New record of <i>Cheyletiella parasitivorax</i> (Mégnin, 1878) (Trombidiformes: Cheyletidae) from Brazil with an illustrated key to species for the genus

The cheyletid mites that parasitize mammals have been neglected for a long time in Brazil, although they can be common on pets and cause injury to their hosts. Recently, Cheyletiella parasitivorax was found parasitizing a rabbit in Brazil which represents a new host and distribution record for the mite species. An illustrated dichotomous key for the identification of the species in this genus and data from the literature are provided.

Keywords:
Cheyletiellosis; São Paulo State; morphology; identification key

Authorship

Darci Moraes Barros-Battesti ^**Corresponding author: Darci Moraes Barros-Battesti. E-mail: barros.battesti@gmail.com

Departamento de Patologia Veterinária, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista – UNESP, Jaboticabal, SP, BrasilUniversidade Estadual PaulistaBrasilJaboticabal, SP, BrasilDepartamento de Patologia Veterinária, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista – UNESP, Jaboticabal, SP, Brasil

Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia – FMVZ, Universidade de São Paulo – USP, São Paulo, SP, BrasilUniversidade de São PauloBrasilSão Paulo, SP, BrasilDepartamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia – FMVZ, Universidade de São Paulo – USP, São Paulo, SP, Brasil

http://orcid.org/0000-0002-8541-2252

Ricardo Bassini-Silva

Fernando de Castro Jacinavicius

Laboratório Especial de Coleções Zoológicas, Instituto Butantan, São Paulo, SP, BrasilInstituto ButantanBrasilSão Paulo, SP, BrasilLaboratório Especial de Coleções Zoológicas, Instituto Butantan, São Paulo, SP, Brasil

Marcos Rogério André

Ronald Ochoa

Systematic Entomology Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD, USAAgricultural Research ServiceUSABeltsville, MD, USASystematic Entomology Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD, USA

Raphael Vieira Ramos

Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas – UNICAMP, Campinas, SP, BrasilUniversidade Estadual de CampinasBrasilCampinas, SP, BrasilDepartamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas – UNICAMP, Campinas, SP, Brasil

Silmara Marques Allegretti

*Corresponding author: Darci Moraes Barros-Battesti. E-mail: barros.battesti@gmail.com

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (6)

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Figure 1
Morphological details of Cheyletiella parasitivorax. (A) Female, dorsal view; (B) Female, anterior propodosomal shield; (C) Female, empodium of tarsus II; (D) Female, posterior propodosomal shield; (E) Female, gnathosoma and palpi; (F) Female, peritremal links; (G) Male, dorsal view; (H) Male, peritremal links; (I) Female, globose solenidion; (J) Male, oblong solenidion. Abbreviations: d1-d3, dorsal setae; h, line h setae; l1, lateral setae; sci, scutal internal setae; ve, vertical external setae; vi, vertical internal setae. Scales: A 100 µm; B, D, E 50 µm; C, F, G, H, I, J 20 µm.

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Figure 2
Geographical distribution of Cheyletiella parasitivorax in Brazil. The yellow triangles represent a literature record, and orange dot is the new record.

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Figure 3
Morphological details of Cheyletiella blakei (Paratype USNM 3346). (A) Female, dorsal view; (B) Female, anterior propodosomal shield; (C) Female, gnathosoma and palpi; (D) Female, peritremal links and conical solenidion on genu I; (E) Male, dorsal view; (F) Male, conical solenidion on genu I. Abbreviations: d1-d3, dorsal setae; h, line h setae; l1, lateral setae; sce, scutal external setae; sci, scutal internal setae; ve, vertical external setae; vi, vertical internal setae. Scales: A 100 µm; B, E 20 µm; C, D, F 10 µm.

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Figure 4
Morphological details of Cheyletiella strandtmanni (Holotype female USNM 3345). (A) Dorsal view; (B) Anterior propodosomal shield; (C) Gnathosoma and palpi; (D) large peritremal links and Y-shaped solenidion on genu I. Abbreviations: d1-d3, dorsal setae; h, line h setae; l1, lateral setae; sci, scutal internal setae; ve, vertical external setae; vi, vertical internal setae. Scales: A 100 µm; B, C 50 µm; D 20 µm.

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Figure 5
Morphological details of Cheyletiella yasguri (Holotype USNM 2956 and paratype). (A) Female, dorsal view, the setae indicate a pair of small rounded hysterosomal shields; (B) Hysterosomal shields; (C) Female, heart-shaped solenidion on genu I; (D) Male, hysterosomal shield; (E) Male, large peritremal links; (F) Male, heart-shaped solenidion on genu I. Abbreviations: d1-d3, dorsal setae; l1, lateral setae. Scales: A 100 µm; B, E 50 µm; C, D, F 20 µm.

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Figure 6
Dandruff flakes in the dorsal region of the rabbit infested by C. parasitivorax.

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Figure 6
Dandruff flakes in the dorsal region of the rabbit infested by C. parasitivorax.

Figure 1 Morphological details of Cheyletiella parasitivorax. (A) Female, dorsal view; (B) Female, anterior propodosomal shield; (C) Female, empodium of tarsus II; (D) Female, posterior propodosomal shield; (E) Female, gnathosoma and palpi; (F) Female, peritremal links; (G) Male, dorsal view; (H) Male, peritremal links; (I) Female, globose solenidion; (J) Male, oblong solenidion. Abbreviations: d1-d3, dorsal setae; h, line h setae; l1, lateral setae; sci, scutal internal setae; ve, vertical external setae; vi, vertical internal setae. Scales: A 100 µm; B, D, E 50 µm; C, F, G, H, I, J 20 µm.

Figure 2 Geographical distribution of Cheyletiella parasitivorax in Brazil. The yellow triangles represent a literature record, and orange dot is the new record.

Figure 3 Morphological details of Cheyletiella blakei (Paratype USNM 3346). (A) Female, dorsal view; (B) Female, anterior propodosomal shield; (C) Female, gnathosoma and palpi; (D) Female, peritremal links and conical solenidion on genu I; (E) Male, dorsal view; (F) Male, conical solenidion on genu I. Abbreviations: d1-d3, dorsal setae; h, line h setae; l1, lateral setae; sce, scutal external setae; sci, scutal internal setae; ve, vertical external setae; vi, vertical internal setae. Scales: A 100 µm; B, E 20 µm; C, D, F 10 µm.

Figure 4 Morphological details of Cheyletiella strandtmanni (Holotype female USNM 3345). (A) Dorsal view; (B) Anterior propodosomal shield; (C) Gnathosoma and palpi; (D) large peritremal links and Y-shaped solenidion on genu I. Abbreviations: d1-d3, dorsal setae; h, line h setae; l1, lateral setae; sci, scutal internal setae; ve, vertical external setae; vi, vertical internal setae. Scales: A 100 µm; B, C 50 µm; D 20 µm.

Figure 5 Morphological details of Cheyletiella yasguri (Holotype USNM 2956 and paratype). (A) Female, dorsal view, the setae indicate a pair of small rounded hysterosomal shields; (B) Hysterosomal shields; (C) Female, heart-shaped solenidion on genu I; (D) Male, hysterosomal shield; (E) Male, large peritremal links; (F) Male, heart-shaped solenidion on genu I. Abbreviations: d1-d3, dorsal setae; l1, lateral setae. Scales: A 100 µm; B, E 50 µm; C, D, F 20 µm.

Figure 6 Dandruff flakes in the dorsal region of the rabbit infested by C. parasitivorax.

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Colégio Brasileiro de Parasitologia Veterinária FCAV/UNESP - Departamento de Patologia Veterinária, Via de acesso Prof. Paulo Donato Castellane s/n, Zona Rural, , 14884-900 Jaboticabal - SP, Brasil, Fone: (16) 3209-7100 RAMAL 7934 - Jaboticabal - SP - Brazil
E-mail: cbpv_rbpv.fcav@unesp.br

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New record of <i>Cheyletiella parasitivorax</i> (Mégnin, 1878) (Trombidiformes: Cheyletidae) from Brazil with an illustrated key to species for the genus

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[1] *Corresponding author: Darci Moraes Barros-Battesti. E-mail: barros.battesti@gmail.com