FORS-2106EL Lecture Notes - Lecture 2: Scavenger, Weight Loss, Trace Evidence
27 Jun 2018
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Forensic Biology - Day 2
Beetle Larvae
-Beetle larvae have pro-legs, which fly maggots do not have
-Scarab beetles larvae
-curled up looking
-Carrion beetle larvae
-Dark and larger, have fringes around the body
-Rove beetle larvae
-Is long with 2 things on the end of the body
-Skin beetle larvae
-Very hairy and smaller
-Feed off of dead skin flakes
-Exuvium is shed skin they leave behind
Beetles
-Carrion beetles
-Orange/Yellow body parts
-Some look like they’ve been dusted with flour
-Body is flat
-Burying beetles
-Have orange patches on elitra (wing cases)
-thorax has gold hairs on it
-Skin beetle
-looks very hairy
-can cause damage on skin as they eat away at dead skin tissue
-Areas that look like “silly string” is skin beetle waste
-Can be differentiated from wound by looking at edges that are very uneven
-Hairy Rove Beetles
-Very big
-Clown beetles
-look like lady bugs but all black and very oval
-Red-legged ham beetle
-Blue/turquoise body, very small
-Scarab (Dung) beetles
-Very big or small and very robust
-They will eat animal waste
Maggot Migration
-Maggots migrate away from the body
-Each species is “programmed” to go a certain distance, and then borrow (dig
themselves into a little hole) to grow to pupae
find more resources at oneclass.com
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Document Summary
Beetle larvae have pro-legs, which y maggots do not have. Dark and larger, have fringes around the body. Is long with 2 things on the end of the body. Exuvium is shed skin they leave behind. Some look like they"ve been dusted with our. Have orange patches on elitra (wing cases) Can cause damage on skin as they eat away at dead skin tissue. Areas that look like silly string is skin beetle waste. Can be differentiated from wound by looking at edges that are very uneven. Look like lady bugs but all black and very oval. Each species is programmed to go a certain distance, and then borrow (dig themselves into a little hole) to grow to pupae. They can burrow into the ground, leaves, carpet, clothes, etc. When there is no sun, they tend to migrate to random directions.
