Research Article |
Corresponding author: Tao Li ( litao200105@163.com ) Academic editor: Gavin Broad
© 2015 Tao Li, Ying Zhang, Kees van Achterberg.
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:
Li T, Zhang Y, van Achterberg C (2015) A new species of subgenus Neodoryctes Szépligeti (Hymenoptera, Braconidae) from China, with a key to Oriental and Palaearctic species. Journal of Hymenoptera Research 46: 107-114. https://doi.org/10.3897/JHR.46.5763
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A new species of subgenus Neodoryctes Szépligeti (Hymenoptera: Braconidae), Doryctes (Neodoryctes) henanensis Li & van Achterberg, sp. n., is described and illustrated. This species is associated with Pterolophia sp. (Coleoptera: Cerambycidae), a twig-boring pest of Broussonetia papyrifera (L.) L’Hert. et Vent. (Moraceae), in Henan (Central China). A key to the Palaearctic species of the subgenus Neodoryctes is provided.
Doryctinae , Doryctini , Doryctes , Neodoryctes , new species, parasitoid
The subgenus Neodoryctes Szépligeti, 1914 of the genus Doryctes Haliday, 1836 (Hymenoptera: Braconidae: Doryctinae: Doryctini) includes eight described species, of which six species are known from the Afrotropical Region (
Here we describe the third non-Afrotropical species of Neodoryctes, D. (Neodoryctes) henanensis Li & van Achterberg, sp. n., from Henan (Central China).
Twigs of heavily infested Broussonetia papyrifera (L.) L’Hert. et Vent. trees were collected, brought to the laboratory and maintained in a large nylon cage at room temperature. Distilled water was sprayed over the trunks and twigs twice a week in order to prevent desiccation and the emerged insects were collected daily. After the emergence of hosts and parasitoids was complete, all remaining twigs were dissected to record their condition (i.e. status of hosts, and parasitism). The associated host was identified by Dr. Guang-Lin Xie (Yangtze University, Jingzhou, Hubei, China).
For the morphological terminology used in this paper see
The type specimens and hosts are deposited in the Insect Museum, General Station of Forest Pest Management (GSFPM), State Forestry Administration, Shenyang, China. One paratype is deposited at the
1 | Mesoscutum mainly striate or rugose (Fig. |
2 |
– | Mesoscutum and dorsal face of propodeum smooth or granulate; small dorsal tooth on hind coxa present; posteriorly vein m-cu of hind wing curved distally; second metasomal suture distinctly impressed | 3 |
2 | Apical half of vein M+CU1 of fore wing strongly curved (Fig. |
D. henanensis Li & van Achterberg, sp. n. |
– | Apical half of vein M+CU1 of fore wing slightly curved; vein 1-M of hind wing about 1.3 × as long as vein M+CU; vein 3-SR of fore wing about 1.2 × as long as vein m-cu; medial part of tergite II about 1.2 × wider than long medially; ovipositor sheath 0.60–0.75 × as long as fore wing; propodeum distinctly areolate | D. slavianka Belokobylskij, 1996 |
3 | Mesoscutum and dorsal face of propodeum smooth; setae on dorsal surface of hind tibia long and erect; hind coxa with distinct submedian dorsal tooth; vein SR of hind wing largely absent; apical width of tergite I 1.2–1.4 × its basal width | D. denticoxa Belokobylskij, 1996 |
– | Mesoscutum and dorsal face of propodeum granulate; setae on dorsal surface of hind tibia short and semi-erect; hind coxa with minute and hardly protruding dorsal tooth; basal half of vein SR of hind wing present; apical width of tergite I 1.5–1.8 × its basal width | D. makiharai Belokobylskij & Maetô, 2008 |
Holotype, ♀ (GSFPM), China: Henan, Xinxiang, 3.vi.2013, Mao-Ling Sheng. Paratypes (
Frons weakly concave behind antennal sockets, with 3–4 furrows. POL 1.2 × Od, 0.5 × OOL. Width of face 0.8 × height of eye, 1.2 × height of face and clypeus combined. Apical half of vein M+CU1 of fore wing strongly curved, vein 3-SR of fore wing about 1.6 × as long as vein m-cu and vein 1-M of hind wing 1.5–1.6 × as long as vein M+CU. Tergite II with oblique lateral depressions, medial part of tergite II (between sublateral grooves) distinctly transverse (about twice wider than long medially). Ovipositor sheath 1.3 × as long as metasoma and as long as fore wing.
Holotype. Female, length of body 5.8 mm, and of fore wing 4.8 mm (Fig.
Head (Figs
Neodoryctes henanensis Li & van Achterberg, sp. n., female, holotype, but 6 and 11 of female paratype. 2 Head, front aspect 3 Head, dorsal aspect 4 Basal anternal segments 5 Mesosoma, dorsal aspect 6 Mesosoma, lateral aspect 7 Propodeum, dorsal aspect 8 Hind coxa 9 Hind femur 10 Hind tibia 11 Hind tarsus 12 Wings 13 Metasoma, dorsal aspect.
Mesosoma (Figs
Wings (Fig.
Legs (Figs
Metasoma (Fig.
Colour. Black. Head brown but stemmaticum and apical half of mandible blackish brown, median part of face and scape yellowish brown with some reddish, apical half of antenna rather dark brown; pronotum, mesoscutum, mesopleuron (apically dark brown) and mesosternum reddish brown; tegula, fore leg (but femur and tibia blackish brown), mid leg (but coxa, femur and tibia blackish brown), hind trochanters and base of tibia, yellowish brown; pterostigma (except for yellowish brown base and apex) and veins blackish brown; sublateral striae of tergite II dark reddish brown.
Male. Length of body 4.2 mm, and of fore wing 2.9 mm. Antennal articles 29, antenna 1.1 × longer than body. Length of mesosoma 2.8 × longer than high. Length of tergite I 1.5 × as long as its apical width and apical width 1.7 × its basal width. Length of tergites II+III 1.8 × its basal width, 2.2 × as long as length of tergite IV. Head (but stemmaticum and apical half of mandible blackish brown; basal half of antenna yellow, apical half brown), fore leg, mid leg (but telotarsus and claws blackish brown), hind leg (but coxa and most of femur yellowish brown with some reddish; telotarsus and claws blackish brown), pterostigma and veins yellowish brown; pronotum and mesoscutum yellowish brown with some reddish; propodeum and metasoma reddish brown and partly blackish.
Female paratype has length of body 4.6 mm, and of fore wing 3.7 mm. Head (but stemmaticum and apical half of mandible blackish brown; apical half of antenna brown), legs except claws blackish brown, tegulae, yellowish brown; pterostigma (but basally and apically yellowish brown) and veins brown; pronotum and mesoscutum yellowish brown with some reddish; scutellum, propodeum, hind coxa and metasoma (but tergites II+III yellowish brown with some reddish), dark reddish brown.
Presumably larval parasitoid of Pterolophia sp. (Coleoptera: Cerambycidae) boring in Broussonetia papyrifera (L.) L’Hert. et Vent. (Moraceae).
Palaearctic China (Henan).
The new species belongs to the subgenus Neodoryctes Szépligeti because of the short vein 1-M of the hind wing. It can be separated from other Palaearctic and North Oriental species of this subgenus by having vein 3-SR of fore wing about 1.6 × as long as vein m-cu, apical half of vein M+CU1 of fore wing strongly curved and vein 1-M of hind wing 1.5–1.6 × as long as vein M+CU (vein 3-SR of fore wing about 1.0–1.5 × as long as vein m-cu, apical half of vein M+CU1 of fore wing slightly curved and vein 1-M of hind wing about 1.3–1.4 × as long as vein M+CU in the remaining species). It shares with D. slavianka Belokobylskij, 1996, from Korea and Far East Russia, the lack of a dorsal tooth on the hind coxa and the striate or rugose mesoscutum; however, it differs from the latter species by having the medial part of tergite II (between the sublateral grooves) distinctly transverse (about twice wider than long medially; about 1.2 × in D. slavianka), the ovipositor sheath about as long as fore wing (0.60–0.75 ×), the propodeum weakly areolate (distinctly areolate) and vein M+CU1 of fore wing distinctly curved (nearly straight).
The specific name is derived from the locality of the holotype.
The authors are deeply grateful to Dr. Gavin Broad (Department of Life Science, the Natural History Museum, London, UK) and Dr. Alejandro Zaldívar-Riverón (Universidad Nacional Autónoma de México, Mexico D. F., Mexico) for valuable comments and suggestions. We also thank to Guang-Lin Xie (Yangtze University, Hubei Province, China) for identifying the host. This research was supported by the National Natural Science Foundation of China (NSFC, No. 31070585; NSFC, No. 31310103033).