Biodiversity Sampling Insect

Insect are the dominant group exist on the earth, in terms of both taxonomic diversity and ecological function. Probably slightly over one million species of insects have been described and recorded. Insects can be categorized in several orderstand out for their high species richness, the beetles (Coleoptera), flies (Diptera), wasps, ants, and bees (Hymenoptera), butterflies and moths (Lepidoptera), and the true bugs (cicadas, aphids, planthoppers, leafhoppers, shield bugs) (Hemiptera). The beetles comprise almost 40% of described insects meaning about nearly 400,000 species, while the Hymenoptera have nearly 130,000 described species, the Diptera have 125,000 described species, the Lepidoptera have 175,000 described species, the Hemiptera

However, the same overwhelming diversity means that valid and useful results will only be obtained if studies are properly planned. Therefore, the planning method for biodiversity sampling of insect population are needed in extra attention. Biodiversity sampling is a basic activity in community ecology, but it is time-consuming and labor-intensive (Lawton et al, 1998). Sampling insects requires knowledge of their biology, preferred habitats and activity patterns. Like most invertebrates, many insects show oscillating population densities with cycles from 3 up to 10 years (Hunter & Price, 1998). In low density years, species populations are difficult to measure and might give the impression that the habitat represents suboptimal conditions. In temperate and tropical climates, insects show a specific annual activity pattern, often referred to as phenology (Tauber & Tauber, 1981) while in temperate regions these patterns are triggered by photoperiod in combination with temperature and humidity (van Asch & Visser, 2007), which renders species being most active during spring, summer, autumn, and even

To date, more than one million insect species have been described and many millions await discovery (IISE, 2012). Insects have high intellectual and economic value, supporting and providing livelihoods for numerous people. These range from the silk trade to beekeeping and the pollination of most of our fruit and other agricultural produce. The description of insects and their colourful body patterns have initiated prominent contributions to art, literature and culture, and they offer great educational tools (Pyle et al., 1981). Insects are extremely important ecosystem components. They perform many key ecosystem functions, commonly relating to interactions with the vegetation. These interactions include herbivory and many mutualistic relationships such as pollination, seed dispersal and decomposition (Qin & Wang,