The Difference Between Dragonflies and Damselflies

No other insects symbolize summer quite like the group of colorful, primitive-looking predatory insects we generally call dragonflies. In the late summer garden, they resemble tiny animal fighter jets, fierce-looking but also beautiful and fascinating.   In reality, these members of the insect order Odonata include not only the true dragonflies but also a closely related group known as damselflies. The order includes roughly 5,900 species, of which about 3,000 are dragonflies (suborder  Epiprocta, infraorder  Anisoptera), and about 2,600  are damselflies (suborder  Zygoptera). Dragonflies and damselflies are both predatory flying insects that look primitive and ancient because they are: fossil records show prehistoric species that are quite similar to modern species, although considerably larger. Modern dragonflies and damselflies are most prevalent in tropical regions, but some species can be found in almost every part of the world except for the polar regions.   Physical Characteristics Taxonomists divide the  Odonata  into three suborders:  Zygoptera, the damselflies;  Anisoptera, the dragonflies; and  Anisozygoptera, a group somewhere in between the two. However, the  Anisozygoptera  suborder includes only two living species found in India and Japan, which are rarely encountered by most people. Dragonflies and damselflies are often confused with one another because they  share many characteristics, including membranous wings, large eyes, slender bodies, and small antennae.  But there are also clear differences  between dragonflies and damselflies, outlined in the table below. In general, dragonflies are studier, thicker-bodied insects, while damselflies have longer, thinner bodies. Once the obvious differences  are learned—eyes, body, wings, and resting position—most people find it fairly easy to identify the insects  and tell them apart. More serious students of the odonates may want to examine the subtle differences in wing cells and abdominal appendages. Both dragonflies and damselflies are seen in a wide range of sizes and colors. Colors may be dull or brightly metallic hues of greens and blues. Damselflies have the widest range of sizes, with wingspans ranging from about 3/4 inch (19  mm) in some species to 7 1/2 inches (19 cm) in larger species. Some fossil Odonata ancestors have wingspans of more than 28 inches. Life Cycle Dragonflies and damselflies lay their eggs in or near water. Hatched larvae go through a series of molts as they grow, and begin predatory feeding on the larvae of other insects and on small aquatic animals as they move toward the adult stage. The Odonata larvae themselves also serve as an important food source for fish, amphibians, and birds. Larval dragonflies and damselflies reach adulthood in as little as three  weeks or as long as eight years, depending on species. They go through no pupal stage, but near the end of the larval stage, the insects begin to develop wings, which emerge as useable flight organs after the last molt of the larval stage. The adult flying stage, which can last as long as nine  months, is marked by predatory feeding on other insects, mating, and finally laying eggs in water or moist, boggy areas. During the adult stage, dragonflies and damselflies are largely immune to predators, except for some birds. Not only do these insects pose no danger to humans, but they consume large quantities of mosquitoes, gnats, and other biting insects. Dragonflies and damselflies are visitors we should welcome to our gardens.   Differences Between Dragonflies and Damselflies Characteristic Dragonfly Damselfly Eyes Most have eyes that touch, or nearly touch, at the top of the head Eyes are clearly separated, usually appearing to each side of the head Body Usually stocky Usually long and slender Wing Shape Dissimilar wing pairs, with hind wings broader at the base All wings similar in shape Position at Rest Wings held open, horizontally or downwards Wings held closed, usually over the abdomen Discal Cell Divided into triangles Undivided, quadrilateral Male Appendages Pair of superior anal appendages, single inferior appendage Two pairs of anal appendages Female Appendages Most have vestigial ovipositors Functional ovipositors Larvae Breathe through rectal tracheal gills; stocky bodies Breathe through caudal gills; slender bodies

Theu.s. B. Du Bois - 1428 Words

The slave business ensued for the reason that it became a practical and profitable business in the 1600 to1800’s. Many people have not considered the parts they play and how different they may be. The most obvious similarity between the two happens to be their eyes for profit .The men that entered the slave business did it for income. Despite this similarity, there remained three items that the two did not share, status being one. Another being that they had a completely different need of the slaves they dealt with. The final difference is that the slave owners paid for their slaves and the slave traders took the slaves and sold them to the Owners. There are a few people that discuss the differences and similarities between Traders and Owners: Howard Zinn is the main person that discusses this topic in his work A People’s History of the United States, but W.E.B. Du Bois also discusses it in his work, A Black Reconstruction. The Owners and Traders happened to be similar when it came to profit, but differed in class, occupation, and how they treated the slaves. Slave Traders and Owners share a major goal, revenue. Slave Owners intend to gain this profit from working their slaves. â€Å"Slavery was immensely profitable to some master. James Madison told a British visitor shortly after the American Revolution that he could make $257 on every Negro in a year and only $12 or $13 on his keep†(Zinn 33). Madison happens to be able to earn back the money he spent on his slavesShow MoreRelatedTheu.s. B. Du Bois1310 Words   |  6 PagesSame Ideas, Different Results For more than a hundred years, important African-American leaders such as Booker T. Washington and W.E.B. Du Bois have been both acclaimed and cherished in our society’s history books for their individual efforts in the struggle for the civil and political advancement of African-Americans. These two seem to be the main advocates for the advancement of African-Americans in the United States of American after the Civil War, but both had a different approach to it. AlthoughRead MoreTheu.s. B. Du Bois1443 Words   |  6 Pagesand sold them to the owners. There are a few people that discuss the differences and similarities between traders and owners: Howard Zinn is the main person that discusses this topic in his work A People’s History of the United States, but W.E.B. Du Bois also discusses it in his work, A Black Reconstruction. The owners and traders happened to be similar when it came to profit, but differed in class, occupation, and how they treated the slaves. Slave traders and owners share a major goal, profit

Illegal Accounts and Credit Cards

Question: Discuss about the Illegal Accounts and Credit Cards. Answer: Introduction: Wells Fargo, is known to be one of the consumer banks leading in the Unites states, has been penalized, to pay the amount of 185 billion dollars for the scam of forging the customers signatures and opening the illegal accounts and also credit cards through their names. From this article, one can know the type of culture that is promoted by playing tactics of aggressive sales and the scenarios that the bank had to face for the kind of actions carried by them which led to humiliation (Cowley, 2016). The consumer has to note and keep these tips in mind that while signing on for any of the additional products which are either needed or not by them: If at all your banker or the broker gives you a suggestion of additional services or the products which were not planned by you for signing up the document then you should stay away from it. It should be enquired by multiple queries and gather all the information regarding the product and give a deep thought about it as the product does not go anywhere it would stay in the bank (Cowley, 2016). After gathering all the required and necessary information, comparison of the product or the services that have been suggested with respect to the other providers and how it benefits you. For example, websites such as NerdWalllet and Bankrate can be used for comparing the bank accounts and the mortgage rates so that you can access how it is competing with your rates (Cowley, 2016). If any additional services are required by you dont make any payment for it. If your banker is giving the mutual-fund investment, the funds that are suggested might also include the commissions of up front or it might consist of some inbuilt charges which are needed for compensating the security units of the bank. If any of the investment assistance is not needed or required, then there are many other options available where investments can be made cheaply by purchasing the low-cost funds or the ETFs with the help of online mediators (Cowley, 2016). However, it is not easy for any of the consumers for not getting tempted about the convenience that is provided, especially when the bankers are aware of the various ways for attracting the customers during which they even try to hide their illicit actions. The role of the financial manager has been clearly depicted in this article by describing all their responsibilities with respect to the banking activities. Financial managers are the stakeholders who perform the data analysis and gives advice to the senior managers on the ideas that provide maximum profits to the bank. In maintaining the financial health of the organization the financial managers play a very important role. Financial reports are produced by them, the activities of the direct investments and the strategy development and the planning of the situations for achieving the long-term goals of the organization with respect to finance are the roles of the financial managers (Cowley, 2016). The typical role of the financial manager includes: Preparation of the financial statements, reports of the business activities and the forecasts, Monitoring of the financial details for ensuring that all the guidelines of the legal requirements are met correctly, The employees who perform the financial reporting and the budgeting are supervised by these managers, The financial reports of the company are reviewed and also finds the ways for reducing the costs for the consumers, For expanding the banking activities for benefitting the consumers they try to find out the opportunities as per the market trends or ideas for purchasing the other banking companies, For making the financial decisions they provide appropriate help But here the role of the financial manager seems to be changing with the response to the kind of advancement in the technology, which has significantly shown a reduction in the amount of the time taken for producing the financial reports. The key responsibility of the financial managers is to monitor the finances of the company, but nowadays they are involved in more of the data analysis and providing advices to the senior managers for making the ideas that would benefit them with more profits (Cowley, 2016). Even teamwork is carried out by them often where they act as the business advisors to the top level executives. Financial managers are also involved in the tasks that are specific to the particular organizations. Also, they should be aware of the special laws with respect to taxation and the regulations that would affect the industry in any illegal actions. References Alicia Adamczyk. Karen Damato. Lessons of the Wells Fargo Fake-Account Scandal. https://time.com/money/4485599/wells-fargo-cross-selling-scandal/.2016 Cowley, S. 2016.Wells Fargos Reaction to Scandal Fails to Satisfy Angry Lawmakers. [online] Nytimes.com. Available at: https://www.nytimes.com/2016/09/30/business/dealbook/wells-fargo-ceo-john-stumpf-house-hearing.html? [Accessed 17 Nov. 2016]. Source: Boundless. The Role of Financial Managers. Boundless Business. Boundless, 08 Aug. 2016. Retrieved 17 Nov. 2016 from https://www.boundless.com/business/textbooks/boundless-business-textbook/financial-management-19/introduction-to-financial-management-114/the-role-of-financial-managers-534-10164/