Aclerdidae

Definition

A family of scale insects (superfamily Coccoidea, order Hemiptera) comprising small, sedentary, plant-feeding species that inhabit grass stems and leaf sheaths. Aclerdids are endophytic, living concealed within plant tissues where they feed on phloem sap; unlike many other scale insects, they lack the conspicuous waxy coverings typical of armored scales (Diaspididae) and soft scales (Coccidae).

Etymology

Example

Species of Aclerdidae such as those infesting turf grasses and cereal crops are often overlooked in field surveys because they remain hidden inside leaf sheaths, requiring dissection of plant material for detection.

Related Terms

• Coccoidea
• Hemiptera
• scale insect
• Diaspididae
• Coccidae
• endophytic
• phloem feeder
• grass pest

Usage Notes

Aclerdidae is a relatively small and understudied family whose members are distinguished ecologically by their specialized association with grasses (Poaceae) and morphologically by reduced external wax secretion. They are sometimes confused with mealybugs (Pseudococcidae) or other endophytic scale insects but differ in their strict grass host specificity and simplified body plan. The family is of minor economic importance compared to major scale insect families, though localized infestations can affect forage quality and turf health.