Scutascirus
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Ordo: Trombidiformes
Familia: Cunaxidae
Name
Scutascirus Den Heyer, 1976 – Wikispecies link – Pensoft Profile
Historical review
Den Heyer (1976)[1] erected Scutascirus for Scutascirus polyscutosus. Shiba (1978)[2] described Cunaxa exasperatus. Den Heyer (1980b)[3] described Scutascirus braziliensis. Chaudhri (1980)[4] described Scutascirus pigrus. Smiley (1992)[5] transferred Cunaxa exasperatus to Scutascirus. Corpuz-Raros and Garcia (1996)[6] described Scutascirus contiguus and Scutascirus pentascutellus. Lin, Zhang and Ji (2001)[7] described Scutascirus triangulum.
Diagnosis
Gnathosoma. Pedipalps 5-segmented and reach beyond the subcapitulum by at most the distal half of the tibiotarsi. Basifemora and telofemora fused but retain a dark line. The tibiotarsi complemented with a tubercle and a dorsodistal solenidion. Pedipalps end in a stout claw. Chelicera with seta present or absent. Subcapitulum bears 6 pairs of setae: 2 pairs of adoral setae and 4 pairs of subcapitular setae (hg1–4). Setae hg4 often the longest.
Idiosoma, dorsal. Proterosoma covered in a shield which bears 4 pairs of setae: 2 pairs of simple setae (lps and mps) and 2 pairs of setose sensilla (at and pt). Dorsal hysterosoma bears a median plate which is fused with the proterosomal shield and four pairs of lateral platelets. Plates and shields covered with papillae that form reticulations. 8 pairs of setae present on the dorsal hysterosoma (c1–f1, c2, f2, h2); these setae occur on the fused dorsal shield. Cupule im present, usually laterad or in the proximity of e1. Unsclerotized integument striated.
Idiosoma, ventral. Coxae I–II fused and coalesce medially to form a single sternal plate. Each pair of coxae complemented with 3 pairs of setae; if they form an extensive sternal shield setae normally born on the unsclerotized integument may be located on the shield. Coxae III–IV fused and extend posteriorly beyond the genital plates. Genital plates each bear 4 setae; 2 pairs of genital papillae visible underneath the plates. 1–8 pairs of setae present on the integument between coxae III and the genital plates. Anal plates complemented with 2 pairs of setae (ps1-2). Two pairs of setae (h2, pa) located on the integument near the anal plates. Cupule ih present in close proximity to h2. Legs shorter than idiosoma. Tarsi never constricted apically so as to end in lobes. Trichobothrium on leg tibia IV present. Ambulacral claws on either side of a four-rayed empodium present.
Key to adult female Scutascirus
Scutascirus tactus is not included in the following key as it is described only from the male.
Taxon Treatment
- Skvarla, M; Fisher, J; Dowling, A; 2014: A review of Cunaxidae (Acariformes, Trombidiformes): Histories and diagnoses of subfamilies and genera, keys to world species, and some new locality records ZooKeys, 418: 1-103. doi
Images
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![Figures 90, 91. Scutascirus key illustrations. 90a (after Corpuz-Raros and Garcia 1996[6]). Pedipalp with tubercle not branched 90b (after Den Heyer 1980b[3]). Pedipalp tibiotarsus with bifurcate tubercle positioned halfway along the length of the segment 90c (after Den Heyer 1980b[3]). Pedipalp tibiotarsus with bifurcate tubercle positioned on distal third of segment 90d (after Lin et al. 2001[7]). Pedipalp tibiotarsus with trifurcate tubercle 90a (after Den Heyer 1980b[3]). Four pairs of dorsolateral hysterosomal plates present 91b (after Corpuz-Raros and Garcia 1996[6]). Five pairs of dorsolateral hysterosomal plates present.](/wiki/File:Zookeys-418-001-g026.jpg)
Other References
- ↑ Den Heyer J (1976) Scutascirus, a new cunaxid genus (Prostigmata: Acari) from South Africa. Wetenskaplike bydraes van die PU vir CHO, Reeks B: Natuurwetenskappe 92: 1–10.
- ↑ Shiba M (1978) Taxonomic investigation on free-living Prostigmata from the Malay Peninsula. Nature and Life in South East Asia 7: 83–229.
- ↑ 3.0 3.1 3.2 3.3 Den Heyer J (1980b) Six new species of the subfamily Coleoscirinae (Cunaxidae: Actinedida: Acarida). Phytophylactica 12: 105–128.
- ↑ Chaudhri W (1980) Studies on the biosystematics and control of mites of field crops, vegetables and fruit plants in Pakistan, second annual report. University of Agriculture Faisalabad, 80.
- ↑ Smiley R (1992) The predatory mite family Cunaxidae (Acari) of the world with a new classification. Indira Publishing House, West Bloomington, Michigan, 356 pp.
- ↑ 6.0 6.1 6.2 Corpuz-Raros L, Garcia R (1996) Philippine predatory mites of the family Cunaxidae (Acari). Genera Pseudobonzia Smiley and Scutascirus Den Heyer. Philippine Entomologist 10(1): 15–28.
- ↑ 7.0 7.1 Lin J, Zhang Y, Ji J (2001) Three new species of Cunaxidae from Fujian, China. Systematic and Applied Acarology 6: 145–153.
