Seira brasiliana

Identification to species level requires microscopic examination and comparison with the original description by Arlé (1939). The genus Seira is distinguished from other Entomobryidae by the presence of body scales; within Seira, S. brasiliana is distinguished by specific chaetotaxy patterns and scale morphology detailed in the original description. Differential diagnosis from other Neotropical Seira species, particularly S. domestica and S. purpurescens, depends on subtle differences in setal arrangement and coloration.

Body elongate and cylindrical, covered with scales—a diagnostic feature of the genus Seira. Coloration and detailed chaetotaxy (bristle arrangement) follow the general pattern of Neotropical Seira species, though specific diagnostic features for S. brasiliana require examination of type material.

Recorded from five Brazilian states: Mato Grosso do Sul (BR-MS), Paraíba (BR-PB), Rio de Janeiro (BR-RJ), Santa Catarina (BR-SC), and São Paulo (BR-SP). The species appears restricted to Brazil, though this may reflect limited sampling rather than true endemism.

As a soil-dwelling springtail, likely contributes to decomposition and nutrient cycling in leaf litter and soil habitats, though specific ecological functions have not been documented for this species.

• Seira domestica (Nicolet, 1841)Widespread synanthropic species with which S. brasiliana may co-occur; distinguished by specific chaetotaxy and coloration patterns.
• Seira purpurescens (Börner, 1906)Another Neotropical Seira species; requires microscopic examination to separate based on scale morphology and setal arrangement.

• Collembola
• Entomobryidae
• springtail
• Neotropical
• Brazil
• soil fauna
• decomposer

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy