Athyreacarus pusillus, Khaustov & Frolov, 2019
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publication ID |
https://doi.org/ 10.11646/zootaxa.4647.1.14 |
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publication LSID |
lsid:zoobank.org:pub:4AD08401-412E-4A7C-AAD4-3B524B8DBB8F |
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DOI |
https://doi.org/10.5281/zenodo.5674750 |
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persistent identifier |
https://treatment.plazi.org/id/14654C1D-1C60-A248-B0D4-F9516D9B826C |
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treatment provided by |
Plazi |
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scientific name |
Athyreacarus pusillus |
| status |
sp. nov. |
Athyreacarus pusillus sp. nov.
( Figs 33–37 View FIGURE 33 View FIGURE 34 View FIGURE 35 View FIGURE 36 View FIGURE 37 )
Description. Female ( Figs 33–37 View FIGURE 33 View FIGURE 34 View FIGURE 35 View FIGURE 36 View FIGURE 37 ). Body fusiform. Length of idiosoma 230 (240, 270), width 125 (130, 155).
Gnathosoma . Gnathosomal capsule, excluding palps, almost oval, length 44 (42, 45), width 46 (45, 53). One pair of barbed, blunt-ended cheliceral setae cha 20 (20, 21). Postpalpal setae (pp) 5 (4, 5) needle-like. Subcapitular setae m 11 (10, 12) and n 22 (24, 25) pointed and weakly barbed. Setae dFe 12 (13) and dGe 22 (20, 21) barbed and blunt-ended. Tibiotarsus dorsomedially with well developed rodlike eupathid. Tibial claw small, slightly hooked.
Idiosomal dorsum ( Figs 33A View FIGURE 33 , 36A View FIGURE 36 , 37A, B View FIGURE 37 ). All dorsal shields with numerous small sparsely distributed dimples ( Figs 37A, B View FIGURE 37 ). Hysterosomal shields almost completely covering hysterosoma and only lateral margins with soft cuticle. Prodorsal shield without lateral projections, only alveoli of setae sc 1 present. All dorsal setae blunt-ended and barbed. Cupules ia on tergite D, im on tergite EF, and ih on tergite H small, round. Pore-like structures on tergites C, D, and EF not evident. Cupules ip on tergite EF not evident. Cupules ih located dorsally, anterolaterally to bases of setae h 1. Pseudanal segment much shorter than tergite H. Lengths of dorsal setae: v 1 45 (45, 47), v 2 24 (23, 24), sc 2 72 (80, 81), c 1 26 (26, 29), c 2 69 (73, 87), d 80 (81, 94), e 21 (12, 17), f 96 (100, 105), h 1 61 (66, 72), h 2 21 (20–21). Distances between setae: v 1 –v 1 13 (15, 17), v 2 –v 2 37 (39, 42), sc 1 –sc 1 42 (45, 47), sc 2 –sc 2 38 (37, 42), c 1 – c 1 42 (42, 47), c 1 – c 2 27 (26, 32), d–d 46 (46, 54), e–e 44 (41, 47), f–f 46 (47, 49), h 1 – h 1 32 (34, 35), h 1 – h 2 11 (11).
Idiosomal venter ( Figs 33B View FIGURE 33 , 36B View FIGURE 36 , 37C, D View FIGURE 37 ). All ventral plates with numerous small dimples ( Figs 37C, D View FIGURE 37 ), dimples on aggenital and midsternal plates arranged slightly more densely than on other plates. All ventral and caudal setae weakly barbed and blunt-ended, except pointed ps 3. Ap1 slightly thickened, ap5 long, reaching beyond bases of setae 4 a. Aggenital plate with two pairs of aggenital setae. Anal opening subterminal. Length of mid-sternal plate 46 (44, 46), width 46 (43, 44); ratio length/width 1.0–1.1. Lengths of ventral setae: 1 a 17 (15, 18), 1 b 10 (11), 1 c 16 (14), 2 a 20 (20, 21), 2 b 15 (16), 2 c 10 (10, 11), 3 a 14 (14, 15), 3 b 16 (16, 17), 3 c 16 (15, 16), 4 a 16 (15, 17), 4 b 18/22 (19, 20), 4 c 15 (13, 16), ag 1 15 (12, 16), ag 2 16 (14, 16), ps 1 40 (45, 46), ps 2 35 (33, 42), ps 3 21 (21, 22).
Legs ( Figs 34 View FIGURE 34 , 35 View FIGURE 35 ). Length of legs: I 90 (85, 90), II 72 (75, 77), III 90 (86, 90), IV 105 (105, 110). Leg I ( Fig. 34A View FIGURE 34 ): setae v’ of trochanter, v’ of femur, k of tibia, and pv” of tarsus smooth, other leg setae (except eupathidia) weakly barbed; setae l’, v” of genu, d, l’, v” of tibia, (pl), s and pv’ of tarsus pointed, other leg setae blunt-ended; lengths of solenidia ω 1 12 (9, 12), ω 2 7 (8, 9), φ 1 9 (8, 11), φ 2 7 (6, 7); ω 1 and φ 1 digitiform, ω 2 and φ 2 clavate. Leg II ( Fig. 34B View FIGURE 34 ): solenidion ω 11 (12, 13) digitiform, solenidion φ 5 (4, 5) clavate; all leg setae barbed; setae v’ of trochanter, d, v’, l’ of femur, v’, l’, l” of genu, l’ of tibia, (tc) and pl” of tarsus blunt-ended, other leg setae pointed. Leg III ( Fig. 35A View FIGURE 35 ) similar in shape and length to leg II; solenidion φ 5 (4) clavate; all leg setae barbed; setae d, v ’, v ” of tibia pointed, other leg setae blunt-ended. Leg IV ( Fig. 35B View FIGURE 35 ): solenidion φ 3 (4) clavate: all leg setae barbed; seta v” of tibia pointed, other leg setae blunt-ended.
Type material. Female holotype, slide No. 1738.1, BRASIL, Distrito Federal, Brasilia, III.2001, N. Degallier leg., on a beetle A. brasilicus . Paratypes: 2 females, same data.
Type deposition. The holotype is deposited in the collection of UNESP—Universidade Estadual Paulista, Department of Zoology and Botany, 15054—000 São José do Rio Preto—SP, Brazil ; two paratypes are deposited in the collection of the Tyumen State University Museum of Zoology , Tyumen, Russia .
Differential diagnosis. See differential diagnosis for A. vazdemelloi .
Etymology. The name of the new species derives from the Latin word “ pusillus ” meaning “ tiny ” and refers to the very small body size of females of this species.
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.