scale
Enable an agent to recognise an animal scale, assess its condition in biological context, and determine appropriate observation, handling or sampling.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise an animal scale, assess its condition in biological context, and determine appropriate observation, handling or sampling.
Interpreted here as a scale insect, a scale is a sap-feeding hemipteran of the group Coccomorpha, whose adult females are typically wingless and often sedentary, with many species producing protective wax or a scale-like covering.
It can be Document scale shape, surface and arrangement using calibrated images.; Compare a scale with references appropriate to its bearer and body location.; Map damaged or missing scales and monitor change over time.; Assess whether observed detachment is consistent with documented shedding or requires further investigation.; Evaluate whether sampling is justified and permissible, then preserve specimen identity and attachment context.; Assess whether scale markings support a proposed biological inference before using them to estimate age or growth..
Distinguishing features
Identify an integumentary structure borne by an animal or demonstrably detached from one; the word scale alone does not establish this sense.
Distinguish the scale from an organism living on the surface: an attached scale insect is not a scale of its host.
Use tissue origin, composition and attachment alongside shape to distinguish scales from superficially similar plates or appendages.
Record the animal group before applying a scale classification; similar-looking scales need not share developmental origin.
Distinguish an individual scale from a scale-covered skin patch, a shed skin fragment or an artificial replica.
Scope
+ Individual scales and their arrangement within a defined body region
+ Scale morphology, attachment and tissue composition
+ Development, growth, replacement and shedding in the relevant animal group
+ Condition, damage and relationships to surrounding integument
+ Attached and detached scales with recorded biological provenance
- Weighing instruments, measurement scales and musical scales
- Scale insects as organisms
- Whole-animal taxonomy, population dynamics and conservation assessments
- Feathers, hair, shells and other neighbouring integumentary structures
- Industrial scale deposits and manufactured scale-like coverings
Characteristics
- Bearer and anatomical location
- Host taxon or specimen identifier; body region; side; position where recoverable Identification and interpretation depend on which animal and body region produced the scale.
- Scale classification
- Named scale type with applicable animal group, diagnostic basis and classification source; unresolved Prevents applying a classification from one animal group to another.
- Tissue composition and origin
- Observed or documented tissue constituents; epidermal, dermal or combined contribution; unknown Separates structures that look alike but differ biologically and in response to handling.
- Dimensions and profile
- Length, width and thickness in mm or µm; curvature and measurement method Supports comparison while making orientation and measurement limitations explicit.
- Surface and margin morphology
- Observed ridges, grooves, projections, pigmentation and edge form; magnification recorded Provides diagnostic evidence and a baseline for detecting wear or alteration.
- Attachment and arrangement
- Attached, loose, detached or unknown; overlap, orientation and neighbouring-scale relationships Distinguishes natural organisation from displacement or damage.
- Growth or replacement context
- Developing, established, replacing, shedding, regenerated or unresolved, where applicable Prevents interpreting normal change as injury or assuming universal replacement behaviour.
- Integrity and surrounding condition
- Intact, worn, cracked, eroded, displaced or missing; adjacent tissue observations Supports condition assessment without diagnosing a cause from appearance alone.
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.scale-animal
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 9 layers · 16 findings · 24 questions.
Scale identity and boundaries Establish the anatomical sense, bearer and appropriate scale classification.
Scale is an ambiguous name, and animal scales encompass structures that cannot be identified reliably by silhouette alone.
Anatomical sense
Determine whether the observed item is an animal integumentary scale.
Integumentary membership
Recognition requires evidence connecting the item to an animal's integument rather than relying on its name or plate-like appearance.
- What evidence identifies this item as part of an animal's integument? definition
- Could it instead be a scale insect, another integumentary structure or a nonbiological deposit? boundary
Bearer-specific classification
Locate the scale within an explicitly identified animal group and anatomical region.
Classification with evidence
Scale type should be assigned using a relevant reference and observable diagnostic features, with uncertainty retained.
- Which animal taxon and body region produced this scale, and how securely are they known? provenance
- Which diagnostic features and reference support the proposed scale type? definition
Scale construction and array Describe the scale's material structure, geometry and organisation on the body.
An isolated outline omits the tissue and attachment relationships needed to interpret how the scale functions.
Tissue and geometry
Characterise composition, dimensions and diagnostic surface features.
Material and morphology
Record measured form separately from inferred tissue composition or developmental origin.
- What are the scale's dimensions, profile and margin features under a stated orientation and magnification? measurement
- Which tissue constituents or developmental origins are demonstrated, and which are inferred from the bearer? provenance
Attachment and neighbours
Capture how the scale connects to underlying tissue and adjacent scales.
Scale array context
Overlap, orientation and attachment must be recorded in place where possible because detachment can erase these relationships.
- How is the scale attached, oriented and positioned relative to neighbouring scales? measurement
- Does the observation concern one scale, several overlapping scales or a fragment of scaled integument? boundary
Scale growth and condition Interpret development, replacement and physical changes using the bearer's biology.
Shedding, growth markings and scale loss have different meanings across animal groups and life stages.
Development and turnover
Relate observed scale state to documented growth and replacement processes.
Turnover and growth evidence
Do not assume that every scale is shed, regenerated or suitable for age estimation.
- What growth, shedding or replacement process is documented for this scale type and life stage? provenance
- If markings are used to infer age or growth, what validates that interpretation for this animal and sampling location? measurement
Damage and change
Separate observed disruption from hypotheses about its cause.
Integrity in context
Scale damage or absence should be assessed with surrounding tissue, distribution and change over time.
- Which scales are worn, fractured, displaced or missing, and what is the condition of adjacent tissue? measurement
- What evidence distinguishes expected turnover from injury, disease or handling damage? boundary
Scale observation and sampling Support observation and specimen handling while preserving biological context.
Removing or preparing a scale can affect the bearer and destroy features needed for later interpretation.
In-place observation
Choose observations that answer the question while retaining attachment and arrangement evidence.
Observation before removal
Document the scale in context and assess whether removal is necessary for the intended analysis.
- Can calibrated imaging of the attached scale answer the identification or condition question? action
- If removal is proposed, what bearer-specific handling requirements, permissions and potential tissue effects apply? action
Detached scale evidence
Maintain provenance and record preparation effects on detached material.
Specimen context and alteration
A detached scale needs collection and preparation records to support reliable comparisons or biological inferences.
- Is the bearer, anatomical location, collection date and mode of detachment known? provenance
- Could cleaning, drying, preservation or mounting have changed dimensions, pigmentation or surface markings? measurement
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- The sense is unrecorded; the organism context supports the scale-insect interpretation, but the registry entity should be checked before adopting it.
- Coccoidea also appears in classifications of scale insects; verify the intended taxonomic treatment and scope.
- No species is specified, so a binomial, authority, native range, conservation assessment or exact database identifier cannot be assigned.
- Which of these check these first hold for the sense of scale this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Armored scales (Diaspididae)
- Soft scales (Coccidae)
- Mealybugs (Pseudococcidae)
- Which of these kinds and varieties hold for the sense of scale this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Zoological scientific nomenclature - Genus species, with author and year - Identifies an individual species; 'scale' is a common group name, not a species binomial.
- GBIF taxon key - Numeric taxon identifier - Requires resolution to a particular taxon.
- NCBI Taxonomy ID - Numeric taxon identifier - Identifies a taxonomic database record rather than an individual insect or infestation.
- Which of these identifiers and schemes hold for the sense of scale this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- International Code of Zoological Nomenclature, issued by the International Commission on Zoological Nomenclature, governs scientific animal names.
- Which of these standards and regulation hold for the sense of scale this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Some species produce commercially harvested lac resin.
- Cochineal insects produce carminic acid used in red colorants.
- Species identification informs crop protection, nursery inspection and biological control.
- Which of these real-world use hold for the sense of scale this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Infestations can weaken host plants through sap feeding and cause yellowing, dieback or crop losses.
- Honeydew from many soft scales and mealybugs supports sooty mold; armored scales generally do not produce honeydew.
- Small size and concealed feeding sites can allow infestations to escape detection.
- Protective coverings and differences between life stages can reduce the effectiveness of poorly timed control measures.
- Movement of infested planting material can introduce species into new regions.
- Which of these failure modes and hazards hold for the sense of scale this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Species composition, host associations and native or introduced status vary geographically.
- Climate affects outdoor establishment and seasonal development; protected cultivation can support species outside their usual outdoor range.
- Which of these regional variation hold for the sense of scale this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Aphid - Aphids belong to a different hemipteran lineage and generally retain mobile, visibly legged adult females.
- Mealybug - Mealybugs are a subgroup of scale insects, usually recognizable by powdery or filamentous wax; they are not a separate equivalent of the whole group.
- Animal scale - A fish or reptile scale is an anatomical covering structure, not an insect.
- Weighing scale - A weighing scale is a measuring device, not a living organism.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of scale this model covers, and on what evidence? provenance
What the second pass must settle
- Does registry id vr.tr.scale-q188488 explicitly denote an animal integumentary scale, and should the batch's organism classification be corrected?
- Which animal groups and scale-like structures fall within the registry's intended boundary, particularly where terminology overlaps with scutes or denticles?
- Which existing Vercy model, if any, already owns this anatomical concept and should be linked instead of duplicated?
- Which authoritative references establish scale classifications and developmental relationships across the included animal groups?
- For which bearer taxa are scale-based age inference, normal replacement patterns and sampling methods sufficiently validated to support agent decisions?