Gamasiphoides rykei, Halliday, R. B., 2005
publication ID |
https://doi.org/ 10.5281/zenodo.170355 |
DOI |
https://doi.org/10.5281/zenodo.3503862 |
persistent identifier |
https://treatment.plazi.org/id/6D765421-BC71-8504-857F-B251137C7D8F |
treatment provided by |
Plazi |
scientific name |
Gamasiphoides rykei |
status |
sp. nov. |
Gamasiphoides rykei View in CoL sp. nov. ( Figs 37–42 View FIGURES 37 – 42 )
Specimens examined
Holotype female, Plettenberg Bay, site 30–13 (= 9413), 18.viii.1994, roadside picnic area, T. K. Qin coll., clover and weeds. Paratypes, 1 female, same data as holotype; 3 females, Wilderness, picnic area, site 3011 (= 9411), 17.viii.1994, clover and Oxalis ; 1 female, Humansdorp, site 30–14 (= 9413), 18.viii.1994, T. K. Qin coll., clover and weeds.
Description
Female
Dorsal idiosoma ( Fig. 37 View FIGURES 37 – 42 ).Dorsal shield length 512–542 µm, width 294–319 µm (n=6), anterior half smooth, posterior half with polygonal ornamentation; with 34 pairs of smooth pointed setae, all subequal in length.
Ventral idiosoma ( Fig. 38 View FIGURES 37 – 42 ). Tritosternum with bellshaped base and heavily pilose laciniae, flanked by a pair of granular presternal plates. Sternal shield with polygonal ornamentation throughout, with four pairs of smooth pointed setae and three pairs of pores. Epigynial shield trapezoidal, with indistinct ornamentation and a pair of smooth pointed setae, flanked by a pair of triangular endopodal plates. Ventrianal shield heartshaped, slightly wider than long (length 294–365 µm, width 336–386 µm, n=6), not fused to dorsal shield, with polygonal ornamentation throughout, with seven pairs of smooth pointed setae and a postanal seta. Exopodal plates split at level of coxa III; peritrematal plates extending from level of seta j2 to stigmata between coxae III and IV, fused with broad exopodal plates level with coxa IV; peritreme short, extending to anterior margin of coxae III; unsclerotised integument with a pair of small circular platelets level with posterior margin of coxa IV, and a small irregularlyshaped postanal plate.
Gnathosoma . Epistome with a prominent central point and a series of small lateral serrations at base of central point ( Fig. 39 View FIGURES 37 – 42 ). Fixed digit of chelicera with two large proximal teeth, 4 smaller distal teeth and a pilus dentilis; movable digit with two large proximal teeth and a small distal tooth; arthrodial brush very short ( Fig. 40 View FIGURES 37 – 42 ). Hypostomal groove with 7 rows of denticles, ca. 15 teeth per row; palp coxal seta, internal posterior hypostomal seta, external hypostomal seta, and anterior hypostomal seta subequal in length; corniculae short, heavy and robust; internal malae long and fine, external malae fringed ( Fig. 41 View FIGURES 37 – 42 ); palp tarsal claw 3tined; seta al 1 on palp genu bipectinate, seta al 2 spatulate ( Fig. 42 View FIGURES 37 – 42 ).
Legs. Chaetotaxy: Leg I: coxa 0 0/1 0/1 0; trochanter 1 1/1 0/2 1; femur 2 3/1 2/3 2; genu 2 3/2 3/1 2; tibia 2 3/2 3/2 2. Leg II: coxa 0 0/1 0/1 0; trochanter 1 0/1 0/2 1; femur 2 3/1 2/2 1; genu 2 3/1 2/1 2; tibia 2 2/1 2/1 2; tarsus 3 3/2 3/2 3 + mv, md. Leg III: coxa 0 0/ 1 0/1 0; trochanter 1 0/1 0/2 1; femur 1 2/1 2/0 0; genu 2 2/1 2/0 1; tibia 2 1/1 2/1 1; tarsus 3 3/2 3/2 3 + mv, md. Leg IV: coxa 0 0/1 0/0 0; trochanter 1 0/1 0/2 1; femur 1 2/1 2/0 0; genu 2 2/0 3/1 1; tibia 2 1/1 3/1 2;; tarsus 3 3/2 3/2 3 + mv, md. All leg setae fine, smooth pointed, except av 1, av 2 on tibia IV, which are longer and thicker than surrounding setae. All tarsi with a pair of claws and a rounded membranous pulvillus projecting slightly beyond the claws.
Etymology. This species is named in honour of South African acarologist Dr P. A. J. Ryke.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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