Erythrolamprus aenigma ENTIAUSPE-NETO, ABEGG, KOCH, NUÑEZ, AZEVEDO, MORAES, TIUTENKO, BIALVES & LOEBMANN, 2021
Can you confirm these amateur observations of Erythrolamprus aenigma?
Erythrolamprus aenigma
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Savannah Racer Snake P: Corredeira de Savana S: Guarda-camino de Sabana |
| Synonym | Erythrolamprus aenigma ENTIAUSPE-NETO, ABEGG, KOCH, NUÑEZ, AZEVEDO, MORAES, TIUTENKO, BIALVES & LOEBMANN 2021 Erythrolamprus poecilogyrus schotti – ENTIAUSPE-NETO et al. 2016: 61 (part.) Erythrolamprus poecilogyrus – AZARAK & FARIAS 2017: 45 (non WIED-NEUWIED) |
| Distribution | Brazil (Roraima), Guyana (Kuruwini), Venezuela (Bolívar), Colombia Type locality: Boa Vista (2°49’12” N, 60°40’19” W, 90 m a.s.l.), Roraima state, Brazil. |
| Reproduction | |
| Types | Holotype: IBSP 90722, Adult female (Figs 3–4), col. M. Duarte, F. L. Franco, R. Feltran and W. Azevedo on 03 March 2019. Paratypes: INPA-H 34377, Adult female, col. P. Azarak in 2012, from Rorainópolis (0°50’30” N, 60°40’48” W, 200 m a.s.l.), Roraima, Brazil; adult female (CHFURG 5068), col. D. Loebmann in 2016, from Boa Vista (2°49’12” N, 60°40’19” W, 90 m a.s.l.), Roraima, Brazil; adult female (IBSP 90743), col. M. Duarte, F. L. Franco and W. Azevedo in 2019, dissected head, from Boa Vista (2°49’12” N, 60°40’19” W, 90 m a.s.l.), Roraima, Brazil; adult female (IBSP 90727, Fig. 5E), col. M. Duarte, F. L. Franco and W. Azevedo in 2019, dissected head, from Boa Vista (2°49’12” N, 60°40’19” W, 90 m a.s.l.), Roraima, Brazil; juvenile female (IBSP 90660), col. M. Duarte, F. L. Franco and W. Azevedo in 2019, from Boa Vista (2°49’12” N, 60°40’19” W, 90 m a.s.l.), Roraima, Brazil; juvenile female (AMNH-R 60803), from Kuyuwini (2o12’30” N, 58o28’30” W), Guyana. Referred specimens: Unsexed adult (MTR 20581), from Fazenda Salvamento, Boa Vista (2°49’12” N, 60°40’19” W, 90 m a.s.l.), Roraima, Brazil; unsexed adult (MTR 20551) from Estação Ecológica Maracá, Amajari (3°39’07” N, 61°22’15” W, 100 m a.s.l.), Roraima, Brazil; unsexed adult (MTR 20546) from Estação Ecológica Maracá, Ama- jari (3°39’07” N, 61°22’15” W, 100 m a.s.l.), Roraima, Bra- zil; unsexed adult (MZUSP 10389, field tag LJV 2570), col. L.J. Vitt, from Novo Brasil, Boa Vista (2°49’12” N, 60°40’19” W, 90 m a.s.l.), Roraima, Brazil; unsexed adult (CVULA, voucher unknown, photographic voucher), col. C.B. Amorós, reportedly lost, from “Barinitas” (un- known locality), Bolívar, Venezuela; unsexed adult (CVU- LA, voucher unknown, photographic voucher), col. C.B. Amorós, reportedly lost, from Santa Elena de Uairen (4o36’8” N, 61o06’36” W, 900 m a.s.l.), Bolívar, Venezuela. |
| Diagnosis | Diagnosis: The new species is assigned to Erythrolamprus based on molecular evidence, considering that until now, no unambiguous morphological synapomorphy is known for this genus [see Zaher et al. (2009) and Grazziotin et al. (2012)]. The new species can be differentiated from all other Erythrolamprus species by the following combination of characters: (1) 19/19/15 dorsal scales; (2) preocular present, contacting loreal, supraocular, 3rd and 4th supralabials; (3) loreal present; (4) temporals 1+2 (1+1+2 in a single specimen); (5) supralabials eight, 4th–5th in contact with orbit; (6) infralabials 10/10 (11/10 in a single specimen), 1st–5th in contact with anterior chinshields; (7) ventrals 149–154 in females; (8) subcaudals 45–50 in females; (9) dorsal background coloration light grey, scales reticulated, with black margins and diffuse light blue lateral edges; (10) ventral and subcaudal coloration white with conspicuous diffuse and irregular small black blotches or dots; (11) black and white nuchal collars present, arrow-shaped, black nuchal collar over parietals, temporals and occipitals, up to one and a half scales wide; white nuchal collar over interoccipitals and dorsals, up to two scales wide, with outer black margins; (12) SVL 167–476 mm, TL 40–114 mm (Entiauspe-Neto et al. 2021). |
| Comment | |
| Etymology | The specific epithet, aenigma, is a Latin singular noun in nominative case, meaning a “mystery” or “riddle”, and refers to the noteworthy absence of males in our examined sample of specimens. |
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