Flat Mites of the World

Raoiella eugeniae

Authority

(Mohanasundaram)

Key characters

  • setae c1, d1, e1, obviously spatulate (Figs. 1, 2)
  • seta h1 subequal in length to h2 (often inserted ventrally) (Fig. 3)
  • seta h2 spatulate, not tapered (Fig. 3)
  • seta f2 longer than f3 (Figs. 2, 3)
  • coxae III-IV with one seta each (3b, 4b)
  • femur II with 4 setae (d, l', bv", v')
  • genua I-II with 3 setae (d, l', l")
  • tarsus I with companion seta obviously longer than solenidion, finely tapered (Fig. 4)
  • tarsus II with companion seta shorter than solenidion (sometimes subequal in length) (Fig. 5)
  • dorsal seta on tibiae I with a spatulate tip (Fig. 4)
  • dorsal seta on tibiae II weakly spatulate or with broad blunt tip (Fig. 6)
  • palp tibiotarsus with one solenidion and one forked eupathidium distally (Fig. 7), and one seta dorsally
  • setae ps1 and ps2 inserted adjacent to each other (Figs. 3, 8)
  • male with short ps1 setae, 11-13 microns
  • male femur II and genua I-II same as female
  • larva unknown

Similar species

Raoiella eugeniae is similar morphologically to Raoiella macfarlanei.

Raoiella eugeniae: opisthosomal setae f2 40-56; setae f3 22-33; setae d on femora I-II are subequal in length to setae d on genua I-II; palp eupathidium clearly forked distally.

Raoiella macfarlanei: opisthosomal setae f2 68-79; setae f3 31-33; setae d on femora I-II are longer than setae d on genua I-II; palp eupathidium not forked distally.

Distribution

India

Hosts

Syzygium sp. (Myrtaceae) (originally listed as Eugenia sp., Myrtaceae)

Remarks

This species is currently being redescribed by Beard et al.

The Torre-Santana et al. (2010) synonymy of R. eugeniae with R. indica is not accepted as it is clearly based on a misunderstanding of the findings of Dowling et al. (2008).

References

Beard et al. (in prep.); *Mohanasundaram (1996)

* - original description

<em>Raoiella eugeniae</em>

Fig. 1. Raoiella eugeniae adult female dorsum.

<em>Raoiella eugeniae</em>

Fig. 2. Raoiella eugeniae adult female dorsum.

<em>Raoiella eugeniae</em>

Fig. 3. Raoiella eugeniae adult female posterior venter (genital region).

<em>Raoiella eugeniae</em>

Fig. 4. Raoiella eugeniae adult female leg I (s = solenidion; cs = companion seta; d = dorsal seta on tibia).

<em>Raoiella eugeniae</em>

Fig. 5. Raoiella eugeniae adult female leg II (s = solenidion; cs = companion seta).

<em>Raoiella eugeniae</em>

Fig. 6. Raoiella eugeniae adult female leg II (arrow indicates dorsal seta on tibia).

<em>Raoiella eugeniae</em>

Fig. 7. Raoiella eugeniae adult female palp (arrow indicates forked eupathidium).

<em>Raoiella eugeniae</em>

Fig. 8. Raoiella eugeniae adult female posterior venter (genital region).