Flat Mites of the World

Tenuipalpus pacificus

Authority

Baker

Species group characters

Teunipalpus caudatus species group

Characters

  • setae c2, d2, e2 absent (Figs. 1-4)
  • prodorsum mostly smooth with some weak areolae centrally; series of longitudinal-oblique folds laterally (Fig. 5)
  • dorsal opisthosoma mostly smooth, with a few wrinkles (Figs. 1, 2, 4)
  • setae f2, f3, h1 thick, curved (Figs. 3, 4)
  • ventral plate not developed; cuticle posterior to setae 4a1-2 with transverse striae forming an oval shape (Figs. 6, 7, 8)
  • genital plate weakly developed; cuticle between ag and g1-2 usually with broken striae forming patterns of short "dashes" (Figs. 6, 8), or cuticle with unbroken striae
  • ventral lateral cuticle anterior to coxae III and lateral to setae 3a1-2 with a distinct pebble-like pattern (Figs. 9-10)
  • ventral setae 3a and 4a are doubled = 3a1-2, 4a1-2 present (3a1 < 3a2; 4a1 = 4a2)
  • palp tarsus with a long straight solenidion and a short, curved tapered seta (Figs. 11, 12)
  • anterior margin of prodorsum with a forked projection, variable in shape and length - with two central projections flanked by two reduced projections/bumps (Fig. 13)
  • male similar to female (Fig. 14)

Distribution based on confirmed specimens

Australia, Barbados, Brazil, Japan, Malaysia, The Netherlands, Panama Canal Zone, Panama*, The Philippines, Puerto Rico, Thailand, USA (CA, FL), Venezuela

* - allotype and paratypes

Hosts based on confirmed specimens

Orchidaceae: Aerides sp., Calanthe sp., Cattleya sp., Cypripedium sp., Dendrobium sp., Epidendrum sp., Grammatophyllum sp., Oncidium sp., *Phalaenopsis stuartiana, Phalaenopsis sp., Saccolabium sp.

Davallia fejeensis, Platycerium sp. (Polypodiaceae)

* - allotype and paratypes

Remarks

This mite is red when alive.

References

*Baker (1945); Collyer (1973); De Leon (1965c); Denmark (2010); Ehara (1956); Hatzinikolis (1986a); Meyer (1979); Meyer (1993); Mitrofanov & Strunkova (1979); Pritchard (1949); Pritchard & Baker (1952); Pritchard & Baker (1958); Rimando (1962); Smiley & Gerson (1995)

* = original description

<em>Tenuipalpus pacificus</em>

Fig. 1. Tenuipalpus pacificus female dorsum (specimen on left = holotype).

<em>Tenuipalpus pacificus</em>

Fig. 2. Tenuipalpus pacificus female dorsum (images: Gary Bauchan, USDA-ECMU).

<em>Tenuipalpus pacificus</em>

Fig. 3. Tenuipalpus pacificus female posterior dorsum.

<em>Tenuipalpus pacificus</em>

Fig. 4. Tenuipalpus pacificus female posterior dorsum (image: Gary Bauchan, USDA-ECMU).

<em>Tenuipalpus pacificus</em>

Fig. 5. Tenuipalpus pacificus female prodorsum.

<em>Tenuipalpus pacificus</em>

Fig. 6. Tenuipalpus pacificus female posterior venter (top left = holotype).

<em>Tenuipalpus pacificus</em>

Fig. 7. Tenuipalpus pacificus female posterior venter (image: Gary Bauchan, USDA-ECMU).

<em>Tenuipalpus pacificus</em>

Fig. 8. Tenuipalpus pacificus female posterior venter (image: Gary Bauchan, USDA-ECMU).

<em>Tenuipalpus pacificus</em>

Fig. 9. Tenuipalpus pacificus female ventral lateral cuticle pattern, anterior to coxae III (left = holotype).

<em>Tenuipalpus pacificus</em>

Fig. 10. Tenuipalpus pacificus adult female ventral lateral cuticle (image: Gary Bauchan, USDA-ECMU).

<em>Tenuipalpus pacificus</em>

Fig. 11. Tenuipalpus pacificus female palp - arrow indicates short tapered seta.

<em>Tenuipalpus pacificus</em>

Fig. 12. Tenuipalpus pacificus female ventral hypostome, indicating palp (images: Gary Bauchan, USDA-ECMU).

<em>Tenuipalpus pacificus</em>

Fig. 13. Tenuipalpus pacificus female - anterior projection on anterior margin of prodorsum (top left = holotype) (arrows indicate central fork and lateral bump).

<em>Tenuipalpus pacificus</em>

Fig. 14. Tenuipalpus pacificus male dorsum, with hatched eggs (images: Gary Bauchan, USDA-ECMU).