DragonflyThe dragonfly larvae (Anisoptera) develop and grow in streams, rivers, and lakes. That is the reason why we often see them near freshwater or above the water.
More than 70 species live in Croatia. They are all very different and have intensive beautiful colors.
It is interesting to take pictures of dragonflies because their wing complexity and color spectrum attracts the slides.
Stag BeetleKopački rit has a rich insect fauna. Unfortunately, little research had been done on insects and that is why insects are not that known to the public as other species are.
Apart from the well-known Stag Beetle (Lucanus Cervus), more than 40 dragonfly species, 85 scarab species, 35 day butterfly species, more than 60 nocturnal butterfly species, even 11 mosquito species and about 30 gadfly species. This is only a small part of what research is yet going to discover.
MosquitoesInsects with pair-scaled wings (Diptera) are one of the four most numerous orders among insects. The estimated number of insects with pair-scaled wings in the world is 85.000 species. They are divided into two suborders: thread antennae (Nematocera) and shortened antennae (Brachyacera).
Among all the families in these two suborders, mosquitoes (Culicidae) take special place because of their relation with man. This relation manifests in disease transfer and molesting effects. For this reason, mosquitoes have been studied in detail. About 3.300 mosquito species exist in the world, while 100 species are known in Europe. Fifty species have been recorded in Croatia among which 32 are in Slavonia and Baranja. Twenty –one species are known in Kopački rit.
Large nests are needed to produce a large number of mosquitoes. Floodplains like Kopački rit offer ideal conditions for the development of extremely large populations of wetland mosquitoes. Though Kopački rit has a large number of mosquitoes, the first study was published by Merdić. Research has been systematically done from 1990 until today, (adjourned during the War in Croatia).
Ground BeetlesGround Beetles (Carabidae) belong to the predatory scarabs that are usually on the ground because of their lifestyle.
They are prevalent in large numbers worldwide and are one of the largest scarab families. Even larger families are Snout Beetles (Curculionidae) and Leaf Beetles (Chrysomelidae). Ground beetles are divided into 5 sub-families: Cicindelinae, Omophorinae, Carabinae, Brachininae and Paussinae.
ButterfliesButterflies (Lepidoptera) belong to the most numerous group of insects. About 150.000 species have been described. Butterflies are divided into two groups: butterflies with club-shaped antennae that are active during the day (Rhopalocera) and butterflies with varied antennae (Heterocera) that are active during the night.
GadfliesGadflies (Tabanidae) are insects with pair-scaled wings (Diptera). They are usually strong flies that settle in different terrestrial habitats. The females drink blood and often transfer different disease agents. Gadflies disturb the livestock as they drink their blood during summer. Their bite is painful and the swelling can last for several days. Other flies gather on the swellings and infections can spread fast.
That is why research on gadflies is very significant from the veterinary and medical entomology’s point of view, especially from the middle of June to the end of August.