Dineutus longimanus cubensis
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Ordo: Coleoptera
Familia: Gyrinidae
Genus: Dineutus
Name
Dineutus longimanus Ochs, 1927 – Wikispecies link – Pensoft Profile
- Dineutus (Dineutus) longimanus cubensis Ochs 1927a[1]: 192, Dineutus (Rhombodineutus) longimanus: Guignot 1950[2]: 127, Dineutus (Cyclinus) longimanus: Brinck 1955[3]: 106, Dineutus longimanus cubensis: Peck et al. 1998[4]: 158.
Type locality
Cuba, Santiago de Cuba.
Specimens examined
17
Type material examined
None examined.
Material examined
CUBA: Holguín: Sierra de Nipe, 25km S Mayari, Pinares de Mayari, 650 m, 03.vii.1990, leg. M.A. Ivie (7 ex. WIBF); Sierra de Nipe, Rio Piloto, 4.ii.1967, leg. R. Bielawski & A. Riedel (1 ex. WIBF) same as previous except: 590 m, 07.vii.1990, leg. M.A. Ivie (7 ex. WIBF); Pinar del Rio: Sierra del Rosario, Rancho Mundito, 16.vi.1959, leg. M.W. Sanderson, C59-29 (1 ex. FSCA); Sierra del Rosario, ca. 15km S CincoPesos Rangel, 420 m, 29.vi.1990, leg. M.A. Ivie, (1 ex. WIBF).
Diagnosis
Male (Fig. 20C–D). Size: 11.4–12.9 mm. Body form regularly elongate oval; elytral apices spinose, with sutural angle produce to a spine, and a second parasutural spine, with thorn-like serrations and irregularities present apically and apicolaterally, apicolateral sinuation mostly absent, elytra with reticulation strong laterally and apically, producing a bronzy appearance, medial disc with reticulation more weakly impressed and composed of smaller cells accompanied by very shallowly impressed punctation, striae mostly effaced by reticulation, if evident at all faintly apparent medially on disc, lateral marginal depression of elytra absent; profemora with very small sub-apicoventral tooth; protibiae club-shaped; mesotarsal claws (Fig. 21C) with ventral margin regularly rounded and evenly narrowed apically; metacoxae with numerous shallow punctures present over most their ventral face; venter lighter in color: reddish brown to reddish orange. Aedeagus (Fig. 21A, B, D) with median lobe in dorsal view shorter than parameres, nearly parallel sided, slightly wider basally and shallowly narrowed apicad, in apical 1/4 shallowly narrowed towards apex, apex regularly rounded, dorsally without narrow carina, ventrally sperm-groove narrow and parallel sided for most its length, apically briefly widened, in lateral view median lobe with dorsal margin shallowly sinuate in apical 1/3, apex broadly rounded; parameres in dorsal view with lateral margins not laterally expanded, parallel sided for most their length, and apically narrowly rounded.
Female (Fig. 20A–B). Size: 10.8–12.4 mm. Body form regularly elongate oval; elytral apices spinose, with sutural angle produce to a spine, and a second parasutural spine, with thorn-like serrations and irregularities present apically and apicolaterally, apicolateral sinuation mostly absent, elytra with reticulation strong laterally and apically, producing a bronzy appearance, medial disc with reticulation more weakly impressed and composed of smaller cells accompanied by very shallowly impressed punctation, striae mostly effaced by reticulation, if evident at all located medially on disc, lateral marginal depression of elytra absent; profemora without sub-apicoventral tooth; protibiae club-shaped; metacoxae with numerous shallow punctures present over most their ventral face; venter lighter in color: reddish brown to reddish orange.
Differential diagnosis
Dineutus longimanus cubensis is unique among the other subspecies of Dineutus longimanus in being smaller in size (10.8–12.9 mm) and having the metacoxae with numerous shallow punctures present and covering most of their surface. The subspecies most similar to Dineutus longimanus cubensis is Dineutus longimanus jamaicensis and can primarily be distinguished by the differences in dorsal punctation and the punctures of the metacoxae as provided by the indentification key.
Distribution
(Fig. 55B). Cuba (Leng and Mutchler 1914a[5]; Ochs 1924[6], 1926)
Habitat
Lotic, according to Peck et al. (1998)[4] this subspecies occurs in streams through out Cuba and is an accidental cave inhabitant. Cave records for this species include Cueva Jíbara 8, Santiago de Cuba Province and Cueva Caja de Aqua, Saneti Spiritus Province (Peck et al. 1998[4]).
Discussion
Information on the subspecies aside from its taxonomy has been scarce. Given what is currently known it appears that Dineutus longimanus cubensis is only known from Cuba.
It is worth noting that the date of the description of Dineutus longimanus cubensis is often given as 1926 (Ochs 1929[7], 1938[8]) as the name was used earlier by Ochs (1926-1927). However, according to Article 12.1 of The Code (ICZN 1999[9]) in order for the nomen to be available it must be accompanied by a description or definition and in 1926 the name was simply used with an asterix making it a nomen nudum at that time. The description of Dineutus longimanus cubensis was not included until the final part of the work published in 1927 on page 192 (Ochs 1927a[1]). Thus the true date for Dineutus longimanus cubensis must be 1927 as that is when the nomen satisfied the criteria of The Code for availability.
Taxon Treatment
- Gustafson, G; Miller, K; 2015: The New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini) ZooKeys, (476): 1-135. doi
Images
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Other References
- ↑ 1.0 1.1 Ochs G (1927a) Die Dineutini. 2. Tribus der Unterfamilien Enhydrinae Fam. Gyrinidae (Col). A. Aligemeiner Teil. Entomologische Zeitschrift 40: 190–197.
- ↑ Guignot F (1950) Sur la systematique des Dineutus (Col. Gyrinidae). Bulletin Mensuel de la Société Linnéenne de Lyon 19: 124–127.
- ↑ Brinck P (1955) A revision of the Gyrinidae (Coleoptera) of the Ethiopian region. I. Acta Universitatis Lundensis Nova Series 51: 1–144.
- ↑ 4.0 4.1 4.2 Peck S, Ruiz-Baliú A, Garcés González G (1998) The cave-inhabiting beetles of Cuba (Insecta: Coleoptera): diversity, distribution, and ecology. Journal of Cave and Karst Studies 60: 156–166.
- ↑ Leng C, Mutchler A (1914a) Article V. - Suppliment to preliminary list of the Coleoptera of the West Indies. Bulletin of the American Museum of Natural History 37: 191–220.
- ↑ Ochs G (1924) On the West Indian Gyrinidae and a new species of Gyretes from northern Brazil. American Museum Novitates 125: 1–8.
- ↑ Ochs G (1929) VII. Notes upon some Gyrinidae in the Carnegie Museum with descriptions of new species. Annals of the Carnegie Museum 19: 123–134.
- ↑ Ochs G (1938) Additional remarks on West Indian Gyrinidae. Psyche 45: 85–93. doi: 10.1155/1938/37837
- ↑ ICZN (1999) International Code of Zoological Nomenclature, Fourth Edition, adopted by the International Union of Biological Sciences. International Trust for Zoological Nomenclature, London, xxix + 306 pp.
