California State University, East Bay
Session 2013-001

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Transcript

Connected on 2013-02-07 19:00:00 from Alameda, California, United States

• 5:51 pm
• Bugscope Teamsample is pumping down
• 6:06 pm

• 6:15 pm

• Bugscope Teamnow making preset's for this evening's session
• Bugscope Teamaaauuuggh
• Bugscope Teampresets

• 6:21 pm

• Guestforgot my password....see you online in about 30 minutes
• 6:27 pm

• Bugscope Teamsuper cool

• 6:34 pm
• Bugscope TeamI emailed your password.

• GuestOK - I will stay in as a guest if that is OK :)
• 6:40 pm

• 6:45 pm

• Bugscope Teamyou have control now Dr Korb

• 6:50 pm

• 6:56 pm

• 7:07 pm
• Guesthi Scott - what is this image showing?
• Bugscope Teamits a scale on the eye of a millipede
• Bugscope Teamit's a moth or butterfly scale
• Bugscope Teamthe ridges we see interfere with the wavelengths of visible light and produce what are called structural colors
• Bugscope Teamthe grooves you see on the scale are responsible for colouration of the scales

• Bugscope Teamscales also have pigment-based colors
• Bugscope Teamright

• Bugscope Teamif they don't have holes in them, like these do, sometimes it means that they came from more primitive critters, like silverfish

• Bugscope Teamso the background now is kind of hard to make out

• Bugscope Teambut the bumps are ommatidia

• Bugscope Teammillipede ommatidia

• Bugscope Teamto the SW is a busted off antenna base

• 7:12 pm
• Bugscope Teamtiny little legs
• GuestWhat are we seeinh?
• Bugscope Teammillipedes have two pairs of legs per segment
• Guestseeing?
• Bugscope Teamthis is the millipede, curled around itself

• Bugscope Teamtry another preset if you'd like
• Bugscope Teamlet us know if control does not work
• Bugscope Teamwe're using a new control computer, not for Bugscope but for the microscope itself
• Bugscope Teamso things are a tiny bit funky while we work out settings we're comfortable with

• Bugscope Teamthis is super small, not sure where it came from, perhaps a mosquito
• 7:17 pm

• GuestHi! we are the students now!
• GuestWhat are we looking at here?
• Bugscope Teamyou could see a palm frond, signifying that the grasshopper was a martyr
• Bugscope Teamthis is the thorax of a grasshopper
• Bugscope Teamwith a mosquito antenna on it
• GuestWhy is there an antenna attached?
• Bugscope Teamlike in classical paintings of saints
• GuestDo grasshoppers eat mosquitos?
• Bugscope Teamthe antenna just stuck to the grasshopper; its not, like, a homeobox mutant
• Bugscope Teamhaha not normally

• Bugscope Teamnow we can start to see the grasshopper's mouthparts
• GuestCan you control this to show us the face? or eyes!?
• Bugscope Teamtwo sets of palps, mandibles, the eyes almost in view

• Bugscope Teamlooks like it was named Cuthbert, perhaps?
• GuestWhat part do they actually see out of?
• Bugscope Teamthe eyes
• Bugscope Teamthose are on the nw and e
• Bugscope Teamthe compound eyes on either side of the head, just a sec...
• Bugscope Teamthe compound eye is now centered
• 7:23 pm

• Bugscope Teamum ok this is a female housefly

• Guesthi we are the jessica's and Rae
• Bugscope Teamthis is the vestiture, same root word as invest, divest, referring to the 'dressing' on the head
• Guestwhat is a vestiture
• Bugscope Teamhello Jessica and Rae
• Guestnm

• Bugscope Teamnanometer

• Bugscope Teamthese are microsetae on the surface of the head between the eyes
• Guestnm = nevermind :)
• Bugscope Teammany flying insects also have three more eyes on the top of their heads
• Guestcan we look at the 3 eyes
• Bugscope Teamthe three centrally located simple eyes are called ocelli

• Guestwhoa
• Bugscope Teamwe might be able to see them on the ichneumon wasp
• Bugscope Teamnot sure; I don't recall seeing any when we were setting up
• 7:28 pm
• Guestthank you!
• Bugscope Teameyes far apart like Uma Thurman
• GuestHEYYYY
• Guestnew grooup
• Bugscope Teamocelli are used for detecting changes in light and dark, acting as a light meter
• Bugscope Teamif they were close together it would be a male, like Mikhail Baryshnikov

• Bugscope Teamyou can tell the difference in earwigs because the female cercopods are closed, like this
• Bugscope Teamthose in males are bowed outwards
• Bugscope Teamearwigs are fun because we often find mites on them
• Guestso cool
• Guestare those the pinchers?
• Bugscope Teamthis evening we found a couple of mites on this kind of rad black and white bee you sent

• Bugscope Teamyes those were the pinchers

• Bugscope Teamthey are quite handy with them

• Guestwhat are those flake looking things?
• Bugscope Teamabdomen covered with moth scales
• Bugscope Teamthose are scales
• Guestwhat is a mite?
• Bugscope Teamfrom a butterfly or moth

• Bugscope Teammites are tiny arachnid-related 'bugs,' not insects, and they are often, when we see them, parasites
• Bugscope Teammite is a small arthropod
• 7:33 pm
• Bugscope Teamthey are closely related to ticks
• GuestHi Karim and Crystal here
• Bugscope Teamvarroa mites are infamous as one of the reasons for honey bee decline

• Bugscope TeamHi Karim, and Hi Crystal!
• Guestis this the mouth we are looking at ?
• Bugscope Teamnot sure about this mouth (yes it is)
• Bugscope Teamnot all are parasites though, some mites are simply phoretic (hitchhikers), while some are predatory

• Guestwhat are those those hairs?
• Bugscope Teamand sometimes, as in deerflies or horseflies, they have slashing/cutting mouthparts

• Bugscope Teamthe hairs are called setae, or sometimes bristles, and sometimes entomologists give up and call them hairs

• Bugscope Teamthose hairs are setae, they are used for sensing their environment, as insects have an exoskeleton they rely on these hairs for mechanosensing
• Bugscope Teamthe setae are sensory: mechanosensory, chemosensory, thermosensory, sometimes used of proprioception
• Guestwhat is proprioception
• Bugscope Teamsensing yourself
• Bugscope Teamyes! insects do not have skin; the setae stick through the exoskeleton and attach to nerves beneath

• 7:38 pm

• Bugscope Teama lot of times you find bristles near limb joints where they bend to let the insect know how far its limb might be bent

• Bugscope Teaminsects use this to sense the relative areas of their appendages
• Bugscope Teamso yeah like Joe said, self sensing
• Bugscope Teamthe fine setae are called microsetae, and they do not penetrate the exoskeleton
• Bugscope Teamthe microsetae form patterns, sometimes, that help others of their species recognize them, and I think they also help with thermoregulation as well as providing surface area when the insect is flying.

• Bugscope Teamthese ommatidia (facets of the eye; individual lense) are more defined than those on the grasshopper

• Bugscope Teamthe background we see now is silver paint on carbon doublestick tape
• 7:43 pm
• Bugscope Teamsounds like something a waiter would tell you
• GuestHi Fumiko, Ana and Brenna here
• Bugscope Teamhow fine the facets of the eyes can be indicative of the life history of the insect
• Bugscope TeamHi Fumiko, Ana, and Brenna
• Guestis there a spider we can see?
• Bugscope Teamwhereas coarse eyes indicate the insect may be diurnal

• Bugscope Teamyou mean the relative bumpiness compared to the flattened ones?

• Bugscope Teamflattened like in a praying mantis or grasshopper?

• Bugscope Teamuh, like how many bumps there are?
• Bugscope Teamthis is the fly's vestiture, between the mouth opening and the eye
• Bugscope Teamcool DaddyO

• Bugscope TeamI am sorry, no spiders today.
• Guesthi i'm Alicia
• Bugscope TeamAlicia!
• Guestis this the head?
• Bugscope Teamthis is the head of the earwig, a female
• Bugscope Teamyou can see the compound eyes on either side
• 7:48 pm

• Bugscope Teamthere are four palps, two mandibles, two antennae

• Bugscope Teameeuuww

• Guestok, what is this?

• Bugscope Teamsimple eyes are just little domes that pick up light and shadow but seem not to focus
• Bugscope Teamthis is the frons, I think
• Bugscope Teamthe front plate on the mouth of the earwig
• Guestcan you show us the eye?
• Guestdo earwigs bite?
• Bugscope Teamthey pinch us more than they bite
• Guestcool
• Bugscope Teamnot to my knowledge
• Bugscope Teamthey pinch to protect themselves
• 7:53 pm
• Guestwe're going to look at the bee and then go
• Bugscope Teamtheir mandibles are fairly small compared to us
• Bugscope Teamcool

• Bugscope TeamDr Korb found a totally radical bee

• Bugscope Teamright. if they're handled roughly then they might use their pincers on the end of their abdomen, but otherwise they're harmless and good for the garden
• Bugscope Teamthose are hamuli -- wing hooks that secure the fore- to the hindwings for flying

• Guestare those compound eyes?
• Bugscope Teamyes those are compound eyes
• Guestwhat are the spikey fang things?
• Bugscope Teamwe also see the things that look like shears, forget what they're called (the labrum?)
• Bugscope Teamthey protect the glossa -- the tongue
• Bugscope Teamthose look like it's broken off proboscis
• Bugscope Teamthey're called labial palps according to one site I just checked
• Bugscope Teamcheck out the mite
• GuestHey there - Korb here again. We are all out of time on this end - need to move onward in class. These are awesome images! We have to log out. Thank you SO MUCH for staying late! Go have a bug beer to celebrate :)
• Bugscope Teamlabium?
• 7:59 pm
• Guestcool mite!!
• Bugscope Teamoh nm
• GuestIf you want to keep generating images for a few minutes, that is cool. I am going to corral my students. So excited!
• Bugscope Teamwe're looking at the underside
• Bugscope TeamDr K I think we're going to let someone else get on the 'scope, which has been out of commision for a couple of days

• Bugscope Teambut it's cool we got to the see the mite