Tetratriophtydeus, Ueckermann & Grout, 2007

Ueckermann, Edward A. & Grout, Timothy G., 2007, Tydeoid mites (Acari: Tydeidae, Edbakerellidae, Iolinidae) occurring on Citrus in southern Africa, Journal of Natural History 41 (37 - 40), pp. 2351-2378 : 2356-2357

publication ID

https://doi.org/ 10.1080/00222930701589921

persistent identifier

https://treatment.plazi.org/id/464587D1-8B4B-FFD8-FE30-FAE8FED6FE34

treatment provided by

Carolina

scientific name

Tetratriophtydeus
status

gen. nov.

Genus Tetratriophtydeus gen. nov.

Type species. Triophtydeus myacanthus Ueckermann, 1988 (in Meyer and Ueckermann 1988).

Diagnosis

Adults. This genus is closely related to Pretriophtydeus Andre´, differing from the latter in the chaetotaxy of tibiae I–IV, namely 4-2-2-2 instead of 5-3-2-2, and in having five pairs of genital and aggenital setae instead of six pairs of genital and aggenital setae.

This genus can be defined as follows: dorsum of idiosoma with 14 pairs of setae (υi, υe, sci, sce, c 1–2, d, e, f 1–2, h 1–2 and ps 1–2) including a pair of trichobothria (sci); tarsus I with 12 setae and a solenidion; poroidotaxy: 4 (ia, im, ip, ih); genital organotaxy: 2-6-5-5 (eugenital (eu) ♀ - eu „ -genital (ge) ♀ -aggenital (ag) ♀ setae); solenidiotaxy: 2 (tarsi I and II); epimeral formula: 3-1-4-3 (ventral setae plus coxal setae); chaetotaxy of some leg segments: tarsi 12(ω)-6(ω)-5- 5, tibiae 4-2-2-2, genua 3-2-2-2, femora 5-4-3-2 +1 (telofemur two and basifemur one), and trochantera 1-1-1-0. Femur IV divided. Palp chaetotaxy (tarsus to trochanter) 5-2-2-0 .

Etymology

The prefix Tetra refers to the main distinguishing character of the genus, namely the four setae on tibia I.