not sure what this is (Assassin Bugs (Family Reduviidae))?

bobfriedman · Post by **bobfriedman** » Mon May 25, 2015 3:15 pm

Nikon D800E ,Mitutoyo M Plan APO 5x NA 0.14 200/0
350 stack (40% oversampled on this one)

rjlittlefield · Post by **rjlittlefield** » Mon May 25, 2015 6:20 pm

From general appearance and what I can see of the mouthparts, this is one of the "true bugs", order Hemiptera. Both the amount of hair and that bright white spot on the back seem pretty distinctive, but I don't recognize the beast.

What does "40% oversampled" mean in terms of a step size?

--Rik

ChrisR · Post by **ChrisR** » Mon May 25, 2015 10:22 pm

Do ticks come that small?

Edit - the "white spot", I meant.

bobfriedman · Post by **bobfriedman** » Tue May 26, 2015 3:16 am

this bug was quite big about 30mm long... the antennae added additional mm's

40% oversampled means.. that i forgot to reduce the number of steps

so i don't know exactly but you can calculate it should have been around 250.. i have begun doubling the Mitutoyo DoF 0.014mm for this objective as you pointed out. turns out that antenna at the top added another 2-3mm.

bobfriedman · Post by **bobfriedman** » Tue May 26, 2015 3:47 am

by the way, the white spot was not completely symmetric behind the head with the nose.. which makes me wonder if it was a growth or a parasite.

bobfriedman · Post by **bobfriedman** » Tue May 26, 2015 5:02 am

Nikon D800E ,Mitutoyo M Plan APO 10x NA 0.28 200/0
350 stack

Nikon D800E ,Mitutoyo M Plan APO 5x NA 0.14 200/0
350 stack

bobfriedman · Post by **bobfriedman** » Tue May 26, 2015 6:41 am

i think this may be one of the Assassin Bugs (Family Reduviidae)

rjlittlefield · Post by **rjlittlefield** » Tue May 26, 2015 11:26 am

Thanks for the alternate view of the white spot. Yes, that looks like some sort of parasite, not a feature of the bug itself. On a caterpillar, my first thought would be tachinid fly egg. On a bug like this, I have no idea.

Thanks also for clarification about the step size. So, if I have done the calculations correctly, your step size was actually (250*0.028)/350 = 0.020 mm = 20 microns, same as what Charlie uses.

--Rik