Gonatopus is a genus of solitary wasps of the family Dryinidae, sometimes called hump-backed pincer wasps. The wingless females have large scissor-like appendages at the tips of the front legs which are used to catch the leafhopper nymphs which act as hosts to the larvae of these wasps. The larva consumes the leafhopper nymph from the inside. An indication that a leafhopper is hosting a grub is a cyst of accumulated shed integuments which surround and protect the growing wasp larva.
Species The following list is a list of the species included within the genus Gonatopus found in Europe: A new species Gonatopus jacki was described from Florida, USA in 2018.
Gonatopus albolineatus Kieffer, 1904 Gonatopus albosignatus Kieffer, 1904 Gonatopus ater Olmi, 1984 Gonatopus atlanticus Olmi, 1984 Gonatopus audax (Olmi, 1984) Gonatopus azorensis (Olmi, 1989) Gonatopus baeticus (Ceballos, 1927) Gonatopus bicolor (Haliday, 1828) Gonatopus bilineatus Kieffer, 1904 Gonatopus blascoi Olmi 1995 Gonatopus brunneicollis (Richards, 1972) Gonatopus camelinus Kieffer, 1904 Gonatopus canariensis (Olmi, 1984) Gonatopus chersonesius Ponomarenko, 1970 Gonatopus clavipes (Thunberg 1827) Gonatopus distinctus Kieffer, 1906 Gonatopus distinguendus Kieffer, 1905 Gonatopus doderoi (Olmi & Currado, 1974) Gonatopus dromedarius (Costa, 1882) Gonatopus europaeus (Olmi, 1986) Gonatopus felix (Olmi, 1984) Gonatopus focarilei (Olmi, 1984) Gonatopus formicarius Ljungh, 1810 Gonatopus formicicolus (Richards, 1939) Gonatopus fortunatus Olmi, 1993 Gonatopus graecus Olmi, 1984 Gonatopus helleni (Raatikainen, 1961) Gonatopus horvathi Kieffer, 1906 Gonatopus kenitrensis Olmi, 1990 Gonatopus lindbergi Hellen, 1930 Gonatopus longicollis (Kieffer, 1905) Gonatopus lunatus Klug, 1810 Gonatopus lycius Olmi, 1989 Gonatopus mediterraneus Olmi, 1990 Gonatopus nearcticus (Fenton, 1927) Gonatopus pallidus (Ceballos, 1927) Gonatopus pedestris Dalman, 1818 Gonatopus planiceps Kieffer, 1904 Gonatopus plumbeus Olmi, 1984 Gonatopus popovi Ponomarenko, 1965 Gonatopus pulicarius Klug, 1810 Gonatopus rosellae (Currado & Olmi, 1974) Gonatopus solidus (Haupt, 1938) Gonatopus spectrum (Snellen van Vollenhoven, 1874) Gonatopus striatus Kieffer, 1905 Gonatopus subtilis Olmi, 1984 Gonatopus tenerifei Olmi, 1984 Gonatopus tussaci (Olmi, 1989) Gonatopus unilineatus Kieffer, 1904 Gonatopus vistosus Olmi, 1984
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