0 a mark that is not regular in shape, for example on a person's skin:
1 an unwanted mark on a surface that is different from the surrounding area:
The larval stage is a leaf miner that feeds on young leaves and creates a blotch mine on the upper surface of the leaf.
This is owing to the fact that he considered his specimens as immature and that they had not as yet developed abdominal blotches.
The black markings were considerably reduced, the pronotal blotch being absent.
Yield loss to spot blotch in spring bread wheat in warm nontraditional wheat production areas.
A blackish brown transverse band across the front of the head, and small blackish brown blotches bordering the front of the ocular projections.
The lateral blotch of the pronotum becomes somewhat reduced in size during the early dissocians stages but only breaks up and fades away completely in the more extreme forms.
Dark markings similar except that all are black and that the lateral pronotal blotch is better developed.
Marginal frontal band yellowish brown, a little darker than ground-colour of head, turning inward just before the antennse and ending in a red-brown blotch.
