Athyreacarus latus, 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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persistent identifier |
https://treatment.plazi.org/id/14654C1D-1C5C-A24C-B0D4-F9636D9982B3 |
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treatment provided by |
Plazi |
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scientific name |
Athyreacarus latus |
| status |
sp. nov. |
Athyreacarus latus sp. nov.
( Figs 38–42 View FIGURE 38 View FIGURE 39 View FIGURE 40 View FIGURE 41 View FIGURE 42 )
Description. Female ( Figs 38–42 View FIGURE 38 View FIGURE 39 View FIGURE 40 View FIGURE 41 View FIGURE 42 ). Body oval. Length of idiosoma 435 (415), width 305 (285).
Gnathosoma . Gnathosomal capsule, excluding palps, almost oval, length 62 (60), width 65 (64). Two pairs of barbed, blunt-ended cheliceral setae cha 29 (26) and chb 25 (19). Postpalpal setae (pp) 5 (5) needle-like. Setae m 11 (11) and n 57 (50) weakly barbed; setae m blunt-ended, n pointed. Setae dFe 13 (14) and dGe 31 (30) barbed; dFe blunt-ended, dGe pointed. Tibial claw small, slightly hooked with short basal projection.
Idiosomal dorsum ( Figs 38A View FIGURE 38 , 41A View FIGURE 41 , 42A, B View FIGURE 42 ). All dorsal shields with numerous large sparsely distributed dimples ( Figs 42A, B View FIGURE 42 ). Hysterosomal shields wide, completely covering hysterosoma. Prodorsal shield without lateral projections. Setae sc 1 and their alveoli absent. All dorsal setae weakly barbed. Setae c 2 and f pointed, other dorsal setae blunt-ended. Cupules and pore-like structures on hysterosomal tergites not evident. Pseudanal segment much shorter than tergite H. Lengths of dorsal setae: v 1 44 (32), v 2 13 (12), sc 2 155 (155), c 1 10 (18), c 2 165 (165), d 24 (21), e 14 (16), f 160 (160), h 1 135 (115), h 2 29 (28). Distances between setae: v 1 – v 1 53 (54), v 2 –v 2 85 (80), sc 2 –sc 2 130 (120), c 1 – c 1 135 (125), c 1 – c 2 75 (75), d–d 150 (135), e–e 165 (150), f–f 175 (165), h 1 – h 1 92 (82), h 1 – h 2 23 (20). Idiosomal venter ( Figs 38B View FIGURE 38 , 41B View FIGURE 41 , 42C, D View FIGURE 42 ). All ventral plates with numerous large dimples ( Fig. 42C, D View FIGURE 42 ). Setae 3 a smooth, other ventral setae weakly barbed. Setae 2 c, 4 c and ps 3 blunt-ended, other ventral setae pointed. Ap5 long, reaching beyond bases of setae 4 a. Aggenital plate with two pairs of aggenital setae. Anal opening ventral. Length of mid-sternal plate 70 (61), width 50 (46); ratio length/width 1.3–1.4. Lengths of ventral setae: 1 a 52 (51), 1 b 22 (18), 1 c 21 (21), 2 a 75 (53), 2 b 43 (41), 2 c 24 (26), 3 a 19 (18), 3 b 59 (51), 3 c 32 (31), 4 a 40 (39), 4 b 47/50 (48), 4 c 22 (21), ag 1 36 (31), ag 2 56 (48), ps 1 90/95 (93), ps 2 110 (110), ps 3 60 (43/50).
Legs ( Figs 39 View FIGURE 39 , 40 View FIGURE 40 ). Length of legs: I 155 (160), II 160 (150), III 180 (180), IV 215 (200). Leg I ( Fig. 39A View FIGURE 39 ): tarsal claw very thick; setae v’ of trochanter, d, v’ of femur, d, l’, v’, k of tibia, pl’, s, and pv” of tarsus smooth, other leg setae (except eupathidia) weakly barbed; setae v’ of trochanter, l’, l”, v’ of femur, d, v’ of genu, v’, k of tibia, and pv” of tarsus blunt-ended, other leg setae pointed; lengths of solenidia ω 1 16 (15), ω 2 12 (10), φ 1 12 (12), φ 2 12 (10); ω 1 digitiform, ω 2, φ 1 and φ 2 baculiform. Leg II ( Fig. 39B View FIGURE 39 ): solenidion ω 14 (13) digitiform, solenidion φ 10 (10) baculiform; all leg setae barbed; setae v’ of trochanter and l’ of femur, blunt-ended; other leg setae pointed. Leg III ( Fig. 40A View FIGURE 40 ) similar in shape and length to leg II: solenidion φ 10 (10) baculiform; all leg setae barbed; setae v’ of femur and l” of genu blunt-ended; other leg setae pointed. Leg IV ( Fig. 40B View FIGURE 40 ): solenidion φ 10 (10) baculiform; all leg setae barbed; setae v’ of femur, l” of genu, and p’ of tarsus blunt-ended, other leg setae pointed.
Type material. Female holotype, slide No. ZISP T-Ath-002, no locality data, on a beetle Athyreus cf. bifurcatus MacLeay. Paratype: 1 female, same data.
Type deposition. The holotype is deposited in the collection of the Zoological Institute of RAS, Saint Petersburg, Russia ; one paratype is deposited in the collection of the Tyumen State University Museum of Zoology , Tyumen, Russia .
Differential diagnosis. The new species is most similar to A. ovalis by the presence of two pairs of cheliceral setae, absence of cupules and pore-like structures on the hysterosomal tergites and thick apodemes 1. The new species differs from A. ovalis by the complete absence of setae sc 1 (vs alveoli of setae sc 1 present in A. ovalis ), very short and blunt-ended setae c 1 and d (vs very long and pointed in A. ovalis ), and presence of only two pairs of aggenital setae (vs three pairs in A. ovalis ).
Etymology. The name of new the species derives from Latin word “ latus ” meaning “ wide ” and refers to very wide body of a new species.
Remarks. According to Howden & Martínez (1977), Athyreus bifurcatus is distributed in Brazil (as far north as the state of Mato Grosso), Paraguay and northern Argentina (Misiones Province). The host specimen lacks any locality data but we think it originated from either Paraguay or south-eastern Brazil as did most of the other older specimens of Bolboceratinae in the ZIN collection.
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.