Curinus coeruleus
(Mulsant, 1850)
Metallic Blue Lady Beetle
Curinus coeruleus is a metallic ladybeetle in the , established as an agent in multiple regions. It is known to on , particularly (), and has been evaluated for control of Heteropsylla cubana. The exhibits a distinctive metallic blue coloration and has been introduced to areas including the Philippines and Florida for pest management.
Pronunciation
How to pronounce Curinus coeruleus: /ˈkjʊrɪnəs kɔˈruːliːəs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Metallic coloration distinguishes this from most other , which typically exhibit red, orange, or with black spotting patterns. The uniform metallic blue sheen is diagnostic within its range.
Images
Habitat
Citrus production systems; areas where target are established. Specific microhabitat preferences beyond agricultural contexts are not documented.
Distribution
to South America (Brazil: Alagoas, Minas Gerais, Pernambuco, Paraná, Rio de Janeiro, Santa Catarina, São Paulo). to Middle America, North America (Florida), Oceania, and the Philippines.
Diet
of , specifically (). and (3rd–4th ) consume both armored and unarmored , with significantly higher consumption rates on unarmored scales. Adults reared on armored scales subsequently prefer unarmored scales when given a choice.
Host Associations
- Chrysomphalus aonidum - (); primary in citrus systems
- Heteropsylla cubana - Target of introduction in Philippines
Life Cycle
with , larval, pupal, and stages. Larval development occurs on ; 3rd–4th have been documented consuming prey. Adults emerge from larvae reared on scale diets.
Behavior
is reduced by the physical armor of , which acts as an initial barrier. Consumption rates increase over time (24–72 hours) as overcome this obstacle. show learned or developmental preference for unarmored scales when reared on armored or mixed diets.
Ecological Role
agent of pests in citrus production systems. Significant consumption of indicates capacity to suppress pest , though armor reduces immediate .
Human Relevance
Used as an agent for management of in citrus production and Heteropsylla cubana in the Philippines. Potential for suppressing pest in agricultural systems where established.
Similar Taxa
- Other CoccinellidaeMost ladybeetles exhibit red/orange/ coloration with black spots rather than uniform metallic ; Curinus coeruleus distinguished by metallic blue sheen
More Details
Predation on Armored Scales
Laboratory studies demonstrate that the protective armor of significantly impedes : consumption of was 64–68% at 24 hours versus 100% for unarmored ; larval consumption was 25% versus 92–100% respectively. However, consumption rates increase over 72 hours, indicating eventually overcome this barrier.
Introduction History
The has been deliberately to multiple regions outside its South range for purposes, including Florida and the Philippines.