Corresponding author: Khuat Dang Long (khuatdanglong@gmail.com)
Academic editor: K. van Achterberg
Two new species of the genus
Oanh NT, Long KD, Mai PQ, Dzuong NV (2020) First record of the genus
The biology of
The specimens studied, including holotypes and some paratypes, are housed in the Institute of Ecology & Biological Resources (
For terminology used in this paper, see
We used an Olympus SZ61 binocular microscope together with fluorescent lamps for sorting, identification and descriptions. The key to species and the descriptions of species are based on females. Measurements are taken under an Olympus SZ40 binocular microscope. The scale-lines of the plates (habitus and fore wing) represent 1.0 mm. The photographs were made with a Sony 5000 digital camera attached to a Nikon SMZ 800N binocular microscope connected to a PC at
Abbreviations used in this paper are as follows:
‘
Institutional abbreviations are as follows:
In Vietnam, the distribution of the species is given in order of areas and provinces from north to south, and outside Vietnam, distribution of species follows an alphabetical order.
Holotype, female, body length 6.2 mm, fore wing length 5.7 mm, antenna 7.3 mm, ovipositor sheath 1.5 mm (Fig.
Length of body 5.8–7.7 mm, of fore wing 5.3–6.7 mm; antenna with 57–65 antennomeres; 16–26 middle antennomeres yellow or antenna brown entirely; stemmaticum brownish yellow; vein SR1 of fore wing 4.0–4.9× vein 3-SR; length of ovipositor sheath 0.22–0.25× fore wing; middle coxa and tarsus brownish yellow; middle femur and tibia yellow; ovipositor yellow.
Unknown.
From
N Vietnam: Tuyen Quang, Ninh Binh;
The new species,
7a. | Whole antenna black; face coarsely punctate, at most with some rugae dorsally; second submarginal cell of fore wing comparatively robust (cf. fig. 37 in |
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a’. | Antenna dark brown basally and apically, yellowish medially; face transversely rugose, except triangular area upper clypeus smooth; second submarginal cell of fore wing slender (Fig. |
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Holotype, female, body length 8.3 mm, fore wing length 7.2 mm, antenna 7.7 mm, ovipositor sheath 1.8 mm (Fig.
Length of body 5.4–8.4 mm, of fore wing 4.9–7.1 mm; antennae 65–70 antennomeres; 18–34 middle antennomeres yellow or antennae brown entirely; stemmaticum yellow; vein SR1 of fore wing 4.0–6.2× vein 3-SR; length of ovipositor sheath 0.22–0.3× fore wing; middle tarsus brownish yellow; hind tibial spurs brown.
Unknown.
The name of the species originates from the name of the country, where the holotype was collected.
N Vietnam: Son La, Thai Nguyen, Hoa Binh; S Vietnam: Pleicu.
The new species,
7b. | Surroundings of stemmaticum of female yellowish brown; antenna near its apical 0.4 brown; face transversely rugose; fore wing vein r distinctly longer vein 3-SR (cf. fig. 42 in |
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b’. | Surroundings of stemmaticum of female brownish yellow (Fig. |
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Distribution map of the two newly described species of
The limitations in our paper are that the type specimens of nine species described by
The colour patterns of wasps seem to be one of the characters for distinguishing between
This research was funded by the Vietnam National Foundation for Science and Technology Development (NAFOSTED), grant No. 106-NN.05-2016.08. The authors wish to thank Mr Nguyen Hoang Vu, Indochina Institute of Biological and Environmental Sciences, Ha Noi, Vietnam, for his help in making the distribution map.