Dasypus pastasae ( Thomas, 1901 )
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publication ID |
https://doi.org/ 10.11646/zootaxa.4170.2.3 |
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publication LSID |
lsid:zoobank.org:pub:9E3AE604-3656-4B0A-B09A-C970200BF5F6 |
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DOI |
https://doi.org/10.5281/zenodo.6073909 |
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persistent identifier |
https://treatment.plazi.org/id/03F2AA4F-9743-9A15-99AE-FA50FF5F67E1 |
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treatment provided by |
Plazi |
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scientific name |
Dasypus pastasae ( Thomas, 1901 ) |
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Dasypus pastasae ( Thomas, 1901)
Tatu pastasae Thomas, 1901: 370 (original description)
Dasypus kappleri pastasae: Lönnberg, 1928 View in CoL (name combination) D [asypus]. k [appleri]. peruvianus Lönnberg, 1928:10
Holotype. BM 80.5.6.71 collected by Mr. Clarence Buckley ( Figure 9 View FIGURE 9 ).
Type locality. “ Sarayacu , upper Pastasa River ”, Pastaza, Ecuador.
Etymology. The name pastasae refers to the type locality.
Diagnosis. The main diagnostic external features of D. pastasae lying on the scales of the pelvic shield and tail rings. This species has the non-uniform scales of the pelvic shield in size and texture (rough), where the central ones are larger and standing up above the level of the peripherals that are smaller. Further, the posterior scales of the proximal rings on tail are flattened. Cranially, the lateral margin of palatine has a prominent but unswollen crest and the posterior end of palatine is straight (not concave).
Distribution. Dasypus pastasae is distributed from the foothills of the eastern Andes in Peru, Ecuador, Colombia, and Venezuela south of the Orinoco River into the western Brazilian Amazon, between the Madeira River and Branco River (Figure 10). Despite the absence of records from Bolivia, it is likely that D. pastasae also occurs in the extreme north of that country, on the left bank of Madre de Dios River. This species is sympatric with D. kappleri in eastern Venezuela.
Measures. Dasypus pastasae is the smallest species of the D. kappleri complex, on average smaller than the other species in all 24 cranial measures ( Table 4 View TABLE 4 ).
Remarks. Thomas (1901) pointed out two additional cranial differences between D. pastasae and D. kappleri . One is that the nuchal crest is more strongly developed in D. pastasae , surpassing the external occipital crest posteriorly. The second is that the jugal bones are broader in lateral view in D. pastasae , projecting further downwards. However, both traits exhibit substantial intraspecific variation and are unreliable for diagnosis. One pregnant female (EBRG 25559) with two fetuses was collected on 4 December 2005 from Ichum River, Salto Ichuno Espuma, Bolivar, Venezuela.
Specimens examined (locality numbers as in Figure 10). BRAZIL: 11 ( MPEG 47762 View Materials ). COLOMBIA: ( AMNH 136253 About AMNH , AMNH 136255 About AMNH ), 21 ( IAVH 6858 View Materials , ICN sn), 22 ( ICN 1621 View Materials , ICN 1622 View Materials ), 23 (ICN 11625), 24 ( AMNH 136251 About AMNH ). ECUADOR: 25 ( QCAZ 3370 View Materials , QCAZ 3376 View Materials ), 26 ( MEPN 7654 ), 27 ( MEPN 8496 , MEPN sn). PERU: 31 ( MUSM 697 ), 32 ( AMNH 98812 About AMNH ), 33 ( MUSM 23073 ), 34 ( AMNH 98464 About AMNH ), 35 ( AMNH 76574 About AMNH , AMNH 76573 About AMNH ), 36 ( MUSM 11081 ), 37 ( AMNH 268227 About AMNH , AMNH 268228 About AMNH ). VENEZUELA: 38 ( EBRG 3305 View Materials ), 42 ( AMNH 76933 About AMNH ), 43 ( MHNLS 3593 View Materials ), 44 ( EBRG 17486 View Materials ), 47 ( EBRG 2559 View Materials ), 48 ( MHNLS 608 View Materials ); and photos of the holotype (BM 80.5.6.71).
TABLE 4. Cranial measurements (in mm) of Dasypus kappleri complex. All measurements are given as the mean ± standard deviation; minimum – maximum (N).
| Measurements | Dasypus kappleri | Dasypus pastasae | Dasypus beniensis |
|---|---|---|---|
| GLS | 127.86±4.74; 111.11–134.8(24) | 121.14±5.18; 114.89–130.03 (16) | 131.30±3.77; 122.91–134.63 (8) |
| CB | 115.65±4.53; 100.29–123.94 (24) | 110.31±4.85; 103.37–119.89 (16) | 116.88±6.99; 100.09–121.33 (8) |
| APL | 26.04±2.01; 21.09–31.84 (28) | 23.71±2.8; 20.03–31.94 (20) | 25.44±1.21; 22.87–26.9 (8) |
| PL | 87.91±4; 75.77–95.48 (26) | 82.99±4.72; 76.04–91.23 (18) | 87.59±3.13; 82.24–90.8 (7) |
| ML | 53.48±4.83; 45.77–67.79 (25) | 48.04±3.6; 41.12–55.41 (18) | 52.33±2.31; 48.93–55.11 (8) |
| PIL | 25.81±2.22; 21.69–31.34 (25) | 24.83±2.89; 19.82–30.63 (18) | 25.86±1.29; 23.92–27.41 (7) |
| ICL | 7.25±0.98; 5.63–9.3 (26) | 7.58±1.09; 5.21–8.93 (22) | 11.08±1.46; 9.07–13.05 (8) |
| MT | 29.49±1.89; 24.94–33.51 (25) | 29±1.89; 23.83–33.06 (19) | 29.66±1.43; 27.47–31.67 (8) |
| NL | 43.11±2.41; 34.94–46.5 (27) | 42.94±3.14; 37.25–50.19 (19) | 46.51±2.14; 44.32–49.5 (8) |
| LL | 15.57±2.11; 10.29–19.14 (27) | 13.15±1.61; 9.86–16.5 (20) | 18.8±2.04; 15.30–21.14 (8) |
| RL | 81.66±3.72; 69–88.38 (28) | 76.16±4.25; 67.52–84.16 (20) | 85.18±3.46; 77.95–89.5 (8) |
| AB | 39.6±1.51; 35.97–41.71 (28) | 36.18±1.79; 32.34–38.23 (19) | 43.03±1.62; 40.68–45.52 (8) |
| TL | 2.79±0.32; 2.13–3.4 (25) | 2.57±0.3; 2.1–3.11 (18) | 3.08±0.34; 2.63–3.49 (7) |
| PB | 19.2±2.34; 11.33–21.74 (27) | 18.89±1.16; 16.71–20.62 (20) | 20.81±0.94; 19.49–21.91 (6) |
| PIB | 21.19±0.88; 19.35–22.91 (27) | 19.19±1; 17.35–21.5 (22) | 19.39±0.67; 18.55–20.72 (8) |
| PC | 27.47±0.94; 26.15–30.11 (27) | 25.31±1.19; 23.01–27.52 (19) | 29.75±1.79; 26.53–31.74 (8) |
| BB | 37.93±1.43; 35.33–41.26 (27) | 36.02±1.54; 33.06–38.5 (20) | 38.08±1.24; 35.58–39.25 (8) |
| ZB | 50.69±2.2; 42.61–53.53 (25) | 47.2±2.48; 41.9–51.56 (14) | 53.55±3.46; 48.14–58.05 (6) |
| MB | 33.88±1.28; 31.63–37.21 (24) | 32.84±1.28; 30.06–35.36 (17) | 34.05±1.32; 31.44–35.33 (7) |
| HJ | 9±1.12; 7.27– 12.15 (25) | 8.8±0.84; 7.1–10.21 (16) | 9.55±1.09; 8.51–11.52 (7) |
| MAL | 101.29±3.73; 86.9–106.44 (25) | 93.57±5.77; 80.32–102.08 (19) | 102.66±3.64; 95.43–106.07 (7) |
| AML | 24.01±2.13; 19.66–29.27 (27) | 21.09±1.84; 16.62–23.62 (19) | 23.19±1.51; 20.01–24.41 (7) |
| LMT | 31.6±1.81; 27.59–35.02 (27) | 30.05±1.75; 25.61–33.51 (19) | 31.88±0.95; 30.78–33.59 (7) |
| HM | 29.4±1.94; 25.1–32.57 (26) | 27.14±1.89; 23.37–30.34 (18) | 25.63±1.87; 23.55–28.83 (7) |
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