In the second stage, answering to the chrysalis stage of butterflies, they have six pairs of beautifully constructed natatory legs, a pair of magnificent
compound eyes, and extremely complex antennae; but they have a closed and imperfect mouth, and cannot feed: their function at this stage is, to search by their well-developed organs of sense, and to reach by their active powers of swimming, a proper place on which to become attached and to undergo their final metamorphosis.
Then stared, and they all stared, balefully, as if through a
compound eye, hoping to drive him off.
2a); intertorular distance 2.0x OD, about as long as torulorbital distance; torulus diameter 0.8x OD; ocellocular distance 2.1x greater than ocelloccipital distance; interocellar distance 1.5x OD;
compound eye 2.3x longer than wide; gena about as wide as
compound eye in profile; supraclypeal area, as seen in profile, on the same level with clypeus; facial fovea 5.0x longer than broad, 0.3x length of scape; scape 2.1x longer than broad; F1 1.6x longer than broad, about 1.6x longer than F2 and F3 individually.
The nostalgia turns strange, though, when rearranged in this fragmented form--as if the memory had been captured by the
compound eye of a bug.
You could say that the entire sea urchin is one single
compound eye", said John Kirwan, who conducted the study as a part of his doctoral thesis.
Reports on structural localization of AChE activity in the
compound eye of the honey bee are also presented by Kral and Schneider (1981).
Mantis shrimp Each clear outer facet of this
compound eye sends light to a single photosensitive structure.
Taxonomic Key to Copicerus Species 1.--Frons with 2 black transverse bands (or large dark patches), contrasted with tan or pale brown at frontoclypeal suture and between black bands (at lower margin of
compound eye); mesothorax tan medially, dark brown laterally Copicerus swartzi Stal 1'.--Frons variously brown speckled or dark dorsally and paler ventrally; mesothorax varied 2 2.--Prothorax often speckled brown and slightly to distinctly darker laterally; mesothorax bicolored, pale medially, darker laterally; frons variously speckled (sparsely to densely) C.
There is a protocerebrum, connecting to the
compound eye and other frontal filaments and organs, a deuto- and trito-cerebrum, which receive input from antennae and a ventral nerve cord ganglial network.
n of right antenna, IO, D and d: minimum distance between
compound eyes, antero-posterior diameter and transverse diameter of right
compound eye, respectively, on dorsal view of head, PO: d/D.