Caterpillar Id - Knowledgebase Question

High Point, NC
Question by bobrien1
November 14, 1999
Clearing leaves from garden this weekend and discovered a small caterpillar (1-inch). Olive green, two silver grey length-wise stripes on either side of back, and ten pair of black half-circle spots between the stripes. I believe it is late for butterfly season here (mid-Nov). Friend or pest?

Answer from NGA
November 14, 1999


A number of moths overwinter in one form or another in leaf litter or soil but based on your description it sounds rather like the garden webworm caterpillar (Achyra rantalis). This pest can have two to four generations a year and overwinters as pupae in the soil (the larvae also drop to the ground when disturbed), so I suppose it is possible. For a good close-up photo of this and other common garden insects in various life stages you might "enjoy" a look at Rodale's Color Handbook of Garden Insects by Anna Carr, paperback ISBN 0-87857-460-3. You could also see if I've guessed right!

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