. Occasional papers of the California Academy of Sciences. AorABS FOREWING CuP CuA; CuA,. --••5^-A HINDWING Figure 24. Wing venation of a plesiomorphic embiid, Clothoda longicauda Ross (Clothodidae). ScBS, RBS, CuBSand ABS are symbols for blood sinus veins. RML = radius marginal line. Note; MP vein is anomalous in hindwing. The fact that the sinus veins are similarly-deve-loped throughout the order indicates a great antiqui-ty for the specialization, but one preceded byevolution of the silk-spinning ability and increasedsurvival associated with the complete confinementin silk galleries. Such u
. Occasional papers of the California Academy of Sciences. AorABS FOREWING CuP CuA; CuA,. --••5^-A HINDWING Figure 24. Wing venation of a plesiomorphic embiid, Clothoda longicauda Ross (Clothodidae). ScBS, RBS, CuBSand ABS are symbols for blood sinus veins. RML = radius marginal line. Note; MP vein is anomalous in hindwing. The fact that the sinus veins are similarly-deve-loped throughout the order indicates a great antiqui-ty for the specialization, but one preceded byevolution of the silk-spinning ability and increasedsurvival associated with the complete confinementin silk galleries. Such unusual wing adaptations musthave been initially perfected in a single species for itseems unlikely that they could have evolved withidentical complexity more than once. Furthermore,primary selection pressure for wing flexibility wasmost likely on adult females, not adult males, to adaptthem more perfectly to gallery life. The adult life ofa male is too short and its prime biological function—simply a non-feeding vehicle for delivery of spermand genetic diversity—is performed s
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectscience, bookyear1890
