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Gerromorpha
Hygrotechuis conformis (Gerroidea: Gerridae) feeding on a drowned hymenopteran
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hemiptera
Suborder:	Heteroptera
Infraorder:	Gerromorpha Popov, 1971
Superfamilies
Gerroidea Hebroidea Hydrometroidea Mesovelioidea

The Gerromorpha comprise an infraorder of insects in the "true bug" order Hemiptera. These "typical" bugs (suborder Heteroptera) are commonly called semiaquatic bugs or shore-inhabiting bugs. The Ochteroidea (infraorder Nepomorpha are also found in shore habitat, while the Gerromorpha are actually most often encountered running around on the water surface, being kept from sinking by surface tension and their water-repellent legs. Well-known members of the Gerromorpha are the namesake Gerridae (water striders).

Systematics

The eight family families usually recognized are arranged in four superfamilies. The two small or monotypic ones of these are basal lineages; the two larger ones form a more advanced clade. The phylogenetic sequence of superfamilies and families of the Gerromorpha is:

Mesovelioidea – water treaders

• Madeoveliidae (sometimes included in Mesoveliidae)
• Mesoveliidae

Hebroidea

• Hebridae – velvet bugs
• Macroveliidae

Hydrometroidea

• Paraphrynoveliidae
• Hydrometridae – water measurers

Gerroidea

• Hermatobatidae
• Gerridae – water striders
• Veliidae – riffle bugs

References

1. G. Thirumalai. "Checklist of Gerromorpha (Hemiptera: Heteroptera) of India" (PDF). Zoological Survey of India.
2. ToL (1995)

Further reading

• Tree of Life Web Project (ToL) (1995): Gerromorpha. Water striders, water measurers, velvet water bugs, and water treaders. Version of 1995-JAN-01. Retrieved 2008-JUL-28.
• Tree of Life Web Project (ToL) (2005): Heteroptera. True bugs. Version of 2005-JAN-01. Retrieved 2008-JUL-28.

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