Flat Mites of the World


Key characters

  • f2 absent (Figs. 1-3)
  • e2 inserted in lateral position (Figs. 1-3
  • h2 not elongate
  • gnathosoma concealed under prodorsum (gnathosoma is often extruded in strongly flattened specimens) (Figs. 1-3)
  • dorsal setae short, lanceolate
  • anterior margin of prodorsum smoothly rounded, without notch or projection (Fig. 4)
  • ventral, genital and anal plates membranous, not well developed (Fig. 5)
  • 2 pairs ps setae (Fig. 5)
  • 5 segmented palp

Similar taxa

Palpipalpus - seta f2 present; with pair of rounded projections on anterior margin of prodorsum; palp tibia with two setae (one in Crossipalpus); genua I-IV 2-2-0-0 (1-1-0-0 in Crossipalpus)

Number of species

Four - C. gersoni, C. muellerianae, C. raveni, C. verticillatae


Smiley, Frost and Gerson




Allocasuarina inophloia, A. luehmannii, A. muelleriana, A. verticillata (Casuarinaceae)


  • red when alive (Figs. 6-8)
  • eggs red


This is a recently redescribed genus (see Beard, Seeman & Bauchan (2014).


Fig. 1. Crossipalpus gersoni sp. nov. Beard & Seeman, female dorsum.


Fig. 2. Crossipalpus muellerianae female dorsum.


Fig. 3. Crossipalpus muellerianae deutonymph dorsum (image: Gary Bauchan, USDA-ARS).


Fig. 4. Crossipalpus raveni sp. nov. Beard & Seeman female anterior margin of prodorsum.


Fig. 5. Crossipalpus raveni sp. nov. Beard & Seeman female venter, with detail of genital region.


Fig. 6. Crossipalpus sp. female live.


Fig. 7. Crossipalpus sp. female live, dorsum.


Fig. 8. Crossipalpus sp. female live, venter.