True Lateral Eye Numbers for Extant Buthids: A New Discovery on an Old Character
نویسندگان
چکیده
This study reports the results of a re-analysis of the number of lateral eyes in extant buthids. Specimens studied were confined mostly to those from China and the adjacent areas. 353 specimens belonging to 20 species (subspecies) and 8 genera were rechecked and found to have 5 pairs of lateral eyes contrary to earlier published works which reported the presence of 3 pairs of lateral eyes only. Combined with reported examples collected through reference investigation including 63 species from 16 genera, our study here shows a total of 79 species from 21 genera of scorpions spanning Asia and Africa had 5 pairs of lateral eyes. Reasons for not observing the presence of the extra lateral eyes are discussed and new protocols for examining specimens including using UV light are proposed to aid lateral eye recognition. Besides, a majority of genera in Buthidae are suggested to be in "Five-eye" model and a re-examination of all previously published taxonomic studies of buthid species is highly recommended.
منابع مشابه
Supplier Selection in Grey Environment: A Grey, AHP, Bulls-Eye and ELECTRE Approach
In recent years, the problem of selecting and evaluating the suppliers in supply chain management has aroused considerable interest in business firms. Owing to the development of information systems, reaching an appropriate decision for adopting discrete methods is a need. The researchers intend to present a new model in this paper as a contributing factor in the grey environment in which the r...
متن کاملSupplier Selection in Grey Environment: A Grey, AHP, Bulls-Eye and ELECTRE Approach
In recent years, the problem of selecting and evaluating the suppliers in supply chain management has aroused considerable interest in business firms. Owing to the development of information systems, reaching an appropriate decision for adopting discrete methods is a need. The researchers intend to present a new model in this paper as a contributing factor in the grey environment in which the r...
متن کاملAstragalar morphology of Afradapis, a large adapiform primate from the earliest late Eocene of Egypt.
The ∼37 million-year-old Birket Qarun Locality 2 (BQ-2), in the Birket Qarun Formation of Egypt's Fayum Depression, yields evidence for a diverse primate fauna, including the earliest known lorisiforms, parapithecoid anthropoids, and Afradapis longicristatus, a large folivorous adapiform. Phylogenetic analysis has placed Afradapis as a stem strepsirrhine within a clade of caenopithecine adapifo...
متن کاملA New Precision–Fed Chick Assay for Determining True Metabolizable Energy Values of some Poultry Feed Ingredients for Broiler Chickens
Two experiments were conducted to determine: first, the best time of excreta collection after force feeding of broilers to yield the maximal amount of excreta, and second, nitrogen-corrected true metabolizable energy contents of some poultry feedstuffs including yellow corn, soybean meal, corn gluten meal, canola meal and poultry by-product meal by a new precision-fed chick assay using 3-week-o...
متن کاملUnusual Presentation of Hypertropia in a Case of Anisometropic Heavy Eye Syndrome
Purpose: To report the presence of hypertropia with esotropia in the case of anisometropic Heavy Eye Syndrome (HES). Case Report: A 33-years old lady referred to the strabismus clinic for evaluation. The patientchr('39')s esotropia started at the age of 12 and gradually increased. Corrected visual acuity was 2/10 and 4/100 and refraction was -24-3.25×103 and -10.25-0.75× 34 in the right and lef...
متن کامل