| Bidessus | |
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| Bidessus unistriatus (Schrank, 1781) | |
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| Genus: | Bidessus Sharp, 1882 |
Bidessus is a genus of beetles in the family Dytiscidae, containing the following species: [1]
Beetles are a group of insects that form the order Coleoptera, in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently. The largest of all families, the Curculionidae (weevils) with some 83,000 member species, belongs to this order. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops.
The Dytiscidae – based on the Greek dytikos (δυτικός), "able to dive" – are the predaceous diving beetles, a family of water beetles. They occur in virtually any freshwater habitat around the world, but a few species live among leaf litter. The adults of most are between 1 and 2.5 cm (0.4–1.0 in) long, though much variation is seen between species. The European Dytiscus latissimus and Brazilian Megadytes ducalis are the largest, reaching up to 4.5 cm (1.8 in) and 4.75 cm (1.9 in) respectively. In contrast, the smallest is likely the Australian Limbodessus atypicali of subterranean waters, which only is about 0.9 mm (0.035 in) long. Most are dark brown, blackish, or dark olive in color with golden highlights in some subfamilies. The larvae are commonly known as water tigers due to their voracious appetite. They have short, but sharp mandibles and immediately upon biting, they deliver digestive enzymes into prey to suck their liquefied remains. The family includes more than 4,000 described species in numerous genera.
- Bidessus alienus Zimmermann, 1919
- Bidessus anatolicus Wewalka, 1971
- Bidessus apicidens Biström & Sanfilippo, 1986
- Bidessus bertrandi Biström, 1988
- Bidessus cacozelus Omer-Cooper, 1931
- Bidessus calabricus Guignot, 1957
- Bidessus ceratus Guignot, 1941
- Bidessus complicatus Sharp, 1904
- Bidessus coxalis Sharp, 1882
- Bidessus cretensis Fery, 1992
- Bidessus decellei Biström, 1985
- Bidessus delicatulus (Schaum, 1844)
- Bidessus excavatus Biström, 1984
- Bidessus exornatus (Reiche & Saulcy, 1855)
- Bidessus fraudator Omer-Cooper, 1958
- Bidessus fulgidus Omer-Cooper, 1974
- Bidessus funebris Guignot, 1959
- Bidessus glabrescens Biström, 1983
- Bidessus goudotii (Laporte, 1835)
- Bidessus grossepunctatus Vorbringer, 1907
- Bidessus imitator Omer-Cooper, 1953
- Bidessus longistriga Régimbart, 1895
- Bidessus minutissimus (Germar, 1824)
- Bidessus muelleri Zimmermann, 1927
- Bidessus muluensis Omer-Cooper, 1931
- Bidessus mundulus Omer-Cooper, 1965
- Bidessus nasutus Sharp, 1887
- Bidessus nero Gschwendtner, 1933
- Bidessus nesioticus Guignot, 1956
- Bidessus occultus Sharp, 1882
- Bidessus omercooperae Biström, 1985
- Bidessus ovoideus Régimbart, 1895
- Bidessus perexiguus H.J.Kolbe, 1883
- Bidessus pergranulum Biström, 1985
- Bidessus perrinae Biström, 1985
- Bidessus perssoni Biström & Nilsson, 1990
- Bidessus pumilus (Aubé, 1838)
- Bidessus rossi Omer-Cooper, 1974
- Bidessus rothschildi Régimbart, 1907
- Bidessus ruandensis Omer-Cooper, 1974
- Bidessus saucius (Desbrochers des Loges, 1871)
- Bidessus seydeli Biström, 1985
- Bidessus sharpi Régimbart, 1895
- Bidessus sodalis Guignot, 1939
- Bidessus straeleni Omer-Cooper, 1974
- Bidessus toumodiensis Guignot, 1939
- Bidessus udus Biström, 1985
- Bidessus unistriatus (Goeze, 1777)
- Bidessus wilmoti Biström, 1985
