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Fig. 1. Eutetranychus acaciae adult female paratype - detail of ambulacra with empodia absent; lateral true claws reduced and bearing a pair of tenent hairs.

Fig. 2. Eutetranychus acaciae adult female paratype - detail of peritreme (arrow indicates tip).

Fig. 3. Eutetranychus acaciae adult female paratype - dorsal habitus.

Fig. 4. Eutetranychus acaciae adult female paratype - dorsal habitus.

Fig. 5. Eutetranychus acaciae adult female paratype - dorsal habitus.

Fig. 6. Eutetranychus acaciae adult female paratype - detail of number of setae on coxae I-II (seta 2c present).

Fig. 7. Eutetranychus acaciae adult female paratype - detail of dorsal striae between setae c1 and d1.

Fig. 8. Eutetranychus acaciae adult female paratype - posterior dorsal opisthosoma.

Fig. 9. Eutetranychus acaciae adult female paratype - detail of pregential striae.

Fig. 10. Eutetranychus acaciae adult female paratype - detail of tarsus I with arrows indicating the pair of associated setae.

Fig. 11. Eutetranychus acaciae adult female paratype - detail of tarsus II with arrows indicating the pair of associated setae.

Fig. 12. Eutetranychus acaciae adult female paratype - detail of palps, with long spinneret.

Fig. 13. Eutetranychus acaciae adult female paratype - detail of pattern of prodorsal striae.

Fig. 14. Eutetranychus acaciae adult male paratype - detail of ambulacra with empodia absent; lateral true claws reduced and bearing a pair of tenent hairs.

Fig. 15. Eutetranychus acaciae adult male paratype - dorsal habitus.

Fig. 16. Eutetranychus acaciae adult male paratype - detail of peritreme (arrow indicates tip).

Fig. 17. Eutetranychus acaciae adult male paratype - detail of pattern of striae on prodorsum.

Fig. 18. Eutetranychus acaciae adult male paratype - detail of pattern of striae on prodorsum.

Fig. 19. Eutetranychus acaciae adult male paratype - dorsal habitus.

Fig. 20. Eutetranychus acaciae adult male paratype - detail of tarsus I with arrows indicating the pair of associated setae.

Fig. 21. Eutetranychus acaciae adult male paratype - posterior dorsum.

Fig. 22. Eutetranychus acaciae adult male paratype - detail of aedeagus (specimen not flat).

Material examined

types

Taxonomy

Subfamily Tetranychinae

Tribe Eurytetranychini

Distribution

*Australia: Tasmania

Taxonomy Changes

None

Diagnosis

Female

• empodium absent, with only lateral true claws reduced to short pads each with pair of tenent hairs (Fig. 1)
• peritreme with short recurved hook (Fig. 2)
• dorsal opisthosomal setae thick, rod-like, barbed, inserted on tubercles (Figs 3-5)
• coxae I and II each with two setae present (1b, 1c; 2b, 2c) (Fig. 6)
• dorsal opisthosoma with irregular transverse striae, swirling or broken (dotted) around some setal bases (Figs 7, 8)
• pregenital striae fine, strongly arching around genital flap (Fig. 9)
• tarsus I and II with associated setae (not duplex setae) - the tactile seta is (almost) as long as the solenidion, and the bases of the two setae are not coalesced (Figs 10, 11)
• tarsus I with the sockets of five tactile setae and one solenidion proximal to, and one solenidion overlapping, the sockets of the associated pair of setae
• tarsus II with the sockets of five tactile setae proximal to, and one eupathidium overlapping, the sockets of the associated pair of setae
• palp with spinneret four times as long as wide (Fig. 12)
• prodorsum with longitudinal striae with strong round lobes (Fig. 13)
• chaetotaxy for legs I-IV:
  • femora 6, 4, 3, 1 
  • genua 3, 3, 1, 1
  • tibiae 10(1+0), 5, 3, 5 
  • tarsi 16(3+3), 14(1+3), 11(1+0), 11(1+0) 
• pinkish yellow with dark marginal spots

Male

• empodia as in female (Fig. 14)
• dorsal setae as in female (Fig. 15)
• peritreme as in female with short recurved hook (Fig. 16)
• prodorsum as in female with longitudinal striae with strong lobes (lobes concentrated centrally) (Figs 17, 18)
• palp with spinneret short, slender
• leg I not much longer than body (Fig. 19)
• tarsus I and II as in female, with associated setae (Fig. 20)
• tarsus I with the sockets of six tactile setae and two solenidia proximal to, and one solenidion overlapping, the sockets of the associated pair of setae
• tarsus II with the sockets of five tactile setae and one-two solenidia proximal to, and one eupathidium overlapping, the sockets of the associated pair of setae
• chaetotaxy for legs I-IV (setal counts vary between and within individuals):
  • femora 8-10, 7, 4, 1 
  • genua 4, 4, 2, 2-3 
  • tibiae 13(4+0), 7(1-2+0), 5, 5 
  • tarsi 18-19(3-4+3), 16(2-3+3), 11(1+0), 11(1+0) 
• dorsal setae v2, sc1, sc2, c2, c3, d2, e2, f1 twice the length of the central dorsal setae (Figs 15, 21)
• aedeagus curved abruptly dorsad with broad stout shaft and short, stout dorsal projection with blunt tip (Fig. 22)

Hosts

*Acacia dealbata (Mimosaceae)

References

*Miller, L.W. (1966)  The tetranychoid mites of Tasmania.  Papers and Proceedings of the Royal Society of Tasmania 100: 53-76