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Phylum Arthropoda - Arthropods

Tortricidae: Eucosma agricolana? - Pelochrista argentialbana Spider OK 081513 - Leiobunum vittatum - male Wasp - Cryptopimpla quadrilineata - female Ancistrocerus antilope - Leptochilus Which Comma - Polygonia gracilis Fulvous Wood Cockroach - Parcoblatta fulvescens Vespid - Ancistrocerus waldenii - male and at least five species of ladybeetles - Adalia bipunctata
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Explanation of Names
'joint-legged'
Numbers
Worldwide. 20 classes, >160 orders, ~4,200 families, and ~1.2 million described species(1)
Size
ranges from the smallest mite (~0.1 mm) and the smallest insect (a Hymenopteran, Dicopomorpha echmepterygis at 0.14 mm), up to the Japanese Spider Crab (legspan to 3.8 m), but most 2‒25 mm
Identification
Three or more pairs of jointed legs (some mites have less, many insect larvae have none)
Body segmented, bilaterally symmetrical
Exoskeleton, usually tough, composed in part of chitin
Range
Cosmopolitan
Habitat
Almost every habitat
Print References
Giribet G., Edgecombe G.D. (2019) The phylogeny and evolutionary history of arthropods. Current Biology 29: R592‒602. (Full text)
Internet References
Works Cited
1.Catalogue of Life