Polyozus mina, WEIRAUCH, 2007

WEIRAUCH, CHRISTIANE, 2007, Revision and Cladistic Analysis of the Polyozus Group of Australian Phylini (Heteroptera: Miridae: Phylinae), American Museum Novitates 3590, pp. 1-64 : 54-55

Polyozus mina , new species figures 2 , 7 , 9 , 11 , 13 , 17–20

HOLOTYPE: AUSTRALIA: South Australia: Para Wirra National Park, 34.91668 ° S 138.9167 ° E, 350 m, 31 Oct 1995, Schuh, Cassis, and Gross, Acacia paradoxa DC. (Fabaceae) , det. B.J. Conn 1996 NSW 395964, 13 ( AMNH _PBI 00131844) ( AMNH).

DIAGNOSIS: Recognized by the small size, moderately elongate ovate body, uniformly yellowish green coloration, and characters of the male genitalia, most notably the vesica of moderate size, dorsal apical process slender, long, without serration, proximal process squarish and short, and median apical process consisting of several branches. Habitus most similar to P. kuringgai , but distinguished by the smaller body size and smaller vesica. Male genitalia most similar to P. galbanus , but distinguished by vesica with median apical process with few branches and dorsal apical process without serration. Also distinguished from P. galbanus by the smaller size.

DESCRIPTION: Male: Of moderate size, elongate ovoid, total length 2.60–3.18, length apex clypeus–cuneal fracture 1.70–2.08, width across pronotum 0.97–1.04. COLORATION ( fig. 2 ): General coloration rather uniformly brownish green with yellow tinge, mesonotum and apex of scutellum orange. Head: Uniformly brownish green with yellow tinge, fasciae present as pale dark marks, base of clypeus with dark mark. Antenna pale, with dark ring subbasally on segment 1, infuscate toward apex. Labium pale, infuscate toward apex. Thorax: Pronotum and scutellum uniformly brownish green with yellow tinge, mesonotum orange, scutellum with apex pale. Pleura pale greenish yellow with mesopleuron ventrally dark brown. Legs: Pale with tarsi infuscate, fore and middle femora with scattered small brown spots and hindfemur more densely marked with large brown spots, tibial spines dark with dark bases. Hemelytra: Corium and cuneus rather uniformly brownish green with yellow tinge, proximal margin of cuneus with indistinct translucent area, membrane infuscate with some clear patches, veins orange. Abdomen: Including dorsal surface of pygophore pale greenish yellow. SURFACE AND VESTITURE: Dorsum weakly shining, densely covered with semierect, simple, dark setae interspersed with flattened, subadpressed, silvery setae. STRUCTURE: Head: Short, vertex slightly wider than width of one eye, slightly produced clypeus, and sunken maxillary plate, eye large, but not quite reaching ventral margin of head. Antennal segment 1 moderately slender and slightly surpassing apex of head, segment 2 of moderate length and diameter, slightly smaller diameter than segment 1, diameter slightly increased toward apex, segments 3 and 4 missing in all observed specimens. Labium slender, reaching base of mesocoxa. Thorax: Pronotum wider than long and anterior margin slightly sinuate. Legs: Claws of moderate length and stoutness and pulvilli of moderate size. Hemelytra: Slightly convex laterally, cuneus elongate triangular. Abdomen: Stout, reaching to about middle of cuneus. GENITALIA: Parameres: Right paramere as in figure 7 ; left paramere ( fig. 9 ) with anterior process of moderate length and thickness, posterior process long, slender, slightly bent ventrad and anteriad, truncate at apex, body with large, straight, almost horizontal lobe. Phallotheca ( fig. 11 ): External portion irregularly tubular, tapering toward apex, anterior surface basally with large horizontal flange and subapically with distinct serrate lobe, posterior surface with notched and serrate small lobe, opening ventral, slitlike at base and extended toward apex. Vesica ( fig. 13 ): Small, with dorsal apical process tubular, elongate, and with pointed apex, exterior margin smooth; proximal process squarish, large, median apical process treeshaped with several branches, weakly sclerotized; ventral apical process long and slender, not connected to strap of vesical body.

Female: Coloration slightly paler than in male, body shorter and more ovoid than male. Total length 2.64–2.76, length apex clypeus– cuneal fracture 1.82–1.88, width across pronotum 0.90–1.09.

ETYMOLOGY: Named for the smooth surface of the dorsal apical blade, after the Latin adjective ‘‘minus, -a, -um’’, meaning smooth or hairless.

HOST (appendix 1): Recorded from Acacia paradoxa ( Fabaceae , Mimosoideae ).

DISTRIBUTION: Known from one collecting site in southern South Australia ( fig. 17 ).

DISCUSSION: The cladistic analysis presented here treats P. mina as the sister group to clade 14 ( P. kuringgai , P. manilla , P. australianus , and P. galbanus ).

PARATYPES: AUSTRALIA: South Australia: 7 km E Para Wirra National Park near Williamstown, 34.70001 ° S 138.85 ° E, 250 m, 31 Oct 1995, Schuh, Cassis, and Gross, Acacia paradoxa DC. (Fabaceae) , det. B.J. Conn 1996 NSW 395964, 33 (AMNH_PBI 00087711, AMNH_PBI 00087713) (AM). Para Wirra National Park, 34.91668 ° S 138.9167 ° E, 350 m, 31 Oct 1995, Schuh, Cassis, and Gross, Acacia paradoxa DC. (Fabaceae) , det. B.J. Conn 1996 NSW 395964 Host 95-65, 13 (AMNH_PBI 00131839), 1♀ (AMNH_PBI

00131850) (AM). Acacia paradoxa DC. (Fabaceae) , det. B.J. Conn 1996 NSW 395964 Host 95-65, 53 (AMNH_PBI 00131840–00131843, AMNH_PBI 00131845), 2♀ (AMNH_PBI 00131848, AMNH_PBI 00131849) (AMNH).

Figures

Fig. 2. Habitus photographs of Polyozus spp.

Fig. 7. Right parameres of species of Ancoraphylus, Exocarpocoris, and Polyozus.

Fig. 9. Left paramere of species of Polyozus, shown in dorsal and lateral view. Numbers on illustrations refer to characters and character states in table 2.

Fig. 11. Phallotheca of species of Polyozus, in dorsal and ventral perspective. Numbers on illustrations refer to characters and character states in table 2.

Fig. 13. Vesica of species of Polyozus.

Fig. 17. Distribution of species of Polyozus.

Fig. 18. Phylogenetic relationships of the 16 species of the Polyozus group: The strict consensus of the eight equally most parsimonious trees (L 5 91; CI 5 67; RI 5 83) derived from the character matrix in table 3. Solid circles on the branches indicate uniquely derived apomorphic character states; empty circles indicate homoplastic characters under unambiguous character optimization. Figures above the bars indicate number of character as shown in table 2 and appendix 1; figures below bars indicate the character state. Large figures in shaded circles denominate clades. Branch support values (Bremer support) are given above branches in square boxes.

Fig. 19. Strict consensus of the two most parsimonious trees obtained with the analysis using implied weights. Characters and clades are shown as explained in figure 18.

Fig. 20. Fast optimization of host plants of Phylini of the Polyozus group on the strict consensus of the unweighted analysis.