Genus Colgar Kirkaldy, 1900

Colgar peracutum (Walker), type species of Colgar.

© Copyright Murray Fletcher, Orange Agricultural Institute.

Museums

Regional Maps

• Colgar Kirkaldy, G.W. 1900. Bibliographical and nomenclatorial notes on the Rhynchota. No. 1. The Entomologist 33(448): 238-243 [242] [replacement name].

  Type species:

   Cromna peracuta Walker, 1858 by subsequent designation, see Kirkaldy, G.W. 1900. Bibliographical and nomenclatorial notes on the Rhynchota. No. 1. The Entomologist 33(448): 238-243 [242].
• Atella Stål, C. 1866. Hemiptera Homoptera Latr. Hemiptera Africana 4: 1-276 [238] [junior homonym; of Atella Doubleday, 1847].

  Type species:

   Cromna peracuta Walker, 1858 by subsequent designation, see Kirkaldy, G.W. 1900. Bibliographical and nomenclatorial notes on the Rhynchota. No. 1. The Entomologist 33(448): 238-243 [242].

Introduction

Four species of this mainly New Guinean (Papua New Guinea and Irian Jaya) genus are recorded in Australia although one extends south only as far as Dauan Island in the northern Torres Strait. The genus is also recorded in the Cook Islands, Indonesia (Maluku) and the Philippines.

Distribution

States

New South Wales, Northern Territory, Queensland

IBRA and IMCRA regions

IBRA

NSW, NT, Qld: Brigalow Belt North (BBN), Darwin Coastal (DAC), Einasleigh Uplands (EIU), Nandewar (NAN), Pine Creek (PCK), Sydney Basin (SB), South Eastern Queensland (SEQ), Wet Tropics (WT)

Other Regions

Torres Strait Islands terrestrial, marine & freshwater

Diagnosis

Head conically produced. Frons elongate, clearly tricarinate, the carinae meeting at apex of cone. Vertex shorter than cone, convex, medially carinate, separated from frons by carina, occasionally obsolete. Pronotum and mesonotum convex. Tegmen triangular, truncate apically in Australian species. Apical angle sharply rounded, sutural angle rightangled or slightly obtuse, not produced. Vein Cu branched at about midlength, anterior branch short meeting M3+4 to form strong angled crossvein. Costal membrane and costal cell about equal in width. Subapical lines absent. Hind tibia with one spine on external margin. The prolongation of the head in Colgar is a conical extension of the frons, the line representing the anterior margin of the vertex being situated considerably short of the apex of the cone. In Euphanta Melichar and Colgaroides Distant, the carinate front margin of the vertex reaches the apex of the cone so that the vertex is a major component of the prolongation of the head (Fletcher 1988).

ID Keys

Fletcher, M.J. (2005). Illustrated key to the genera of the family Flatidae found in Australia (Hemiptera: Fulgoroidea) http://www1.dpi.nsw.gov.au/keys/fulgor/flatid/flat00.htm

Diagnosis References

Fletcher, M.J. 1988. The Australian genera of Flatidae (Homoptera: Fulgoroidea). General and Applied Entomology 20: 9-32 [15]

History of changes