Enochrus elongatulus

Taxonavigation

Taxonavigation: Hydrophiloidea
Superregnum: Eukaryota Cladus: Unikonta Cladus: Opisthokonta Cladus: Holozoa Regnum: Animalia Subregnum: Eumetazoa Cladus: Bilateria Cladus: Nephrozoa Cladus: Protostomia Cladus: Ecdysozoa Cladus: Panarthropoda Phylum: Arthropoda Cladus: Pancrustacea Cladus: Allotriocarida Subphylum: Hexapoda Classis: Insecta Cladus: Dicondylia Subclassis: Pterygota Infraclassis: Neoptera Cladus: Eumetabola Cladus: Holometabola Superordo: Coleopterida Ordo: Coleoptera Subordo: Polyphaga Infraordo: Staphyliniformia Superfamilia: Hydrophiloidea

Enochrus elongatulus (MacLeay, 1871)
- Original combination: Philhydrus elongatulus
- Incorrect subsequent spelling: Philhydrus elongatus
- Incorrect subsequent spelling: Enochrus elongulatus: Anderson, 1976
- Incorrect subsequent spelling: Enochrus elongatus

Philhydrus caledonicus Fauvel, 1883
- Combination: Enochrus caledonicus
- Authority for synonymy: Watts, 1998: 144 ('syn. nov.')
?Philhydrus tritus Broun, 1880
- Authority for synonymy: Short (2010: 305, 'The primary differences between Enochrus elongatulus and E. tritus are dorsal coloration and the coarseness of the dorsal ground punctation. Both of these differences are known to be highly variable within species, especially in the genus Enochrus, including other island groups (e.g. Watts 1998). As the aedeagi of the two species are essentially identical, uniformly pale specimens of E. tritus can hardly be distinguished from E. elongatulus. Indeed, it is highly probable that these two species are in fact conspecific. Specimens previously considered E. tritus from the Pacific outside New Zealand (e.g. Cook Islands, Tonga) are more easily accommodated under E. elongatulus. Broun (1880) himself, when describing E. tritus, regarded the paler specimens of E. tritus as a separate species (“Philhydrus variolorum”). I refrain from establishing a formal synonymy here because I have not examined large series of the species from other islands including New Zealand')

Anderson, J.M.E. 1976: Aquatic Hydrophilidae (Coleoptera). The biology of some Australian species with descriptions of immature stages reared in the laboratory. Australian journal of entomology, 15 (2): 219–228. DOI: 10.1111/j.1440-6055.1976.tb01696.x
Fauvel, A. 1883: Les Coléoptères de la Nouvelle-Calédonie et dépendances, avec descriptions, notes et synonymies nouvelles. Revue d'entomologie, 2: 335–360.
Macleay, W.J. 1871: Notes on a collection of insects from Gayndah. Transactions of the Entomological Society of New South Wales, 2: 79–205.
Short, A.E.Z. 2010: Hydrophilidae: Review of the subtribe Acidocerina of the Southwest Pacific islands (Coleoptera). Pp. 297-318 in: Jäch, M.A. & Balke, M. (eds.): Water beetles of New Caledonia (part 1). Monographs on Coleoptera, 3 . ISSN: 1027-8869
Watts, C.H.S. 1998: Revision of Australian Enochrus Thomson (Coleoptera: Hydrophilidae). Records of the South Australian Museum, 30 (2): 137–156. PDF