This web site is funded by region viii epa section 319 funds administered by the north dakota department of health. Apart from a few aphids living on the aerial parts of water plants, the hemiptera associated with water belong to two series of heteroptera. As predatory hunters, pleidae consume the body fluids of small invertebrates. Cook, in ecology and classification of north american freshwater invertebrates second edition, 2001. The key to all family, genera and species of aquatic hemiptera are. The 1st gonapophysis of species in the genus neoplea esaki and china, 1928, includes a pattern of spurs that aids in depositing eggs into plant tissue. They are the largest insects in the order hemiptera.
Aphelocheiridae, notonectidae, pleidae, helotrephidae, mesoveliidae, hydrometridae, veliidae, gerridae, and hermatobatidae. Belostomatidae 3, corixidae 41, gelastocoridae 1, gerridae 8, hebridae 2, hydrometridae 1, mesoveliidae 1, nepidae 2, notonectidae 6, pleidae. A new genus and species of pleidae hemiptera from venezuela, with notes on the genera of pleidae. The biology of the semi aquatic hemiptera is treated. Ninetyfive species of aquatic and semiaquatic heteroptera are recorded from the prairie provinces of canada, representing the following families. Pleidae article about pleidae by the free dictionary. Their life cycle includes three stages egg, nymph which looks like a small adult and adult. Nepomorpha the nepomorpha are divided into four superfamilies. Veliidae and gerridae, belostomatidae, nepidae, notonectidae and pleidae. Morphology of the 1st gonapophysis in the genus neoplea hemiptera. In contrast, most semiaquatic species of hemiptera have antennae longer.
Pdf species diversity of aquatic hemiptera and coleoptera. A common feature of the order hemiptera is the elongated beak modified mouthparts that projects from the head. In 2002, this hypothesis was confirmed by marsollier et al. Heteroptera entomology and nematology department university. The pleidae hemiptera, heteroptera of thailand, with the. An example of a pygymy backswimmer habitat is a suburban pond with abundant filamentous algae. Small lake in high water bed of psel river near villages perevoz and sav intcy poltava region. A total of 8 families, 25 genera, and 33 species are recorded from the island. Small lake in high water bed of severskij donets river near village cherkasskij bishkin, kharkov region. Small lake in high water bed of severskij donets river near village morozo vka, kharkov region. As opportunity occurs, the author hopes to supplement them with diagnoses of further species inhabiting the fresh water creeks and ponds of new south wales, and, if possible, of those of the. The most recent studies have water bugs hemiptera heteroptera, infraorder nepo increased the taxonomic coverage and refined the set of morphological characters used over previous efforts and also introduced cladistic methods in the study of the correspondence. Common true bugs and related insects orders hemiptera.
The biology and ecology of aquatic and semiaquatic hemiptera. Notonectidae with four genera, including 11 species, are well represented. This genus is com1opolitan in distribution and contains more than 120 species all over the world. Hebsgaard, department of zoology, systematics of the nepomorpha rieger.
The families of other groups are semi aquatic, for example, hebridae, saldidae, and ochteridae. It is reported to be feeding on tadpoles, nymph of mayflies and other aquatic hemipteran groups and during dry seasons it is known to migrate in search of suitable areas. Selected references for identification of florida heteroptera. The genus paraplea is the most widespread genus in pleidae with 19 valid species. These photos supplement pages 97103 of the guide to aquatic invertebrates of the upper midwest. Ecology and zoogeography of aquatic hemiptera from. Pleidae are represented by one genus comprising two widespread species. Phylogenetic inference as applied to the study of evolutionary diversification of semi aquatic bugs hemiptera. Techniques of waterresources investigations of the united. These bugs live in shallow lakes and ponds that support emergent aquatic vegetation, such as cattails. Anisops sardea, laccotrephes brachialis, mesovelia vittigera and the remainder of the fauna consists of a few endemic. Helotrephidae is generally accepted as the sistergroup of pleidae 22,23,25,26, so we reasoned that including the sistergroup of pleidae was the best way to break up the long terminal branch leading.
In contrast, most semiaquatic species of hemiptera have antennae longer than their heads see figure 7. Key to california semiaquatic and aquatic hemiptera based on habitats and habits. Only one genus of pigmy backswimmer is found in north dakota, neoplea. Hemiptera heteroptera encompasses the three welldefined suborders of the true bugs which are adapted to an aquatic or littoral habitat. Entomological investigations carried out from 2002 to 2010. Family pleidae genus list vcsu macroinvertebrate lab. The semiaquatic and aquatic hemiptera of california. Order hemiptera family pleidae the pygmy backswimmers. All hemiptera associated with aquatic habitats belong to the suborder heteroptera. Research article open access longbranch attraction and. There are 37 species in three genera, distributed across most of the world, except the polar regions and remote oceanic islands. About 59,000 aquatic hemiptera were collected in wisconsin, most of them in the last 15 years. Pleidae are completely harmless to humans as their rostrum is far too small to pierce skin. Diversity of aquatic insects in karamana river, southern.
Identification key to the principal families of florida. The majority of the aquatic hemiptera from these temporary pools and pans are widespread ethiopian species, e. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. Their preferred habitat is vascular aquatic plants in standing water. Although some taxa are primarily aquatic, most hemiptera do not rely heavily on dissolved oxygen in the water, but instead obtain oxygen from the atmosphere. These include three species of belostomatidae, 48 species of corixidae, one species of naucoridae, four species of nepidae, nine species of notonectidae, and one species of pleidae. Family ochteridae velvety shore bugs in the semiaquatic and aquatic hemiptera of california heteroptera. A total of 17 species 717 specimens belonging to 11 families are listed with notes including 2 new species, paraplea davaoensis miyamoto pleidae and anisops yanoi miyamoto notonectidae. Pleidae, the pygmy backswimmers, is a family of aquatic insects in the order hemiptera there. A new genus and species of pleidae hemiptera from venezuela.
A new species of the genus buenoa hemiptera, notonectidae. Heteropterans occupy almost any habitat, both terrestrial and aquatic, the primary. Pleidae, the pygmy backswimmers, is a family of aquatic insect s in the order hemiptera infraorder nepomorpha, or true water bugs. Guide to aquatic macroinvertebrates of the upper midwest.
There are about 170 species found in freshwater habitats worldwide, with more than 110 in the neotropics, more than 20 in africa, almost. Species diversity of aquatic hemiptera and coleoptera in japan. Two new species of pleidae, heteroplea ornata new species and h. Heteroptera of michigan species list aquatic insects. Guide to aquatic heteroptera of singapore and peninsular. Pleidae, including an evaluation of its taxonomic importance. The genus eotrechus has terminal claws and the species generally live on vertical rock faces, often around waterfalls. Among the numerous clades of aquatic insects, the aquatic bugs. This is the ninth part in a series of papers constituting a guide to the aquatic heteroptera of singapore and peninsular malaysia, and treats the families ochteridae and gelasotocoridae, constituting the superfamily ochteroidea in the infraorder nepomorpha. At first glance they may appear to be small beetles, but closer examination will reveal the three or four segmented, cylindrical beak which identifies it as a hemiptera. Studies of aquatic hemiptera of pocharam lake in andhra pradesh were done by deepa and rao in 2007. Family belostomatidae giant water bugs giant water bugs are large, flat, ovalshaped insects that use their raptorial legs and beaklike mouthparts to capture and subdue large prey, including tadpoles and small fish. The nepoidea contains the water scorpions and water stick insects of the family nepidae and the giant water bugs, electric light bugs, and toe biters of the belostomatidae. Information on the biology of pleidae can be found on page 102.
New records and description of fiftyfour new species of aquatic beetles in the genus hydraena kugelann rom south america coleoptera. Taxonomic history the first species of aquatic hemiptera described in japan was appasus japonicus vuillefroy, 1864. Phylogeny and diversification of the true water bugs insecta. Species keys for adults are provided along with notes on. Diversity and distribution of aquatic insects in aghanashini river of central western ghats of india were studied by balachandranet. Hygropetric water striders of the genus onychotrechus kirkaldy with description of a related genus insecta. The following are descriptions of two species of fresh water hemiptera, found commonly in the vicinity of sydney, and which appear to be novelties. This clade was named as superfamily corixoidea in the classification s. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Cook department of biological sciences, sam houston state university, huntsville, tx 773412116 email. Species treatments and keys are provided for the multiple species of ochterus and nerthra occurring in the region under study, and for. Since prehistoric times eggs of aquatic hemiptera of the family corixidae are harvested from bundles o. A new and primitive genus and species of hydrometridae hemiptera, gerromorpha with a cladistic analysis of relationships within.
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