What to Feed a Click Beetle
| Click beetles Temporal range: | |
|---|---|
 | |
| Click beetle adults and larvae (wireworms) Left: Wheat Wireworm (Agriotes mancus) Right: Sand Wireworm (Horistonotus uhlerii) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Suborder: | Polyphaga |
| Infraorder: | Elateriformia |
| Superfamily: | Elateroidea |
| Family: | Elateridae Leach, 1815 |
| Subfamilies[2] | |
| Agrypninae | |
| Synonyms | |
| Ampedidae | |
Click beetle on a potato plant in an Oklahoma garden
Elateridae or click beetles (or "typical click beetles" to distinguish them from the related families Cerophytidae and Eucnemidae, which are also capable of clicking) are a family of beetles. Other names include elaters, snapping beetles, spring beetles or skipjacks. This family was defined by William Elford Leach (1790–1836) in 1815. They are a cosmopolitan beetle family characterized by the unusual click mechanism they possess. There are a few other families of Elateroidea in which a few members have the same mechanism, but most elaterid subfamilies can click. A spine on the prosternum can be snapped into a corresponding notch on the mesosternum, producing a violent "click" that can bounce the beetle into the air.[3] Clicking is mainly used to avoid predation, although it is also useful when the beetle is on its back and needs to right itself. There are about 9300 known species worldwide,[4] and 965 valid species in North America.[5]
Etymology [edit]
Leach took the family name from the genus Elater, coined by Linnaeus in 1758. In Greek, ἐλατήρ means one who drives, pushes, or beats out.[6] It is also the origin of the word "elastic", from the notion of beating out a ductile substance.[7]
Description and ecology [edit]
Some click beetles are large and colorful, but most are under two centimeters long and brown or black, without markings. The adults are typically nocturnal and phytophagous, but only some are of economic importance. On hot nights they may enter houses, but are not pests there. Click beetle larvae, called wireworms, are usually saprophagous, living on dead organisms, but some species are serious agricultural pests, and others are active predators of other insect larvae. Some elaterid species are bioluminescent in both larval and adult form, such as those of the genus Pyrophorus.
Larvae are elongate, cylindrical or somewhat flattened, with hard bodies, somewhat resembling mealworms. The three pairs of legs on the thoracic segments are short and the last abdominal segment is, as is frequently the case in beetle larvae, directed downward and may serve as a terminal proleg in some species.[8] The ninth segment, the rearmost, is pointed in larvae of Agriotes, Dalopius and Melanotus, but is bifid due to a so-called caudal notch in Selatosomus (formerly Ctenicera), Limonius, Hypnoides and Athous species.[9] The dorsum of the ninth abdominal segment may also have sharp processes, such as in the Oestodini, including the genera Drapetes and Oestodes. Although some species complete their development in one year (e.g. Conoderus), most wireworms spend three or four years in the soil, feeding on decaying vegetation and the roots of plants, and often causing damage to agricultural crops such as potato, strawberry, corn, and wheat.[10] [11] The subterranean habits of wireworms, their ability to quickly locate food by following carbon dioxide gradients produced by plant material in the soil,[12] and their remarkable ability to recover from illness induced by insecticide exposure (sometimes after many months),[13] make it hard to exterminate them once they have begun to attack a crop. Wireworms can pass easily through the soil on account of their shape and their propensity for following pre-existing burrows,[14] and can travel from plant to plant, thus injuring the roots of multiple plants within a short time. Methods for pest control include crop rotation and clearing the land of insects before sowing.
Other subterranean creatures such as the leatherjacket grub of crane flies which have no legs, and geophilid centipedes, which may have over two hundred, are sometimes confused with the six-legged wireworms.[8]
Evolution [edit]
The oldest known species date to the Triassic, but most are problematic due to only being known from isolated elytra. Many fossil elaterids belong to the extinct subfamily Protagrypninae.[15]
Selected genera [edit]
- Actenicerus
- Adelocera
- Adrastus
- Aeoloderma
- Aeoloides
- Aeolus
- Agriotes
- Agrypnus
- Alaus
- Ampedus
- Anchastus
- Anostirus
- Aplotarsus
- Athous
- Balgus
- Betarmon
- Brachygonus
- Brachylacon
- Brongniartia
- Calambus
- Cardiophorus
- Cebrio
- Chalcolepidus
- Cidnopus
- Conoderus
- Craspedostethus
- Crepidophorus
- Ctenicera
- Dacnitus
- Dalopius
- Danosoma
- Deilelater
- Diacanthous
- Dicronychus
- Dima
- Drilus
- Eanus
- Ectamenogonus
- Ectinus
- Elater
- Elathous
- Eopenthes
- Fleutiauxellus
- Haterumelater
- Hemicleus
- Hemicrepidius
- Heteroderes
- Horistonotus
- Hypnoidus
- Hypoganus
- Hypolithus
- Idolus
- Ignelater
- Ischnodes
- Isidus
- Itodacne
- Jonthadocerus
- Lacon
- Lanelater
- Limoniscus
- Limonius
- Liotrichus
- Megapenthes
- Melanotus
- Melanoxanthus
- Metanomus
- Merklelater
- Mulsanteus
- Negastrius
- Neopristilophus
- Nothodes
- Oedostethus
- Orithales
- Paracardiophorus
- Paraphotistus
- Peripontius
- Pheletes
- Pittonotus
- Pityobius
- Podeonius
- Porthmidius
- Procraerus
- Prodrasterius
- Prosternon
- Pyrearinus
- Pyrophorus
- Quasimus
- Reitterelater
- Selatosomus
- Sericus
- Simodactylus
- Spheniscosomus
- Stenagostus
- Synaptus
- Vesperelater
- Zorochros
Notes [edit]
Lateral aspect of a typical member of the Elateridae. Just below the base of the wings the "clicking" apparatus is visible in silhouette, with the "peg" or "process" in contact with the raised slot or "cavity" into which it slips to force the impact when required.
- ^ Kusy, Dominik; Motyka, Michal; Bocek, Matej; Vogler, Alfried P.; Bocak, Ladislav (2018-11-20). "Genome sequences identify three families of Coleoptera as morphologically derived click beetles (Elateridae)". Scientific Reports. Springer Science and Business Media LLC. 8 (1): 17084. Bibcode:2018NatSR...817084K. doi:10.1038/s41598-018-35328-0. ISSN 2045-2322. PMC6244081. PMID 30459416.
- ^ Robin Kundrata, Nicole L. Gunter, Dominika Janosikova & Ladislav Bocak (2018) Molecular evidence for the subfamilial status of Tetralobinae (Coleoptera: Elateridae), with comments on parallel evolution of some phenotypic characters. Arthropod Systematics & Phylogeny 76: 137-145.
- ^ How the click beetle jumps from the back !. Myrmecofourmis.fr on Youtube. 2015. Archived from the original on 2021-12-21. Retrieved 3 December 2015.
- ^ Schneider, M. C.; et al. (2006). "Evolutionary chromosomal differentiation among four species of Conoderus Eschscholtz, 1829 (Coleoptera, Elateridae, Agrypninae, Conoderini) detected by standard staining, C-banding, silver nitrate impregnation, and CMA3/DA/DAPI staining". Genetica. 128 (1–3): 333–346. doi:10.1007/s10709-006-7101-5. PMID 17028962. S2CID 1901849.
- ^ Majka, C. G.; P. J. Johnson (2008). "The Elateridae (Coleoptera) of the Maritime Provinces of Canada: faunal composition, new records, and taxonomic changes" (PDF excerpt). Zootaxa. 1811: 1–33. doi:10.11646/zootaxa.1811.1.1.
- ^ Wiktionary - "elater"
- ^ Wiktionary - "elastic"
- ^ a b One or more of the preceding sentences incorporates text from a publication now in the public domain:Chisholm, Hugh, ed. (1911). "Wireworm". Encyclopædia Britannica. Vol. 28 (11th ed.). Cambridge University Press. p. 739.
- ^ van Herk, W. (March 12, 2009). "Limonius: wireworm research site". Archived from the original on June 7, 2011. Retrieved January 22, 2011.
- ^ R. S. Vernon; W. van Herk; J. Tolman; H. Ortiz Saavedra; M. Clodius; B. Gage (2008). "Transitional sublethal and lethal effects of insecticides after dermal exposures to five economic species of wireworms (Coleoptera: Elateridae)". Journal of Economic Entomology. 101 (2): 365–374. doi:10.1603/0022-0493(2008)101[365:TSALEO]2.0.CO;2. PMID 18459400.
- ^ William E. Parker; Julia J. Howard (2001). "The biology and management of wireworms (Agriotes spp.) on potato with particular reference to the U.K." Agricultural and Forest Entomology. 3 (2): 85–98. doi:10.1046/j.1461-9563.2001.00094.x.
- ^ J. F. Doane; Y. W. Lee; N. D. Westcott; J. Klingler (1975). "The orientation response of Ctenicera destructor and other wireworms (Coleoptera: Elateridae) to germinating grain and to carbon dioxide". Canadian Entomologist. 107 (12): 1233–1252. doi:10.4039/Ent1071233-12.
- ^ W. G. van Herk; R. S. Vernon; J. H. Tolman; H. Ortiz Saavedra (2008). "Mortality of a wireworm, Agriotes obscurus (Coleoptera: Elateridae), after topical application of various insecticides". Journal of Economic Entomology. 101 (2): 375–383. doi:10.1603/0022-0493(2008)101[375:moawao]2.0.co;2. PMID 18459401.
- ^ Willem G. van Herk; Robert S. Vernon (2007). "Soil bioassay for studying behavioral responses of wireworms (Coleoptera: Elateridae) to inecticide-treated wheat seed". Environmental Entomology. 36 (6): 1441–1449. doi:10.1603/0046-225X(2007)36[1441:SBFSBR]2.0.CO;2. PMID 18284772.
- ^ Kundrata, Robin; Packova, Gabriela; Hoffmannova, Johana (2020-06-26). "Fossil Genera in Elateridae (Insecta, Coleoptera): A Triassic Origin and Jurassic Diversification". Insects. 11 (6): 394. doi:10.3390/insects11060394. ISSN 2075-4450. PMC7348820. PMID 32604761.
References [edit]
- Rines, George Edwin, ed. (1920). . Encyclopedia Americana.
External links [edit]
On the University of Florida / Institute of Food and Agricultural Sciences Featured Creatures website:
- Click beetles, Alaus spp.
- Conoderus rudis (Brown)
- Conoderus scissus Schaeffer
Source: https://en.wikipedia.org/wiki/Click_beetle
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