Dineutus longimanus longimanus
| Notice: | This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale):
Citation formats to copy and paste
BibTeX: @article{Gustafson2015ZooKeys, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Gustafson2015ZooKeys">{{Citation See also the citation download page at the journal. |
Ordo: Coleoptera
Familia: Gyrinidae
Genus: Dineutus
Name
Dineutus longimanus (Olivier, 1795) – Wikispecies link – Pensoft Profile
- Gyrinus longimanus Olivier 1795[1]: 701, Gyrinus excisus Forsberg 1821[2]: 301 [synonymy by Aubé 1838[3]], Dineutes longimanus: Aubé 1838[3]a: 408, Dineutus longimanus: Ochs 1924[4]: 5. Dineutus (Cyclinus) longimanus: Hatch 1925b[5]: 488, Dineutus (Dineutus) longimanus: Ochs 1926a[6]: 138, Dineutus longimanus: Blackwelder 1944[7]: 81, Dineutus (Rhombodineutus) longimanus: Guignot 1950[8]: 127, Dineutus (Cyclinus) longimanus: Brinck 1955[9]: 106.
Type locality
Saint-Domingue (= Hispaniola).
Specimens examined
25
Type material examined
Gyrinus longimanus Olivier, 1795: lectotype, here designated: (♂ pinned) “MUSEUM PARIS/ I. St. Domingue/ COLL. BOSC 1828 [beige label, typed black ink, except I. St. Domingue handwritten in black ink, handwriting unknown]// Gyrinus longimanus/ I. St. Domingue Oliv. [beige label with black border, handwritten in black ink, handwriting appears to be Olivier’s]// TYPE [red label, typed black ink]// LECTOTYPUS/ P. Brinck designavit 1955. [white label, typed black ink]// TYPE [red label, typed black ink]// LECTOTYPE [red label, typed black ink]//” deposited in the MNHN.
Material examined
DOMINICAN REPUBLIC: Pedernales Prov.: W of Pedernales, on rd to border with Haiti, 18.154° ‘-71.582°, 13.v.2010, leg. G.J. Svenson, sweeping in dry for. & sec. veg. (17 ex. MSBA); N of Pedernales, La Aguita, 18°09.172'N, 71°44.786'W, 188 m, 21.vii.1999, leg. M.A. Ivie, Guerrero, & Dominici (5 ex. WIBF); 1 km N of Banano, Rio Mulitos, 18°09.258'N, 71°45.384'W, 290 m, 17.vi.2005, leg. G. Nearns, (2 ex. FSCA).
Diagnosis
Male (Fig. 24C–D). Size: 12.3–13.9 mm. Body form regularly elongate oval, elytra laterally slightly broadened after basal half; elytral apices spinose, with sutural angle produce to a spine, and a second parasutural spine, with small thorn-like serrations and irregularities present apically but greatly reduced apicolaterally, apicolateral sinuation present and shallow, elytra with reticulation strong laterally and apically, producing a bronzy appearance, medial disc with reticulation more weakly impressed and composed of smaller transversely ovoid cells accompanied by shallowly impressed punctation, striae mostly effaced by reticulation, if evident at all faintly apparent medially on disc, lateral marginal depression of elytra shallow; profemora with very small sub-apicoventral tooth; protibiae club-shaped; mesotarsal claws (Fig. 25C) with ventral margin with a well developed denticle; metacoxae with a sparse covering of very shallow punctures over most their ventral face, laterally only present on posterior margin; venter lightly colored: reddish orange to orangey yellow. Aedeagus (Fig. 25A, B, D) with median lobe in dorsal view shorter than parameres, nearly parallel sided, broader basally and weakly narrowed apicad, in apical 1/4 shallowly narrowed towards apex, apex regularly rounded, dorsally without narrow carina, ventrally sperm-groove narrow and parallel sided, in lateral view median lobe with dorsal margin straight, apex angularly rounded; parameres in dorsal view with lateral margins very weakly laterally expanded in apical 1/2, apically broadly rounded.
Female (Fig. 24A–B). Size: 12.3–13.7 mm. Body form regularly elongate oval; elytral apices spinose, with sutural angle produce to a spine, and a second parasutural spine, with small thorn-like serrations and irregularities present apically but greatly reduced apicolaterally, apicolateral sinuation present and shallow, elytra with reticulation strong laterally and apically, producing a bronzy appearance, medial disc with reticulation more weakly impressed and composed of smaller transversely ovoid 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; protibiae club-shaped; profemora without sub-apicoventral tooth; metacoxae with a sparse covering of very shallow punctures over most their ventral face, laterally only present on posterior margin; venter lightly colored: reddish orange to orangey yellow.
Differential diagnosis
Dineutus longimanus longimanus is unique among other subspecies of Dineutus longimanus in being elongate oval and broadened posteriorly in the male after basal half of elytra, and having the metacoxae with sparse but present punctation. The subspecies most similar to Dineutus longimanus longimanus is Dineutus longimanus portoricensis but can be distinguished from Dineutus longimanus portoricensis in being smaller in size (12.3–13.9 mm) and the aedeagus lacking a dorsal carina.
Distribution
(Fig. 55B). Haiti, Dominican Republic, (Leng and Mutchler 1914a[10]; Ochs 1938[11]; Wood 1962[12])
Habitat
Lotic species collected in streams throughout the Dominican Republic (M. Fikáček pers. comm.).
Discussion
Similar to other species not much is known about this species aside from its taxonomy. The extant of range of this and other subspecies of Dineutus longimanus may be obscured due to imprecise identification of subspecies.
Type designation
Olivier (1795)[1] in his original description of Gyrinus longimanus states it is found in St. Domingue and was described from the cabinet of M. Bosc. A single specimen in the MNHN general collection has a label indicating both the aforementioned locality and being from Bosc’s collection, as well as a label in the handwriting of Olivier with the I.D. of Gyrinus longimanus, therefore this specimen (Fig. 51E) is here designated as the lectotype for Dineutus longimanus longimanus.
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
|
Other References
- ↑ 1.0 1.1 Olivier G (1795) Entomologie ou Histoire Naturelle des Insectes ave leurs caractères génériques et spécifiques, leur description, leur synonymie, et leur figure enluminée. Coléoptères. Tome III. Desray, Buadoin (Paris), 522 pp.
- ↑ Forsberg C (1821) De Gyrinis Commentatio. Nova Acta Regiae Societatis Scientiarum Upsaliensis 8: 297–314.
- ↑ 3.0 3.1 Aubé C (1838) Species général des Hydrocanthares et Gyriniens, par le docteur Ch. Aubé; pour faire suite au species général des Coléoptères de la collection de M. Le Comte Dejean. Paris.
- ↑ Ochs G (1924) On the West Indian Gyrinidae and a new species of Gyretes from northern Brazil. American Museum Novitates 125: 1–8.
- ↑ Hatch M (1925b) The phylogeny and phylogenetic tendencies of Gyrinidae. Papers of the Michigan Academy of Science, Arts and Letters V: 429–467.
- ↑ Ochs G (1926a) Die Dineutini. 2. Tribus der Unterfamilien Enhydrinae Fam. Gyrinidae (Col). A. Aligemeiner Teil. Entomologische Zeitschrift 40: 129–140.
- ↑ Blackwelder R (1944) Checklist of the coleopterous insects of Mexico, Central America, the West Indies, and South America. Part 1. Smithsonian Institution, Washington D. C., 1492 pp.
- ↑ 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.
- ↑ 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 (1938) Additional remarks on West Indian Gyrinidae. Psyche 45: 85–93. doi: 10.1155/1938/37837
- ↑ Wood F (1962) A synopsis of the genus Dineutus (Coleoptera: Gyrinidae) in the Western Hemisphere. Masters, University of Missouri, Columbia, Missouri.
