Arachnida
E96842
Arachnida is a class of joint-legged invertebrate animals that includes spiders, scorpions, ticks, and mites, typically characterized by eight legs and a two-part body.
Aliases (1)
- Acari ×1
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
class
→
group of arthropods → taxonomic rank → |
| bodyPlan |
two-part body
→
|
| bodyRegion |
opisthosoma
→
prosoma → |
| circulatorySystem |
open circulatory system
→
|
| describedBy |
Jean-Baptiste Lamarck
→
|
| developmentType |
egg-laying
→
|
| distinguishedBy |
four pairs of walking legs in adults
→
lack of antennae and wings → |
| distinguishedFrom |
Insecta
→
|
| feedingType |
ectoparasitic (many ticks and mites)
→
mostly carnivorous → |
| fertilizationType |
internal fertilization
→
|
| habitat |
freshwater (some mites)
→
marine (some mites) → terrestrial → |
| hasAntennae |
false
→
|
| hasChelicerae |
true
→
|
| hasCommonName |
arachnids
→
|
| hasMandibles |
false
→
|
| hasPedipalps |
true
→
|
| hasWings |
false
→
|
| includesOrder |
Acari
→
Amblypygi → Araneae → Opiliones → Palpigradi → Pseudoscorpiones → Ricinulei → Schizomida → Scorpiones → Solifugae → Thelyphonida → Uropygi → |
| includesOrganismType |
mites
→
scorpions → spiders → ticks → |
| kingdom |
Animalia
→
|
| phylum |
Arthropoda
→
|
| reproduction |
sexual reproduction
→
|
| respiration |
book lungs
→
tracheae → |
| skeletonType |
exoskeleton
→
|
| subphylum |
Chelicerata
→
|
| symmetry |
bilateral symmetry
→
|
| taxonRank |
class
→
|
| typicalNumberOfLegs |
8
→
|
| yearDescribed |
1802
→
|
Referenced by (2)
| Subject (surface form when different) | Predicate |
|---|---|
|
Arthropoda
→
|
includes |
|
Arachnida
("Acari")
→
|
includesOrder |