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

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Ganiagraecia karwinia

Gen. et sp. nov.

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

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

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

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” GoogleMaps . 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) GoogleMaps . 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) GoogleMaps .

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 View TABLE 2

Differential diagnosis. Male. Antenna thin, about 5 times the length of body, annulate. Eye prominent, positioned high on head ( Figs 9A, B View FIG ). 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 View FIG ). 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 View FIG ) short, stout, with single internal tooth, apex acute, suggesting a minute tooth; subgenital plate with styles more robust than normal ( Fig. 9M View FIG ), 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 View FIG ). Cercus distinctly curved inwards ( Fig. 9N View FIG ); subgenital plate about as broad as long, acutely tapering to apex, apex shallowly incised ( Fig. 9O View FIG ). Ovipositor longer than length of body, weakly upcurved, unarmed ( Table 2 View 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 View FIG A-B, D, G), subgenital plate light brown. Males with fastigium of vertex and median portion of pronotum with a black stripe ( Fig. 9A View FIG ), caudal half of pronotum black. Tegmina thin, colourless except for internal apical portion abdomen immediately beneath apex of tegmina dark ( Fig. 9A, K View FIG ). Female with head with brown stripe and with a thin white stripe in the middle ( Fig. 9C View FIG ); dark brown stripe extending from cephalic margin of pronotum to almost apex of abdomen ( Fig. 9B View FIG ), but not including tenth tergite.

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

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 View FIG ). 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 View FIG

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 View FIG ). Males have a simple cercus ( Figs 9I, J View FIG ) with a prominent internal tooth. Females bear a depression (glandular opening?) on the posterior portion of the mesothorax ( Fig. 9D View FIG ). The female cercus has a distinctive incurved tooth-like apex ( Fig. 9N View FIG ).

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.


Departamento de Geologia, Universidad de Chile


Australian National Insect Collection