HORTICULTURE

Detailed explanation-1: -Large, strong flying, highly mobile flies are typically the first insects to be attracted by the faint aromas emanating from a fresh corpse. Blow flies (family: Calliphoridae) frequently arrive within minutes to a few hours after death, and are generally the first individuals to arrive at a crime scene.

Detailed explanation-2: -The first type of insect to arrive at a dead body is usually a blowfly (Calliphoridae), attracted by body fluids and gases. It lays its eggs within two days after death, so its stage of development-egg, larval stages, prepupal or pupal stage, adulthood-will suggest how long the corpse has been lying undetected.

Detailed explanation-3: -Their development follows a set, predictable, cycle. The insect egg is laid in batches on the corpse and hatches, after a set period of time, into a first instar (or stage) larva. The larva feeds on the corpse and moults into a second instar larva. The larva continues to feed and develop into a third instar larva.

Detailed explanation-4: -Blow flies and flesh flies are the most useful crime scene insects for determining the postmortem interval, or time of death. Through laboratory studies, scientists have established the developmental rates of necrophagous species, based on constant temperatures in a laboratory environment.