Genus Larivierea Löcker & Fletcher, 2006

Museums

Regional Maps

• Larivierea 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 [118].

  Type species:

   Larivierea yalthi Löcker & Fletcher, 2006 by original designation.

Introduction

This genus contains two species of small dark planthoppers with pale brown hyaline wings. One specimen was collected from Allocasuarina pusilla (Macklin) L.A.S.Johnson, (Casuarinaceae), the dwarf sheoak. The generic name honours Marie-Claude Larivière, Hemiptera taxonomist at NZAC, Auckland.

Distribution

States

New South Wales, Queensland, South Australia, Western Australia

IBRA and IMCRA regions

IBRA

NSW, Qld, SA, WA: Eyre Yorke Block (EYB), Geraldton Sandplains (GS), Murray Darling Depression (MDD), South Eastern Queensland (SEQ) ; NSW, SA, WA: Sydney Basin (SB)

Diagnosis

Colour Vertex yellow, central part mid brown or black; face mid brown to black except for yellow lateral carinae on frons, sometimes median carina at level of frontoclypeal suture paler; pronotum yellow, sometimes with dark brown laterally; mesonotum mid brown to black, sometimes with yellow mark on each laterocaudal border. Morphology. Body length. ♂ 3.4–3.7 mm, ♀ 4.1–5.3 mm. Head. Vertex 0.8–1.0× as long as wide, apex broadly truncate; caudal border u-shaped. Frons with its maximum width around centre of frontoclypeal suture; median carina incomplete, 1/2–3/4 as long as frons; lateral carinae convex (although rectilinear apically). 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 sinuate carinae; hind margin rectangular. Forewing 3.0–3.5× longer than wide; concavity at costal border absent; Sc+R+M forming common stem; fork of Sc+R distinctly basad of fork of CuA1+CuA2; r–m1 distinctly basad of fork MA–MP; position of icu at CuP distad of apex of clavus; C4 and C5 of equal length; 10 apical cells. Hind leg: tibia with 0–2 small lateral spines (without large lateral spines); six apical teeth in row interrupted by a narrow gap (almost forming uninterrupted row). Male genitalia. genital styles with inner side of basal arm bearing small tooth; phallotheca with a single spine arising left laterally. (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 [118]

History of changes