Helicops trivittatus (Gray, 1849)
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https://dx.doi.org/10.3897/BDJ.10.e69234 |
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persistent identifier |
https://treatment.plazi.org/id/8E0D2599-F4B3-55EB-B85B-2B35F7177580 |
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treatment provided by |
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scientific name |
Helicops trivittatus (Gray, 1849) |
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Helicops trivittatus (Gray, 1849)
Materials
Type status: Other material. Occurrence: catalogNumber: SMF 17798 View Materials ; recordedBy: Z.G. leg.; individualCount: 1; sex: female; Taxon: scientificName: Helicops trivittatus (Gray, 1849); Event: year: 1915; Record Level: institutionID: SMF Type status: Other material. Occurrence: catalogNumber: SMF 45434 View Materials ; recordedBy: K. Müller leg.; individualCount: 1; sex: male; Taxon: scientificName: Helicops trivittatus (Gray, 1849); Location : country: Brazil; stateProvince: Para; locality: Amazonas ; Event : year: 1953; Record Level : institutionID: SMF Type status: Other material. Occurrence: catalogNumber: ZSM 272/2017 ; recordedBy: L. Müller leg.; individualCount: 1; sex: female; Taxon: scientificName: Helicops trivittatus (Gray, 1849); Location : country: Brazil; stateProvince: Pará; locality: Insel Marajo , Cachoeira am mittleren Arary ; Event : year: 1910; Record Level : institutionID: ZSM Type status: Other material. Occurrence: catalogNumber: ZSM 273/2017 ; recordedBy: L. Müller leg.; individualCount: 1; sex: female; Taxon: scientificName: Helicops trivittatus (Gray, 1849); Location : country: Brazil; stateProvince: Pará; locality: Insel Marajo , Cachoeira am mittleren Arary ; Event : year: 1910; Record Level : institutionID: ZSM
Diagnosis
This species can be distinguished from all congeners by the unique colour pattern, namely a combination of five narrow light stripes on the dorsum and a light venter with black semi-lunar markings, which extend on to the tail (for information on references, see Suppl. material 3).
Distribution
Helicops trivittatus is present from the eastern part of the Brazilian Province Para to approximately its borders with Maranhao, Tocantins and northern Mato Grosso. There are no reports of this species from western Para (Fig. 3 f).
Morphology remark
The presence of intergenials seems to be a reliable identification character in all other species of this genus, whereas in H. trivittatus , this character shows considerable variation. Intergenials are sometimes present. In our dataset, there were two specimens with and two without intergenials. There is no obvious biogeographical pattern perceiveable (pers. Comm. Antonio Moraes-da-Silva).
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.