DR SHAHID BIN ZEYA DEPARMENT OF ZOOLOGY AMU

DR. SHAHID BIN ZEYA DEPARMENT OF ZOOLOGY AMU, ALIGARH

Diplura Similar to silverfish and bristeltails. Having two caudal filaments. The diplurans body are not covered with scales and pale in colour. Body size less than 7 mm but some species may reach up to 50 -60 mm. Head and mouth parts- Entognathus condiotion; Mandibulate and withdrawn into head. Eyes: compound eyes and ocelli absent. Tarsi : 1 -segmented Antenna: Long many segmented.

Thorax: Prothorax reduced. Abdominal segments: 10; there are seven pairs of spiracles but absent in the family Campodidae. Abdominal appendages or styli: Present on 1 -7 segments of abdomen. Or 2 -7 segments of abdomen. Habitat: Damp places in the soil, under bark, stones etc. Divided into 05 families: Cerci 1 -segmented and forceps like Cerci many segmented and without forceps like • Japygidae • Campodeidae • Parajapygidae • Procampodeidae • Anajapygidae

Diplura

Japygidae: Cerci 1 -segmented and forceps like; 4 th 6 th antennal segments with trichobothria; labial palpi present. [eg. Heterojapyx sp. It is Australian species, its length reaches upto 50 mm, Holojapyx diversiungis]. Parajapygidae: Cerci 1 -segmented and forceps like; 4 th antennal segments without trichobothria; labial palpi lacking. [eg. Parajapyx sp].

Campodeidae: Cerci more than 08 segmented and not forceps like; cerci as long as antennae. [Campodea folsomi, about 34 species from North America]. Procampodeidae: Cerci 08 segmented and not forceps like and shorter than antenna; antennal trichobothria begenning on third segment. Styli present on 2 -7 abdominal segment[eg. Procampodea macswaini]. Anajapygidae: Cerci 08 segmented and not forceps like and shorter than antennae; antennal trichobothria begenning on fifth segment. Styli present on 1 -7 abdominal segment [eg. Anajapyx hermosa, Anajapyx vesiculosus about 34 species from North America].