Cyperacarus, Beard, Jennifer J. & Ochoa, Ronald, 2011

Beard, Jennifer J. & Ochoa, Ronald, 2011, New flat mite genera (Acari: Trombidiformes: Tenuipalpidae) associated with Australian sedges (Cyperaceae), Zootaxa 2941, pp. 1-37: 19

publication ID

http://doi.org/ 10.5281/zenodo.204686

DOI

http://doi.org/10.5281/zenodo.5612528

persistent identifier

http://treatment.plazi.org/id/0A68182D-FF91-F875-FF39-FF46ECACFB55

treatment provided by

Plazi

scientific name

Cyperacarus
status

gen. nov.

Cyperacarus   gen. nov. Beard & Ochoa

Type species. Cyperacarus naomae Beard & Ochoa  

Diagnosis. Adult female. Body elongate (approximately 3 times longer than wide); anterior margin of propodosoma with three prominent projections—a single median projection without setae, and a pair of prominent lateral projections each bearing setae v 2. Dorsal setae sc 1, h 2 elongate, tapered. Dorsal lateral setae sc 1, c 3, d 3, e 3, f 2 inserted on prominent tubercles; setal pairs c 1 -c 1 and d 1 -d 1 not inserted on single tubercles. Dorsal setae v 2, sc 1, sc 2, c 1, c 3, d 1, d 3, e 3, f 2, h 1, h 2 present; setae f 3 absent. Most dorsal setae broad, with strong lateral barbs, finely pubescent on dorsal surface and smooth ventrally, except setae sc 1 elongate barbed; setae c 1 short; setae d 1, h 1 minute, barbed; h 2 with minute club. Venter finely plicate; setae 1 a, 1 b, 2 b, 2 c, 3 a, 3 b, 4 a 1, 4a2, 4b, ag, g 1, g 2, ps 1, ps 2 present. Setae 1 a, 1 b, 4 a 1-2 elongate, extremely fine distally. Palps 3 -segmented, with setal formula 0, 2, 0(2); palp tarsus with two eupathidia. Leg chaetotaxy: nude trochanters and genua (male with v’ on tr I); no additions from deutonymph to female (v’ tr I, l’ fe I, ω’ ta I – IV are added from deutonymph to male); female fe I with 3 setae (male fe I with 4 setae). Leg chaetotaxy in all stages almost identical to that of Gahniacarus   , except Cyperacarus   with nude trochanters in all stages and male adds one seta to fe I (l’) ( Table 1 View TABLE 1 ).

Immatures. Opisthosomal setal pair c 1, inserted on single central tubercle, is much longer in immature stages than in the adult. Larva with posterior opisthosomal setae d 1, e 3, h 1 minute, and setae f 2 short. Protonymph with posterior opisthosomal setae d 1, e 3, h 1 minute, and setae f 2 similar to other dorsal setae. Deutonymph with posterior opisthosomal setae d 1, h 1 minute, and setae e 3, f 2 similar to other dorsal setae. Leg chaetotaxy: no setae added to the larval complement on the femora, genua or tibiae during development; tr I – IV and ge I – IV are nude in all stages. The leg chaetotaxies of the larva and protonymph are identical to those found on Gahniacarus   gen. nov. ( Table 1 View TABLE 1 ).

Remarks. Cyperacarus   can be separated from Gahniacarus   gen. nov. by the absence of dorsal opisthosomal setae f 3 (present in Gahniacarus   ), and by the size of setae d 1 which is minute in Cyperacarus   , but similar in size to other dorsal setae in Gahniacarus   . The two new genera Gahniacarus   and Cyperacarus   both have dorsal opisthosomal setae c 1 present, dorsal opisthosomal setae e 1 absent and nude ge I-IV. In comparison, the two previously known tenuipalpid genera associated with Cyperaceae   in Australia possess the following characters: dorsal opisthosomal setae c 1 absent, dorsal opisthosomal setae e 1 present, ge I-IV Acaricis   2 - 2 - 1 -0, Prolixus   2 - 1 -0-0. See Table 2 View TABLE 2 for further morphological differences.

Etymology. This genus is named for the family of plants on which it was collected, Cyperaceae   .