Research Article |
Corresponding author: Jiang-Li Tan ( tanjiangli@sina.com ) Academic editor: Matthew Yoder
© 2015 Qing-Qing Tan, Cornelis van Achterberg, Jiang-Li Tan, Xue-xin Chen.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Tan Q-Q, Achterberg C van, Tan J-L, Chen X-X (2015) A new species of Schlettererius Ashmead from China, with a key to the species (Hymenoptera, Stephanidae). Journal of Hymenoptera Research 45: 75-86. https://doi.org/10.3897/JHR.45.5069
|
A new species of Schlettererius Ashmead, 1900, S. chundanae sp. n., is described and illustrated from China. The other East Palaearctic species, S. determinatorius Madl, 1991, is redescribed and illustrated, the first host record is given and it is newly reported from China. A key to the species of the genus Schlettererius is included.
Hymenoptera , Stephanidae , Schlettererius , new species, new record, China, key
The small genus Schlettererius Ashmead, 1900 (Hymenoptera: Stephanidae) is Holarctic and contains two described species. The species were revised by
The studied specimens of the genus Schlettererius Ashmead belong to the collection of the Northwest University at Xi’an (NWUX), the Insect Museum, General Station of Forest Pest Management, Shenyang (GSFPM), the Parasitic Hymenoptera Collection of Zhejiang University at Hangzhou (ZJUH), the Naturalis Biodiversity Center at Leiden (RMNH) and the Hungarian Natural History Museum at Budapest (HNHM). The holotype of the new species is deposited in the collection of the College of Life Sciences, Northwest University at Xi’an.
The morphological terminology follows
Schlettererius Ashmead, 1900: 150;
Posterior part of pronotum more or less angled with remainder of pronotum (Figs
Schlettererius chundanae sp. n., female, holotype. 12 wings 13 mesosoma lateral 14 mesosoma dorsal 15 first metasomal tergite dorsal 16 hind leg lateral 17 first tergite lateral 18 hind coxa dorsal 19 head dorsal 20 head anterior 21 head lateral; 22 apex of ovipositor sheath; 23 detail of hind coxa lateral.
Schlettererius determinatoris Madl, female, holotype. 25 wings 26 mesosoma lateral 27 mesosoma dorsal 28 first metasomal tergite dorsal 29 hind leg lateral 30 first tergite lateral 31 head dorsal 32 head anterior 33 head lateral; 34 apex of ovipositor sheath; 35 detail of hind coxa lateral.
Nearctic, East Palaearctic and Australian (only Tasmania: introduced for biological control of introduced Siricidae).
1 | Posterior part of pronotum steeply elevated above anterior part of pronotum (Fig. |
S. cinctipes (Cresson, 1880) |
– | Posterior part of pronotum moderately elevated above anterior part of pronotum (Figs |
2 |
2 | Length of first metasomal tergite about twice (♀) its maximum width (Fig. |
S. determinatoris Madl, 1991 |
– | Length of first tergite 3.8-4.6 times (♀♂) its maximum width (Fig. |
S. chundanae sp. n. |
Schlettererius determinatori(u)s;
Holotype, ♀ (NWUX): “NW. China: Shaanxi, Guanghuojie, Qinling Mts, c. 1000 m, 27.vi.2013, Jiangli Tan, NWUX”. Paratype: 1 ♂ (ZJUH): “[China:] Shaanxi, Liuba, Mt. Zibai, 1632 m, 4.viii.2004, Zhang Hong-ying, No. 20047080”.
Head in dorsal view parallel-sided behind eyes (Fig.
Holotype, female, length of body 12.4 mm, and of fore wing 9.2 mm.
Head. Antenna with 30 segments; frons coarsely obliquely rugose; three anterior coronal teeth large and acute, both posterior ones arcuate and lamelliform, with two small lobe-shaped carinae on each side in front of both posterior ocelli; behind level of coronal area having four curved, progressively smaller carinae followed by rugose area, rugae rather coarse, posteriorly narrowly reaching occipital carina and widely smooth laterally; temple non-angulate (Fig.
Mesosoma. Neck short and robust, transversely rugose, neck at much lower level than middle part of pronotum (Fig.
Wings. Fore wing (Fig.
Legs. Hind coxa robust, without tubercle dorsally and with strong and sparse rugae (Figs
Metasoma. First tergite 3.8 times as long as its maximum width (Fig.
Colour. Black or blackish brown; tegula and palpi dark brown; scapus, pedicellus, malar space, mandible and patch near basal quarter of hind tibia partly brown; base of femora and of fore and middle tibiae and tarsi pale yellowish brown; remainder of fore and middle tibiae brown; veins and pterostigma largely dark brown, but base of pterostigma ivory; wing membrane slightly brownish but fore wing darkened near vein r and below parastigma; subapical ivory band of ovipositor sheath 1.9 times as long as apical blackish part (Fig.
Male. See
Palaearctic: China (Shaanxi).
Named after Ms Chundan Hong (Guangzhou), who revised the Chinese species of the Stephanidae.
Stephanus cinctipes Cresson, 1880: xviii.
Schlettererius cinctipes;
Posterior part of pronotum steeply elevated above its anterior part (Fig.
Nearctic. Introduced in the Australian region (Tasmania).
Schlettererius determinatoris Madl, 1991: 119–120; Belokobylskij 1995: 18;
Schlettererius determinatorius;
Holotype, ♀ (HNHM), “Korea, Prov. North Pyongan, Mt. Myohyang-san”, “17.07.1982, No.815, leg. Dr. L. Forró & Dr. L. Ronkay”, “Holotypus ♀ Schlettererius determinatoris n. sp. Madl, 1990”, “OSUC 21616”.
2 ♂ (GSFPM), “China: Liaoning, Kuandian Dandong, 21.v.2009, ex Chrysobothris succedana (Saunders) (Buprestidae) in Larix sp., Xiao-yi Wang”.
Head in dorsal view slightly widened behind eyes (Fig.
Holotype, female, length of body 15.0 mm, and of fore wing 9.9 mm.
Head. Antenna with 29 (right) or 30 (left) segments; frons (Fig.
Mesosoma. Neck (Figs
Wings. Fore wing (Fig.
Legs. Hind coxa stout, largely smooth, with some short striae and with a small (in lateral view acute) subapical dorsal tooth (Figs
Metasoma. First tergite stout, sub-cylindrical, 2.1 times as long as its maximum width and about 2.4 times as long as its apical width (Fig.
Colour. Dark brown; head, scapus, pedicellus, fore leg (but tibia ivory basally), middle and hind tarsi and propleuron brown; malar space pale brown; wing membrane (but basally and area below base of pterostigma subhyaline) infuscate; all tibiae ivory basal band; subapical ivory band of ovipositor sheath of female about 1.7 times as long as apical blackish part (Fig.
Male. Very similar to female, length of fore wing 10.0-10.2 mm, and of body 16-17 mm; both with 29 antennal segments and first tergite 2.4-2.5 times its apical width.
Palaearctic: Korea, China (new record).
Chrysobothris succedana (Saunders) (Buprestidae) in Larix sp.
Thanks are due to Zoltán Vas and Dávid Rédei (HNHM) for their much appreciated assistance with the loan of the holotype of S. determinatoris (Madl), and to Mao-ling Sheng and Tao Li (GSFPM) for the loan of the males of S. determinatoris. The research was supported jointly by the Foundation for Key University Teachers by the Ministry of Education (No. 2011697505), the National Natural Science Foundation of China (NSFC, No. 31201732), the foundation of Shaanxi Educational Committee (No. 11JK0614), the Research Fund for the Doctoral Program of Higher Education of China (No. 20116101120001), the National Science Foundation for Fostering Talents in Basic Research of NSFC (No. J12100063) and the Opening Foundation of Key Laboratory of Resource Biology and Biotechnology in western China (Northwest University), Ministry of Education.