The floorboard of fireflies, there are about 2000 species in the world, distributed in tropical, subtropical and temperate regions. According to the statistics of several domestic experts, there are about 100 species found now, plus undiscovered species, there are more than 50 species in total. To shine at night, it can be divided into two kinds: aquatic and terrestrial. Small to medium-sized, long and flat, with soft walls and coleopters. The back plate of the chest is flat and often covers the head. Small head. The eyes are hemispherical, and the eyes of males are often larger than those of females. The abdomen has 7-8 segments, and there is a luminous body below the end. Yellow-green fluorescence produced by the reaction between fluorescein and luciferase in vivo.
Fireflies are about 0.8 cm long, flat and slender, with a small head, soft body walls and coleopters, and a large bra covering the head. The antenna of male worm is long, 1 1 node, flat or serrated; There are 6~7 webbed abdomen, with luminous body at the end, which can emit fluorescence; Most males have wings. Female insects have no wings, their bodies are bigger than those of male insects, and they can't fly, but their fluorescence is brighter than that of male insects.
1, life history
Fireflies belong to complete metamorphosis. They go through four stages: egg larvae and pupae adults. Aquatic fireflies usually complete in four months 1 generation, and 1 year has two generations. Terrestrial fireflies, on the other hand, need 1 year to complete 1 generation. Larvae need to molt 6 times from hatching to pupation, and the pupation duration varies from species to species, up to more than 40 days. The life span of adults in the field is generally 3-7 days, but some of them are as long as 20-30 days.
2. Living habits
Habitat:
Fireflies are divided into terrestrial and aquatic types according to their living environment, with the former accounting for the majority. Terrestrial firefly larvae mostly live in places with high shelter, lush herbaceous vegetation and high relative humidity, and each state of aquatic fireflies has different ecological habitats; The pupa stage is spent in water. Adults enter the open water above the water surface and plants near the water, and their eggs are laid on the shore.
3. I-word duration
According to different species, the activity time of fireflies is different. There are diurnal species and nocturnal species day and night, and nocturnal species appear from 18 to 3 or 4 am. Generally speaking, most species start to move after sunset, and most stop at 20 pm and 2 1 point. Firefly larvae appear at night almost as long as adults, but they can move all night.