1; posterior surface of propodeum with 2 longitudinal keels; head completely reticulate rugose; forewing without dark transverse bands; body mostly black; segment 5 of fore tarsus with basal part much shorter than distal part. The above species can be recognized as follows:
1 Scutum weakly punctate, without sculpture among punctures; head with OOL more than twice as long as OL; notauli reaching about 0.65 length of scutum A. muiri Olmi
— Scutum sculptured by large and deep punctures similar to areolae; head with OOL slightly longer than OL; notauli reaching about 0.8 length of scutum A. zhangae sp. nov.
ACKNOWLEDGMENTS
We are grateful to Dr. Liu Jingxian, Dr. Shi Min, and Dr. Zhang Hongying for help in collecting dryinids in the field. This study was supported by the Ministry of Science and Technology of P. R. China (MOST grant N. 2006FY110500).
