Species Goniagnathus osmelaki Fletcher, 2008

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• Goniagnathus osmelaki Fletcher, M.J. & Zahniser, J.N. 2008. The first record of Goniagnathini from Australia with description of four new species of Goniagnathus Fieber (Hemiptera: Cicadellidae: Deltocephalinae). Zootaxa 1692: 43-54 [45].

  Type data:

   Holotype ASCU ASCTHE0006093 ♂ (coll: 30.xi.1982, J.A. Osmelak), Tatura, Victoria.

 

Introduction

This dark brown species is only known in a macropterous form. It has been found in a broad crescent of inland eastern Australia from western Queensland through New South Wales and Victoria to SE South Australia. The species was named in honour of John Osmelak, formerly of the Victorian Dept of Agriculture, who collected part of the type series of this species and the first male specimen of G. centralis, during his work on tomato big bud phytoplasma.

 

Distribution

States

New South Wales, Queensland, South Australia, Victoria

Extra Distribution Information

Australian Endemic.

IBRA and IMCRA regions

IBRA

NSW, Qld, SA, Vic: Brigalow Belt South (BBS), Mitchell Grass Downs (MGD), Naracoorte Coastal Plain (NCP), NSW South Western Slopes (NSS), Riverina (RIV)

Ecological Descriptors

All stages: phloem feeder.

 

Diagnosis

Dark brown dorsally with pale brown speckling, ventrally dark brown. Anteclypeus apically sinuate, slightly exceeding facial margin. Frontoclypeus broad with distinct transverse ridging. Frontoclypeal sutures extending onto vertex, terminating outside ocelli which are obsolescent, separated from eye by more than 2 ocellar diameters. Vertex broadly convex anteriorly, shallowly concave posteriorly. Pronotum short, transversely wrinkled, short laterally with indistinct longitudinal carina behind eye. Tegmina with apical cells short, appendix well developed but narrow. Outer preapical cell quadrate, not stalked. Inner preapical cell closed basally by crossvein. Claval cells united at about midlength of clavus by crossvein. Male pygofer short with oblique ridge bearing two macrosetae dorsally, irregular line of finer setae along margin, terminating with posteroventral prominence with three short stubby macrosetae. Posterior lobe beyond ridge apically rounded or quadrate, sometimes incurved. Subgenital plates short, forming triangular prominence beyond sternite. Parameres with apical section finely rugose, broadly concave apically with outer lobe longer than inner lobe; basal section transverse oblong. Aedeagus finely attenuated, tapering base to apex, evenly curved in lateral view, with preapical gonopore, preapical recurved tooth and fine acute apex. In posterior view, aedeagus tapered base to apex which is bifurcate beyond gonopore. Female pregenital sternite with hind margin broadly and shallowly emarginate with median shallow notch. Length: males 4.37–4.60 mm, female 4.50 mm. (Fletcher & Zahniser 2008).

 

ID Keys

Fletcher & Zahniser 2008: 45

 

Diagnosis References

Fletcher, M.J. & Zahniser, J.N. 2008. The first record of Goniagnathini from Australia with description of four new species of Goniagnathus Fieber (Hemiptera: Cicadellidae: Deltocephalinae). Zootaxa 1692: 43-54 [45–48]

 

History of changes

Published	As part of group	Action Date	Action Type	Compiler(s)
05-Dec-2019		13-Aug-2013	MODIFIED
05-Dec-2019		16-May-2012	MODIFIED
05-Dec-2019		05-Aug-2011	MODIFIED
		12-Feb-2010	(import)