Key to Soil Arthropods
6
Key to soil arthropods 1) Three pairs of jointed legs, body divided into head, thorax and abdomen; antennae usually present, wings may be present……………………………………………….2 Four pairs of jointed legs, legs, head and thorax fused to form cephalothorax, without antennae……………………………………4 2) Wings present (Sub-class Pterygota)………………….3 Wings absent (Sub-class Apterygota)…………………..order Collembola (Springtails)
-
Upload
joharijalinas -
Category
Documents
-
view
145 -
download
0
Transcript of Key to Soil Arthropods
Key to soil arthropods
1) Three pairs of jointed legs, body divided into head, thorax and abdomen; antennae usually present, wings may be present……………………………………………….2Four pairs of jointed legs, legs, head and thorax fused to form cephalothorax, without antennae……………………………………4
2) Wings present (Sub-class Pterygota)………………….3 Wings absent (Sub-class Apterygota)…………………..order Collembola (Springtails)
3) One pair of wings, the second pair represented by halteres………….Order Diptera(two-winged flies)
Two pairs of wings, membranous and clear, abdomen usually attached to thorax by a distinct waist………………………………………Order Hymenoptera (ants, bees, wasps)
4) Body distinctly divided into two parts- a cephalothorax and an abdomen; spinning glands present…………………………………..Order Araneida (Spiders)
Cephalothorax and abdomen completely jointed; no spinning glands……………5
5) Legs usually very long and slender; abdomen segmented…………..Order Opiliones(Harvestmen)
Small or microscopic; legs short; abdomen Unsegmented…………….Order Acari (mites)
