Tetranychus cinnabarinus

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Tetranychus cinnabarinus feeding damage (click on image to enlarge it)
Author(s): Merle Shepard, Gerald R.Carner, and P.A.C Ooi, Insects and their Natural Enemies Associated with Vegetables and Soybean in Southeast Asia
Source: IPM Images

Tetranychus cinnabarinus (Boisduval, 1867) - (carmine spider mite)

The mite is highly polyphagous and widespread in warmer regions and greenhouses around the world. The mite feeds mainly on the underside of the leaves, causing chlorosis, leaf curling and premature leaf drop. In field crops, the mite is mainly controlled by acaricides, but the development of pesticide resistance has been a problem. The complete life cycle from egg, through 2 nymphal stages, protonymph and deutonymph, to mature adult last about 1-3 weeks. Per year, 20 and more generations may be completed.

The females are oval, around 0.5 mm long and brownish-red with dark spots. The males are slightly smaller yellowish-green with a black spot on both side of the body. The species is very similar to Tetranychus urticae and some authors consider both species to be forms of T. urticae (e.g. Auger et al., 2013). In general T. cinnabarinus can be distinguished by the colour of the summer females which is red (rather than yellowish-green). However, the colouration of T. urticae can be highly variable.

Vernacular names
• Deutsch: Karminspinnmilbe
• English: carmine spider mite
tropical red spider mite
• Español: araña roja de los cítricos
• Français: araignée carmin