Genus Corylonga Löcker & Fletcher, 2006

Museums

Regional Maps

• Corylonga Löcker, B. & Fletcher, M.J. in Löcker, B., Fletcher, M.J., Larivière, M.-C., Gurr, G.M., Holzinger, W.E. & Löcker, H. 2006. Taxonomic and phylogenetic revision of the Gelastocephalini (Hemiptera: Cixiidae). Invertebrate Systematics 20: 59-160 [94].

  Type species:

   Corylonga loisae Löcker & Fletcher, 2006 by original designation.

Introduction

A widespread genus although most species are represented in collections by only one or a few specimens. The species are differentiated on the basis of the male genitalia and females can only be identified to genus.

Distribution

States

New South Wales, Northern Territory, Queensland, Western Australia

IBRA and IMCRA regions

IBRA

NSW, NT, Qld, WA: Brigalow Belt South (BBS), Cape York Peninsula (CYP), Northern Kimberley (NK), Pine Creek (PCK), Victoria Bonaparte (VB) ; WA: Central Kimberley (CK)

Diagnosis

The genus is diagnosed by the arrangement of spines on the phallotheca, the shape of the genital styles including the presence of a small tooth on the inner side of the basal arms, the very long and narrow vertex (more than 1.7× longer than wide), strongly produced before the eyes, the long and narrow frons (at least 2.2× longer than wide) and strongly undulating postocular carinae.
Colour Head yellowish brown, central part of vertex and clypeus sometimes darker, carinae straw coloured; pronotum in central part straw coloured, lateral parts darker; mesonotum orange to mid brown, carinae paler; legs straw coloured to light brown; forewing hyaline straw coloured sometimes with few light brown marks, veins straw coloured, tubercles mid brown; abdominal sternites yellowish brown to mid brown, intersegmental membranes pale yellowish. Morphology Body length. ♂ 4.9–6.4 mm, ♀ 5.2–7.3 mm. Head. Vertex more than 1.7× longer than wide; produced before eyes by (1/2–) 3/4–1× eye length; apex narrowly rounded or truncate; lateral carinae strongly elevated. Frons at least 2.2× longer than wide; position of maximum width around centre of frontoclypeal suture; lateral carinae double s-shaped, strongly elevated apically; median carina incomplete. Frontoclypeal suture semicircular, median part not reaching lower margin of antennal scape; postclypeus with well developed lateral carinae and median carina; anteclypeus with well developed median carina. Thorax. Pronotum with strongly undulating carinae. Concavity at costal border of forewing absent; r–m1 distad of fork of MA–MP. Hind tibia with six apical teeth in a row interrupted by a wide gap. Male genitalia. Genital styles with inner side of basal arm bearing small tooth. Aedeagus with 3–4 spines. (Löcker et al. 2006)

ID Keys

Fletcher, M.J., Löcker, B., Larivière, M.C. and Löcker, H. (2006). Illustrated Key to the Australian Genera of the Planthopper Tribe Gelastocephalini (Hemiptera: Cixiidae: Fulgoromorpha) http://www1.dpi.nsw.gov.au/keys/fulgor/cixiid/gelastocephalini/gel00.htm

Diagnosis References

Löcker, B., Fletcher, M.J., Larivière, M.-C., Gurr, G.M., Holzinger, W.E. & Löcker, H. 2006. Taxonomic and phylogenetic revision of the Gelastocephalini (Hemiptera: Cixiidae). Invertebrate Systematics 20: 59-160 [94]

History of changes