A moth of a large family (Geometridae), distinguished by having twiglike caterpillars that move by arching and straightening the body. Also called geometer.
- There aren't very large numbers of macro moths, just a few noctuids, some small pyralids, and a handful of geometrids.
- Identification of most caterpillars was problematic so ecological groupings were used to create five subgroups: a bract-associated morphospecies, foliage-associated taxa, geometrids, and a lichen-associated morphospecies.
- All analysis is based on comparison of melanic and nonmelanic forms, without reference to genotype (the melanic forms in the two geometrids are dominant).
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