Sundarion marmoratum Sakakibara & Creão-Duarte, sp. nov., 2016

Creão-Duarte, Antonio J. & Sakakibara, Albino M., 2016, Two new species of Sundarion (Hemiptera: Membracidae: Darninae) and taxonomic notes on two congeneric taxa, Zoologia (e 20150119) 33 (1), pp. 1-7 : 2-4

Sundarion marmoratum Sakakibara & Creão-Duarte, sp. nov.

Figs. 5-8 , 21-22

urn:lsid:zoobank.org:act:0CE70866-109A-4FB5-A7C9-E3522847E7EB

Diagnosis. Head yellowish-brown; pronotum with same color, variegate dark-brown on metopidium and dorsum between supra-humeral horns, darker towards tips; supra-humeral horns relatively short, strongly divergent, slightly curved, tapering towards apex, abrupt and truncate with posterior angle acute; posterior process less variegated, with large whitish-yellow patch at each side, close to margin, and distinct black round spot.

Measurements (in mm). Female/male. Total length 10.00/7.48; length of pronotum 8.80/6.40; width of head 4.60/3.60; length of head 1.60/1.44; distance between humeral angles 4.52/3.60; distance between apices of supra-humeral horns 6.80/5.40.

Description. Holotype female ( Figs. 5-7 ). Head triangular ( Fig. 7 ), almost 4x wider than long, yellowish-brown, thin median line and around each ocellus, brown; surface of vertex smooth, finely striate, slightly depressed near ocelli, superior margin widely arched; eyes ovoid; ocelli closer to each other than to eyes, situated just bellow transocular line; supra-antennal ledges flat with margins straight; frontoclypeus egg-shaped extended about half its length bellow margins of supra-antennal ledges. Pronotum ( Figs. 5-7 ) yellowish-brown, variegated with dark-brown on metopidium and on dorsum between supra-humeral horns; supra-humeal horns dark-brown towards apex, relatively short, about 2x longer than wide at base, flattened, tricarinated, strongly divergent, slightly curved backwards, narrowed to apex, truncate, with posterior angle pointed; posterior process low, dorsal line descending straight from metopidium to distal apex, apical third strongly constricted laterally, subulate and acuminate, terminating at level of fifth apical cell of forewings; sides of posterior process at middle with a large whitish-yellow patch close to margins enclosing distinct black spot. Forewings ( Fig. 5 ) transparent, colorless, except brown smoked spot throughout second apical cell; five apical and two discoidal cells, transversal veins s, r-m, and 2 m-cu present. Undersurface of thorax and legs brown; abdomen yellowish-brown.

Male ( Fig. 8 ). Similar to female, smaller. Yellowish-castaneous, variegated on metopidium but less evident, also the whitish-yellow lateral patch with black spot not so evident. Supra-humeral horns short and almost horizontal. Genitalia ( Figs. 21-22 ): pygofer more or less triangular with lateral plates distinct and well developed, slightly pointed dorsally; subgenital plate elongate, about 3x longer than wide, more or less inflated, rounded at apex; aedeagus U-shaped, globose, with minute teeth on anterior surface; styles recurved, hook-like.

Material examined. Holotype female, “ GUYANE FRANÇAISE / Montagne des Chevaux / V – 2014 /Polyvie – S.E.A.G.” ( DZUP) ; Paratypes: 6 males and 4 females, with same label data ( DZUP) .

Comments. This species is similar to Sundarion flavum (Fairmaire) ( Figs. 16-18 ) in its overall aspect but smaller and darker, with variegated metopidium ( Fig. 8 ). It closely resembles Sundarion notabile Souza & Rothéa ( Figs. 9-12 ), both of which have similar coloration and variegated pronotum. It can be distinguished by a whitish-yellow patch on each side of the posterior process, around a black spot, which is more pronounced in females. The male genitalia of S. marmoratum sp. nov. are also distinctive in having the subgenital plate inflated and more rounded apically, and the aedeagus globose.

Figures

Figures 1-8. Habitus. (1-4) Sundarion flavopiceum sp. nov.: (1-3) female, holotype; (4) male; (5-8) S. marmoratum sp. nov.: (5-7) female, holotype; (8) male. Scale bar = 5 mm.

Figures 16-25. Habitus and male genitalia. (16-18) Sundarion flavum: (16-17) female; (18) male; (19-20) S. flavopiceum sp. nov.; (21-22) S. marmoratum sp. nov.; (23) S. notabile; (24) S. compressicornis comb. nov.; (25) S. flavum. Scale bar = 5 mm.

Figures 9-15. Habitus. (9-10,12) Sundarion notabile, female; (11) male; (13-15) S. compressicornis comb. nov.: (13-14) female; (15) male. Scale bar = 5 mm.