Association of Myianoetus sp. (Acari: Histiostomatidae) with necrophagous fly Compsomyiops fulvicrura (Diptera: Calliphoridae), in the Prepuna ecoregion (Jujuy: Argentina)

The genus Myianoetus Oudemans (Acari: Histiostomatidae) is commonly associated with carrion, utilizing flies (Diptera) from various families as a means of dispersal through phoresy. The objective of this paper is to present a new association between Myianoetus sp. mites and Calliphoridae flies and discuss its relevance in forensic sciences. Samples were collected in 3 locations in the Prepuna ecoregion of Jujuy, Argentina. Specimens were captured using necrotraps baited with cow lung. Flies carrying phoretic mites were separated and identified to a specific level, while mites were counted and identified at the lowest possible taxonomic level. Compsomyiops fulvicrura (Robineau-Desvoidy) (Diptera: Calliphoridae) was the only species that presented attached mites, with an average intensity of 12.26 mites per fly. The mites carried by C. fulvicrura were identified as deutonymphs of Myianoetus sp., with a prevalence of 2.56% of infested flies. Significant differences in the abundance of flies with mites were observed between locations and seasons. This article represents the first contribution to knowledge on the specific association between Myianoetus sp. and C. fulvicrura. These findings in forensic ecology are relevant for their potential contribution and application in the development of more precise methods in specific forensic cases.