Overview of Paracossulus (Catopta) thrips
The life cycle of Catopta thrips is closely associated with low-altitude ecosystems in warm climatic conditions. Monitoring and conserving this species provides an important indicator of the ecological state of the habitats it occupies. Declines in its populations signal habitat changes often linked to soil contamination from agricultural chemicals, shifts in natural vegetation, loss of biodiversity, increased fire risk, and other disturbances. These pressures directly affect the resilience of ecosystems and disrupt the ecosystem services upon which human well-being depends.
Paracossulus (Catopta) thrips occurs in isolated areas of Bulgaria, with its principal sites located near Balchik and Reselets. The species favours steppe and semi-steppe habitats, where wormwood (Artemisia) plays a crucial role in larval feeding and reproduction. The populations around Balchik represent the most critical habitat for the species in Bulgaria, making their protection a conservation priority.
Major Threats to the Species
- Habitat loss and urban development;
- Wildfires and vegetation burning;
- Changes in plant community composition resulting in the loss of key host plants required for the species’ life cycle;
- Use of biocides, hormonal substances, and other agricultural and forestry chemicals.
What Does the Project Include?
The project aims to develop an Action Plan for the conservation of Paracossulus (Catopta) thrips.
The main activities include:
- Preparation and approval of the technical assignment for drafting the Action Plan;
- Two years of field surveys across different seasons and habitat types, in accordance with the species’ biology and the life-history elements requiring assessment;
- Collection and analysis of existing information from published sources and previously recorded data for the species in Bulgaria;
- Expert meetings involving specialists and relevant stakeholders;
- Preparation of the first draft of the Action Plan;
- Public consultations with stakeholders in Sofia and Balchik;
- Incorporation of comments and recommendations and finalisation of the Action Plan.
Why Is It Important?
Developing a conservation plan for Paracossulus (Catopta) thrips is crucial because the species functions as an indicator of the health of the ecosystems in which it occurs. Declining populations reflect habitat changes associated with soil contamination, vegetation loss, and decreasing biodiversity. The project aims to identify the key threats and propose effective measures for safeguarding the species and its habitats, which are essential for maintaining ecological balance.