Which spider mite is recognized as Tetranychus urticae and affects cotton, corn, and strawberries?

Tetranychus urticae, commonly known as the twospotted spider mite, is a significant agricultural pest that affects a variety of crops, including cotton, corn, and strawberries. This spider mite is recognized by the two distinctive dark spots on its body, which is a key characteristic that helps in its identification. The twospotted spider mite has a broad host range, feeding on the leaves of many economically important plants, leading to stippling and eventual leaf damage, compromising plant health and yield.

In contrast, the other options represent different types of spider mites that either have a more limited host range or are not commonly associated with the specific crops mentioned. The carmine spider mite is more focused on specific hosts and has a different impact on crops. The strawberry spider mite tends to specifically target strawberries and is less relevant to cotton and corn. Lastly, the Pacific spider mite, while also a pest, does not have the broad economic significance across the same range of crops as the twospotted spider mite. Thus, identifying Tetranychus urticae accurately is crucial for effective pest management strategies in various agricultural practices.