Cluster Flies



Name: Cluster Flies - Pollenia rudis
Lifecycle: Complete metamorphosis
Egg: Laid in Damp soil or rotting vegetation. Hatch within 1 week.
Larvae: Soon after they hatch they seek out earthworms to parasitise. Development time within the worm is several weeks.
Pupae: Larvae migrate out of the deceased worm host and pupate in the soil.
Adult: Adult emergence is environmentally triggered with an average 2 generations a year in the UK, adults will also overwinter in buildings seeking cracks and crevices for shelter.
The adults are 6mm long with a black thorax covered in a sheen of golden hairs. Usually appearing in great numbers after periods of cold weather with a slow and sluggish flight.
The larvae are parasitic and therefore difficult to monitor or control. Adults will spend the majority of the year outside and only come into close contact with humans during the late autumn when they look to overwinter.
Signs of infestation
Large numbers of adults will cluster into cracks and crevices in houses, usually most commonly found in window edging or in roof spaces.
Recommended Products – Cytrol Forte, Cimetrol, Vulcan P RFU, Agrikill.
1. The British pest management manual. Section 5, pg 151.
2. Lab notes, Tarakan International.

Click on a recommended solution for this pest below :

Cimetrol Super is the next generation of product for the control of bed-bugs , fleas and crawling insects. Formulated as an oil-in-water emulsion incorporating a micro-capsule suspension, it contains a Type I pyrethroid for fast flushing and knockdown, a Type II pyrethroid for rapid kill of the insects, a metabolic synergist to bypass insect metabolic resistances, and an Insect Growth Regulator (IGR), to ensure that any stubborn populations never get to pass their resistant properties onto the...

One of the ‘flag-ship’ products of the PelGar range, Cytrol Forte is a high strength wettable powder, containing the powerful synthetic pyrethroid cypermethrin. This has excellent insecticidal qualities and good ‘flushing’ and ‘knock-down’ effect.

Vulcan P RFU Fly Spray is a kerosene-based (odourless), ready-for-use (RFU) fly spray based on the killing agent permethrin and the knock down agent tetramethrin. The formulation is synergised with piperonyl butoxide and approved in the UK for application as a residual spray and as a ‘space’ treatment.

Agrikil is a professional grade, ready-for-use aerosol for the control of flying and crawling insects in public hygiene situations. Effective knock-down and kill, Agrikil also contains a synergist for added effect and has a citrus perfume to ensure a pleasant smell is left behind.

About Us

PelGar International was incorporated in 1995 to develop and supply innovative and novel rodenticide and insecticide products to the global public health pesticide market. PelGar believes that, while the active ingredients used in the industry are common, the target pests and the environment in which they live are very different. Providing cost effective control therefore means that the active substance needs to be available in a wide range of formulations and this is where PelGar’s expertise lies.

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