. Entomology : with special reference to its biological and economic aspects. t or the appearance of another species. A. Cryptic Colors.—Protective and Aggressive Resemblances. 1. Procryptic colors.—Protective Resemblances.—Conceal- ment as a protection against enemies. Example: Kal-linia butterfly. 2. Anticryptic colors.—Aggressive Resemblances.—Conceal- ment in order to facilitate attack. Example: Mantidswith leaf-like appendages. B. PsEUDOSEMATic CoLORS.—False warning and signalling colors. 1. Pscudaposcniatic colors.—Protective Mimicry. Example: Bee-like fly. 2. Psendcpiscmatic colors.—Agg
. Entomology : with special reference to its biological and economic aspects. t or the appearance of another species. A. Cryptic Colors.—Protective and Aggressive Resemblances. 1. Procryptic colors.—Protective Resemblances.—Conceal- ment as a protection against enemies. Example: Kal-linia butterfly. 2. Anticryptic colors.—Aggressive Resemblances.—Conceal- ment in order to facilitate attack. Example: Mantidswith leaf-like appendages. B. PsEUDOSEMATic CoLORS.—False warning and signalling colors. 1. Pscudaposcniatic colors.—Protective Mimicry. Example: Bee-like fly. 2. Psendcpiscmatic colors.—Aggressive Mimicry and Allur- ing Coloration. Examples : Volucclla, resembling bees(Fig. 246) ; Flower-like SEMATIC COLORS.—Warning and Signalling Colors. 1. Aposcmafic colors.—Warning Colors. Examples : Gaudy colors of stinging insects. 2. Episcmatic colors.—Recognition Markings. III. EPIGAMIC COLORS.—Colors Displayed in Courtship. Such of these classes as have not already been discussedneed brief reference. ADAPTIVE COLORATIONFig. 246. 235. Aggressive mimicry. On the left, a bee, Bombus mastnicaiiis; on the right, a fly,Volucella bombylans. Natural size. Aggressive Resemblances.—The resemblance of a car-nivorous animal to its surroundings may not only be protec-tive but may also enable it to approach its prey undetected, asin the case of the polar bear or the tiger. Among insects,however, the occurrence of aggressive resemblance is ratherdoubtful. e\en in the case of the leaf-like mantids. Aggressive Mimicry.—Under this head are placed thosecases in which one species mimics another to which it is best known instance is furnished by European flies of thegenus Volucella, whose larvae feed upon those of bumble beesand wasps. The flies bear a close resemblance to the bees,owing to which it is supposed that the former are able to enterthe nests of the latter and lay their eggs. Alluring Coloration.—The best example of this phenom-e
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