Too Long; Didn't Read

What we have learnt from the Sacred Beetle must not lead us into rash generalizations and make us attribute it in every slightest detail to the other Dung-beetles of the same family. Similarity of structure does not entail parity of instincts. A common basis no doubt exists, resulting from identity of equipment; but many variations of the essential theme are possible and are dictated by inherent aptitudes of which the insect’s organization gives us no inkling. In fact, the study of these variations, of these peculiarities, with their hidden reasons, forms the most attractive part of the observer’s researches as he explores his corner of the entomological domain. Unsparing of time and patience, sometimes of ingenuity, you have at last learnt what this one does. See now what that one does, his near neighbour structurally. To what extent does number two repeat the habits of number one? Has he ways of his own, tricks of the trade, industrial specialities unknown to the other? It is a highly interesting problem, for the impassable line of demarcation between the two species is much more conspicuous in these psychological differences than in the differences of the wing-case or antenna.