Ganiagraecia karwinia, Rentz, Su & Ueshima, 2021

Rentz, Dcf, Su, You Ning & Ueshima, Norihiro, 2021, Studies in Australian Tettigoniidae: New short-winged Agraeciini from Australia (Orthoptera: Tettigoniidae; Conocephalinae; Agraeciini), Zootaxa 5059 (2), pp. 1-72 : 18-19

Ganiagraecia karwinia 0 Rentz, Su and Ueshima Gen. et sp. nov.

ANIC Number, Gen. Nov. 9, sp. 9

Figs 9 A-K; Figs 20C, D ; Fig. 21A ; Fig. 22b A ; Table 2 , Map 4

Common name. Grass Tree Katydid

Holotype male. ( In alcohol) 1. “ 25.26S 152.56E Mt. Tibrogargan (parking area), Glass House Mts. Qld. 15 August 1985 D. C. F. Rentz, R. Chiang, Stop 12”. 2. “collected as nymph, matured in laboratory 16.x.85”. 3. “ D. C. F. Rentz, Cytol. prep. 85-29”. 3. “Song recorded S-363”. 4. “ ANIC database #14008749” . Holotype in alcohol in Australian National Insect Collection, Canberra. Paratypes. Queensland. 25 o 26’S 152 o 56’E Glass House Mts, Mt Tibrogargan , (parking area), 15.viii.1985 (DCF Rentz, R. Chiang, Stop 12, 10 males, collected as nymphs, matured in laboratory 16.x, 18.x, 20.x, 25.x.1985; DCF Rentz, Cytol. Prep. 85-18, -19, -20 -21, -27, -28; 5 females, same locality data and maturation dates, ANIC) . 26 o 54’S 152 o 56’E Glass House Mts, Mt Ngungun (parking area), 9.viii.1985 (DCF Rentz, R. Chiang, Stop 4, 2 males, collected as nymphs, matured in laboratory 18.x, 20.x.1985; 13 females, collected as nymphs, matured in laboratory 18.x, 20.x.1985; Cytol prep. 85-17, ANIC) .

Type locality. The type locality is a rather open woodland with many Grass Trees, Xanthorrhoea sp. , tall eucalypts and a dense undercover of herbs and grasses. The katydids were abundant in the lush weedy vegetation.

Measurements. Table 2

Differential diagnosis. Male. Antenna thin, about 5 times the length of body, annulate. Eye prominent, positioned high on head ( Figs 9A, B ). Cephalic margin of pronotum straight, caudal margin feebly concave. Prothorax with a prominent pair of thin spines; meso- and metathorax each bearing prominent tubercles ( Figs 9D, G ). Hind tibia armed dorsally on each side with many spines, packed close together, ventral surface with 6 or 7 very thin spines on each side. Cercus ( Figs 9I, J ) short, stout, with single internal tooth, apex acute, suggesting a minute tooth; subgenital plate with styles more robust than normal ( Fig. 9M ), median incision shallow, V-shaped.

Female. Differs from male in following. Thorax with a depression (glandular opening?) on the posterior portion of the mesothorax ( Fig. 9D ). Cercus distinctly curved inwards ( Fig. 9N ); subgenital plate about as broad as long, acutely tapering to apex, apex shallowly incised ( Fig. 9O ). Ovipositor longer than length of body, weakly upcurved, unarmed ( Table 2 ).

Colouration. Overall colouration straw brown with minute greyish brown speckles over entire dorsal portion of body; ventral surface of body creamish white ( Figs 9 A-B, D, G), subgenital plate light brown. Males with fastigium of vertex and median portion of pronotum with a black stripe ( Fig. 9A ), caudal half of pronotum black. Tegmina thin, colourless except for internal apical portion abdomen immediately beneath apex of tegmina dark ( Fig. 9A, K ). Female with head with brown stripe and with a thin white stripe in the middle ( Fig. 9C ); dark brown stripe extending from cephalic margin of pronotum to almost apex of abdomen ( Fig. 9B ), but not including tenth tergite.

Distribution. Known only from the Glasshouse Mts., Queensland ( Map 4 ).

Habitat. Common in open woodland vegetated by tall eucalypts and Xanthorrhoea .

Seasonal occurrence. Adults found in mid spring.

Stridulatory file. File very distinctive ( Figs 20C, D ). Proximal portion with approximately 20 large teeth, decreasing in size and approximately 24-26 minute teeth on a raised swelling.

10 Karwin is an aboriginal word for Grass Trees, Xanthorrhoea species.

Karyotype. 2n male= 31 (30t +Xt) Fig. 22b A

Recognition. Very easily recognised by the combination of the yellow brown body colour with dark brown median dorsal stripe which contrasts with the distinct colour of the pronotum ( Fig. 9L ). Males have a simple cercus ( Figs 9I, J ) with a prominent internal tooth. Females bear a depression (glandular opening?) on the posterior portion of the mesothorax ( Fig. 9D ). The female cercus has a distinctive incurved tooth-like apex ( Fig. 9N ).

Discussion. This species appears to be endemic to the Glasshouse Mts. Its appearance and habitat preference is similar to that of Australiagraecia species but morphologically very different.

Figures

FIG. 9. Ganiagraecia karwinia.A. Adult male. B. Adult female, note dimorphic for pronotal colouration. C. Female head. Note fastigium of vertex. D. Adult female, tubercles of meso- and metathorax. E. Adult female, right hind femur. F.Adult male, frons. G. Adult male, thorax. Note prothoracic spines and tubercles of meso- and metathorax. H. Adult male, tip of abdomen, dorsal view. I. Left male cercus, dorsal view. J. Left male cercus, ventral view. K. Left male tegmen. L. Adult male, head and pronotum. Note fastigium of vertex. M. Adult male subgenital plate, ventral view. N. Adult female, tip of abdomen. Note shape of supraanal plate and shallow median sulcus. O. Adult female subgenital plate.

FIG. 20. Stridulatory files. A. Australiagraecia spina holotype. B. Australiagraecia minuta. C. Ganiagraecia karwnia, Cytol. prep. 85-19. D. Ganiagraecia karwinia, S-363. E. Gwynnagraecia viridis, Kerragullen. F. Gwynnagraecia perplexa, Fitzgerald River. G. Latitatagraecia kalamaya, Cytol. prep. 2001-1. H. Latitatagraecia vulgivaga, Cytol. prep. 88-66. I. Cooloolagraecia wallum, paratopotype. J. Cooloolagraecia gubbi, paratopotype. K. Kokominiagraecia dicra, S-373. L. Coptaspis sp. 2. M. Timabarragraecia samneilli, paratopotype.

FIG. 21. Song recordings. A. Ganiagraecia karwinia S-363. B. Kokominiagraecia dicra S-392. C. Timabarragraecia samneilli S-82. D. Coptaspis sp (Yarrangobilly, NSW) S-391.

FIG. 22A. Cytology. A. Australiagraecia spina holotype. B. Australiagraecia spina, Cytol. prep. 81-81. C. Australiagraecia spina, South Australia Cytol. prep. 78-32. D. Australiagraecia helleri, Cytol. prep. 81-154. E. Australiagraecia helleri, Cytol. prep. 82-147. F. Australiagraecia minuta, Holotype. G. Australiagraecia tagera, Cytol. prep. 81-111.

MAP. 4.