Flat Mites of the World

Dolichotetranychus

Key characters

  • d2, e1, e2, f2 absent (Figs. 3, 4, 5)
  • h2 not extremely elongate
  • body distinctly longer than wide (Figs. 1, 2, 3)
  • anterior margin of prodorsum without notch or projection (Figs. 6, 7)
  • ventral, genital and anal plates not developed, membranous (Figs. 8, 9)
  • 1-2 pairs ps setae (Fig. 9)
  • 3 segmented palp (Fig. 10)
  • nude genua III-IV
  • true claws uncinate or pad-like
  • males with distinctly shaped posterior opisthosoma (Fig. 2)
  • usually with distinct "granular" cuticle (Fig. 1)

Similar taxa

Afronychus - c2 absent (present in A. mulibrinus); e1 present (absent in A. cliffortiae); e2, f2 present

Number of species

approx. 23

Authority

Sayed

Distribution

World wide, with most species recorded from Nearctic region (8 spp.) and Oriental (5 spp.).

Countries include: Australia, Egypt, India, Indonesia, Iraq, New Zealand, South Africa, Sri Lanka, USA.

Hosts

Relatively few families, mostly monocots. By far the most common host family is Poaceae, followed by Bromeliaceae and Asteraceae.

Colour

  • red to orange when alive
  • eggs lemon to orange
<em>Dolichotetranychus</em>

Fig. 1. Dolichotetranychus sp. female dorsum and venter.

<em>Dolichotetranychus</em>

Fig. 2. Dolichotetranychus adult female (left) and male (right) dorsum (images: Philip Johnson, USDA-APHIS-PPQ).

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Fig. 3. Dolichotetranychus floridanus female dorsum (after Baker 1956).

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Fig. 4. Dolichotetranychus sp. female dorsum, posterior opisthosoma.

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Fig. 5. Dolichotetranychus sp. female dorsum, posterior opisthosoma.

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Fig. 6. Dolichotetranychus floridanus female dorsum.

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Fig. 7. Dolichotetranychus sp. female prodorsum, without projections or notches.

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Fig. 8. Dolichotetranychus floridanus female venter.

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Fig. 9. Dolichotetranychus female posterior venter, indicating genital region.

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Fig. 10. Dolichotetranychus floridanus female, 3 segmented palps (indicated by arrow).