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Table 4 Comparison of phasmid species known to outbreak

From: The worldwide status of phasmids (Insecta: Phasmida) as pests of agriculture and forestry, with a generalised theory of phasmid outbreaks

Species Host plants Eggs laid Body length Life cycle
Diapheromera femorata Young nymphs on low growing plants: beaked hazel, rose, juneberry, sweetfern, blueberry, strawberry. older nymphs/adults: black oaks, basswood, wild cherry and less preferred: quaking aspen, paper birch, hickory, locust, apple, chestnut [45]. 150
3 per day [45]
2.5″–3.5″ [45] Eggs hatch May/June, Adulthood late July/August, mating a week later, egg lying until October. In north of range eggs double diapause and there are two broods, further south eggs hatch year following oviposition [45]
Didymuria violescens Various species of Eucalyptus (see species report) 200
1–5 per day [27]
357 (mated) 401 (virgin)
([146] laboratory)
Approx 3″ [27] Egg hatches in spring (October–December) after 6–18 month diapause. Five nymphal stages from 1 to 3 weeks each [27]
Podacanthus wilkinsoni Various species of Eucalyptus   120 mm [85] Eggs remain dormant until spring, or spring the following year. Insects mature the same year they emerge from the egg