Katiannina macgillivrayi

Distinguished from other Katiannina species by subtle morphological features of the mouthparts and chaetotaxy (bristle arrangement), requiring microscopic examination. Separation from congeneric species such as Katiannina secunda and Katiannina saliens depends on detailed examination of the maxillary head and body setation patterns. The globular body shape distinguishes it from elongate springtails (Entomobryomorpha) in the same habitats.

Body globular and compact, typical of Symphypleona. Antennae relatively short. Furcula (springing organ) well-developed, folded beneath the abdomen when at rest. Coloration and specific body proportions require direct specimen examination.

Found in leaf litter and soil surface layers in forested environments. Specific microhabitat preferences not documented.

Recorded from North America with concentration in the northeastern United States, particularly Vermont. Distribution records also indicate presence in southern North America. Exact range boundaries undefined.

Activity timing not documented in available sources.

Life cycle details not documented in available sources. As with most Collembola, development likely involves direct development without metamorphosis, but specific stages and duration unknown.

Springing behavior using the furcula for escape locomotion, characteristic of the class. Other behavioral traits not documented.

Functions as a decomposer in soil and leaf litter food webs, contributing to nutrient cycling. Specific ecological interactions not documented.

No documented economic or medical significance. Occasionally encountered by naturalists and included in citizen science observations.

• Katiannina secundaCongeneric species with overlapping distribution; requires microscopic examination of mouthpart morphology for separation
• Katiannina saliensCongeneric species; distinguished by differences in body chaetotaxy and furcula proportions
• Sminthurinus spp.Similar globular body form in same habitats; distinguished by family-level characters of the mouthparts and antennae structure

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life