Amblyseius bidens

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Amblyseius bidens
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Mesostigmata
Family: Phytoseiidae
Genus: Amblyseius
Species:
A. bidens
Binomial name
Amblyseius bidens
Karg, 1970

Amblyseius bidens is a species of mite belonging to the genus Amblyseius in the family Phytoseiidae. [1]

Contents

Distribution

A. bidens is observed to have a wide distribution, being found across Europe. The species was first documented by the zoologist Wolfgang Karg in 1970, detailing specimens found in Germany. [2] In addition, the species is among the most abundant mite species of the grasslands of Austria. [3] Specimens of the species have been found to be concentrated in the mountainous regions of southeastern Slovakia. [2]

The species is not confined to mainline Europe, the species is observed among many others inhabiting peatlands in Ireland. [4]

Description

Initial descriptions of A. bidens by Karg were not particularly detailed. [2] The species is observed to have a smooth and idiosomal patterned body. [2] Both sexes have a distinguishing and large genital shield. [2] [3] The legs of the species are uneven, with fewer sections on the right legs than the left. [2]

The species exhibits strong sexual dimorphism. Females are noticeably larger, have more teeth, and more mobile chelicera. [2]

Comparatively, the species is visually similar to Amblyseius myrtilli , a related species of mite commonly found on European Blueberry. A. bidens can be distinguished by it's dorsal shield, which has five solenostomes as opposed to the seven found on A. myrtilli. [2] The spermatheca of A. bidens is nearly identical Neoseiulus roumelioticus . [5]

Behavior

Similar to other predatory mites, A. bidens is considered a natural biological control against agricultural pests in its native habitat. [6] The species primarily consumes grasses, with it showing a preference for younger plants that have only recently reached maturity. [3]

The species is observed to primarily inhabit the soil of wet and grassy environments. [3] This is in addition to the species being observed living in the nests of birds, a behavior usually exclusive to parasitic mites, rather than predatory mites. [7]

References

  1. "Amblyseius bidens". GBIF. Retrieved 2020-01-22.
  2. 1 2 3 4 5 6 7 8 Döker, Ismail (30 August 2025). "A complementary description of Amblyseius bidens Karg (Acari: Phytoseiidae) and two new species records from Slovakia" (PDF). Acarologia. 64 (3). Retrieved 6 November 2025.
  3. 1 2 3 4 Wissuwa, Janet (July 2012). "Effects of habitat age and plant species on predatory mites (Acari, Mesostigmata) in grassy arable fallows in Eastern Austria". Soil Biology and Biochemistry. 50 (6): 96–107. Retrieved 6 November 2025.
  4. Wisdom, Rachel (April 2010). Biodiversity of some of the invertebrate taxa occurring in terrestrial habitats in different types of Irish peatlands (PDF) (Doctor of Sciences thesis). National University of Ireland . Retrieved 6 November 2025.
  5. Švecová, Lucia. "DIC micrograph of spermatheca of Neoseiulus roumelioticus Papadoulis, Emmanouel & Kapaxidi, 2009" . Retrieved 6 November 2025.
  6. Trdan, Stanislav (1 October 2020). "Thirty Years of Research and Professional Work in the Field of Biological Control (Predators, Parasitoids, Entomopathogenic and Parasitic Nematodes) in Slovenia: A Review". Applied Sciences. 10 (21). Retrieved 7 November 2025.
  7. Fenda, Peter. "Thirty Years of Research and Professional Work in the Field of Biological Control (Predators, Parasitoids, Entomopathogenic and Parasitic Nematodes) in Slovenia: A Review" (PDF). Comenius University . Retrieved 7 November 2025.