Q: Can you identify this insect? It’s beautiful, gentle and somehow makes me think of an acoustic guitar. There are perhaps 30 of them in the main crook of a tree at my home.
Ar: These giant mesquite bugs (Thasus neocalifornicus) are a common sight in desert southwest landscapes, particularly on mesquite trees during May-August. These large bugs commonly aggregate in family groups and look impressive that way with their brightly colored nymphs. Despite their name, they may also be found on other garden and landscape plants.
They cause no significant plant damage, are harmless to humans, and do not have a venomous bite or sting so enjoy these bright highlights on our mesquite trees.
Peter L. Warren is the urban horticulture agent for the Pima County Cooperative Extension and the University of Arizona. Questions may be emailed to plwarren@cals.arizona.edu
