Difference Between Sawfly Larva and Caterpillar

Caterpillars are the larvae of butterflies and moths, which belong to the order Lepidoptera. Many caterpillars, while they do feed on leaves and plants, are considered desirable because, of course, they metamorphose into beautiful monarch butterflies, painted lady moths, and other decorative species. Sawfly larvae look similar to caterpillars but are an entirely different kind of insect. Sawflies are related to bees and wasps and belong to the order Hymenoptera. Like caterpillars, sawfly larvae usually feed on plant foliage, but unlike most caterpillars sawfly larvae can quickly destroy a rose garden or defoliate an entire tree. Identifying Sawflies Sawflies are flying insects that live all over the world. There are more than 8,000 species of sawflies, so called  because of the saw-like appearance of the female ovipositor, an organ used to deposit eggs in plant stems or leaves. While sawflies are related to stinging insects, they themselves do not sting. They feed on pollen and nectar, making them harmless to both people and plants. Sawfly eggs hatch into larvae which go through eight stages of growth. Typically, the larvae cluster together and are capable of eating an enormous amount of plant matter in a very short time. While sawflies are food for many animals in the wild, in cultivated areas they can be hard to manage. Sawfly management usually involves the use of chemical sprays. Sprays that work against caterpillars, however, are often ineffective against sawfly larvae. In addition, chemical sprays dont prevent sawflies from depositing their larvae. As a result, chemical sprays should only be used when larvae are actually present. How to Tell the Difference Caterpillars may have up to five pairs of abdominal prolegs (tiny, unjointed limbs) but almost never have more than five pairs. Sawfly larvae will have six or more pairs of abdominal prolegs. There are, of course, exceptions to every rule. Caterpillars of the family Megalopygidae, the flannel moths,  are  unusual in having seven pairs of prolegs (two more pairs than any other Lepidopteran larvae.) Some sawfly larvae are stem borers or leaf miners; these larvae may have no prolegs at all. Another notable difference, though it requires a closer look, is that caterpillars have tiny hooks called crochets, on the ends of their prolegs. Sawflies do not have crochets. Another, less obvious difference between caterpillars and sawfly larvae is the number of eyes. Caterpillars almost always have 12 stemmata, six on each side of the head. Sawfly larvae usually have just a single pair of stemmata. If You Have Sawflies If you have identified sawfly larvae on your trees, flowers, or foliage you may be able to simply remove them manually. If there are too many, youll probably need to spray. Choose your pesticide carefully or consult a professional: Quite a few common pesticides (such as the bacteria Bacillus thuringiensis) work only on Lepidopteran larvae, and will not affect sawfly larvae. Before you apply any pesticide for a caterpillar problem, be sure to count the prolegs and identify your pest correctly.

Gender Inequality Gender Pay Gap - 975 Words

The gender pay gap in Hollywood The gender pay gap is the difference in pay earned by men and the pay earned by women.( Pay Equity Commission, 2012). There are various ways in measuring the pay gap between genders, such as full- time or full- year wage. Statistics Canada data ( 2012) displayed that the gender pay gap in Ontario was 26% for full- time and full- year employments, which means for every C$1 earned by a man, a woman earned 74 cents( Pay Equity Commission,2012).The pay gap has been narrowing slowly over time compared to the how it was in 1987, which was 36%. However the gender wage gap is still a problem that exists in the society. I will discuss about the feminist theory and how it can be interpreted in the gender pay gap of our society, especially in regards to celebrities. In 2014, the Sony Hack revealed a paid list of the celebrities in the movie industry and discovered the equal pay difference between men and women. Hollywood was shocked at this revelation. The lists indicated that male actors were paid higher than the female actresses in the same movie, regardless of their role in the movie. After Sony’s email was hacked, Jennifer Lawrence spoke out about sexism in Hollywood through her essay entitled: â€Å" Why do I make less than my male co-stars?†( Lam, 2015). Through the Sony hack, Hollywood, a visibly huge and powerful movie industry, can be a role model for developing gender paid equality. Why does the gender pay and wealth gap exist nowadays? This isShow MoreRelatedGender Pay Gap And Gender Inequality2247 Words   |  9 PagesGender pay gaps are defined as the average difference between men’s and women’s aggregate hourly earnings. One of the largest driving factors of the gender wage gap is the fact that men and women, on average, work in different industries and occupations. Women in every state experience the pay gap, but in some states it is worse than others. 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Prescription Drug Abuse and Addiction Free Essays

These medications are prescribed by a physician and purchased at a pharmacy to treat cute or chronic pain (Byrne, Lander, Ferris, 2009). Description Prescription Drug misuse and abuse affects all members of society to include the rich and famous, homemakers, physicians, executives, teachers, the young and the elderly. The fact that the medications are self-administered substances prescribed to treat acute or chronic conditions contributes to the increased Incidence of Dalton (Wolfed, Appear, DuPont, 2011). We will write a custom essay sample on Prescription Drug Abuse and Addiction or any similar topic only for you Order Now There are some factors that affect the rated of prescription drug abuse such as older people and women are less likely to abuse drugs (Weaver, Jarvis, 2010). However adults that range In age thirty- five to forty-four have the highest drug abuse rates as wells as residences of the Southern and Western regions of the US (CDC, 2008). Rationale Everyday increasing amounts of the patients seek treatment in the emergency departments across the Valley of the Sun. These patients are actively seeking prescription painkillers. Some of the patients have legitimate pain issues but most do not. Many of the high emergency room utilizes are treated in over four different hospital emergency departments per week. Many have been caught altering, or forging prescriptions. Patients give explanations such as their medication was lost, stolen, or the pharmacist did not give the correct amount of drugs for the Increased frequency of the need for refills (Wilfred, Appear, DuPont, 2011). There are increased incidences of identity theft and patients using aliases to obtain prescriptions. How to cite Prescription Drug Abuse and Addiction, Papers