The adult fleas live on the host, drinking their blood through specialised mouthparts. Because they are not fussy about which host they leap upon, the potential for spreading disease is great. The Dog and Cat Fleas Ctenocephalides spp. During the day, it lurks in cracks and crevices around sleeping areas, emerging at night to feed on the blood of anyone sleeping nearby. It has lost the wings which are normally found in members of this order.
Bedbugs cause considerable irritation and loss of sleep in afflicted individuals.
The presence of bedbugs in hollow bed heads has been blamed for the unpopularity of these items in past years. When investigators arrive at the scene of a crime, they rely on a number of procedures to allow them to determine what has transpired. A technique which is gaining in popularity as it is refined is that of forensic entomology , or the use of insects in crime scene investigations. Each species of fly has different preferences as to the conditions under which it lays its eggs. Some flies are only active during the day, others at night.