Tuesday, July 12, 2016

[Entomology • 2015] Revision of the Sundaland Species of the Genus Dysphaea Selys, 1853 (Odonata: Euphaeidae) using Molecular and Morphological methods, with Notes on Allied Species



FIGURES 77–82. Dysphaea males in life: 77) Dbasitincta Hainan (photo by Mo Shanlian) 78) Ddimidiata Sarawak (photo by Graham T. Reels); 79) Ddimidiata Negeri Sembilan (photo by C.Y. Choong); 80) D. ulu Sarawak (photo by Graham T. Reels); 81) D. vanida Ranong (photo by Matti Hämäläinen); 82) D. vanida Surat Thani (photo by André Günther). 

Abstract

The Sundaland species of the genus Dysphaea were studied using molecular and morphological methods. Four species are recognized: D. dimidiata Selys, D. lugens Selys, Dysphaea ulu spec. nov. (holotype ♂, from Borneo, Sarawak, Miri division, Upper Baram, Sungai Pejelai, Ulu Moh, 24 viii 2014; deposited in RMNH) and Dysphaea vanida spec. nov. (holotype ♂, from Thailand, Ranong province, Khlong Nakha, Khlong Bang Man, 12–13 v 1999; deposited in RMNH). The four species are described and illustrated for both sexes, with keys provided. The type specimens of the four Dysphaea taxa named by E. de Selys Longchamps, i.e. dimidiata, limbata, semilimbata and lugens, were studied and their taxonomic status is discussed. Lectotypes are designated for D. dimidiata and D. limbata. D. dimidiata is recorded from Palawan (the Philippines) for the first time. A molecular analysis using three markers (COI, 16S and 28S) is presented. This includes specimens of three Sundaland species of the genus (D. lugens missing) and two congeners from other regions (D. basitincta and D. gloriosa). Notes and photographs of the male holotype of D. walli Fraser (from Maymyo, Burma) are provided.

Keywords: Odonata, Euphaeidae, Dysphaea, new species, Sundaland, COI, 16S, 28S


FIGURES 9–12. Habitus of male Dysphaea:
 9) D. dimidiata West Java; 10) D. lugens Danum Valley, Sabah; 11) D. ulu holotype (flipped horizontally); 12) D. vanida holotype (flipped horizontally). 

Taxonomy 
•  Dysphaea dimidiata Selys, 1853

•  Dysphaea lugens Selys, 1873

•  Dysphaea ulu spec. nov. 

Etymology. The species epithet is based on the word ‘ulu’, the form generally in use in Borneo of the Bahasa Melayu/Indonesia word ‘hulu’, which means upstream. The species epithet is used as a noun in apposition. The species typically inhabits ‘upstream’ habitats. 

Diagnosis. A narrow-winged Dysphaea species with male wings broadly opaque at basal half and at wing tips. Cerci with lower border nearly straight in lateral view. 


•  Dysphaea vanida spec. nov. 

Etymology. The species epithet is based on the common Thai girl name Vanida. In Thai the name means ‘girl’. The name is a noun in apposition and is not named after any particular person. 

Diagnosis. A narrow winged Dysphaea species, males of which have only a small opaque patch at the wing base. Wing tips narrowly darkened.


Hämäläinen, Matti, Rory A. Dow & Frank R. Stokvis. 2015. Revision of the Sundaland Species of the Genus Dysphaea Selys, 1853 using Molecular and Morphological methods, with Notes on Allied Species (Odonata: Euphaeidae). Zootaxa. 3949(4): 451–490.  DOI: 10.11646/zootaxa.3949.4.1


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