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  • Naming Conventions for Conditional and Provisional Taxa

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BenchTaxonName

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OFRTable10
OFRTable10

 

sp. nr.

1) Means "species near"
2) Refers to a potentially undescribed species nearest to the species following the designation
3) Example: Hydropsyche sp. nr. simulans

cf.

1) Means "confer"
2) Refers to a species that closely matches the species following the designation but differs morphologically in some minor ways or the description in the literature is too vague or incomplete to be certain
3) Example: Hydropsyche cf. simulans

/
"slash"

1) Used to denote two or more taxa that are unresolvable or where only two taxa are known in a monophyletic group
2) Placed between the taxa in question
3) Species or Taxa names are ordered alphabetically
4) Example: Hydropsyche rossi/simulans, Centroptilum/Procloeon

sp. 1 or sp. A
genus A

1) Refers to provisional taxa reported in the literature where their specific identity remains unknown; also known as "operational taxonomic units" or "OTUs"

2) Provisional designation is reported exactly as it appears in the literature

3) A BenchTaxonNameReferenceCode is required to support this type of name
4) Example: Oecetis sp. A

sp. 1 ?

1) Genus names followed by "sp. 1 ?", "sp. 2 ?", "sp. 3 ?", etc. refer to unique species within the sample, but the species name (epithet) has not been determined.

  2) These designations are used for taxa that are rare in a sample and may not be identified with confidence. These names are to be used to determine the number of unique taxa within a sample. That is, the names distinguish taxa that are different within a sample, but not across samples. For example, Sample #1 contains Navicula sp. 1 ?, Navicula sp. 2 ? and Navicula sp. 3 ?, which are 3 undistinguished species within the sample. If Sample #2 also contains Navicula sp. 1 ?, this taxon may (or may not) be the same as in Sample #1.

3) NOTE that within a sample with only one unknown species in "Genus", Genus sp. is equivalent to Genus sp. 1 ?

group

1) Denotes a group of more than two closely related species that cannot be separated or organisms that can be reliably placed in a species group where determination to species is unsupported
2) If only two species in the group, then use "/" or slash designation
3) Is formally recognized in the literature
4) A BenchTaxonNameReferenceCode is highly desirable, but not required to support this type of name
4) Example: Hydropsyche scalaris group

complex

1) Denotes a species for which there may be considerable variation suggesting two or more cryptic species
2) Is formally recognized in the literature
3) A BenchTaxonNameReferenceCode is highly desirable, but not required to support this type of name
4) Example: Oecetis inconspicua complex

n. sp.

1) Means "new species"
2) Represents a species new to science that has been verified by a recognized authority or one that appears in the literature as such
3) A ReferenceCode is required to support this type of name
4) Example: Hydroptila n. sp.

Other conditional or provisional designations

1) Reported exactly as they appear in the reference from which they were obtained
2) A ReferenceCode is required to support this type of name
3) Example: Stilocladius? or Thienemannimyia group sp.