The tetraspores may arise by the simultaneous division of the contents of a sporangium, when they are arranged tetrahedrally, or they may arise by two successive divisions, in which case the arrangement may be zonate when the spores are in a row, or cruciate when the second divisions are at right angles to the first, or tetrahedral when the second divisions are at right angles to the first and also to one another. [Please select]
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Cruciato-complicatus: folded crosswise: incumbent wings when the inner margins overlap; not well distinguished from cruciate. [Please select]
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Cruciate: shaped like a cross; applied to wings when the inner margins lie one over the other; or to incumbent wings that overlie only at the apex: in Diptera, applied to bristles when they cross in direction. [Please select]
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