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

publication ID

https://doi.org/ 10.11646/zootaxa.5059.1.1

publication LSID

lsid:zoobank.org:pub:55EFABBA-F43C-4AA5-8B50-776C46DEB1B5

DOI

https://doi.org/10.5281/zenodo.5914271

persistent identifier

https://treatment.plazi.org/id/03AB6566-5952-7269-E592-FDE7FBA4FE35

treatment provided by

Plazi

scientific name

Ganiagraecia karwinia
status

Gen. et sp. nov.

Ganiagraecia karwinia View in CoL 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.

R

Departamento de Geologia, Universidad de Chile

ANIC

Australian National Insect Collection

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