Insect Order Zoraptera
The Zoraptera are a very small order of
insects, there are about 30 known species. They are also small in size
being less than 3 mm long. They are hemimetabolous, have biting mouthparts,
very short, 1 segmented cerci, and 9 segmented antennae. They are generally
found under bark or in humus and leaf-litter. They are unsusual in that
each species comes in 2 different forms, one of which is 'alate' (has wings)
and the other is 'apterous', i.e. dosen't have wings. The apterous form
is the more common, generally white in colour and has no compound eyes
or ocelli, whereas the alate forms have both compound eyes and ocelli,
and are more pigmented. Though less than 3 mm long an alate Zorapteran
can have a total wingspan of about 7mm. Another interesting thing is that
like their relatives the Termites (Isoptera) they can voluntarily shed
their wings. Though little is known about the biology of Zorapterans it
is known that 2 forms of nymphs occurr that equate with the 2 different
life-forms. They are usually found in rotting timber and or sawdust, well
composted leaf-litter and Termites nests. They feed on fungal spores and
smaller arthropods. The name Zoraptera comes from the Greek words "zor"
meaning pure and "aptera" meaning wingless (they were named before the
winged forms were discovered.