News Update on Acari Research: Dec – 2019

Raphignathoidea (Acari: Prostigmata)

The mite taxonomic category Raphignathoidea (Acari: Prostigmata) is comprehensively revised. Keys to world families and genera of Raphignathoidea area unit enclosed. The taxonomy, biology, and ecology of world Raphignathoidea area unit in short reviewed. seventy six species happiness to twenty genera and five families recognised as occurring in New Sjaelland, area unit diagnosed, keyed, and delineate. proverbial stages (if specimens available) of latest Sjaelland raphignathoid species area unit delineate and illustrated with line drawings, and notes area unit provided on the taxonomical references, habitats, and distribution of every species. [1]

Revised keys to world genera of Eriophyoidea (Acari: Prostigmata).

Illustrated keys to the genera of the Eriophyoidea (Phytoptidae, Eriophyidae and Diptilomiopidae) square measure provided. To the initial work (Keys to the planet Genera of Eriophyoidea, Amrine, 1996), we’ve got side sixty one new genera, reflective the continued active analysis and right smart diversity of this cluster. additionally, seven derived generic names bestowed herein square measure Changmaia, Davisella, Kaella, Meyerella, Oziella, Phetehaburus and Steopa. New synonomies embody the following: Abacoptes, Bachinius, Bamboocarus, Chonburinus, Cisaberoptus, Criophyes, Kasetsarus, Kropczynella, Lovonotus, Macrotuberculatus, Milleniophyes, Setoptus, Siamphyes, Spatha, Thiracarus, Ursynovia, and Xynocatarhinus. [2]

Varroa jacobsoni (Acari: Varroidae) is more than one species

Varroa jacobsoni was initial represented as a natural ectoparasitic mite of the jap Apis mellifera (Apis cerana) throughout Asia. It later switched host to the Western Apis mellifera (A. mellifera) and has currently become a significant blighter of that bee worldwide. The studies reportable here on constitution, phenotypical and fruitful variation among V. jacobsoni infesting A. cerana throughout Asia demonstrate that V. jacobsoni could be a advanced of a minimum of 2 completely different species. in an exceedingly new classification V. jacobsoni is here redefined as encompassing 9 haplotypes (mites with distinct mtDNA CO-I sequence sequences) that infest A. cerana within the Malaysia–Indonesia region. [3]

Increasing species sampling in chelicerate genomic-scale datasets provides support for monophyly of Acari and Arachnida

Chelicerates area unit a various cluster of arthropods, painted by such forms as predatory spiders and scorpions, parasitic ticks, dirt detritivores, and marine ocean spiders (pycnogonids) and horseshoe crabs. Conflicting biological process relationships are planned for chelicerates supported each morphological and molecular knowledge, the latter typically not convalescent arachnids as a biological group and instead finding horseshoe crabs nested within terrestrial class Arachnida. Here, victimization genomic-scale datasets and analyses optimised for countering systematic error, we discover sturdy support for monophyletic Acari (ticks and mites), that once thought-about as one cluster represent the foremost biodiverse extremity lineage. [4]

Chemical Composition and Evaluation of the Acaricidal Activity of Two Essential Oils and Their Formulations against the Two-spotted Spider Mite Tetranychus urticae Koch (Acari: Tetranychidae)

The artificial acaricides were wont to management two-spotted tetranychid. The exploitation increase of biocide cause issues like environmental pollution and chemical resistance, these desires increasing the property, environmentally-friendly management ways. The essential oils’ perishable with acaricidal properties referring as inexperienced pesticides. The study was aimed to see the chemical composition and acaricidal activity of 2 essential oils extracted by hydro-distillation of the Basil (Ocimum basilicum L.), Caraway seeds (Carum Carvi L.) and their formulations that were ready as emulsifiable concentrates (ECs) against the two-spotted tetranychid as a model below laboratory conditions. [5]

Reference

[1] Fan, Q.H. and Zhang, Z.Q., 2005. Raphignathoidea (Acari: Prostigmata). Fauna of New Zealand, 52. (Web Link)

[2] Amrine Jr, J.W., Stasny, T.A. and Flechtmann, C.H., 2003. Revised keys to world genera of Eriophyoidea (Acari: Prostigmata). Indira Publishing House. (Web Link)

[3] Anderson, D.L. and Trueman, J.W.H., 2000. Varroa jacobsoni (Acari: Varroidae) is more than one species. Experimental & applied acarology, 24(3), (Web Link)

[4] Increasing species sampling in chelicerate genomic-scale datasets provides support for monophyly of Acari and Arachnida
Jesus Lozano-Fernandez, Alastair R. Tanner, Mattia Giacomelli, Robert Carton, Jakob Vinther, Gregory D. Edgecombe & Davide Pisani
Nature Communications volume 10, (Web Link)

[5] A. F. Wasfy, A., M. Torkey, H. and H. F. Hagag, H. (2018) “Chemical Composition and Evaluation of the Acaricidal Activity of Two Essential Oils and Their Formulations against the Two-spotted Spider Mite Tetranychus urticae Koch (Acari: Tetranychidae)”, Journal of Applied Life Sciences International, 17(3), (Web Link)

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