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A female black fungus gnat. A gnat ( / ˈnæt /) is any of many species of tiny flying insects in the dipterid suborder Nematocera, especially those in the families Mycetophilidae, Anisopodidae and Sciaridae. [1] Most often they fly in large numbers, called clouds. "Gnat" is a loose descriptive category rather than a phylogenetic or other ...
Insects do not have lungs; oxygen and other gases, such as carbon dioxide, pass through their exoskeleton via tiny valves called spiracles. Insects also lack closed blood vessels ; instead, they have a long, thin, perforated tube along the top of the body (called the "dorsal aorta") that functions like a heart, and pumps haemolymph toward the ...
Insects live in a world of motion. This leaf-footed bug climbs wind blown grass and flies off. Insects (from Latin insectum) are hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen ), three pairs of jointed legs ...
State insects are designated by 48 individual states of the fifty United States. Some states have more than one designated insect, or have multiple categories (e.g., state insect and state butterfly, etc.). Iowa and Michigan are the two states without a designated state insect.
Antenna (biology) Large antennae on a longhorn beetle. Antennae ( sg.: antenna ), sometimes referred to as "feelers", are paired appendages used for sensing in arthropods . Antennae are connected to the first one or two segments of the arthropod head. They vary widely in form but are always made of one or more jointed segments.
It is applied to infected soil and will kill fungus gnat larvae for 30–60 days from a single application. Its mechanism of action is to interfere with chitin production and deposition and it also triggers insect larvae to molt early without a properly formed exoskeleton, resulting in the death of the larvae. Although it is targeted at fungus ...
An insect uses its digestive system to extract nutrients and other substances from the food it consumes. [3]Most of this food is ingested in the form of macromolecules and other complex substances (such as proteins, polysaccharides, fats, and nucleic acids) which must be broken down by catabolic reactions into smaller molecules (i.e. amino acids, simple sugars, etc.) before being used by cells ...
A giant water bug attacking a fish. Insect ecology is the interaction of insects, individually or as a community, with the surrounding environment or ecosystem. [1]Insects play significant roles in the ecology of the world due to their vast diversity of form, function and lifestyle; their considerable biomass; and their interaction with plant life, other organisms and the environment.