We will continue with Heteroptera today!
Tingidae. The lace bugs. This name is very descriptive. They are dorsally, ventrally
flattened. They tend to be small. Their pronotum is hood-shaped, or crescent shaped.
Their dorsal surface is sculpted. The sculpt
Pine Valley: 7 to 9! You can come early as well. We will draw out some aquatic adults
Elmidae. The crawling water beetles. These are very small beetles (max: 3.5 mm).
Some what cylindrical. The tarsal formula is 5-5-5. They have filiform antennae.
Predators and parasitism! Insects that utilize other insects one way or another in terms
of a food resource. The distinctions can get really fuzzy really fast. They are not
Predatorkills and consumes more than one prey item in order to sustain
SIt and Wait. It limits the energy you have to spend chasing things down. Usually they
find some sort of suitable habitat and wait for the prey to come within striking
distance so they are not wasting too much energy. Many of them wi
Remember from lesson I; we discussed roman numeral I.
II. insect diversity. There are about one million insect species described. Depending on
who you talk to, there are anywhere between 3 and 80 million species left to be
described. About 40% are the bee
Coleopterans! What is common among them? They are mandibulate. They have elytra.
That is what makes it a beetle.
Adephaga. When looking for the suture line to distinguish this suborder in a key, look in
19.3. They have a ridge on the ventral side of the p
Mutillidae. Velvet Ants. It is not actually an ant. It is a type of wasp. The females don't
have wings at all. The males do. They range in many colors. Black/white ones are
called panda ants. Their sting is one of the more painful stin
We are supposed to have a lecture quiz next week on Tuesday; we are moving back to
Thursday! We will try to go out and collect next Monday.
Chapter 9. Pollination! ~Insects and plants~
There are a myriad of ways that this relationship has cultivated over
Atypical pollination examples.
Pseudocopulation. This is between male wasps (Tiphilidae) and orchids. It is an
example of chemical mimicry. The orchids emit a chemical that is very similar to the
pheromone secreted by female wasps. The males are lured to
External plant feeders: sap suckers.
We were talking about phytophagy and leaf eaters. In comparison to leaf chewers, the
structural damage done by sap suckers is usually a little less obvious on the plant. Leaf
chewing insects leave major losses of tissu
Next Friday (the 25th) we will meet at dusk, around 7ish to 9ish.
Plant Defenses. We can't leave out the counter adaptations that plants have against the
things that go about munching on them. Why is the world green if the plants are eaten
so much? There
Do not put our nets into a stream! Nets with a mesh are aerial nets. They are good for
flying insects. The cloth nets are sweep nets. Sweep nets are good for beating
Systematics! This is from chapter 16 in our book.
I. Arthropoda. The textbook
Article 1 is posted! Read it! Next thursday is the first lecture quiz. There will be a review
guide for us.
We will finish the systematics notes. We finished with neoptera last time. Classification
within and among groups is debatable. There are three rec
Protura. The first three orders are at the base of the insect tree. These are part of the
non-insect hexapods. They are all small and white or clear. Protura are fusiform
shaped (like a torpedo) with a cone-like head. That shape is NOT found anywhere else
Crane flies have longer legs than mosquitoes. The mesontum has a V-shaped suture,
which helps distinguish them from mosquitoes.
Asilidae. These are the robber or assassin flies. They have aggressive eating habits.
They wait and ambush their prey in flight
More on integument!
Sclerotization! The proteins and chitin fibers become cross linked. The chitin also
becomes dehydrated as part of the process. The orientation of the chitin fibers changes
with each layer that becomes sclerotized (can be used to age in
The next article will be discussed the Monday after break.
Homometaboly. Complete metamorphosis. In this case the immatures are called
larvae. Unlike nymphs, these are drastically different from the adults. They have
concealed wing buds. On a nymph or nai
Aquatic insects. Chapter 8 (towards the end).
Introduction. Most of the invertebrates in aquatic habitats are insects. There are some
nematodes in water as well. They are an understudied group. They might rival insects,
but we don't know enough about them
We need to talk about carrion, decomposing animal parts. If you have invertebrate
carrion, most of that is consumed by the ants. We are going to focus on larger scale of
decomposition in all of its glorious stages. With vertebrate carrion, there are more
There are two orders grouped with the orthopterans. With the exception of the mantids,
the rest of the taxonomy within the group is pretty messy.
Phasmatodea (Phasmida). We'll start with the walking sticks. They are also called the
stick insects. The text
Bring extra jars for monday's lab. A bag of some sort is handy to take into the field.
Bring water, hat, sunscreen. Long pants would be recommended.The copperheads
have been prolific this year. Bring your field notebooks. We will meet in the lab first.
ID quiz is 24 blank lines. We go through the lab and identify specimens.
We will finish up external morphology today. Today is the thorax!
The thorax is 3 segments that have been fused together. It is associated with
movement. The legs are attached to it.
Romalea microptera. These can get up to 5 inches long. They are distinctive. The only
species found here. The other species, the horse lubber grasshopper, is only found in
the southwestern US and Mexico. The other species are only foun
We just have to know the groups that we covered in class.
Let's talk about our first ecological area, the soil! These are the ground-dwelling
hexapods. A column of soil from the ground is a stratified environment, which has many
niches for insects to inha