Gyrophallus lochada, new species

Figure 42, map 10, table 1, plates 12, 13

DIAGNOSIS: Recognized by moderately large size, strong sexual dimorphism (pl. 12), Jshaped endosoma with a long, slender, recurved apical spine subtended by a short spatulate apical spine, and ventral surface of endosoma with a small discrete subapical membranous sac (fig. 42, pl. 13). Most similar in size to G. lasseteri, but endosomal structure distinctive with only a single, long, slender, recurved spine surpassing apex (pl. 13).

DESCRIPTION: Male: Total length 4.50, pronotum width 0.81. COLORATION (pl. 12): Green to pale, hemelytron translucent; corium with a weak dark spot at inner angle of cuneus; membrane weakly fumose, with a small, weak, dark spot at apex of cells. SUR- FACE AND VESTITURE (pl. 12): Vestiture of reclining, pale, common setae. STRUC- TURE: Head (pl. 12): Eye occupying twothirds height of head; antennae inserted just above ventral margin of eye, eye slightly emarginate; antennal segment 2 relatively short (1.03), 1.27 times width of head; labium reaching apex of mesocoxa. Thorax (pl. 12): Mesoscutum narrowly exposed. Hemelytron: Elongate, costal margin weakly convex, cuneus long. GENITALIA (fig. 42, pl. 13): Pygophore: Moderate in size. Endosoma: Moderately large, J-shaped; dorsal strap bifid apically with long recurved spine and short, blunt, weakly sclerotized spine; ventral strap terminating proximal to secondary gonopore; gonopore subtended by a membranous bag on ventral surface of endosoma. Phallotheca: Apical portion short and broadly conical; aperture on anterior dorsoapical aspect, elongate ovoid; basal portion long reaching anteriad to three quarters length of pygophore in situ; right margin with a strongly sclerotized strap. Parameres: Left paramere with entire dorsoposterior margin strongly projecting dorsad; anterior process with a sharp apex. Right paramere moderately large, blunt apically, with a minute point on posterior angle.

Female (pl. 12): Coloration as in male; differing from male as in generic description; total length 3.45, pronotum width 0.85.

ETYMOLOGY: Named after the type locality, Lochada, Western Australia; a noun in apposition.

HOST: Recorded from Eremophila forrestii (pl. 37G) ( Scrophulariaceae).

DISTRIBUTION (map 10): Known from the type locality, Lochada, southeast of Geraldton, Western Australia.

HOLOTYPE: AUSTRALIA: Western Australia: Lochada, track due W. of Kelly Well, 29.08152°S 116.5543°E, 406 m, 15 Sep 2009, C. Symonds, Eremophila forrestii F. Muell. (Scrophulariaceae), det. WA Herbarium, 1♂ (AMNH_PBI 00414608) (WAMP).

PARATYPES: AUSTRALIA: Western Australia: Lochada, track due W. of Kelly Well, 29.08152°S 116.5543°E, 406 m, 15 Sep 2009, C. Symonds, Eremophila forrestii F. Muell. (Scrophulariaceae), det. WA Herbarium, 1♀ (00414609) (UNSW).