Entomobryomorpha

Definition

One of the three principal orders of springtails (Collembola), comprising elongate-bodied forms with well-developed furcula and typically reduced or absent eyes. Members are distinguished from the globular-bodied Symphypleona and the compact Poduromorpha by their cylindrical shape and often larger size. The group was formerly classified as a superfamily (Entomobryoidea).

Etymology

From Greek entomon (insect) + bryein (to swell, teem) + morphe (form), referring to the insect-like, prolific nature of these springtails.

Example

The slender springtail Entomobrya nivalis, a common Entomobryomorpha found on snow and vegetation, demonstrates the typical elongate body plan and long antennae characteristic of this order.

Synonyms

• Entomobryoidea

Related Terms

• Collembola
• Poduromorpha
• Symphypleona
• Furcula
• hexapod

Usage Notes

The rank of this group has shifted historically: treated as a superfamily in older literature but now widely accepted as an order within Collembola. When discussing springtail diversity, the three orders (Entomobryomorpha, Poduromorpha, Symphypleona) provide the primary morphological framework. Not all members are elongate; some families (e.g., Isotomidae) show considerable body shape variation.