| 41. | The mine it is filled with a string of frass grains.
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| 42. | The frass is deposited in the upper part of the mine.
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| 43. | The frass is deposited in the basal part of the mine.
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| 44. | The frass is deposited in a continuous, sometimes double line.
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| 45. | In the blotch, the frass is either dispersed or clumped.
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| 46. | The tunnel entrance is covered by a silken web containing frass.
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| 47. | The frass is deposited in the central part of the mine.
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| 48. | The frass is deposited in an irregular, broad central line.
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| 49. | Dark-green granular frass pellets are deposited throughout the mine.
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| 50. | Most frass is deposited in the lower part of the mine.
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