Coleoptera
Ethic of collecting
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And, I think you will find that most or all tend to be the end result of habitat destruction, not collecting. There are not enough collectors in the world that want a given species to make it extinct, unless (and it would have to be a very unusual circumstance still) the range is severely restricted via habitat destruction, or the species is nearly extinct already (generally both the same situation; e.g. if there is only one hectare left of a butterfly's food plant). Viable insect populations are so large that collecting has little impact; predation by other natural enemies of the insect in question would be orders of magnitude more important. We see occasional pronouncements of this or that species becoming rare in favored collecting localities--these tend to be pronouncements by occasional collectors who remember the large numbers "the trip before" and find few or none a year (or decade) later. Unfortunately, some of these pronouncements ever are published, but the authors never take into account seasonality, or the strong influence of weather on insect populations. Cheers, Bill Warner

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