How To Pin Your Insect Specimen

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Specimens should be Fresh or relaxed for Pinning

For specimens too small to pin

What Pins Should You Use?

Insects should be pinned in a uniform manner using pins made especially for this purpose. Obtain insect pins from a biological supply house or company that specializes in entomology and collecting insect specimens. I recommend our website www.insects4sale.com. Do not use common straight pins since they will rust and soon ruin what may be valuable specimens. The brands I prefer are Ento-sphinx insect pins and Entochrysis insect pins. I use black enamel but pins are available in stainless steel as well. Pins come in 10 sizes as listed below:

size 000
size 00
size 0
size 1
size 2

size 3
size 4
size 5
size 6
size 7

I have found that sizes 0, 1, 2 and 3 are needed for most average sized insect specimens. I use size 7 for thick bodied insects such as the Hercules Beetle or Giant Silkworm Moths.

Specimens should be Fresh or relaxed for Pinning

www.Insects4Sale.com under the item name Appendage Relaxing Fluid. Lepidoptera can be relaxed with simple to follow instructions outlined in ‘Relaxing your Butterfly or Moth Specimen’ available on the website or included with the purchase of most Butterfly or Moth dried and papered specimens.

How to insert the Pin

The best place to insert the pin through the specimen depends largely on the body type or scientific Order of the insect being pinned. Image 1a shows 5 of the major body types with a dot indicating where to place the pin. Piercing the pin through the insect in the correct location will avoid damage to appendages as the pin exits the opposite side of the insect’s body. The insect should also be parallel to the pinning surface and at a 90-degree angle to the pin. The back or top side of the insect should be about 4mm from the top of the pin allowing room to grab the pinned specimen with your fingers or pinning forceps without damaging the specimen or changing its position on the shaft of the pin. Image 1b shows the correct way to insert the pin and several wrong ways to do so.

Labeling your Pinned Specimen

Now that you have pinned your insect specimen it is time to insert the labels on the pinned specimen. Neatness counts and I have found it best to use a pinning block to place the specimen and labels evenly and uniformly on the pin. Image 1c shows a pinning block available through the website.

Pinning Block

For specimens too small to pin

GelCaps are clear capsules made of a dry gel. The capsules may be opened and its specimen removed. The specimen may be later placed back into the gelcap and the gelcap can be closed for retrieval at a later time.

The best part is the clear capsule may be pinned through without ever touching the tiny and delicate specimen. A collector can remove the tiny specimen, examine it under a dissecting microscope and then replace it and return it to the collection. Keep in mind that most teachers resist change and prefer the pinning point method developed sometime in the 1800’s.