Spider Mite – Tetranychidae spp.

Spider mites are members of the Tetranychidae family, which is reported to contain over 1000 species.

Spider mites contain 4 distinct phases of their life cycle. After hatching, they enter the first 6-legged larval stage, then into the protonymph. and Deutonymph, and finally adult.
In adult form, they are considered a “medium-sized” mite, only 0.4 mm long, with the females weighing approximately 5 times as much as the male adults.
In most species, both the males and females are straw coloured. However, fully engorged females tend to be more opaque. And there are some colour variations within species, including shades and hues; these are commonly green/red/brown combinations.

Spider Mite Life Stages
Spider mite life cycle. Image courtesy of L.D. Godfrey, University of California, Statewide Integrated Pest Management Program. (from Utah state university website)

 

They spin a dense silk web to help protect themselves from predators, which is usually the key indicator for spider mites.
They have irregular, but usually circular patterns of damage.

20250210 183916
You can see the fine silken web among the leaf of the grass.

another example of the webbing, with small spiders visible.
from: agric.wa.gov.au

 

 

20250220 073606
Typical Spider mite damage pattern, complete with webbing around the outside

 

 

The typical life cycle of Spider mite for australian conditions

Spider Mite (2)

 

 

 

Identify your lawn problem

We help you identify your issue and match it to the perfect product