Research Article |
Corresponding author: Zai-fu Xu ( xuzaifu@scau.edu.cn ) Academic editor: Michael Ohl
© 2017 Adalgisa Guglielmino, Massimo Olmi, Alessandro Marletta, Zai-fu Xu.
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:
Guglielmino A, Olmi M, Marletta A, Xu Z-f (2017) Description of Aphelopus fuscoflavus, a new species of Dryinidae from Thailand (Hymenoptera, Chrysidoidea). Journal of Hymenoptera Research 57: 115-121. https://doi.org/10.3897/jhr.57.12462
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A new species of Aphelopus Dalman is described from Thailand, Sakon Nakhon: A. fuscoflavus sp. n. Morphologically the new species is similar to A. zonalis Xu, Olmi & He, 2013, known from China, Hainan, but it is clearly different in having the basivolsella fused with the paramere, while the basivolsella is not fused with the paramere in A. zonalis. Published identification keys to the Oriental species of Aphelopus are modified to include the new species.
Aphelopinae , Aphelopus , new species, Oriental region, key, Thailand
Dryinidae (Hymenoptera, Chrysidoidea) are parasitoids of leafhoppers, planthoppers and treehoppers (Hemiptera, Auchenorrhyncha) (
Aphelopus species are parasitoids of leafhoppers belonging to Typhlocybinae (Cicadellidae) (
In 2016 we examined additional specimens of Aphelopus from Thailand and discovered a new species described in this paper.
The descriptions follow the terminology used by
The term “metapectal-propodeal complex” is here used in the sense of
The types of all Oriental species of Aphelopus have been previously examined by the authors.
The type specimen described in this paper is deposited in the collection of the Queen Sirikit Botanic Garden, Chiang Mai, Thailand (
Aphelopus
Dalman, 1823: 8. Type species: Dryinus atratus Dalman, 1823, by subsequent designation of
Female: Fully winged; epistomal suture not touching antennal toruli; occipital carina complete; antenna without ADO’s; palpal formula 5/2; forewing with costal cell enclosed by pigmented veins, with pterostigma; stigmal vein long and regularly curved; course of forewing veins not marked by dark stripes; hind wing hyaline, with costal cell, without dark medial longitudinal stripe; protarsus not chelate; tibial spurs 1/1/2. Male: fully winged; epistomal suture not touching antennal toruli; occipital carina complete; palpal formula 5/2; forewing with costal cell enclosed by pigmented veins, with pterostigma; stigmal vein long and regularly curved; course of forewing veins not marked by dark stripes; hind wing hyaline, with costal cell, without dark medial longitudinal stripe; basivolsella situated completely below distivolsella apex; tibial spurs 1/1/2.
Male with antenna filiform; head testaceous, except large brown spot on vertex; mesosoma testaceous, except area of scutum between notauli darkened, scutellum and metanotum brown, metapectal-propodeal complex black; notauli complete, posteriorly separated; basivolsella with one subdistal bristle, fused with paramere.
Male. Fully winged (Fig.
Female. Unknown.
Holotype: male, Thailand, Sakon Nakhon Province, Phu Phan National Park, Nam Hom Waterfall, Sao Hi, 17°07.340'N 104°20.788'E, 344 m, 25–31.III.2007,Malaise trap, T2377, Sailom Tonqboonchai leg. (
Unknown.
The name fuscoflavus derives from the Latin adjectives “fuscus” (dark) and “flavus” (yellow), because of the partly testaceous and partly brown colour.
Because of the head testaceous, except large brown spot on vertex, the mesosoma partly testaceous and partly brown, the complete notauli, the basivolsella with one subdistal bristle, the new species is similar to Aphelopus zonalis Xu, Olmi & He, 2013, described from China, Hainan. The main difference between A. fuscoflavusand A. zonalis is centered on the structure of the basivolsella; fused with the paramere (Fig.
1 | Mesosoma and metasoma totally testaceous, except petiole black | A. borneanus Olmi |
– | Mesosoma and metasoma partly or totally black or brown | 2 |
2 | Head testaceous, at most with ocellar region, or vertex, or part of face darkened | 3 |
– | Head mostly or totally black or brown | 8 |
3 | Notauli absent | A. maculiceps Bergman |
– | Notauli distinct | 4 |
4 | Basivolsella with one subdistal bristle (Figs |
4’ |
– | Basivolsella with two subdistal bristles | 5 |
5 | Basivolsella not fused with paramere (Fig. |
A. zonalis Xu, Olmi & He |
– | Basivolsella fused with paramere (Fig. |
A. fuscoflavus sp. n. |
In comparison with the 193 species recorded in China by
However, the dryinids of Thailand will be better understood in the future. In fact, during the three year period 2006–2009, an intensive survey of the terrestrial arthropod fauna of Thailand was conducted by the Queen Sirikit Botanic Garden, The Thai Forestry Group, The Hymenoptera Institute and The Natural History Museum of Los Angeles County (TIGER: Thailand Inventory Group for Entomological Research, coordinated by Michael Sharkey) (http://sharkeylab.org/tiger/). This survey resulted in the collection of about 5000 specimens of Dryinidae, which are actually in study in the authors’ laboratories. The new species described herein is one of the first results of this study.
Many thanks to Dr. Michael Sharkey (Department of Entomology, University of Kentucky, Lexington, Kentucky, USA) for sending the specimen of Aphelopus described in the present paper. We are also grateful to all curators of collections who have sent us type material on loan. We are very indebted to Michael Ohl and Denis Brothers for their useful comments and suggestions to improve the manuscript. This paper was supported by the National Natural Science Foundation of China (No. 31472027).