A new case of trombiculiasis caused by Eutrombicula daemoni Bassini-Silva & Jacinavicius, 2018 (Trombidiformes: Trombiculidae) in a dog from Brazil


  • Rodrigo Santos-Rodrigues Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo, SP https://orcid.org/0000-0001-5116-744X
  • Ricardo Bassini-Silva Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo, SP/Departamento de Patologia, Reprodução e Saúde Única, Faculdade de Ciências Agrárias e Veterinárias-UNESP, Jaboticabal, SP https://orcid.org/0000-0002-9568-4120
  • Matheus Huang-Bastos Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo, SP/Departamento de Medicina Veterinária Preventiva e Saúde Animal, FMVZ-USP, São Paulo, SP https://orcid.org/0000-0002-1784-8847
  • Karine M. de Q. Araujo Equalis Instituto de Pós Graduação em Dermatologia Veterinária, São Paulo, SP
  • Flavia C. G. de Carvalho Equalis Instituto de Pós Graduação em Dermatologia Veterinária, São Paulo, SP https://orcid.org/0000-0003-4113-5764
  • Guilherme Brêtas Clínica Veterinária Dr. Guilherme Brêtas, Vila Velha, ES
  • Fernando de C. Jacinavicius Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo, SP https://orcid.org/0000-0002-5503-3120




Chiggers, ectoparasites, Espírito Santo state, Carnivora, Canis lupus familiaris


Chiggers are ectoparasites and can cause severe dermatitis in their hosts, known as trombiculiasis. Besides that, these mites can be vectors of bacteria of the genus Orientia, in various regions of the world. The genera Eutrombicula Ewing, 1938 is currently represented by more than 80 species worldwide. Species of this genus are recorded parasitizing reptiles, birds, and mammals. One of this species, Eutrombicula daemoni Bassini-Silva & Jacinavicius, 2018 was recently described causing trombiculiasis in a dog. Our goal is to report a new case of a dog’s trombiculiasis, including a new locality record for E. daemoni in Brazil. In May 2021, a female Shih-Tzu dog with three years old and with access to the forest of the Santa Tereza municipality, southeastern Brazil, sought veterinary medical attention for intense itching and erythema in the facial region. Mites were collected directly from the face of the dog. These materials were slide-mounted and deposited in the Acarological Collection of the Butantan Institute (IBSP). The material extracted from the dog was examined and identified as E. daemoni. Part of the fixation site tissue of the dog was collected, showing the feeding tube produced by the enzymatic reaction of saliva by the mite, known as a stylostome. In this report, we emphasize the occurrence of trombiculiasis in domestic animals that have access to forest regions, places that unfed chigger larvae live. Additionally, this record represents a new locality record for E. daemoni to the Espírito Santo State, Brazil.


Download data is not yet available.


Apesteguía, A. M.; Portell, A. J. B.; Kassab, H. N.; Salinas, G. M. J. (2019) Severe trombiculiasis in hunting dogs infested with Neotrombicula inopinata (Acari: Trombiculidae). Journal of Medical Entomology, 56(5): 1389-1394. doi: 10.1093/jme/tjz071

Barros-Battesti, D. M.; Jacinavicius, F. C.; Bauchan, G.; Bassini-Silva, R. (2021) Chapter 24: Techniques for studies on Acariformes. In: Barros-Battesti, D. M.; Machado, R. Z.; André, M. R. (Eds.), Brazilian ectoparasite fauna of veterinary importance, Volume 1, Mite fauna of veterinary importance: Acariformes, pp. 294-303. Jaboticabal: CBPV.

Bassini-Silva, R.; Jacinavicius, F. C.; Muñoz-Leal, S.; Maturano, R.; Welbourn, W. C.; Ochoa, R.; Bauchan, G. R.; Barros-Battesti, D. M. (2018) A new species of the genus Eutrombicula Ewing, 1938 (Trombidiformes: Trombiculidae) and new records for the species Eutrombicula batatas (Linnaeus, 1758) in Brazil. Acarologia, 58: 976-986. doi: 10.24349/acarologia/20184304

Bassini-Silva, R.; Jacinavicius, F. C.; Pinter, A.; Fournier, G. F. S. R.; Lugarini, C.; Ferreira, A.; Moreira-Lima, L.; Hingst-Zaher, E.; Welbourn, C.; Ochoa, R.; Barros-Battesti, D. M. (2019) Eutrombicula tinami (Oudemans, 1910) (Trombidiformes: Trombiculidae) in Brazil: a neglected ectoparasite of several animals including humans. Acarologia, 59: 412-423. doi: 10.24349/acarologia/20194343

Brennan, J. M.; Yunker, C. E. (1964) A new species of Euschoengastia of potential veterinary importance (Acarina: Trombiculidae). The Journal of Parasitology, 50: 311-312. https://www.ncbi.nlm.nih.gov/pubmed/14170772

Chung, L. H.; Wu, W. J.; Kuo, C. C.; Wang, H. C. (2015) A checklist of chigger mites (Acari: Trombiculidae and Leeuwenhokiidae) from Taiwan, with descriptions of three new species. Journal of Medical Entomology, 52(6): 1241-1253. doi: 10.1093/jme/tjv139

Faccini, J. L. H.; Santos, A. C. G.; Santos, S. B.; Jacinavicius, F. C.; Bassini-Silva, R.; Barros-Battesti D. M. (2017) Trombiculiasis in domestic goats and humans in the state of Maranhao, Brazil. Revista Brasileira De Parasitologia Veterinaria, 26: 104-109. doi: 10.1590/S1984-29612016088

Fain, A.; Le Net, J.-L. (2000) A new larval mite of the genus Straelensia Vercammen-Grandjean and Kolebinova, 1968 (Acari: Leeuwenhoekiidae) causing nodular dermatitis of dogs in France. International Journal of Acarology, 26(4): 339-345. doi: 10.1080/01647950008684208

Floch, H.; Abonnenc, E. (1941) Trombidides de la Guyane Française. Le “pou d’ agouti.” Archives de l’Institut Pasteur de la Guyane française et de l’Inini, 20: 1-22.

Giannoulopoulos, G. D.; Desilla, L. J. S.; Desilla, E. S.; Papadopoulos, I.; Saridomichelakis, M. N. (2012) First report of Neotrombicula autumnalis infestation in a cat and a dog from Corfu (Greece) and in a cat from Limassol (Cyprus). Vector-Borne Zoonotic Dis, 12: 1065-1067. doi: 10.1089/vbz.2012.1062

Gonçalves-Souza, T.; Giupponi, A. P.; Hernandes, F. A. (2014) A rare finding of mites (Arachnida: Acari: Leeuwenhoekiidae) parasitising a whip spider (Arachnida: Amblypygi: Charinidae). Folia Parasitologica, 61(2): 182-184. doi: 10.14411/fp.2014.016

Heyne, H.; Ueckermann, E. A.; Coetzee, L. (2001) First report of a parasitic mite Leptotrombidium (Hypotrombidium) subquadratum (Lawrence) (Acari: Trombiculidae: Trombiculinae), from dogs and children in the Bloemfontein area, South Africa. Journal of the South African Veterinary Association, 72(2): 105-106

Jacinavicius, F. C.; Bassini-Silva, R.; Mendonza-Roldan, J. A.; Pepato, A. R.; Ochoa, R.; Welbourn, C.; Barros-Battesti, D. M. (2018) A checklist of chiggers from Brazil, including new records (Acari: Trombidiformes: Trombiculidae and Leeuwenhoekiidae). ZooKeys, 743: 1-41. doi: 10.389/zookeys.743.22675

Jenkins, D. W. (1949) Trombiculid mites affecting man IV. Revision of Eutrombicula in the American Hemisphere. Annals of the Entomological Society of America, 42(3): 289-318. doi: 10.1093/aesa/42.3.289

Kaufmann, R.; Bourdeau, P.; Waldman, L.; Amiel, S.; Zur, G. (2015) Straelensiosis in two cats and ten dogs from Israel. Journal of Small Animal Practice, 56: 723-727. doi: 10.1111/jsap.12374

Lecru, L. A.; Combarros, D.; Castilla-Castaño, E.; Navarro, C.; Cadiergues, M. C. (2019) Treatment of harvest mite infestation in dogs using a permethrin 54.5% and fipronil 6.1% (Effitix®) topical spot-on formulation. Journal of Veterinary Science, 6(4): 100. doi: 10.3390/vetsci6040100

Mccullocher, N. (1946) Studies in the control of scrub typhus. The Medical Journal of Australia, 1: 717-738

Michener, C. D. (1946) Observations on the habits and life history of a chigger mite, Eutrombicula batatas (Acarina: Trombiculinae). Annals of the Entomological Society of America, 1: 101-118. doi: 10.1093/aesa/39.1.101

Rocha, C. F. D.; Cunha-Barros, M.; Menezes, V. A.; Vrcibradic, D.; Kiefer, M. C.; Fontes, A. F.; Sluys, M. V.; Galdino, C. A. B.; Maia-Carneiro, T. (2020) High prevalence and intensity of infestation of Eutrombicula alfreddugesi (Acarina: Trombiculidae) on Tropidurus torquatus (Squamata, Tropiduridae): effects of body size and on body condition across ten populations along the Brazilian coast. Biologia, 75: 2231-2237. doi: 10.2478/s11756-020-00476-0

Sampaio, R. T. B.; Bassini-Silva, R.; Reis, N. M. O. R.; Welbourn, C.; Ochoa, R.; Barros-Battesti, D. M.; Jacinavicius, F. C. (2020) Eutrombicula daemoni Bassini-Silva and Jacinavicius, 2018 (Trombidiformes: Trombiculidae) parasitizing a dog in Brazil. International Journal of Acarology, 46: 117-119. doi: 10.1080/01647954.2020.1718206

Shatrov, A. B.; Antonovskaia, A. A. (2021) Stylostome of the trombiculid mite larvae Neotrombicula talmiensis (Schluger, 1955) (Acariformes, Trombiculidae) feeding on two host species in the Russian Far East. Acarologia, 61(2): 412-431. doi: 10.24349/acarologia/20214442

Stekolnikov, A. A.; Waap, H.; Gomes, J.; Antunes, T. (2016) Chigger mites of the genus Ericotrombidium (Acariformes: Trombiculidae) attacking pets in Europe. Veterinary Parasitology, 221: 60-63. doi: 10.1016/j.vetpar.2016.03.009

Takahashi, M.; Urakami, H.; Nogami, S.; Kadosaka, T.; Misumi, H.; Matsumoto, I.; Misumi, M. (2004) Trombidiosis in cats caused by the bite of the larval trombiculid mite Helenicula miyagawai (Acari: Trombiculidae). Veterinary Record, 154(15): 471-472. doi: 10.1136/vr.154.15.471

Vercammen-Grandjean, P. H.; Brennan, J. M. (1957) Eight new chiggers from East Africa and a new genus, Trombigastia (Acarina: Trombiculidae). Annals of the Entomological Society of America, 50: 484-496.

Zhang, Z.-Q.; Fan, Q.-H.; Pešić, V.; Smit, H.; Bochkov, A. V.; Khaustov, A. A.; Baker, A.; Wohltmann, A.; Wen, T.; Amrine, J. W. et al. (2011) Order Trombidiformes Reuter 1909. In: Zhang ZQ (Ed.), Animal biodiversity: an outline of higher-level classification and survey of taxonomic richness. Zootaxa, 3148(1): 129-138. doi: 10.11646/zootaxa.3148.1.24




How to Cite

Santos-Rodrigues, R., Bassini-Silva, R., Huang-Bastos, M., Araujo, K. M. de Q., de Carvalho, F. C. G., Brêtas, G., & Jacinavicius, F. de C. (2021). A new case of trombiculiasis caused by Eutrombicula daemoni Bassini-Silva & Jacinavicius, 2018 (Trombidiformes: Trombiculidae) in a dog from Brazil. Entomological Communications, 3, ec03035. https://doi.org/10.37486/2675-1305.ec03035



Scientific Note


Most read articles by the same author(s)