False Crocus Geometer Moth - Xanthotype sp.
Probably Xanthotype sospeta or Xanthotype urticaria, False Crocus Geometer Moth - Hodges #6740.
Order: Lepidoptera / Superfamily: Geometroidea / Family: Geometridae / Subfamily: Ennominae
The geometer moths' larvae are called inchworms, spanworms or loopers. Live adult moths and caterpillars photographed in the wild at Winfield, Illinois, USA.
 


Xanthotype urticaria, male specimen
 

Geometridae is a large family of moths, containing approximately 26,000 species. Most moths in this family have slender abdomens and hold their wings flat, with hindwings visible. The name geometer means "earth-measurer" in Latin. It refers to the caterpillar's peculiar method of locomotion; they lack the prolegs of most other lepidoptera, and move by grabbing the substrate with their front legs then looping the body upwards to pull the back legs forward, then reversing the process. The caterpillars are commonly called inchworms, loopers, or spanworms. (Fig. 3)


Figure 3. Geometrid caterpillar, or "inchworm"

 

 

              
 
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