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House cricket

Biology

The adult female cricket digs a small hole in the substratum in which to deposit the eggs singly. The eggs are cylindrical, 2-2.5 mm long, and each  female produces around 750 eggs at 30’c.  From the egg emerges a first stage nymph which is superficially like the adult although there are differences in the bodily proportions. There are a large number of nymphal stages before adult, on average 11. The wings and the external genitalia gradually form during this development form the fourth stage onwards. In common with other insects, development times are influenced by temperature, relative humidity, moisture content,quantity and quality of food. The following figures, given in days, are therefore only a guide.


23’c:

Egg………………..42-56

Nymph……………84-240

Adult……………..50+


35’c:

Egg………………20-28

Nymph…………..6-84

Adult…………….50+


The adult life span depends on temperature but is usually several months. Breeding will continue  as long as conditions are favourable. There is no seasonality or diapause. The minimum temperature for development is 21’c, the maximum is 42’c and the optimum is 38’c  

  

Distribution

Originally a native of North Africa and the Middle East, but now cosmopolitan Established in the UK for several centuries.

Significance

Crickets are found mostly associated with factories, hospitals, domestic premises, rubbish tips, breweries etc, frequently within the heating duct systems. Crickets are nocturnal and the first “sign” of an infestation is generally the sound!! In domestic premises it is the sound which is often the main cause of complaint although the crickets can cause damage through their feeding to woollen garments, silks, foodstuffs etc. They tend to be nocturnal and widely omnivorous, indeed they show a strong tenancy to cannibalism. In summer they live in the open, especially on refuse tips. In warm summers, indoor-bred house crickets may leave the shelter of buildings and wander some distance from their more usual haunts.

Control

Please Call East Lancashire Pest Control on 0800 023 6116 for a free visit and quote.


Key features

Male house crickets are around 14 to 20 mm long, females are 14 to 18 mm long plus an ovipositor of 8 to 13 mm long. They  are greyish brown in colour and they have three distinct dark brown cross bands on the head. Both sexes are fully winged; the forewings cover the abdomen and the hind wings extended beyond the body. They have extremely long filiform antennae which are longer than the body. At the posterior end of the body they have prominent anal cerci, sensory structures, and in the female,a large egg-laying tube (ovipositor) protruding between the cerci and extending beyond the hind wings. The hindmost pair of legs in crickets is adapted for jumping and therefore has well developed femora and tibiae. In male crickets, the forewings are adapted for sound production and give rise to the characteristic chirping of the cricket which is a means of communication. There are specially adapted sense organs on the forelegs of crickets which receive the chirping sounds.