Dineutus serrulatus
| 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 serrulatus LeConte, 1868 – Wikispecies link – Pensoft Profile
Differential diagnosis
Overall this species can be diagnosed in having elytral apices that are serrulate and with apicolateral sinuation present in both sexes, red colored venters, males with a profemoral sub-apicoventral tooth, and in the form of the male aedeagus. A key to the subspecies is provided and each subspecies is treated individually.
Distribution and subspecies
This species is wide-ranging, highly variable among populations (Fig. 39), and has been divided into two subspecies: Dineutus serrulatus serrulatus and Dineutus serrulatus analis (Wood 1968[1]). Of these subspecies Dineutus serrulatus serrulatus is more consistent in its characters, while those of Dineutus serrulatus analis are much more variable causing difficulties in separating the two. Dineutus serrulatus analis was originally described as a separate species by Régimbart in 1882, but was relegated to a subspecies of Dineutus serrulatus LeConte by Wood (1968)[1]. Recent papers have again treated Dineutes analis as a separate valid species (e.g. Ciegler et al 2003[2]; Realzola et al. 2007[3]). For this study the authors found no single discrete character that could reliably separate the taxa. Although dorsal coloration can usually be used to separate the two subspecies, populations from northern Florida where the two subspecies meet, show intermediate dorsal coloration, being medially polished black, but laterally bronzy green. Furthermore the aedeagi, of the two subspecies are very similar, with only minor differences that appear variable across the entire range of this species. Another useful character for delimiting similar species, the mesotarsal claws, are also similar showing only minor variation. For these reasons we continue to follow Wood (1968)[1] in treating these two taxa as subspecies.
Key to the subspecies of Dineutus serrulatus
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 1.2 Wood F (1968) The taxonomic status of Dineutus serrulatus and Dineutus analis in North America (Gyrinidae: Coleoptera). Proceedings of the United States National Museum 124: 1–9. doi: 10.5479/si.00963801.124-3646.1
- ↑ Ciegler J, Morse J, Wheeler A, Activities C (2003) Water beetles of South Carolina: (Coleoptera: Gyrinidae, Haliplidae, Noteridae, Dytiscidae, Hydrophilidae, Hydraenidae, Scirtidae, Elmidae, Dryopidae, Limnichidae, Heteroceridae, Psephenidae, Ptilodactylidae, and Chelonariidae). Clemson University Public Service Pub., 210 pp.
- ↑ Realzola E, Cook J, Cook T, Clopton R (2007) Composition of gyrinid aggregations in the East Texas Primitive Big Thicket (Coleoptera: Gyrinidae). The Coleopterists Bulletin 61: 495–502. doi: 10.1649/0010-065X(2007)61[495:COGAIT]2.0.CO;2
