Species Identification and Taxonomic Classification

Proof required

Submit a description of your target taxonomic group (the family, genus, or other taxon level being identified), the geographic scope of the survey, the key diagnostic characters you will use for identification (at minimum three characters per distinguishable group), and a reference list of the identification resources you will use (field guides, taxonomic keys, or online identification tools).

What gets checked

• Target group is specific enough for rigorous identification — not 'plants' but 'British grassland grasses' or 'UK Lepidoptera common species'; a group where more than 5–10 key species exist requires a more focused scope
• Diagnostic characters are named specifically — not 'shape' but 'leaf margin (serrate vs entire), petiole length, and number of leaflets' for a plant group
• Reference resources are appropriate for the taxonomic group — species-specific field guides or taxonomic keys for the target group; general nature guides without taxonomic keys are not sufficient for rigorous identification

Common mistakes

• Selecting a taxonomic group without appropriate identification resources — some groups require specialist keys that are difficult to access; confirm the identification resources are available before committing to a group
• Underestimating the difficulty of the target group — cryptic species, subspecific variation, and seasonal variation can make field identification unreliable without specialist training; select a group appropriate to your background

Resources

What a verifier looks for

• Ask the submitter to describe the three most important diagnostic characters for their target group and why those characters are diagnostic — tests morphological knowledge before any identifications.
• Ask what species in their target group are most likely to be confused with each other and what distinguishes them — tests awareness of look-alike species.
• Ask what the seasonal or condition-dependent variation is for their target group — many species look very different at different life stages or in different conditions.

Proof required

Submit a species list with at minimum 10 verified records showing for each: the taxon identified (to species level if possible, otherwise to lowest confident taxonomic level), the evidence used (photograph URL, record citation, or specimen notes with diagnostic characters), and the date and location. At least five identifications must be verified by a human expert (iNaturalist community confirmation, museum curator confirmation, or equivalent).

What gets checked

• Every identification is evidenced — not 'I saw a sparrow' but a photograph showing the diagnostic characters, or a community-verified iNaturalist observation
• AI-assisted identifications are verified — iNaturalist automatic ID or PlantNet suggestions are not accepted without checking against the diagnostic characters from M1
• Uncertain identifications are labelled appropriately — 'Quercus sp.' rather than forcing an incorrect species-level identification

Common mistakes

• Accepting AI identifications without verification — AI species identification tools are helpful but have significant error rates for similar species; each identification must be verified against the key characters
• Not recording the diagnostic characters observed — 'Identified as X' without naming which diagnostic characters were seen is not a taxonomic record

Resources

What a verifier looks for

• Ask the submitter to walk through one identification explaining exactly which diagnostic characters they observed — confirms the identification was genuinely based on morphological reasoning.
• Ask them to explain one case where they were uncertain and how they resolved it — taxonomic uncertainty handling is as important as correct identifications.
• Ask about the most difficult identification in the survey and what made it difficult — tests engagement with the real complexity of field identification.

Proof required

Submit your taxonomic survey report (1500–2500 words: introduction with the target group's ecological role and taxonomic context, methods including identification resources and evidence standards, annotated species list with verification status, discussion of the significance of notable records or identifications, and a note on identification confidence and limitations) plus a Q&A record showing specific challenges to identification methods or taxonomic reasoning and your responses. The reviewer must be named and their taxonomic or natural history expertise stated.

What gets checked

• Species list clearly distinguishes confidently identified species from tentative identifications — the report must be honest about identification certainty
• Discussion notes any records of conservation significance — even if no notable species were found, the discussion must address whether the survey area and effort were appropriate to detect them if present
• Q&A record shows at least two challenges to identification evidence or taxonomic reasoning and substantive responses

Common mistakes

• An annotated species list without interpretation — a list is not a report; the discussion must interpret what the species composition tells us about the site's ecological status or the surveyor's taxonomic competence
• A reviewer without specific taxonomic knowledge of the target group — general biologists may not be able to challenge identification evidence at the level of diagnostic characters

Resources

What a verifier looks for

• Ask the submitter to justify the most difficult or surprising identification in the survey — the most interesting records need the strongest evidence.
• Ask what species they expected to find but did not and what that absence might indicate — interpreting absences is as ecologically important as recording presences.
• Verify the reviewer has specific knowledge of the target taxonomic group — a plant ecologist is not an appropriate reviewer for invertebrate identifications.