Wikipedia
Entomotoxicology is not an acceptable scientific term, the main science is: Insect toxicology, we can not call "entomotoxicology" effect of toxins...etc. on arthropods but rather effect of toxins...on only insects, 'Entomology" is only about insect and not all arthropods.
In forensic entomology, entomotoxicology is the analysis of toxins in arthropods (mainly flies and beetles) that feed on carrion. Using arthropods in a corpse or at a crime scene, investigators can determine whether toxins were present in a body at the time of death. This technique is a major advance in forensics; previously, such determinations were impossible in the case of severely decomposed bodies devoid of intoxicated tissue and bodily fluids. Ongoing research into the effects of toxins on arthropod development has also allowed better estimations of postmortem intervals.