Please note that many different insects produce
venoms in various forms and toxicities. Although most humans may not be
seriously affected by most insect venoms, YOU may be sensitive or even allergic. A severe allergic reaction
to the smallest bite can be life-threatening. Therefore, you should exercise care
whenever handling "harmless" or unknown insects, and exercise extreme care when
dealing with those whose venom is known to be potent.
A binomial ("bi" = two, "nomial" = name)
consists of Genus & species and forms the basis for any
taxonomical (classification of living organisms) system
(including plants, animals, fungi, bacteria, viruses, and
protists). If the first part of the name matches in any two
plants, they are closely related (same Genus). If the second part
of any two plant names match it only means they share that
characteristic, it does not mean they are the same species or
even distantly related.
The taxonomy of plants on this page is displayed in the following
way:
The larval form of the Ant Lion lives at the bottom of those
small ½-inch to 1-inch diameter) conical depressions seen in protected areas of
fine, soft soil. If you look carefully at the deepest part of the pit you can
sometimes see the head and jaws of this insect. When a small insect (yes, ants too)
fall into its pit it paralyzes them with venom, and then slowly sucks out the body
fluids. The larval form is known in many regions as a "doodle bug".
The adult form of the ant lion resembles a flying ant, but with a long, narrow
abdomen. The 2 pairs of veined, transparent wings are large for its body and fragile.
Adult ant lions are common around lights during warm nights. It never bites nor
stings humans.
Bumblebees live in annual colonies, with a queen and workers,
and, except during winter, are frequently seen in the Cerrillos Hills. They inhabit
primarily the northern temperate regions, though there are a few native South
American species and they have been introduced elsewhere as a pollinator (such as
New Zealand). They range much further north than honey bees, and colonies can be
found in far northern Canada.
In the fall a young queen will mate with a male. The male dies shortly
thereafter. The young queen alone will survive the winter. With the arrival of
spring the queen starts a new colony in a ground cavity, often using the disused
hollow nest of some other bee. She lines the nest with plant material, and an egg
cell is prepared with a supply of pollen for the developing larvae. With wax she
constructs a honey-pot, which is her food supply as she guards the nest and waits
for the larvae to mature.
On some flowers bees perform vibration pollination. The bee vibrates its abdomen
and thorax at high frequencies (between 320 and 410 Hz), which causes the anthers
of several different types of flower to shed pollen, dusting the bee's body.
Apoidea have characteristic plumose (long and dense) hairs for carrying pollen on
their bodies, and you may also note loads of yellow pollen on their hind legs.
The Centipede is normally active at night, spending the daytime
hours beneath a rock, a log, or other cover. If exposed during the day it will
rapidly and sinuously seek new cover. Centipedes are voracious predators and
subsist on a variety of insects, spiders and arthropods. Adults, commonly 4-inches
long, molt once a year, and can live well over 5 years.
The bite of a centipede can be painful, but rarely results in human death.
How may legs does a centipede have? Not 100! (Trick question.) It has 22 segments
to its body, and 21 of them (the head excepted) have a pair of legs each.
Forty-two legs in all.
The adult form of this flightless black beetle is identified
by its long, wand-like horns (segmented antennae) and its very hard exoskeleton
(shell). It has a protective resemblance to the Penacate stink Beetle.
The Cholla beetle larva, a grub with a brown head, feeds on cholla stems
and roots. The adult beetles may be found feeding on the fleshy parts of
cholla, prickly pear,
and other cacti.
Adult Cicadas are usually most noticed for their long loud
buzzing calls. In the summer in the Cerrillos Hills there may be so many cicadas
calling from their perches in trees that it may be difficult to hear anything else.
When disturbed, you will see a 2-inch long bulbous green insect fly quickly to safety in a nearby tree. If you're very good at it you can identify different species by their calls.
The adult female cicada makes a slit in the bark of the tree or shrub into which
it deposits its eggs. The nymphs (the form that emerges from the egg) hatch out
and fall to the ground where they burrow in.
Cicadas are capable of living beneath the soil for many years, feeding mostly on
tree roots. One species is known to spend 17 years underground! Finally, one warm
evening, they emerge, climbing up onto the plant, and there they shed and become
adults. The adult form occurs at the end of the life cycle; once an adult, cicadas
rarely survive more than a month.
Earwigs are long (¾-inch to 1-inch) brown insects with
a set of "pincers" at the end of their abdomen. They prey on other insects, and
if provoked are capable of producing an offensive odor.
There are many species, but the common one, the Riparian Earwig, was introduced
to New Mexico from Europe.
Grasshoppers are oviparous (egg-laying) herbivores
(plant-eaters). The female Pallid-Winged Grasshopper may deposit up to 20 masses
of 200 eggs each into the soil, where they remain over the winter. Nymphs become
adults in early summer. There is one life cycle per year. The Pallid-Winged ranges
from Canada to central Mexico.
Gray or grayish-brown, these insects are about 1½-inches long, and
may be seen in great numbers as you walk across a vegetated area
Pinacate Beetle [Eleodes spp.]
Darkling Beetle or Stink Bug
This black beetle is a common sight in the Cerrillos Hills as
it wanders fearlessly about in broad daylight. If disturbed it will raise its rear
end into the air and excrete a foul-smelling substance, hence the name " stink bug".
Pinacatl is the Nahuatl (central Mexican Indian) word for
"black beetle". The larvae live in the soil where they feed on dead plant material.
Most animals avoid contact with this beetle because of its ability to
produce a stinky secretion. Grasshopper mice, however, get around this
inconvenience by seizing the beetle, jamming its rear end into the sand, and
eating it head first. Other predators include some owls, shrikes and skunks
(another well-known stinker).
The Praying Mantis, which may be brown, tan or green depending
on species and surroundings, gets its name from its characteristic stance --
partially upright with forelegs together in front -- as it waits to pounce on its
next meal. Mantises are solitary, slow moving, completely harmless to humans, and
are extremely beneficial because they eat so many other insects. And, very unusual
for an insect, they can actually turn their heads!
Nymphs are dispersed by wind or eat one another. Mantises matures in late summer
or early autumn and live for one season. At night, Praying Mantises are sometimes
seen near artificial lights, attracted by the swarming food supply.
These large black wasps can be 3-inches long, and are most
distinctive when in flight for their display of deep-hued orange or red-orange
wings.
Female Tarantula wasps first dig a burrow into the ground up to 24-inches
deep. Then they cruise about until they locate a tarantula,
which they paralyze with venom from their stinger. The paralyzed tarantula is
dragged back to the burrow, an activity which can take many hours. Once in the
burrow, the wasp lays a single egg on the spider, and then plugs the entrance to
the burrow. The carcass of the immobilized tarantula soon becomes the new wasp
larva's food supply. The male wasp has no stinger, and relies upon warning
coloration and an unpleasant smell for protection from predators.
This insect is the answer to the often-asked question, "What is the state insect
of New Mexico?"
The Velvet Ant is not an ant, it is a wasp, but it looks like
a largish, fuzzy, bright-red ant. There are many different species and they come
in many colors; red is common in the Cerrillos, but orange or yellow or gold, or
even white are possible. Males are winged; females are wingless.
The stinging female Velvet Ant captures the nest of another wasp species and lays
its eggs on the immobilized previous occupant. You should not try to handle this
insect as the sting can be quite painful.
Walking Sticks are usually found by accident, because they so
resemble a bush twig that you can look right at one and not see it on the plant.
Walking Sticks rely on invisibility to survive. They are slow moving plant feeders.
Some varieties live on one specific plant.
Males are thinner than females. Walking Sticks are sometimes capable of regenerating
a missing leg.
The glossy-black hairless female spider with the bright red
hourglass design on the underside of her abdomen spins loosely-connected webs
around wood piles, rocky areas, rodent holes, and in the darker recesses of houses,
in which web she catches other insects. The female's normal resting position is
upside down. The much smaller and drabber male is born only to mate and die, and
has such a short moment upon the stage that it doesn't require a single meal.
Male Black Widow spiders do not eat. On occasion, after mating, the female will
consume the smaller, now useless male.
The cottony-white egg sack may contain around 200 eggs, and several eggs sacks
may be produced in a year. The Black Widow's venom is quite potent, and they
should not be handled.
The range of the (in)famous brown recluse spider
L. reclusa does not normally extend as far west as New Mexico, except for
the southeast corner of our state. Other Loxosceles
species, such as L. apachea have been reported as far
north as Sandoval County.
Recluse spiders are small, dark brown or tan, and have the outline of a fiddle
(or violin) on top. They prefer to stay in dark areas beneath decaying vegetation,
old wood or other debris.
The bite of the Recluse spider normally causes a welt that may develop into a small
ulcer. Recluse venom is not as potent as that of the Black Widow, but, like the
Black Widow, it should not be handled.
Everyone knows these large hairy spiders. During mating season,
September and October, it is not uncommon to find male tarantulas moving across
open ground, day or night, in search of a female. Tarantulas live in web-lined
burrows, and they subsist mostly on insects. They can bite if handled, but their
venom is weak and is superficial (it is not injected).
Tarantulas are the prey of many creatures, but especially of the
tarantula wasp.
EASY FIELD GUIDE TO COMMON DESERT INSECTS, Richard & Sharon Nelson, American
Traveler Press 1996
This website is maintained by the Cerrillos
Hills Park Coalition
and is dedicated to the creation, enhancement and stewardship
of an historical, recreational, and cultural open space in
the
Cerrillos Hills, Santa Fe County, New Mexico, USA