Ozphyllum, Rentz & Su & Ueshima, 2007

Rentz, D. C. F., Su, You Ning & Ueshima, Norhiro, 2007, Studies in Australian Tettigoniidae: Ozphyllum, a new genus of Phaneropterine katydids with comments on its relationships and ecology (Orthoptera: Tettigoniidae; Phaneropterinae), Zootaxa 1629 (1), pp. 57-68 : 59-60

publication ID	https://doi.org/10.11646/zootaxa.1629.1.5
DOI	https://doi.org/10.5281/zenodo.15643153
persistent identifier	https://treatment.plazi.org/id/03AC8562-752F-401D-FF09-F420FCFAF870
treatment provided by	Felipe
scientific name	Ozphyllum
status	gen. nov.

Treatment

OZPHYLLUM *1 Rentz, Su & Ueshima gen. nov.

ANIC Number , Gen. Nov. M-2

Type species: Ozphyllum kuranda Rentz, Su & Ueshima gen. et sp. nov., here designated.

Description.—Male/Female. Size moderate for subfamily in Australia, form robust; both sexes fully winged. Head globular, smooth, occiput somewhat produced, subacute; fastigium of vertex minute, produced, somewhat species distinctive; frons with clypeus and labrum somewhat rough and depressed. Antenna with scape and pedicel normal, not modified; flagellum, normal, thin, extending well beyond tip of abdomen; scrobes produced on internal margins. Eye ovoid, bulging ( Figs. 1 View FIGURE 1 , 2 View FIGURE 2 ). Thoracic auditory structure very large, open, only partially concealed by lateral lobe of pronotum. Pronotum with surface flat, undulating, not shining; surface of disk traversed by a deep sulcus in anterior 1/5, median portion of disk with a distinct U-shaped sulcus; lateral lobe smooth, much deeper than broad, surface somewhat undulating. Prosternum unarmed, mesosternum armed with a pair of moderately large quadrate processes, metasternum with a pair of much smaller processes. Male tegmina ovoid to subquadrate, produced on anterior margin in males; costa absent, subcosta and radius fused and diverging only at apex; stridulatory region species distinctive in degree of sclerotisation, stridulatory vein with a similar secondary vein, mirror absent; stridulatory file ( Figs. 7A–D View FIGURE 7 ), gently arching, teeth lamellar; female tegmen subquadrate, apex obtuse. Fore coxa with a minute protuberance, somewhat spiniform; all other coxae and trochanters unarmed. Fore legs with fore tibia with auditory tympanum open ( Fig. 6E View FIGURE 6 ) on both sides; tibia quadrate in cross section, dorsal surface unarmed, ventral surface with 4–5 minute spines along margins, apex with a much longer spine externally; fore femur subcylindrical, ventral surface flat, margins produced, armed only on anterior surface with a few minute spines. Middle legs longer than fore legs; tibia quadrate, somewhat expanded in proximal portion, dorsal surface flat, margins produced, armed only at apex on posterior margin with a single spine, ventral surface flat, armed on anterior margin with many small spines, one apical in position, posterior margin with 2 spines, one apical in position. Hind legs with femur smooth, without any trace of sculpture, ventral surface with a few minute spines on each side, those near the apex somewhat larger ( Fig. 6D View FIGURE 6 ). Tarsi typical of subfamily, without any trace of plantula ( Fig. 6D View FIGURE 6 ). Genicular lobes of fore and middle femora armed with a pair of minute spines on both sides, hind femur with a much larger pair of spines. Abdomen unmodified: tenth tergite not highly modified, supra-anal plate evenly obtuse ( Fig. 5A View FIGURE 5 ); paraprocts not modified; male cercus elongate, apically species distinctive ( Figs. 5A, B View FIGURE 5 ; 6A–C, E View FIGURE 6 ), female cercus simple, styliform; phallic complex completely unsclerotised; male subgenital plate apically elongate, without styles ( Fig. 5B View FIGURE 5 ), female subgenital plate short, with median incision. Ovipositor short, bud-like. Colour primarily green ( Figs. 1 View FIGURE 1 , 2 View FIGURE 2 ). Head distinctively coloured with genae and frons species distinctive: antenna dark brown, legs green and brown; tarsi dark brown. Tegmina uniformly green except as noted in descriptions below. Thorax often yellow on portions surrounding auditory structure. Abdomen dorsally tawny brown, or yellow, laterally green, each tergite, both dorsally and laterally with purple streaks; ventral surface of abdomen greenish yellow, or reddish brown, lateral portions often brighter yellow.

Discussion.—We have not been able to examine any specimens of Cosmophyllum olivaceum Blanchard , the type of the genus, with which Ozphyllum appears to be most closely related, but the figures in Brunner von Wattenwyl’s book (1878, Fig. 29, a–c) and those on the Orthoptera Species File plainly illustrate the similarity of the two genera. In habitus, tegminal venation and genitalic structure, they are remarkably alike. This is not the first tettigoniid example illustrating a relationship between the Australian fauna and that of Chile. Rentz & Gurney (1985) describe the Coniungopterini , a tribe of the Conocephalinae with genera in both Australia and Chile. Ozphyllum seems to belong in or near the Brunner’s Group Acripezae, which is not far from Group Cosmophyllae which contains Cosmophyllum . The male subgenital plate of Ozphyllum more closely resembles that of the latter genus than it does that of Acripeza (see Brunner, 1878, Fig. 29c). The fastigium of the vertex is very similar to that of Acripeza but there is no illustration of that structure in Cosmophyllum . The male subgenital plates of both Cosmophyllum and Ozphyllum are remarkably similar to one another but different from that of Ac ripeza. The ovipositor of Cosmophyllum is very different from that of both of the genera above in that it is produced well beyond that abdomen and not bud-like. Because of the similarity of body shape and the structure of the tegmina and other characters noted above, we place Ozphyllum in Brunner’s Group Cosmophyllae, fully realizing that at some point a realignment of genera will eventually be necessary. Ozphyllum species are not normally attracted to lights.