Research Article |
Corresponding author: Cornelis van Achterberg ( kees@vanachterberg.org ) Academic editor: Michael S. Engel
© 2015 Jiang-Li Tan, Xu-Lei Fan, Cornelis van Achterberg, Tao Li.
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 JL, Fan XL, Achterberg C van, Li T (2015) A new species of Pseudomegischus van Achterberg from China, with a key to the species (Hymenoptera, Stephanidae). ZooKeys 537: 103-110. https://doi.org/10.3897/zookeys.537.6592
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The genus Pseudomegischus van Achterberg, 2002, is newly reported from China. A new species, P. notiochinensis sp. n., is described and illustrated from southern China. A key to the species of Pseudomegischus is included.
Pseudomegischus , new species, new record, southern China, Jiangxi, key
The small genus Pseudomegischus van Achterberg, 2002 (Hymenoptera: Stephanidae) has an Indo-Australian distribution and contains four described species. The species were revised by
The specimens studied of Pseudomegischus spp. belong to the collection of the Insect Museum of the General Station of Forest Pest Management, Shenyang (GSFPM), P.R. China, some paratypes are deposited in the insect collection of the
The morphological terminology follows
Pseudomegischus van Achterberg, 2002: 169;
Temple with pale yellowish streak (Fig.
Pseudomegischus notiochinensis Tan & van Achterberg, sp. n., female, holotype. 4 wings 5 mesosoma lateral 6 mesosoma dorsal 7 hind leg lateral 8 hind coxa dorsal 9 hind tibia inner side 10 head dorsal 11 head anterior 12 first metasomal tergite dorsal 13 apical metasomal segments, showing pygidial process.
Indo-Australian.
Presumably ectoparasitoid of Cerambycidae and/or Siricidae.
1 | Hind basitarsus ivory or pale yellowish or light brown, distinctly contrasting with dark brown middle of hind tibia (fig. 603 in |
2 |
– | Hind basitarsus yellowish-brown to dark reddish-brown, less contrasting with blackish middle of hind tibia (Fig. |
3 |
2 | First submarginal cell of fore wing ends near level of apex of pterostigma; head infuscate dorsally; pale yellowish streak behind eye distinct (fig. 607 in |
P. rugipleurae (Elliott, 1928) |
– | First submarginal cell of fore wing ends distinctly beyond level of apex of pterostigma (fig. 604 in |
P. insidiator (Smith, 1863) |
3 | Vein 1-M of fore wing 4.8–5.4 × as long as vein 1-SR (fig. 261 in |
P. sulcifrons (Schletterer, 1889) |
– | Vein 1-M of fore wing about 3 × as long as vein 1-SR (Fig. |
4 |
4 | Head pale yellowish brown and without distinctly differentiated ivory streak of temple but dorsally and anteriorly darkened (figs 252–253 in |
P. celebensis van Achterberg, 2002 |
– | Head dark brown except for distinct ivory streak of temple (Fig. |
P. notiochinensis sp. n. |
Holotype, ♀ (GSFPM): “China: Jiangxi, Quannan, 8.v.2009, Shichang Li, [reared from branches of] Castanopsis kawakamii Hay.”. Paratypes: 3♀8♂ (NWUX,
Head in dorsal view parallel-sided behind eyes (Fig.
The new species runs to P. celebensis van Achterberg in the key in
Holotype, female, length of body 16.7 mm, and of fore wing 8.9 mm.
Head. Antenna with 39 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 (Figs
Wings. Fore wing (Fig.
Legs. Hind coxa robust, without tubercle dorsally and with strong and sparse rugae (Figs
Metasoma. First tergite 6.0 × 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; ovipositor sheath blackish apically (Fig.
Male. Similar to female, but in most cases much smaller (Figs
Variation. Length of body of ♀ 15–19 mm, of ♂ 8–16 mm; length of fore wing of ♀ 8–11 mm, of ♂ 5–9 mm; antenna of ♀ with 38(1), 39(1), 42(1) or 47(1) segments, of ♂ with 28(2), 29(1), 31(1), 32(2) and 36(2) segments; first metasomal tergite entirely transversely striate or rugose to largely smooth and only basally rugose; hind basitarsus dark brown as hind tibia or brown and paler than hind tibia; length of ovipositor sheath 2.3–2.5 × fore wing.
Oriental: China (Jiangxi).
Reared from stems of Castanopsis kawakamii Hay. and C. faberi Hance infested by Cerambycidae and Siricidae.
Named after the area of origin, “notios” being Greek for “southern”.
Thanks are due to Mao-ling Sheng (GSFPM) for much appreciated loan of the type series and additional material. The research was supported by the Foundation for Key University Teachers by the Ministry of Education (No. 2011697505), the National Natural Science Foundation of China (NSFC, No. 31201732, 31572300), 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.