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21 October 2022 Identification of Forensically Important Carrion Beetles (Coleoptera: Staphilinidae) in China Based on COI and COII
Yifei Luo, Fanming Meng
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Abstract

Unambiguous and speedy necrophagous insect species identification is common task in forensic entomological study. Carrion beetles (Staphilinidae: Silphinae) belong to a small group of Coleoptera with less than 200 species worldwide. Some species are commonly found on dead body during forensic entomological investigation. Despite some species are hard to be categorized morphologically, present DNA-based technologies offer a potential identification strategy. Here, 37 carrion beetle specimens were collected from 15 locations throughout Chinese mainland. The cytochrome oxidase subunit I (COI) and II (COII) genes among all specimens were successfully sequenced, which provided reliable markers for precise identification. Mostly, the interspecific distance could clarify the capability of these genes for identifying included carrion beetle species. Exceptions existed between close species in Nicrophorus genus (Fabricius 1775). The sequenced gene's phylogenetic analysis revealed that all carrion beetle specimens were correctly classified into eight genera, and most have relatively high supporting values (>90%). Our data gives genetic diversity and a reference for global forensically important carrion beetle species identification, as well as a conductive significance for future application of Chinese carrion beetles in forensic entomology.

© The Author(s) 2022. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Yifei Luo and Fanming Meng "Identification of Forensically Important Carrion Beetles (Coleoptera: Staphilinidae) in China Based on COI and COII," Journal of Medical Entomology 60(1), 24-31, (21 October 2022). https://doi.org/10.1093/jme/tjac141
Received: 13 June 2022; Accepted: 26 August 2022; Published: 21 October 2022
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KEYWORDS
COI
COII
forensic entomology
genetic distance
Staphilinidae
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