Flat Mites of the World

Palpipalpus

Key characters

  • with the full complement of dorsal setae (Fig. 1)
  • e2 and f2 usually inserted in an almost marginal position (Fig. 1)
  • h2 not elongate
  • anterior margin of prodorsum with pair of rounded lobes forming a shallow median notch anterior to v2 (Fig. 1a)
  • ventral and genital plates not developed, membranous (Fig. 2)
  • anal plates membranous
  • 2 pairs ps setae inserted along median edge of anal plates (Fig. 2)
  • the expression of seta v' on trochanter II is delayed until the adult stage (normally expressed in the deutonymph)
  • with claw-like true claws
  • males with solenidia on palp and tarsi I-II enlarged, swollen (Fig. 3)

Similar taxa

Aegyptobia - with 3 pairs of ps setae; setae e2, f2 inserted in true submarginal position

Crossipalpus - seta f2 absent; without any anterior projections on prodorsum; palp tibia with one seta (two in Palpipalpus); genua I-IV 1-1-0-0 (2-2-0-0 in Palpipalpus)

Meyeraepalpus - with 3 pairs of ps setae; gnathosoma partially concealed beneath prodorsum; e2, f2 in true submarginal position; seta d absent on femur III

Phytoptipalpus - without any anterior projections on prodorsum; seta v' on trochanter II is expressed in the deutonymph

Number of species

One - P. hesperius

Authority

Beard & Seeman

Distribution

Australia

Hosts

Allocasuarina fraseriana, Allocasuarina sp. (Casuarinaceae)

Colour

red when alive

eggs red

Remarks

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

<em>Palpipalpus</em>

Fig. 1. Palpipalpus hesperius sp. nov. Beard & Seeman, adult female dorsum.

<em>Palpipalpus</em>

Fig. 2. Palpipalpus hesperius sp. nov. Beard & Seeman, adult female posterior venter.

<em>Palpipalpus</em>

Fig. 3. Palpipalpus hesperius sp. nov. Beard & Seeman, adult legs I (F= female leg I; M = leg I, note swollen solenidion).