. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. 78 Bulletin So. Calif. Academy Sciences / Vol. 6^, No. 2, 1^66 36 in C. sculpturatus. Sixty-six young have been produced in one litter by Vejovis spinigerus. Lucas (1890) reports a litter of 91 for Centruroides gracilis (Latreille). The young of the first instar are incompletely developed and ride pickaback on the female until shortly after the first ecdysis. In C. sculpturatus this occurs 6 to 7 days after hatching (Fig. 5) and in. Figure 5. C. sculpturatus with second instar young pickaback.
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. 78 Bulletin So. Calif. Academy Sciences / Vol. 6^, No. 2, 1^66 36 in C. sculpturatus. Sixty-six young have been produced in one litter by Vejovis spinigerus. Lucas (1890) reports a litter of 91 for Centruroides gracilis (Latreille). The young of the first instar are incompletely developed and ride pickaback on the female until shortly after the first ecdysis. In C. sculpturatus this occurs 6 to 7 days after hatching (Fig. 5) and in. Figure 5. C. sculpturatus with second instar young pickaback. Development complete and the young are ready to fend for themselves. H. arizonensis not until after the sixteenth day. The exuviae of the young are generally used on the mother's back as a sort of saddle cloth. During this period of parental care, the female refuses food and if not previously well nourished she may succumb. This condi- tion, combined with the possible ragged appearance of the female produced by many protruding exuviae, seems to have given rise to the well known scorpion matricide fable. The young of the smaller species feed readily on fruit flies while the young of the larger species (C. gracilis, H. arizonensis) can handle small, immature cockroaches and small spiders. Subsequent ecdysis seems to be more associated with food intake than a definite time period. However, as development progresses the ecdyses be- come more widely spaced in time. One C. sculpturatus hatched in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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