Slender Springtails (Entomobryidae) - 73 Species, Identification & Facts

Entomobrya arula

"A unique littoral species of Entomobrya . So far only 3 specimens have been recorded from beach gravel in Corona del Mar, Orange Co, CA." ―Frans Janssens

Entomobrya bicolor

Identification: Note the uniform waxy yellowish-brownish colour on body except for a pale band on the first 2 (sometimes also on the last 2) abdominal segments. ( comment by Frans Janssens)

Entomobrya griseoolivata

Identification: from by Frans Janssens' comment: dark posterior segment margins • white scale-like patches at the anterior edge of the 4th abdominal segment (the longest one) • V-mark on the head just behind and in between the eye patches

Entomobrya katzi

Identification: "...typically pigmented with a W-shape at the anterior part of the 4th abdominal segment (in front of the the 2 parallel lines). In some specimens the inner part of the W-shape (the inverted V) is more faint. This is common in juvenil

Entomobrya nicoleti

Identification: Typical pattern = 2 bilateral spots at posterior part of 4th abdominal segment. This form has never been recorded from the USA. Therefore the cf. (=confer, 'like') in the name. US taxonomists consider such specimens as light colour fo

Entomobrya nivalis

Identification: "Note the characteristic dorsal U-shaped marking on the posterior part of the abdomen." ( comment by Frans Janssens) "...nice illustration of the complications of identification based on macrophotographs. The typical U-shaped pigment

Cotton Springtail

Entomobrya unostrigata

Identification: Note the typical fine middorsal line and the thick transversal band in the middle of its trunk.

Lepidocyrtus cyaneus

Identification: covered with scales as in Tomoceridae, but note the short antennae; 3rd antennal segment is a bit shorter than the second. --F. Janssens comments

Orchesella cincta

Identification: white band on body and basal part of antennae. The easiest character to distinguish celsa from cincta is the thin black middorsal line running from the metathoracic segment to the 3rd abdominal segment (present in celsa , absent in ci

Orchesella villosa

Identification: note the two typically subsequent pigment 'bows' on abdominal segments 2 & 3 One of the larger collembolans in the US

Willowsia nigromaculata

Identification: "Note the metallic iridescent body, indicating the presence of translucent scales. Scales + Entomobrya lookalike body form point to Willowsia . Given the black dorsal pigmentation on the abdomen (the markings clustered bilaterally in