AI Article Synopsis
- Handschin is the only member of its genus and tribe, characterized by unique dorsal chaetotaxy features, including fewer macrochaetae and a mix of fusiform scales and microchaetae.
- Despite previous studies, there is still limited understanding of chaetotaxy, particularly regarding tergal sensilla patterns and dorsal macrochaetae.
- A new Brazilian species is introduced, highlighting distinct differences in dorsal chaetotaxy compared to previously described species, but the study finds no strong evidence to classify Mastigocerini within Heteromurinae.
Article Abstract
Handschin, the sole member of its genus and the Mastigocerini tribe, exhibits unusual dorsal chaetotaxy compared to other Orchesellidae. This includes a reduction in dorsal macrochaetotaxy and a secondary covering of fusiform scales intermixed with ciliate microchaetae. Despite three redescriptions, chaetotaxy remains poorly understood, with no data on tergal sensilla patterns or dorsal macrochaetae homology. Here, the genus is revisited by describing a new Brazilian species a century after the original description of , based on morphological depiction combined with the use of DNA barcoding, Rodrigues, Souza & Bellini, The two species are differentiated by a few and unusual aspects of the dorsal chaetotaxy, especially scales distribution, and may be considered as pseudocryptic taxa. Our study of tergal sensilla formula, scales morphology, and distribution in reveals no clear morphological support for placing Mastigocerini within Heteromurinae.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11541098 | PMC |
| http://dx.doi.org/10.3897/zookeys.1217.132351 | DOI Listing |
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Article Synopsis
- Handschin is the only member of its genus and tribe, characterized by unique dorsal chaetotaxy features, including fewer macrochaetae and a mix of fusiform scales and microchaetae.
- Despite previous studies, there is still limited understanding of chaetotaxy, particularly regarding tergal sensilla patterns and dorsal macrochaetae.
- A new Brazilian species is introduced, highlighting distinct differences in dorsal chaetotaxy compared to previously described species, but the study finds no strong evidence to classify Mastigocerini within Heteromurinae.
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