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| [upper] Indocnemis marijanmatoki Phan, 2018 [lower] Indocnemis orang (Förster in Laidlaw, 1907) |
Abstract
Indocnemis marijanmatoki sp. n. (holotype ♂, 1503 m a.s.l., Hon Ba Nature Reserve, Nha Trang city, Khanh Hoa Province, central Vietnam) is described based on both sexes. The morphological variation of Indocnemis orang (Förster in Laidlaw, 1907) is discussed and its distribution in Vietnam updated.
Keywords: Indocnemis, new species, Odonata, Platycnemididae, Vietnam
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| Figures 7–10. Indocnemis spp. 7 Indocnemis marijanmatoki sp. n., ♂ from Kon Ka Kinh National Park, photographed by Mr To Van Quang 8 I. orang ♂ in nature, Nam Giang, Quang Nam 9, 10 Habitus and appendages of I. orang ♂, Cuc Phuong National Park, photographed by the author. |
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| Figures 11–12. Habitus of Indocnemis marijanmatoki sp. n. 11 Holotype male 12 Paratype female. Figures 13–20. Indocnemis spp. ♂. 13–16 Indocnemis marijanmatoki sp. n., holotype ♂ and 17–20 I. orang (km19, Hon Ba Nature Reserve) 13, 17 appendages, dorsal view 14, 18 right cerci, oblique-dorsal view 15, 19 appendages, lateral view 16, 20 genital ligula, dorsal view. |
Indocnemis marijanmatoki sp. n.
Diagnosis: The new species differs from I. orang with a combination of the following characters: in the male, the marking on dorsum of synthorax is small, shield-shaped; S9–10 entirely black; cerci short, of the length as S10, without a robust basal spine; paraproct entirely black. In the female, the posterior pronotal lobe of the prothorax is rather small, semicircular-shaped.
Etymology: Marijanmatoki, a noun in the genitive case, after Marijan Matok (born 28 March 1972) of Ulm-Söflingen, Germany, in appreciation of his support of the author’s odonatological research in Vietnam through the International Dragonfly Fund.
Habitat and ecology: At the type locality, the new species was found at a narrow (2–3 m wide), shallow stream with sandy bottom. Specimens were collected in April, which otherwise is early for other dragonflies and damselflies, so only Anotogaster sp. was found at the same stream. At the two localities where the new species was found, I. marijanmatoki sp. n. and I. orang occur at quite different elevations. The new species occurs at very high elevations, from 1,400–1,500 m a.s.l., while I. orang is usually found in the areas ranging from 300–600 m a.s.l.
Quoc Toan Phan. 2018. On the Genus Indocnemis Laidlaw, 1917 in Vietnam with Description of Indocnemis marijanmatoki sp. n. (Odonata, Zygoptera, Platycnemididae). ZooKeys. 809: 15-29. DOI: 10.3897/zookeys.809.29058
