The Australian Pentastirini (Hemiptera: Fulgoromorpha: Cixiidae) Author Löcker, Birgit Author Fletcher, Murray J. Author Larivière, Marie-Claude Author Gurr, Geoff M. text Zootaxa 2006 2006-08-14 1290 1290 1 138 journal article 1175­5334 1D47B077-34C7-4BC6-B22F-C5BE9B02EBD7 Oliarus alexanor Kirkaldy nom. dub. ( Figs 10E–H ) Oliarus alexanor Kirkaldy, 1906: 399 . Type material Syntype , ♂ or ♀ (abdomen missing) (examined), AUSTRALIA , Qld : Cairns , viii.1904 ( BPBM ) . FIGURE 10. Oliarus trispiralis : A habitus; B, C, D head. Oliarus alexanor : E habitus; F, G, H head. Colour Body mid brown to dark brown, carinae paler; legs light brown; forewing hyaline colourless with brown marks along crossveins, veins light brown, tubercles and pterostigma mid brown. Morphology Body length: 5.0 mm (gender unknown since abdomen of specimen is missing). Head: Vertex (total length) 1.8 times longer than wide; basal emargination obtusely angled to rectangular. Postclypeus with well­developed median carina. Thorax: Hind margin of pronotum obtusely angled. Mesonotum with evanescent median carina and well­developed sublateral and lateral carinae. Forewing 3.3 times longer than wide; costa without tubercles; 8 apical cells. Male genitalia: Unknown (only known specimen is lacking its abdomen). Remarks The narrow vertex and the chaetotaxy of the hind leg (2 lateral spines on the tibia, 7 apical teeth on the 1 st tarsomere, and 5 apical teeth on the 2 nd tarsomere) verify the placement within the genus Oliarus . Because of the absence of male specimens this species cannot be reliably identified. For this reason O. alexanor is regarded as a nomen dubium .