- The
pygidium (pl.: pygidia) is the
posterior body part or
shield of
crustaceans and some
other arthropods, such as
insects and the
extinct trilobites....
-
based on the
pygidium being micropygous (
pygidium smaller than cephalon),
subisopygous (
pygidium sub
equal to cephalon),
isopygous (
pygidium equal in size...
-
Rhizosomichthys Bathophilus Miles, 1942
Bathypygidium Whitley, 1947 Of
Rhizosomichthys totae Pygidium totae Miles, 1942
Trichomycterus totae (Miles, 1942)...
-
elytron (wing cover), 5: tibia, 6: tarsus, 7: claws, 8: mouthparts, 9: prothorax, 10: mesothorax, 11: metathorax, 12:
abdominal sternites, 13:
pygidium....
-
Hatcheria macraei (Girard, 1855)
Synonyms Thrichomycterus macraei Girard, 1855
Pygidium Burmeisteri Berg, 1895
Hatcheria patagoniensis Eigenmann, 1909 Hatcheria...
-
organs such as antennae, a
thorax of
multiple similar segments (that in some
species allowed them to roll up into a ball), and a
pygidium, or tail section....
- semi-circular
headshield (cephalon), and a
circular to long oval
tailshield (
pygidium)
equal to or
longer than the cephalon,
without any body
segments in between...
-
depending on the specimen,
while the
pygidium has
either 11-13 or 20 segments. The
segments of the
thorax and
pygidium have
pairs of thin
filamentous limbs...
-
structures including Dufour's glands,
poison glands and
glands on the hindgut,
pygidium, ****, sternum, and hind tibia.
Pheromones also are exchanged, mixed...
- via
blood vessels. Prostomium Peristomium O Mouth Growth zone
Pygidium O **** In
addition to
Sipuncula and Echiura, also
lineages like Lobatocerebrum...
