Difference Between Spiders & Opiliones Introduction Although spiders and opiliones are arthropods and belong to the same animal class – Arachnida – opiliones are not spiders. Opiliones, sometimes mistaken for spiders, are known by some as “harvestsmen;” others call them “daddy longlegs.” Spiders in the family Pholcidae are also called “daddy longlegs,” but they are more commonly known as “cellar spiders.” (3) People confuse these two long-legged arachnids, and while they may look similar, numerous differences have been discovered and observed in all aspects of their lives. Body Spiders have two visible body segments – the cephalothorax, which is the rounded head section, and the cylindrical abdomen. (2) The opiliones’ body appears to have a single oval-shaped body segment, but this is because a junction is difficult to discern between the head section and the abdomen. (3) Spiders vary widely in size, but the average cellar spider’s body length is under half an inch and its legs are up to 1.25 inches. By comparison, opiliones, or harvestmen, have a body length of about half an inc...
This story is about a hungry spider that wanted to eat at all the feasts in different villages. For the spider to be able to do this he left ropes at each village and when there is a feast, the villagers are instructed to pull the rope. The unexpected thing that the spider did not know was going to happen was that every village food was ready at the same time, and the spider had the rope tied around his waist. Due to the villages food ready at the same time the spider was pulled in all directions and was not able to eat any of the food. The novel’s purpose of this fable is to tell a story of why do spiders have small waist, but it is also supposed to show the both Ishmael and the audience that live is unpredictable even when things are
There is no doubt that arthropods are an extremely successful group of animals, with an estimated 5-10 million species worldwide[1], and this can be attributed to having an exoskeleton; it provides many benefits, such as protection from parasitism and other threats. However, one major disadvantage of having an exoskeleton is the limitations that an inelastic cuticle can place on growth. The exoskeleton provides protection, but when freshly moulted the animal is soft and vulnerable, as well as having limited mobility and use of appendages; many seek shelter before moulting[2]. There are similarities and differences between the moult cycles of all the arthropods, however only crustaceans and insects will be discussed here.
I learned that the phylum Annelids can consist of many creatures such as earthworms, leeches, and scale worms can adapt to a variety of environments. Annelids’ bodies are divided into segments which are seen as rings by the naked eye. They have muscles which help them move by contracting their longitudinal and circular muscles. When Annelids take in food, the food particles travel through one end of the body and are excreted out the other side. The video enhanced my understanding about Annelids because without seeing different species and what classified them as Annelids I would have never known an earthworm or a leech fell into that phylum.
Background Information: Pillbugs are terrestrial Isopods which belong to the Class Crustacea. Appearance: flattened or rounded back, seven pairs of legs, sharp – angled antennae. Pillbugs have a set of overlapping gills on their underside. There are 12 different species of pillbugs found in the northern and central United States. However, there are nearly 4000 described species of pillbugs. They are fund in humid areas, compost piles, and leaf litter. They feed on dead vegetation such as wood and leaf litter. They cannot survive below -6.0 C, so they burrow 60 cm below the ground surface to reach safe temperatures. They reproduce during the months of May through September. If the pillbugs are irritated they will frequently exude a thick glue which serves to entangle predators, such as ground beetles, centipedes, and spiders.
With the ever-increasing problem of pest control, it is clear that some form biological must be implemented in order to help farmers. This biological control must be able to effectively control the pest population, this means not killing them but rather never letting the pest populations get too large. Through computer-simulated programs the Spider Division of Frankenstein, Inc. was able to genetically create a spider that genetically perfect for biological control. This paper will discuss the methods that were taken as well as the results of the Spider Divisions experiment.
The brown spider monkey is a species of spider monkey that inhabits areas of the continent of South America. The scientific name of the spider monkey is Ateles, while that of the brown spider monkey is Ateles hybridus. The habitat of the brown spider monkey consists of the undisturbed evergreen rainforests located in the subtropical and tropical lowlands of both Colombia and Venezuela. There are two subspecies of the brown spider monkey, Ateles hybridus hybridus and Ateles hybridus brunneus. (According to_____) Hybridus hybridus inhabits both Colombia and Venezuela in rainforests extending from the right of the banks of the Rio Magdalena River into western Venezuela. The latter subspecies, on the other hand, can only be found in the Colombian geographic departments of Bolivar, Antioquia, and Caldas. Brown spider monkeys reside mainly in the high canopy of the rainforests though they can also be found in the middle and lower strata. To travel the brown spider monkey hangs, swinging from branch to branch, rather than walking or running on all fours. The brown spider monkey is very well...
Jeremias Gotthelf ‘s novella, “The Black Spider” is a highly ideological story of an evil poisonous black spider that wreaks havoc and death upon the villagers. It begins with a picturesque framework of a christening party on a farm, during which a guest notices and inquires about an incongruous black post on a newly built house. The grandfather then tells a story about a tyrannical knight by the name of Hans von Stoffeln who imposed impossible burdens upon the villagers and of the devil that appears as a huntsman to be their savior. One villager, Christine, agrees to the devils proposal, thinking she can outwit him. However, her betrayal unleashes an uncontainable and perpetual evil upon their town.
Fox, R. 2001. Invertebrate Anatomy OnLine: Artemia Franciscana. Lander University. http://webs.lander.edu/rsfox/invertebrates/artemia.html, retrieved February 13, 2011.
There are nearly one million species of insects known. Insects are defined by having six legs and a body divided into three segments: head, thorax, and abdomen. Chitin is an organic material that makes up an insects exoskeleton. There are three life cycles of insects, ametabolous or incomplete and paurometabolous or gradual, and homotabolous or complete metamorphosis. These life cycles are important in the aging of insects for aiding in legal investigations, (Houck and Siegel. Entomology).
Odonata, typically called Odonates, are usually found close to bodies of water, looking for small insects to eat. Adult Odonates catch their prey while in flight, while younger Odonates, called nymphs, hunt for their prey at the bottom of the body of water they live in. Nymphs eat almost any insect small enough for them to digest (book on iCloud).
Some characteristics belonging to the include a fenestrated lacework of bone on the lateral surface of the maxilla, a snout tapering in width anteriorly, a tendency toward reduction of the palatine component of the palate, a present supraorbital process of the frontal bone and the tendency toward the loss of the posterior mental foramen with the cranial characteristics (Dawson 2008). Some postcranial characteristics that differ between the Leporidae and the Ochotonidae include the location of the vertebrarterial canal, the number of thoracolumbar vertebrae, the number of fused sacral vertebrae, the fusion of the pelvis at the pubic symphysis and fusion of the cuneiform to the metatarsal in the Leporidae. The postcranial characteristics between the two of them include evolutionary changes in the skeleton associated with either short bursts of locomotion or rapid, sustained bounding locomotion. When comparing living ochotonoids and leporids, the living ochotonoids are much more homogenous in size and tarsal morphology. Along with the dental identification, these skeletal characteristics aid in the identification of families, genera and species. One of the main defining features of lagomorphs is the calcaneal canal passing diagonally through the talus (if talus is present) (Rose et al. 2008). While it is typically present in both the Ochotonidae and Leporidae, it is
The tarantella has a very interesting history. Its name derives from a little southern town of Italy called Taranto. It was believed that if a spider called the tarantula bit the townspeople, the only way to survive its bite was to do a dance called the Tarantella. The locals believed this was the only cure. If the people bitten did not dance they would suffer severe pain, muscle spasms, vomiting; most eventually died.
Many people claim to be afraid of spiders, but probably not to the degree of 37-year-old "Mary Muffet" of Seattle. Mary went to many lengths to be spider-free, including sealing her windows and doors with duct tape, spraying her car with bug killer, and putting every single piece of washed and ironed clothing into its own sealed plastic bag. She wasn't just afraid of spiders; she had arachnophobia, a phobia, not to be confused with a simple fear. Phobias are not simple; they are complex in both their origin and diagnosis, with many types that people suffer from and any number of treatments exist to date.
The researchers had a very extensive method in order to get the best results for their experiment. First, they collected 19 participants from the University of Kaiserslautern. Then, the participants were asked to described themselves as highly fearful of spiders or not. From ...
Ants, Little but Mighty. What is an ant? Ants are insects, they have six legs and each leg has three joints. Ants legs are very strong.