Species Ishidaella quadrata (Walker, 1851)

Museums

Regional Maps

• Tettigonia quadrata Walker, F. 1851. List of the Specimens of Homopterous Insects in the Collection of the British Museum. London : British Museum (Natural History) Vol. 3 pp. 637-907. [781].

  Type data:

   Holotype BMNH sex unknown (missing from BMNH; holotype by monotypy), Tasmania.

Generic Combinations

• Ishidaella quadrata (Walker, 1851). —
  Day, M.F. & Fletcher, M.J. 1994. An annotated catalogue of the Australian Cicadelloidea (Hemiptera: Auchenorrhyncha). Invertebrate Taxonomy 8: 1117-1288 [1148]
• Kolla quadrata (Walker, 1851). —
  Evans, J.W. 1966. The leafhoppers and froghoppers of Australia and New Zealand. Memoirs of the Australian Museum 12: 1-347 [148]

Introduction

The identity of this species is unknown. Evans (1966) referred it to the genus Kolla Distant which is where he placed all the species later transferred to Ishidaella by Young (1986) who regarded T. quadrata as unplaceable to genus. Day & Fletcher (1994) placed it in Ishidaella to keep it with the other species grouped together by Evans (1966). Walker's (1851) original description states that the fore wings are slightly tawny with tawny veins which differs from the blue black colour typical of other species of the genus. Its placement is therefore problematic unless the type specimen, which Evans (1966) stated was missing from BMNH, can be located.

Distribution

States

Tasmania

Extra Distribution Information

Known only from type locality.

Australian Endemic.

Ecological Descriptors

All stages: xylem feeder.

Diagnosis

Yellow, paler beneath; head short, punctured, as broad as the chest, rounded in front; crown equally long across the whole breadth which, excluding the eyes, is about four times the length; face conical; shield transversely striated, very convex along the fore border, hardly concave behind; scrutcheon tawny, punctured, yellow and minutely striated beyond the transverse section, with a black spot on each side at the base; abdomen wanting; legs yellow; fore wings slightly tawny; veins tawny; hind wings colourless; veins brown. Length of the body 2½? lines; of the wings 6 lines (Walker 1851).

Diagnosis References

Walker, F. 1851. List of the Specimens of Homopterous Insects in the Collection of the British Museum. London : British Museum (Natural History) Vol. 3 pp. 637-907. [781]

General References

Evans, J.W. 1966. The leafhoppers and froghoppers of Australia and New Zealand. Memoirs of the Australian Museum 12: 1-347 [148]

Young, D.A. 1986. Taxonomic study of the Cicadellinae (Homoptera: Cicadellidae) Part 3. Old World Cicadellini. Technical Bulletin of the North Carolina Agricultural Research Service 281: 1-639 [624]

History of changes