The rear part of the 3 main divisions of an insects body.


Distinct lobe of the wing in certain flies.
Antennae The pair of sensory organs on the head.
Apical The tip or furthest part of any organ.
Aposematic Bright in colour to serves as a warning to predators.  More often than not red, yellow and black.


Without wings


A bristle-like outgrowth from the antennae.
Brachypterous Having short wings.
Calypter A flap-like outgrowth from the thorax of certain flies.


A pair of appendages which are usually very long that project from the tip of the abdomen in many insects.


The pollen basket on the hind leg of many bees.


The basal segment of an insects leg.


The shedding of skin or moulting process.
Elytron The hardened front wings of beetles that have been modified into covers for the hindwings.


Notched or toothed in the margin.
Eruciform  In relation to larva - Sub-cylindrical and with rear hind legs and having true thoracic legs.
Haltere Modified hindwing in true flies.
Hemimetabolous Developing by incomplete or gradual metamorphosis.  The immature stages are referred to as nymphs.
Holometabolous Developing by complete metamorphosis.  The immature stages are referred to as larvae.
Imago An adult insect.
Inquiline A species that lives in the nest, gall or home of another.
Mesothorax The 2nd thoracic segment.
Metamorphosis The name given to the life cycle and changes therein of an insect.
Metathorax The 3rd thoracic segment.
Nymph The immature stage of insects that undergo an incomplete metamorphosis.
Ocellus One of 3 simple eyes that occur in many insects.
Plumose Usually concerning the feathery branches located at the end of the antennae.
Probiscis Tube like mouthparts used for feeding.
Proleg A short, fleshy hind leg of a caterpillar.
Pronotum The dorsal cover of the first segment of the thorax.
Prothorax The 1st thoracic segment.
Puparium A barrel shaped pupal case of many flies.
Rostrum A beak or snout that is the piercing mouth parts of bugs and the elongated snout of weevils.
Scape The 1st antennal segment.
Scutellum Large plate (usually triangular) projecting back from the top of the mesothorax.
Spiracle The breathing holes of an insect located on the thorax and abdomen.
Spur A movable spine found on the legs.
Stridulation The act of producing sound by rubbing 2 parts of the body together.
Tarsus The foot of the insect.
Thorax The middle (2nd) major division of the insects body.
Tibia A part of the leg between the femur and tarsus
Trochanter A small part of the leg located between the coxa and the femur. 
Vertex Located at the top of the head between and behind the eyes.
Vestigal Poorly developed

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