Theriadania venusta, Khaustov & Whitaker, 2019
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publication ID |
https://doi.org/ 10.24349/acarologia/20194335 |
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publication LSID |
lsid:zoobank.org:pub:4CC238AE-261B-432A-901D-490635B60695 |
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persistent identifier |
https://treatment.plazi.org/id/038687DF-FF8F-317E-D2D4-8372705338AA |
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treatment provided by |
Carolina |
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scientific name |
Theriadania venusta |
| status |
sp. nov. |
Theriadania venusta sp. nov.
Zoobank: 728BAA7F-660C-455A-80A7-BA63F332DECA ( Figs 6–11 View Figure 6 View Figure 7 View Figure 8 View Figure 9 View Figure 10 View Figure 11 )
Description
Female ( Figs 6–11 View Figure 6 View Figure 7 View Figure 8 View Figure 9 View Figure 10 View Figure 11 ) — With the character states of the genus as described above. Length of idiosoma 235 (220–225), width 155 (125–135). Gnathosoma ( Figs 7A, B View Figure 7 ). Length of gnathosoma 26 (24–26), width 15 (14–15). Dorsal median apodeme absent. Cheliceral setae cha 17 (15–17) weakly barbed in basal part and pointed. Setae dFe located ventrolaterally, blunt-ended and distinctly shorter than dorsolateral pointed dGe. Subcapitular setae m 10 (10)
and pharyngeal pumps in ventral view, C – anterior part of prodorsum.
smooth and pointed. Php1 very small, smooth, distinctly separated from transversely striated subrectangular php2 and smooth oval php3, which is about three times shorter than php2 ( Fig. 7B View Figure 7 ). Accessory setigenous structure (ass) rod-shaped. Idiosomal dorsum ( Figs 6A View Figure 6 , 10A–C View Figure 10 ,
11A, B View Figure 11 ). All dorsal shields with numerous small round dimples ( Figs 10A–C View Figure 10 , 11A, B View Figure 11 ). Anterior part of prodorsum with distinct sculpture lines forming polygonal cells ( Figs 7C View Figure 7 , 11A View Figure 11 ). Tergite
C with three pairs of oval porous areas ( Fig 6A View Figure 6 ). All dorsal setae pointed and distinctly barbed. Setae v 2, e, h 1, h 2 distinctly lanceolate. Setae sc 2 and f narrowly lanceolate; other dorsal
setae long and slightly thickened. Trichobothria with long stem, clavate, sparsely barbed, with rounded apex. Cupules ia on tergite D situated laterally to bases of setae d; cupules ih on
tergite H situated anteriorly to bases of setae h 2. Lengths of dorsal setae: v 2 13 (13–16), sc 2
50 (49–51), c 1 95 (90–98), c 2 115 (115–125), d 80 (74–83), e 37 (35–42), f 41 (43–48), h 1
23 (23–26), h 2 25 (25–26). Distances between setae: v 2 –v 2 39 (39–40), sc 2 –sc 2 33 (33–34),
c 1 – c 1 10 (9–11), c 1 – c 2 39 (38–39), d–d 18 (16–18), e–f 18 (16–18), f –f 45 (47–48), h 1 – h 1 16 (16–17), h 1 – h 2 24 (24–25).
Idiosomal venter ( Figs 6B View Figure 6 , 10D–E View Figure 10 ). Ventral plates with numerous small dimples ( Figs 10D–F View Figure 10 ), dimples on anterior half of coxal fields II slightly larger than others ( Fig. 10D View Figure 10 ). Lateral plates lateral to legs II and IV and lateral parts of aggenital plate with weak longitudinal striation ( Fig. 10F View Figure 10 ). All ventral setae distinctly barbed and pointed. Posterior margin of aggenital plate straight. Setae 3 a, 3 b, 3 c located in transverse row. Lengths of ventral setae: a 1 41 (37–43), 1 b
25 (23–26), 2 a 32 (32–34), 2 b 47 (46–48), 3 a 48 (46–49), 3 b 60 (56–61), 3 c 35 (33–36), 4 a 75 (73–78), 4 b 85 (89–99), 4 c 66 (65–74), ps 1 13 (13–14), ps 2 12 (12–13), ps 3 14 (14–15).
Legs ( Figs 8 View Figure 8 , 9 View Figure 9 , 11C View Figure 11 ). Leg I ( Figs 8A View Figure 8 , 11C View Figure 11 ). Lengths of solenidia ω 1 11 (11), φ 1 9 (8–9),
φ 2 4 (4); solenidion ω 1 finger-shaped, solenidion φ 1 baculiform, solenidion φ 2 clavate. Setae v’
of trochanter and pl () of tarsus slightly thickened basally, pointed and barbed; other leg setae (except eupathidia and u) strongly barbed, flattened and widened with pointed tips. Leg II ( Fig. 8B View Figure 8 ). Solenidia ω 9 (9) and φ 4 (4) finger-shaped. Seta tc” smooth, other leg setae distinctly barbed. Setae tc” and u’ not thickened; seta v’ of trochanter slightly thickened; other leg setae distinctly thickened and flattened; seta d of tibia distinctly bifurcate; seta l” of genu fan-shaped. Leg III ( Fig. 9A View Figure 9 ). Solenidion φ 3 (3) weakly clavate. All leg setae pointed; seta tc” smooth, other leg setae distinctly barbed. Setae tc” and u’ not thickened, other leg setae distinctly thickened and flattened. Leg IV ( Fig. 9B View Figure 9 ). Solenidion φ 2 (2–3) weakly clavate. All leg setae distinctly barbed. Seta v” of tibia weakly blunt-ended; other leg setae pointed.
Male and larva unknown.
Type material — Holotype (female) and 3 paratypes (females): USA, Texas, Culberson County, on Merriam’s kangaroo rat, Dipodomys merriami , 19 June 1976 (J. Whitaker).
Type deposition — The holotype and 1 paratype are deposited in the United States National Museum , Washington, USA ; other paratypes are deposited in the mite collection of the Tyumen State University Museum of Zoology , Tyumen, Russia .
Etymology — The name of the new species is derived from Latin venustus meaning beautiful, and refers to the presence of many modified setae on idiosoma and legs.
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.