Toxoptera citricida (Black Citrus Aphid)
Scientific Name: Toxoptera citricida
Order & Family: Order Hemiptera, Family Aphididae
Size: Roughly 1.5 to 2.8 mm in length.
Natural Habitat
Widely distributed in tropical and subtropical regions; typically found on the terminal buds and young leaves of citrus plants.
Diet & Feeding
A specialized herbivore that feeds exclusively on citrus sap, including oranges, lemons, limes, and grapefruits.
Behavior Patterns
Forms dense colonies on new growth. Reproduces rapidly through parthenogenesis (cloning) during optimal conditions. They exhibit a symbiotic relationship with ants that protect them in exchange for honeydew.
Risks & Benefits
Significant agricultural pest. Risks include the transmission of Citrus Tristeza Virus (CTV), which can kill entire citrus groves. They also cause leaf curling and promote the growth of sooty mold by secreting honeydew.
Identified on: 2/1/2026