Chewobrachys limbourgi, Constant, Jerome, 2008

Constant, Jerome, 2008, Revision of the Eurybrachidae (XIII). The new Australian genus Chewobrachys (Hemiptera: Fulgoromorpha), Zootaxa 1898, pp. 41-54 : 48-52

Chewobrachys limbourgi n. sp.

Figs. 23–25 , 29–33 .

Etymology. Dedicated to my fat colleague and friend Pol Limbourg (RBINS).

Material examined. Holotype ♂: [6 W Gogango Q, 6 Apr 1957, E F Riek] - dissected, genitalia in glycerine (ANIC). Coordinates of Gogango: 23°40'S 150°02'E.

Paratypes (13 ♂, 7 Ψ): 1 Ψ: [Rton, Dec 1922] [UQIC Reg. # 42756] (UQIC), coordinates of Rockhampton: 23°23'S 150°30'E; 1 Ψ: [Rton, Dec 1922] [UQIC Reg. # 42755] (RBINS); 1 ♂: [Rton, Dec 1922] [UQIC Reg. # 42757] (RBINS); 1 ♂: [Rton, Dec 1922] [UQIC Reg. # 42758] (UQIC); 1 ♂: [Rton, Dec 1922] [UQIC Reg. # 42759] (UQIC); 1 Ψ: [Rton, Jan 1923] [UQIC Reg. # 42760] (UQIC); 1 ♂, 2 Ψ: [R'ton, on wattle, L. Franzen] - 1 Ψ dissected, genitalia in glycerine (QM, 1 Ψ: QDPI); 2 ♂: [R'ton, on wattle, L. Franzen] [Rockhampton, Queensland] (SAM, RBINS); 1 ♂: [R'ton, on wattle, L. Franzen] [Rockhampton, Queensland] [ Platybrachys sanguiflua Walk. Id. by R. Harvey] (SAM); 1 Ψ: [R'ton, on wattle, L. Franzen] [22] [Brit. Mus. 1923-313] (BMNH); 2 ♂, 1 Ψ: [R'ton, Jan 1923] [Rockhampton, Queensland] (SAM); 1 Ψ: [Rockhampton, Australia, Janson, 1870] (OUMNH); 1 ♂: [Queensland] (SAM); 1 ♂: [Taroom, Dec '29] (QDPI), coordinates of Taroom: 25°39'S 149°48'E; 1 ♂: [SEQ: 24°48'S x 149°47'E, Brigalow Res. Stn, site 4, 29 Oct- 16 Dec 2000.

Cook & Monteith. FIT. brigalow. 170 m. 9815] (QM) coordinates of Brigalow Reserve Station: 24°48'S 149°47'E; 1 ♂: [Cunnumulla, Q., 12 Nov. '38, N. Geary], coordinates of Cunnamulla: 28°04'S 145°41'E - dissected, genitalia in glycerine (AMS).

Note: Seven females from Cunnumulla and one from Rockhampton are not listed as paratypes while one male has been captured at that place because following morphometrical and colour characters, they have been attributed to C. sanguiflua .

The following females are attributed to C. limbourgi on the basis of morphometrical and colour characters given in diagnosis: Queensland: 1 Ψ: Biloela (24°25'S 150°30'E), 26.xi.1932 [QDPI]; 1 Ψ, 1 Ψ? (abdomen missing): Peak Downs (22°56'S 148°05'E) [BMNH].

Diagnosis. Males can be identified by examination of the genitalia. The females have tegmina more elongate (LTg/BTg more than 2.44), with costal margin slightly sinuate and white spots of hind wings less developed than in C. sanguiflua .

Description. LT: ♂ (n = 13): 13.3 mm (11.9–14.2); Ψ (n = 7): 14.8 mm (14.3–15.4).

Head: variegated, grey-olivaceous to brown-olivaceous; sides of vertex darker; lateral sides of head paler; clypeus and labium reddish brown; antennae brown; frons with unprecise, transverse, paler markings; ratio BV/LV = 3.5-4.5; BF/LF = 2.0.

Thorax: pro- and mesonotum coloured same as head, often with two paler patches on posterior half of disc; metanotum and ventral face bright red; ratio LP+LM/BT = 0.90; LM/LP = 2.6.

Tegmina: brown to dark brown with irregular paler, testaceous to green-olivaceous markings, covered with white waxy secretion in fresh specimens; larger transverse paler marking on corium close to base, showing a median brown stripe in males; clavus with median paler marking; paler marking at postero-costal angle and spots more numerous apically; veins suffused with green (figs 24–25); ratio LTg/BTg = ♂: 2.63, Ψ: 2.56 (2.44–2.7).

Hind wings: brown with base bright red; pale white spot apically at each angle; females with spots smaller and postero-sutural spot often obsolete (figs 24–25).

Legs: bright red with tibiae and tarsi darker; spines of hind legs brown to black.

Abdomen: bright red with genitalia testaceous.

Genitalia ♂: lateral process of gonostyli digitiform, rounded apically, placed at basal third of height in lateral view (fig. 29), placed laterally in ventral view; gonostyli in ventral view with internal margins in contact on most of length and external margin slightly concave after process (fig. 30); aedeagus with dorsal margin nearly straight and ventral margin slightly concave apically in lateral view, not showing small teeth (figs. 32– 33).

Biology. Six specimens of this species have been captured on wattle ( Acacia sp., Fabaceae ) in Rockhampton and one specimen has been taken at a flight interception trap. The current distribution of the species is limited to south-eastern Queensland.

Figures

FIGURE 23. Distribution map. Chewobrachys limbourgi, C. sanguiflua and unidentified females of Chewobrachys in Australia.

FIGURES 24 – 28. 24, Chewobrachys limbourgi ♂, dorsal view. 25, C. limbourgi Ψ, dorsal view. 26, C. sanguiflua ♂, dorsal view. 27, C. sanguiflua Ψ, dorsal view. 28, C. sanguiflua Ψ, left lateral view.

FIGURES 29 – 33. Chewobrachys limbourgi, genitalia ♂. 29, pygofer, anal tube and gonostyli, left lateral view. 30, pygofer and gonostyli, ventral view. 31, anal tube, dorsal view. 32, phallic complex, dorsal view. 33, phallic complex, left lateral view. An: anal tube; G: gonostyli; Py: pygofer. Scale 1 mm.