Flat Mites of the World

Raoiella species 2A

Key characters

  • setae c1, d1, e1 obviously spatulate (Figs. 1, 2)
  • seta h1 longer than h2 (Fig. 2)
  • seta h2 obviously spatulate (Fig. 2)
  • seta f2 shorter than f3 (Fig. 2)
  • coxae III-IV nude
  • femur II with 3 setae (d, bv", v' present; l' absent)
  • genua I-II with 3 setae (d, l', l")
  • tarsus I with companion seta longer than solenidion (make sure fine tip is not broken, can appear subequal) (Fig. 3)
  • tarsus II with companion seta subequal in length to solenidion (make sure tip of companion seta is visible; can appear shorter if broken) (Figs. 4, 5)
  • dorsal setae on tibiae I-II setiform, with tapered tip (but not finely tapered) (Fig. 5)
  • palp tibiotarsus with one solenidion and one tapered to blunt eupathidium distally (Fig. 6), and one seta dorsally
  • setae ps1 and ps2 inserted adjacent to each other (Fig. 7)
  • male with short ps1 setae, 7-9 microns (Fig. 8)
  • male femur II and genua I-II same as female
  • larva unknown

Similar species

Raoiella species 2A is morphologically similar to Raoiella species 2B.

Raoiella species 2A: prodorsal setae v2 63-73, sc1 51-61, sc2 63-70; opisthosomal setae f2 29-43, h2 25-35; setae d on femora I-III and genu I with tapered tips.

Raoiella species 2B: prodorsal setae v2 55-65, sc1 32-42, sc2 48-60; opisthosomal setae f2 26-32, h2 26-36; setae d on femora I-III and genu I with broad blunt tips.


Australia (WA)


Eucalyptus sp. (Myrtaceae)


This species is currently being described by Beard et al.

This species was collected from an unidentified immature Eucalyptus tree, in the south west corner of Western Australia.

Grouped with Raoiella species 2B as species 2 in Dowling et al. (2012); listed as undescribed species in Ochoa et al. (2011).


Dowling et al. (2012); Ochoa et al. (2011)

<em>Raoiella</em> species 2A

Fig. 1. Raoiella species 2A female dorsum.

<em>Raoiella</em> species 2A

Fig. 2. Raoiella species 2A female posterior dorsum.

<em>Raoiella</em> species 2A

Fig. 3. Raoiella species 2A female leg I (arrows indicate solenidion and companion seta).

<em>Raoiella</em> species 2A

Fig. 4. Raoiella species 2A female leg II (sol = solenidion; cs = companion seta).

<em>Raoiella</em> species 2A

Fig. 5. Raoiella species 2A female leg I (sol = solenidion; cs = companion seta; d = dorsal seta on tibia).

<em>Raoiella</em> species 2A

Fig. 6. Raoiella species 2A female palps (s = solenidion; e = eupathidium).

<em>Raoiella</em> species 2A

Fig. 7. Raoiella species 2A female posterior venter.

<em>Raoiella</em> species 2A

Fig. 8. Raoiella species 2A male posterior venter (aed = aedeagus).