Connected on 2013-10-28 13:45:00
from , Colorado, United States
- 12:54 pm
- Bugscope Teamwaiting for the vacuum
- Bugscope Teamto get a bit better
- 1:00 pm
- 1:06 pm
- 1:12 pm
- 1:18 pm
- 1:24 pm
- Bugscope Teamhello Greg!
- Bugscope TeamWelcome back!
- 1:33 pm
- 1:54 pm
- 2:16 pm
- 2:28 pm
- 2:40 pm
- Bugscope TeamGreg!
- TeacherOkay, we are ready, are you?
- Bugscope TeamWelcome to Bugscope!
- Bugscope TeamYou have control!
- Bugscope Teamplease let us know when you have questions
- Bugscope Teamthis is a ladybug larva, scratching its head
- Bugscope Teamyou can see its palps
- Bugscope Teamand you can see one of its mandibles, looks like a happy shark from the side
- Bugscope Teamright in the middle of the head
- TeacherAre those hairs?
Bugscope Teamyes they are -- they're called setae
- Bugscope Teamthis is what a cute little ladybug looks like before it grows up
- TeacherAre those four things tusks?
- 2:46 pm
- Bugscope Teamthey're palps, which are extra little feelers that insects use to help them manipulate and also taste their food
- TeacherWhere are the eyes?
Bugscope Teamthey are simples eyes that look like dots. I don't see any at the moment. I think one of the arms is covering the eyes
- Bugscope Teamthe eyes are called stemmata
- Bugscope Teamthere's one
- Bugscope Teamoften there are five per side
- TeacherWhich one is the eye?
Bugscope Teamit's the thing in the middle that is a bit shriveled
- TeacherDo full grown ladybugs have the same amount of eyes?
Bugscope Teamfull grown ladybird beetles have much better developed compound eyes.
- Bugscope Teammore like this
- 2:52 pm
- Bugscope Teamthis is a type of true bug, with piercing/sucking mouthparts
Bugscope Teamyou can see the piercing/sucking mouth parts between the two compound eyes.
- TeacherWhat are we observing now?
Bugscope Teamthis is a true bug of some sort. Cicadas, aphids, milkweed bugs, and stink bugs all fall into this category.
- Bugscope Teamthis, now, is an ant compound eye
- 2:59 pm
- TeacherHow many individual eye parts are there on an ant?
Bugscope Teamit varies from 10 or 12 ommatidia to more than this, which looks to be about 200
- Bugscope Teamindividual facets of the eye are called ommatidia
- TeacherIs that an antennae hanging down?
Bugscope Teamit's a plant fiber, looks like
- TeacherHow many eyes are on a fly?
Bugscope Teamgenerally 2-5. 2 compound eyes, and 0-3 simple eyes.
Bugscope Teamthe compound eye is what you're looking at currently, with the many, many facets that you see.
Bugscope Teamthese eyes are the ones used for vision, each facet of the compound eye collects a image from a specific angle, and together gets processed and gives the insect a final image that looks like a mosaic (similar to low resolution images that we see on the computer)
Bugscope Teamsimple eyes don't quite function this way, and serves more as light sensors, and motion sensors, helping with navigation of flight, and potentially circadian rhythms (internal body clock).
- Bugscope Teamthere's a closeup of the antenna
- TeacherLike eye pupils?
- Bugscope Teamsome insects appear to have pupils in their eyes -- praying mantises appear to.
- TeacherDo they have pupils?
Bugscope Teamlike students?
Bugscope Teamsort of, if you look closely at a mantis as it's tracking its prey, you can follow a dark spot in its compound eyes.
- 3:04 pm
- Bugscope Teamfruitflies have sponging mouthparts
- TeacherWhat are the 2 things between the eyes?
Bugscope Teamthose are the antennae, which have two components
- Bugscope Teamthere's a kind of padded portion and a branched (aristate) portion
- TeacherWhat sre those hairs in the eyes?
Bugscope Teamthose help the fly to better navigate wind currents by telling it the direction of the currents
- Bugscope Teamrecent research is said to show that males produce a kind of song with the motion of their wings, and the female fruit flies can tune their hearing to those songs using their antennae
- 3:11 pm
- TeacherAre the things in front mouth parts?
Bugscope Teamthe things we see now, in front, are the chelicers, or chelicerae; they open and close, and at the distal end, south of where we are now, are the fangs
Bugscope Teamso yes they are mouthparts
- Bugscope Teamspiders feed by injecting venom into their prey that dissolves the internal organs, which they can then suck out like a milkshake
- Bugscope Teamspiders also have a capability called autotomy, which allows them to jettison a whole limb if they sense that venom from another arthropod has entered that limb
- Bugscope Teamthis is the spider's cuticle
- Bugscope Teamhere is a slightly lower magnification view
- 3:17 pm
Bugscope Teamsetae are the hairs we see all over the insect's body, like these for example
Bugscope Teamthey're mostly related to sensory functions, although they may also be involved in other functions such as thermoregulation
- Bugscope Teamsome spiders have what are called 'urticating hairs,' which they can project toward an animal, including a human, that may be bothering them
- TeacherIs he facing up or down?
- Bugscope Teamit is standing up towards us
- Bugscope Teamyes its legs go up because its body, which we see now, is suspended from its legs
- 3:22 pm
- Bugscope Teamthe kind of daddylonglegs spiders we are used to are not 'true' spiders
Bugscope Teamjust to make it SUPER confusing, there is a spider with the nickname daddy longlegs, and also a fly with that nickname.
- TeacherWhat is that round object?
Bugscope Teamwhat we are looking at now is a pollen grain
- Bugscope Teamthis shape of pollen has been identified with ragweed in the past, but I am not sure that is correct
- Bugscope Teamthe round part, though -- that may be part of its internal components
- Bugscope Teamin humans the maxilla is the upper jaw and the mandible is the lower jaw
- Bugscope Teamthis is a palp, which are what the accessory mouthparts are called in many insects
Bugscope Teamfor a majority of insects, these palps are used for tasting and handling food.
- Bugscope Teamspiders have what are called pedipalps, and the males use them in mating
- 3:28 pm
- Bugscope TeamJoseph is an entomologist here at the University of Illinois.
- TeacherDo we know what kind of wig this is?
Bugscope TeamI think it's a moth wing, and it was white except for a central eye spot
- Bugscope Teamthere are usually mandibular and maxillary palps, so they must in some way correspond to the maxilla and the mandible
Bugscope Team*maxillary and labial
- Bugscope Teamwing scales are considered modified setae
- Bugscope Teamwing scales have a number of functions
- Bugscope Teamyou can see the scales of the moth wing here
Bugscope Teamthey come off very easily, and helps the insect escape from a number of predators, for example, spider webs.
- Bugscope Teamthis is a kind of weevil. weevils are sometimes called snout beetles
- Bugscope Teamthey often eat grain
- TeacherIS the snout showing?
Bugscope Teamwe're looking at the snout, but it is shortened compared to those of many weevils
- 3:33 pm
- Bugscope Teamyou can see a compound eye to the lower left, and to the right and more into the foreground is the snout, with mandibles at the upper right
- Bugscope Teamtheir mouth parts are at the distal end of the snout, and they use this to chew a hole in the seeds/grains, and lay their eggs inside the hole.
- TeacherWhat are we looking at here?
- Bugscope Teamthis is something we've found on these small beetles recently -- these tiny sensillae
- Bugscope Teamthis is on the shaft of a beetle's palp
- Bugscope TeamI am not sure -- I was thinking they are likely chemosensory sensillae
Bugscope Teamthat would be my guess as well
- Bugscope Teamif we went to a high mag we would see tiny pores at the tips of some of them
- TeacherWe have to leave now. Thank you so much!
Bugscope TeamThank You!
- Bugscope TeamThanks a lot!
- Bugscope TeamHope you had a good time.
- Bugscope Teamsee you next year!