Genus Oliarus Stål, 1862

Museums

Regional Maps

• Oliarus Stål, C. 1862. Novae vel minus cognitae Homopterorum formae et species. Berliner Entomologische Zeitschrift 6: 303-315 [306].

  Type species:

   Oliarus walkeri Stål, 1859 (Indonesia) by subsequent designation, see Distant, W.L. 1906. The Fauna of British India, including Ceylon and Burma. Rhynchota (Heteroptera—Homoptera). London : Taylor & Francis Vol. 3 xiv 503 pp. [256].

  Secondary source:

   Löcker, B., Fletcher, M.J., Larivière, M.-C. & Gurr, G.M. 2006. The Australian Pentastirini (Hemiptera: Fulgoromorpha: Cixiidae). Zootaxa 1290: 1-138 [20].

Introduction

The genus Oliarus was a catch-all genus for many species from almost all regions of the world. New genera were created by a number of authors, notably Van Stalle 1985–1991, for the Palaeartic, Nearctic and Ethiopian species. Emeljanov (2001) redefined the genus, limiting it to the Oriental and Australasian regions. The identity of the type species, Cixius walker Stål was established by Hoch (2005) and this enabled recognition of the Australian species which were placed in the genus by Löcker et.al. (2006).

Distribution

States

Northern Territory, Queensland, Western Australia

IBRA and IMCRA regions

IBRA

NT, Qld, WA: Arnhem Coast (ARC), Arnhem Plateau (ARP), Brigalow Belt North (BBN), Brigalow Belt South (BBS), Central Mackay Coast (CMC), Cape York Peninsula (CYP), Daly Basin (DAB), Darwin Coastal (DAC), Einasleigh Uplands (EIU), Gulf Fall and Uplands (GFU), Gulf Coastal (GUC), Gulf Plains (GUP), Northern Kimberley (NK), Pine Creek (PCK), South Eastern Queensland (SEQ), Sturt Plateau (STU), Victoria Bonaparte (VB), Wet Tropics (WT)

Other Regions

Christmas Island terrestrial & freshwater, Torres Strait Islands terrestrial, marine & freshwater

Diagnosis

Typical members of Oliarus sensu Emeljanov (2001) are characterised by the more or less narrow macrocoryphe (‘vertex’); acuteangularly projecting forward anterior carina of the coryphe touching medially the anterior carina of the macrocoryphe (i.e. the acrometope subdivided into a pair of longitudinal triangles); elongate styles with thick medioventral heel tapering to the apical hook-like dilation; apical dilation usually with acute anterolateral angle and sometimes with blunt projections of posteromedial and posterolateral angle. (Emeljanov 2001)
They are further characterised by the presence of 5 spines on the second hind tarsomeres and only 2 lateral spines on the hind tibia (this feature separates them from all other Australian Pentastirini, which have 3–4 lateral spines) (Löcker et.al. 2006)

ID Keys

Löcker, B., Fletcher, M.J. and Larivière, M.-C. (2006). Illustrated Key to the Genera of the Tribe Pentastirini found in Australia (Hemiptera: Fulgoromorpha: Cixiidae) http://www1.dpi.nsw.gov.au/keys/fulgor/cixiid/pentastirini/penta00.htm

Diagnosis References

Emeljanov, A.F. 2001. The genus Oliarus s. str. and related genera from the Oriental Region (Homoptera: Cixiidae). Zoosystematica Rossica 10(1): 71-72 [71]

Löcker, B., Fletcher, M.J., Larivière, M.-C. & Gurr, G.M. 2006. The Australian Pentastirini (Hemiptera: Fulgoromorpha: Cixiidae). Zootaxa 1290: 1-138 [20]

General References

Emeljanov, A.F. 2001. The genus Oliarus s. str. and related genera from the Oriental Region (Homoptera: Cixiidae). Zoosystematica Rossica 10(1): 71-72 [71]

Hoch, H. 2005. On the identity of the type species of the planthopper genus Oliarus Stål, 1862, Oliarus walkeri (Stål, 1859). Zootaxa 1956: 53-60

Löcker, B., Fletcher, M.J., Larivière, M.-C. & Gurr, G.M. 2006. The Australian Pentastirini (Hemiptera: Fulgoromorpha: Cixiidae). Zootaxa 1290: 1-138 [20]

History of changes