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THE STRUCTURE OF THE SHELL AND RESPIRATORY SYSTEM OF THE EGGS OF HELOPELTIS AND RELATED GENERA (HEMIPTERA, MIRIDAE)
Author(s) -
Hinton H. E.
Publication year - 1962
Publication title -
proceedings of the zoological society of london
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0370-2774
DOI - 10.1111/j.1469-7998.1962.tb01841.x
Subject(s) - miridae , hemiptera , heteroptera , dorsum , biology , anatomy , zoology
Helopeltis and related genera of the subfamily Bryocorinae have two anterior respiratory horns, a long ventral one and a shorter dorsal one. Aeropyles or air tubes that open on the apical region of the horns provide a direct route for the exchange of gases between the ambient air and the intra‐chorionio air. The intra‐chorionic air forms a continuous layer that is held between vertical struts about 0′7μ long that separate a thin inner sheet of chorionin from the main body of the shell wall. Micropyles have previously been overlooked in the Miridae, but they are present in most if not all groups, as might be expected from the fact that fertilization occurs after ovulation. The form of the micropyles of Helopeltis, Parabryocoropsis , and Pseudonielia is quite unlike that of any other known Heteroptera.