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What are Bartenev ’ s ( 1930 ) forgotten Japanese species » Gomphus acutus « and » Gomphus excavatus « ( Odonata : Gomphidae ) ?
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sasamoto, Akihiko Futahashi, Ryo |
| Copyright Year | 2017 |
| Abstract | The true identities of Gomphus acutus Bartenev, 1930 and Gomphus excavatus Bartenev, 1930, two forgotten taxa named from Japan, are discussed. G. acutus is ranked as a junior synonym of Trigomphus melampus (Selys, 1869) (syn. nov.). The earlier proposed synonymy of G. excavatus with Asiagomphus pryeri (Selys, 1883) is confirmed. Further key words. Dragonfly, Anisoptera, new synonymy Introduction Bartenev (1930) described two new gomphid species based on specimens from Japan: Gomphus acutus and G. excavatus. Both names are available and these taxa have been listed as valid species, as Trigomphus acutus and Gomphus excavatus, in the world catalogues of Odonata by Davies & Tobin (1985), Bridges (1994) and Steinmann (1998). Bridges (1994) considered the generic combination of acutus uncertain and listed the species as Trigomphus (?) acutus. Moreover he added a comment »perhaps a nomina oblita« to both species. Tsuda (2000) listed only the former taxon, using the combination Trigomphus acutus, and gave the provenance incorrectly as Russia. G. acutus Bartenev, 1930 still appears as available name in the latest version of the World Odonata List (Schorr & Paulson 2016) but in this list G. excavatus is treated as synonym of Asiagomphus pryeri (Selys, 1883). Despite the fact that these taxa were recorded from Japan, Japanese authors have ignored and never mentioned these species (e.g., Hamada & Inoue 1985; Sugimura et al. 1999; Ozono et al. 2012). In this paper, we discuss their status. What is Gomphus acutus? Bartenev’s (1930) four page German paper titled »Über eine kleine Odona tensammlung aus Japan und Nordchina« included the following description of G. acu tus (the underlines and superscripts are made by us, indicating the part mentioned in the below): »3. Gomphus acutus sp. n., Japan. 1♂ und 2♀. Ähnlich dem G. melampus Sel. ♂. Labium schwarzbraun. Labrum gelb, beinahe die ganze vordere Hälfte desselben schwarz und ebenso das schmale schwarze Streifchen an der Basis. Rhinarium schwarzbraun. Nasus gelb. Die untere Hälfte der Vorderseite der Stirn schwarz. Die |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.odonatologica.com/wp-content/uploads/2017/07/Sasamoto_Futahashi.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
