By Richard E. White
Over six hundred drawings and sixty five colour work painting consultant species of the 111 households of North American beetles. comprises info on amassing and holding beetles.
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Extra resources for Beetles : A Field Guide to the Beetles of North America
Future research will be required to eludidate the morphology, ecology, and behavior of the larvae of aquatic South American heteropterans, and until this is completed, knowledge of these early life stages will remain sketchy. Fig. 26 Belostoma oxyurum larval instars I through V with the antenna shown to the left of the head, the claw on the middle tarsus below or to the lower right of the hind leg, and the apical segments of the hind leg above and right of the abdomen (above, left to right): instars I, II, III, and (below, left and right, respectively): instars IV and V.
See Couplet 4. 21 - The tarsi of most species consist of three segments, but if they consist of two, then either pulvilli are absent, or if present, they are not elongate and free but usually attached on one side to the claws. If wings are present, they usually extend to conceal the connexivum (Fig. 9). Compound eyes are usually present and appear relatively large, or, if reduced in size, relatively few ommatidia are present. If compound eyes are absent, the insects are parasitic on bats. 7 Fig.
For example, the same structure may be called a paramere by one author, a clasper by another, and a harpagon by a third. For many years, entomological literature employed names other than penis for the male structure through which the sperm is transmitted. Taxonomists specializing in other insect orders now employ this term, but in literature on aquatic heteropterans, this structure in still often referred to as the phallus, which consists of a basal apparatus and the aedeagus, through which the sperm passes.