| Since the claw flexor muscle in insects has no antagonist, claws and arolium are moved back by elastic recoil of stretched exocuticle. |
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| In crosssection, the caps are the upper, thickened portion of fungiform structures arising from convolution of exocuticle. |
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| All possess an extremely thin epicuticle and a thick, massive outer exocuticle. |
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| Histologically, the lesions present as a degradation of the epicuticle and exocuticle. |
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| Several bundles of muscle just above the exocuticle are evident from their strong acidophilia after staining with hematoxylin and eosin. |
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| It degrades the exocuticle and destroys the tracheal lining of soft bodied insects. |
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| Category 1 is the least severe erosion, with shallow lesions extending into the epicuticle and exocuticle. |
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