Flea beetle

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Flea beetles
Phyllotreta.vittula.jpg
Phyllotreta vittula with characteristic feeding damage to Brassicaceae leaf
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Infraorder: Cucujiformia
Family: Chrysomelidae
Subfamily: Galerucinae
Tribe: Alticini
Newman, 1834 [1]
Genera

Many, see text

Altica species larva Altica larva.jpg
Altica species larva
Disonycha xanthomelas Disonycha xanthomelas.jpg
Disonycha xanthomelas
Luperaltica nigripalpis Luperaltica nigripalpis.jpg
Luperaltica nigripalpis

The flea beetle is a small, jumping beetle of the leaf beetle family (Chrysomelidae), that makes up the tribe Alticini which is part of the subfamily Galerucinae. Historically the flea beetles were classified as their own subfamily.

Contents

Though most tribes of the Galerucinae are suspect of rampant paraphyly in the present delimitation, the Alticini seem to form a good clade.[ clarification needed ][ citation needed ]

Traditionally, the Alticini were separated from other Galerucinae by the presence of a metafemoral spring (i.e., jumping hind legs). Recent phylogenetic studies suggest that jumping hind legs evolved multiple times in the Galerucinae, rather than once, and that several genera should be transferred between Alticini and Galerucinae sensu stricto (or Galerucini in some classifications). [2] [3]

Description and ecology

The adults are very small to moderately sized Chrysomelidae (i.e. among beetles in general they are on the smallish side). They are similar to other leaf beetles, but characteristically have the hindleg femora greatly enlarged. These enlarged femora allow for the springing action of these insects when disturbed. The jumping mechanism of flea beetles has been studied extensively. [4] One study looked at several species of flea beetles, including the Altica cirsicola species, and described the jumping mechanism of these beetles to be very efficient. [4] This study even applied the knowledge gained from the flea beetles to create a preliminary design for a bionic leg that can jump. [4] Flea beetles can also walk normally and fly. Many flea beetles are attractively colored; dark, shiny and often metallic colors predominate.

Adult flea beetles feed externally on plants, eating the surface of the leaves, stems and petals. Under heavy feeding the small round holes caused by an individual flea beetle's feeding may coalesce into larger areas of damage. Some flea beetle larvae (e.g. of Phyllotreta species) are root feeders.

In adverse weather conditions (rain, for example) some flea beetles seek shelter in the soil. Some species, such as Phyllotreta cruciferae and P. striolata , prefer to leave their hideouts only during warm and dry weather. The German name Erdflöhe (literally "earth fleas") refers to their jumping ability and this behavior of hiding in the soil.

Relationship with humans

Flea beetles may be beneficial or may be pests, depending on the species.

Pest

Many major agricultural crops are attacked by flea beetles, including various cruciferous plants such as mustard and rapeseed (particularly canola in northwestern North America). Numerous garden plants are also subject to flea beetle feeding, such as flowers of Gardenia and Rothmannia by Altica species.

Flea beetles execute their most severe attacks during dry weather and are most active on sunny days. The larvae are known to chew roots. [5]

Companion plant

Flea beetles can be deterred by a number of different companion plants, that can be grown intercropped in a garden to benefit neighboring plants. For example, thyme, catnip, and other kinds of mint cover up the scent of nearby plants. [6]

Radishes, on the other hand, can be grown as a trap crop, luring the flea beetles away from more important crops. Since the root isn't harmed by the beetles, they remain useful, themselves. [7]

A number of natural predators can be employed to keep flea beetles in check, including two that parasitize it: braconid wasps and tachinid flies. In both cases, the larval stage feeds on the flea beetle, while the adults feed on nectar and pollen; some species are even important pollinators. To encourage braconid wasps and tachinid flies, some types of flowers can be planted between crops: umbels such as caraway, herb fennel, coriander and Ammi majus , and simple open flowers such as California poppies and pot marigolds, as well as yarrows. [8]

Beneficial insect

Other flea beetle species are beneficial, feeding on weeds and similar nuisance plants. A few species have even been introduced to various locations as biological control agents against some weeds. One important example is in the control of leafy spurge ( Euphorbia virgata ), an invasive weed in the United States. It has a toxic latex and is generally avoided by herbivores. Flea beetles of the genus Aphthona have been successfully introduced to control this plant.

Selected genera

This genus list is not complete. It is also partially from ITIS and might include genera placed elsewhere in other sources.

See also

Related Research Articles

<span class="mw-page-title-main">Galerucinae</span> Subfamily of beetles

The Galerucinae are a large subfamily of the leaf beetles (Chrysomelidae), containing about 15,000 species in more than 1000 genera, of which about 500 genera and about 8000 species make up the flea beetle tribe Alticini.

Catherine N. Duckett is the Associate Dean of the School of Science at Monmouth University. Formerly she worked as Associate Director of the Office for the Promotion of Women in Science, Engineering and Mathematics, and the Program Manager of the Ocean Biogeographic Information System at Rutgers University, as well as a former Associate professor of Biology at University of Puerto Rico at Rio Piedras. She is also a prominent systematic entomologist, specializing in the phylogeny of flea beetles, and an adjunct professor at Rutgers.

<i>Altica</i> Genus of beetles

Altica is a large genus of flea beetles in the subfamily Galerucinae, with about 300 species, distributed nearly worldwide. The genus is best represented in the Neotropical realm, well represented in the Nearctic and Palearctic, but occurs also in the Afrotropic, Indomalaya, and Australasia. The species are similar to each other, small metallic blue-green-bronze beetles, often distinguished from each other only by the aedeagus. The species of Altica, both as larvae and as adults, are phytophagous, feeding on plant foliage of various food plant taxa, specific for each Altica species. Onagraceae and Rosaceae are the dominant host plant families for Holarctic species. The adult Altica beetles are able to jump away when approached.

<i>Phyllotreta undulata</i> Species of beetle

Phyllotreta undulata, known generally as the small striped flea beetle or turnip flea beetle, is a species of flea beetle in the family Chrysomelidae. It is found in Australia, Europe and Northern Asia, North America, and Oceania.

<span class="mw-page-title-main">Eumolpini</span> Tribe of leaf beetles

Eumolpini is a tribe of leaf beetles in the subfamily Eumolpinae. It is the largest tribe in the subfamily, with approximately 170 genera found worldwide. Members of the tribe almost always have a longitudinal median groove on the pygidium, which possibly helps to keep the elytra locked at rest. They also generally have a subglabrous body, as well as appendiculate pretarsal claws.

<span class="mw-page-title-main">Luperini (beetle)</span> Tribe of beetles

Luperini is a tribe of skeletonizing leaf beetles in the family Chrysomelidae. There are more than 30 genera and 500 described species in Luperini.

Acallepitrix is a genus of flea beetles in the family Chrysomelidae. There are more than 20 described species in Acallepitrix. They are found in the Neotropics, Central America, and North America.

<i>Asphaera</i> Genus of beetles

Asphaera is a genus of flea beetles in the family Chrysomelidae, containing some 130 species, found in North America, Central America, and the Neotropics.

Phyllotreta liebecki is a species of flea beetle in the family Chrysomelidae. It is found in North America.

<i>Chrysochus</i> Genus of beetles

Chrysochus is a genus of leaf beetles in the subfamily Eumolpinae. It is known from North America, Europe and Asia.

<i>Blepharida</i> Genus of beetles

Blepharida is a genus of leaf beetles of the subfamily Galerucinae. They have co-evolved with plants in the genus Bursera, which they feed on. The plants have developed a sticky, poisonous resin that sprays out when the leaves are bitten into, and the beetles have evolved to cut through the veins of the leaves to disable this mechanism first. There are currently 73 known species in Blepharida, which are found in the Nearctic, Neotropical, Afrotropical and southern Palearctic realms.

<i>Coelomera</i> Genus of leaf beetles

Coelomera is a genus of beetles belonging to the family Chrysomelidae.

<i>Podontia</i> Genus of flea beetles

Podontia is a genus of flea beetles in the family Chrysomelidae. They belong in the Blepharida-group of flea beetles.

<i>Macrohaltica</i> Genus of flea beetles

Macrohaltica is a genus of flea beetles in the family Chrysomelidae. There are about 20 described species in Macrohaltica, found in Central and South America.

<i>Cacoscelis</i> Genus of flea beetles

Cacoscelis is a genus of flea beetles in the family Chrysomelidae, found in southern North America, Central America, and South America.

<i>Walterianella</i> Genus of flea beetles

Walterianella is a genus of flea beetles in the family Chrysomelidae. There are more than 40 described species in Walterianella. They are found in Central and South America.

<i>Nisotra</i> Genus of beetles

Nisotra is a genus of flea beetles in the family Chrysomelidae. They are found in Africa, Asia, and Australia. There are around 90 described species in Nisotra, including about 70 in Sub-Saharan Africa and Madagascar. Many of these species are agricultural pests.

<i>Stuckenbergiana</i> Genus of beetles

Stuckenbergiana is a genus of flea beetles belonging to the family Chrysomelidae. There is a single described species, Stuckenbergiana glabrata, which is found in South Africa.

References

  1. ↑ Bouchard, Patrice; Bousquet, Yves; Davies, Anthony E.; Alonso-Zarazaga, Miguel A.; et al. (2011). "Family-group names in Coleoptera (Insecta)". ZooKeys (88): 1–972. Bibcode:2011ZooK...88....1B. doi: 10.3897/zookeys.88.807 . ISSN   1313-2989. PMC   3088472 . PMID   21594053.
  2. ↑ Nie, R.-E.; Breeschoten, T.; Timmermans, M.J.T.N.; Nadein, K.S.; Xue, H.-J.; Bai, M.; Huang, Y.; Yang, X.-K.; Vogler, A.P. (2017). "The phylogeny of Galerucinae (Coleoptera: Chrysomelidae) and the performance of mitochondrial genomes in phylogenetic inference compared to nuclear rRNA genes". Cladistics. 34 (2): 113–130. doi: 10.1111/cla.12196 . hdl: 10044/1/58308 . PMID   34645082.
  3. ↑ Douglas, H.B.; Konstantinov, A.S.; Brunke, A.J.; Moseyko, A.G.; Chapados, J.T.; Eyres, J.; Richter, R.; Savard, K.; Sears, E.; Prathapan, K.D.; Ruan, Y.; Dettman, J.R. (2023). "Phylogeny of the flea beetles (Galerucinae: Alticini) and the position of Aulacothorax elucidated through anchored phylogenomics (Coleoptera: Chrysomelidae: Alticini)". Systematic Entomology . 48 (3): 361–386. Bibcode:2023SysEn..48..361D. doi: 10.1111/syen.12582 .
  4. 1 2 3 Ruan, Yongying; Konstantinov, Alexander S.; Shi, Guanya; Tao, Yi; Li, You; Johnson, Andrew J.; Luo, Xiaozhu; Zhang, Xinying; Zhang, Mengna; Wu, Jianing; Li, Wenzhu; Ge, Siqin; Yang, Xingke (2020-02-24). "The jumping mechanism of flea beetles (Coleoptera, Chrysomelidae, Alticini), its application to bionics and preliminary design for a robotic jumping leg". ZooKeys (915): 87–105. Bibcode:2020ZooK..915...87R. doi: 10.3897/zookeys.915.38348 . ISSN   1313-2970. PMC   7052025 . PMID   32148424.
  5. ↑ Squire, David (2007). The Garden Pest & Diseases Specialist: The Essential Guide to Identifying and Controllong Pests and Diseases of Ornamentals, Vegetables and Fruits. New Holland Publishers. p. 35. ISBN   978-1845374853 . Retrieved November 12, 2012.[ permanent dead link ]
  6. ↑ "Garden Toad's Companion Plants". Archived from the original on 2014-07-01.
  7. ↑ 5 Secrets to Vegetable Garden, Companion Planting Revealed
  8. ↑ "Alys Fowler: flea beetle". The Guardian. 2013-04-06. Retrieved 2022-05-16.
  9. ↑ Linzmeier, Adelita M.; Konstantinov, Alexander S. (2018). "Andersonoplatus, a new, remarkable leaf litter inhabiting genus of Monoplatina (Coleoptera, Chrysomelidae, Galerucinae, Alticini)". ZooKeys (744): 79–138. Bibcode:2018ZooK..744...79L. doi: 10.3897/zookeys.744.22766 . PMC   5904521 . PMID   29670446.
  10. ↑ Moseyko, Alexey G.; Kirejtshuk, Alexander G.; Nel, Andre (2010). "New genera and new species of leaf beetles (Coleoptera: Polyphaga: Chrysomelidae) from Lowermost Eocene French amber". Annales de la Société Entomologique de France . Nouvelle Série. 46 (1–2): 116–123. doi: 10.1080/00379271.2010.10697645 . S2CID   84998148.
  11. ↑ D'Alessandro, Paola; Biondi, Maurizio (2018). "Ugandaltica gen. n., a tiny flea beetle from the forest canopy in Central Africa (Coleoptera, Chrysomelidae, Galerucinae, Alticini)". ZooKeys (746): 123–136. Bibcode:2018ZooK..746..123D. doi: 10.3897/zookeys.746.23637 . PMC   5904385 . PMID   29674899 . Retrieved 3 April 2018.
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