Sminthurimorph Collembola
In some taxa (e.g. Sminthuridae) the thoracic and abdominal segments are fused with adjacent segments to produce a short, globose body form. External segmentation is not evident. The antennae are well developed and a narrow “ neck” is present between the head and thorax. The furcula is well developed and these are active animals. Globular collembolans are characteristic of grassy vegetation and open habitats and are tolerant of desiccation. Sminthurus and Dicyrtoma are examples.