Gergithus

Gergithus is a genus of planthoppers in the family Issidae. Like all planthoppers, adults feed on plant sap and are capable of escaping by leaping. The genus like other members in the tribe appears somewhat rounded and beetle-like, in some cases, with a mimetic resemblance to ladybird beetles. About 60 species are known in the genus and they are distributed in the Indomalayan and Palearctic Realms.

For the town of the ancient Troad, see Gergithus (Troad).

Gergithus
Gergithus variabilis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Infraorder: Fulgoromorpha
Family: Issidae
Tribe: Hemisphaeriini
Genus: Gergithus
Stål, 1870
Type species
Hemisphaerius schaumi
Stål, 1855

Description

The genus is closely related to Hemisphaerius but differs in having longer frons (forehead) and legs. The frons also lacks a median keel (carina) or tubercles on the frons, pronotum or mesonotum. The rounded tegmen which resembles the elytra of beetles are often patterned. Although some species show variations in pattern, many species can be recognized on the basis of the patterns.[1]

Species
An undescribed Gergithus species from the Western Ghats

Gergithus is a large genus and the list of species includes:

  • Gergithus affinis Schumacher, 1915
  • Gergithus bimaculatus Zhang & Che, 2009
  • Gergithus bipustulatus (Walker, 1858)
  • Gergithus bistriatus (Schumacher, 1915)
  • Gergithus carbonarius Melichar, 1906
  • Gergithus chelatus Che, Zhang & Wang, 2007
  • Gergithus chihpensis Chan & Yang, 1994
  • Gergithus complicatus Distant, 1916
  • Gergithus conspicularis Distant, 1916
  • Gergithus contusus (Walker, 1851)
  • Gergithus cribratus Melichar, 1906
  • Gergithus dubius (Butler, 1875)
  • Gergithus elongatus (Distant, 1906)
  • Gergithus erebus Distant, 1916
  • Gergithus flaviguttatus Hori, 1969
  • Gergithus flavimacula (Walker, 1851)
  • Gergithus formosanus Metcalf, 1955
  • Gergithus gravidus Melichar, 1906
  • Gergithus herbaceus (Kirby, 1891)
  • Gergithus horishanus Matsumura, 1916
  • Gergithus hosticus Chan & Yang, 1994
  • Gergithus ignotus Melichar, 1906
  • Gergithus iguchii Matsumura, 1916
  • Gergithus lineatus Kato, 1933
  • Gergithus lineolatus Melichar, 1906
  • Gergithus longulus Schumacher, 1915
  • Gergithus multipunctatus Che, Zhang & Wang, 2007
  • Gergithus niger (Walker, 1857)
  • Gergithus nigrolimbatus Schumacher, 1915
  • Gergithus nilgiriensis (Distant, 1906)
  • Gergithus nonomaculatus Meng & Wang, 2012
  • Gergithus nummarius Chan & Yang, 1994
  • Gergithus okinawanus Matsumura, 1936
  • Gergithus parallelus Che, Zhang & Wang, 2007
  • Gergithus pendulus Chan & Yang, 1994
  • Gergithus pigrans Melichar, 1906
  • Gergithus proteus Distant, 1916
  • Gergithus pseudotessellatus Che, Zhang & Wang, 2007
  • Gergithus quinquemaculatus Che, Zhang & Wang, 2007
  • Gergithus reticulatus (Distant, 1906)
  • Gergithus robustus Schumacher, 1915
  • Gergithus rosticus Chan & Yang, 1994
  • Gergithus rotundus Chan & Yang, 1994
  • Gergithus rugiformis Zhang & Che, 2009
  • Gergithus satsumensis Matsumura, 1916
  • Gergithus schaumi (Stål, 1855) - type species
  • Gergithus secundus (Melichar, 1903)
  • Gergithus signatifrons Melichar, 1906
  • Gergithus spinosus Che, Zhang & Wang, 2007
  • Gergithus stramineus Hori, 1969
  • Gergithus taiwanensis Hori, 1969
  • Gergithus tessellatus Matsumura, 1916
  • Gergithus tristriatus Meng & Wang, 2012
  • Gergithus unicolor Melichar, 1906
  • Gergithus variabilis (Butler, 1875)
  • Gergithus venosus (Distant, 1906)
  • Gergithus versicolor Distant, 1916
  • Gergithus vidulus Melichar, 1906
  • Gergithus yayeyamensis Hori, 1969
  • Gergithus yunnanensis Che, Zhang & Wang, 2007

References
  1. Meng, Rui; Wang, Yinglun (2012). "Two new species of the genus Gergithus Stål (Hemiptera: Fulgoromorpha: Issidae) from China, with a redescription of G. bimaculatus Zhang and Che, and G. tessellatus Matsumura". Zootaxa. 3247: 1–18.
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