Paisana pampeana, Dellapé, 2008

Dellapé, Pablo Matías, 2008, Paisana: A new genus of Neotropical Rhyparochromidae (Hemiptera: Heteroptera: Lygaeoidea) to accommodate Neopamera brachialis (Stål) and four new species, Zootaxa 1958, pp. 17-30 : 22-24

Paisana pampeana n. sp.

( Figs. 2, 11–15)

Description. Holotype male ( Fig. 2): Total length: 6.27. Head dark brown tinged with red, clypeus brown; with abundant silver short decumbent setae, and longer semierect scattered setae dorsally. Head length: 1.12. Head width: 0.99. Antenniferous tubercles slightly divergent. Eyes rounded, with some setae between ommatidia. Interocular space: 0.54. Ocelli located at same level as imaginary line through posterior margin of eyes, closer to eyes than to collar. Interocellar space: 0.29. Rostrum brown, articles II and III paler, apex of article IV dark brown; with sparse erect setae. Rostrum reaching mesosternum. Rostral length: article I 0.64, article II 0.72, article III 0.59, article IV 0.42. Antenna brown, distiflagellomere with pale fringe with reddish tonalities; with abundant short decumbent setae, and sparse erect setae. Antennal length: scapus 0.53, pedicellus 0.99, basiflagellomere 0.86, distiflagellomere 1.04.

Collar and anterior pronotal lobe dark brown; posterior lobe brown, with 4 longitudinal irregular bands, and with posterolateral angles light brown. Pronotum with short, decumbent setae, anterior lobe with long erect setae. Length of collar, anterior pronotal lobe, and posterior pronotal lobe: 0.11; 0.83; 0.50, respectively. Width of collar, anterior pronotal lobe, and posterior pronotal lobe: 0.72; 1.14; 1.63, respectively. Scutellum brown; punctate; with short decumbent setae and long erect setae like those on anterior pronotal lobe; with Yshaped carina slightly bulky medially. Hemelytra with very short decumbent setae. Clavus with three rows of punctures and an incomplete row on distal 4/5 between median and inner rows, and scattered additional punctures on distal half; color brown. Corium brown, not uniformly pigmented, lateral margins light brown, broadening to form a small subapical macula; external margin of corium slightly concave. Membrane fuscous, with pale veins. Pleura dark brown, acetabular areas and metepimeron brown; punctate and setose, with abundant short silver decumbent setae. Protibiae with numerous minute tubercles over entire ventral surface, and with four equidistant spines on distal half, the first one larger, each bearing a seta. Coxae dark brown, with reddish hues, profemora with a broad brown band on distal 2/3, rest of legs light brown, distal ¼ of meso- and metafemora and pretarsi darker. Legs with decumbent setae more abundant distally on tibiae and tarsi, and with semierect sparse setae.

Abdomen brown. Abdominal length: 2.93. Pygophore ( Figs. 11–12): anterior margin of dorsal aperture rounded; inner projections subtriangular. In lateral view: dorsal margin slightly declivent posteriorly. Parameres ( Figs. 13–14): blade short and slightly curved, shank with inner projection bearing setae on upper margin and basal portion of blade, outer projection with three long setae. Aedeagus ( Fig. 15) with two large lobes on vesica irregularly sclerotized; ejaculatory reservoir with reduced wings, vesica and conjunctiva slightly sclerotized distally.

Distribution. Argentina.

Remarks. The protibiae are unspined in females, with only very minute tubercles. In some specimens the hemelytra do not reach the abdominal apex, whereas in others the profemora are mottled and with a less defined band.

The coloration of some specimens is darker, with pronotum, pleurae, and abdomen dark brown. Others specimens show a well defined pale band on the distiflagellomere; these specimens could be easily confused with Paisana brachialis . These two species are quite similar in both external appearance and male genitalia;

and are sympatric over a large proportion of their known geographic distribution. Paisana pampeana can be separated from Paisana brachialis by the coloration of the legs (the meso- and metafemora of Paisana pampeana are darker on the apical third, whereas those of Paisana brachialis have a subapical dark brown band that contrasts with the lighter coloration of the rest of the femora), the pronotal vestiture (although both species show large erect setae on pronotum, these are more abundant in Paisana pampeana ), and the head length (shorter in Paisana pampeana with short postocular region).

Etymology. The epithet refers to the known distributional pattern of the species, which coincides with the Pampean biogeographical province.

Studied material. Type material. Holotype: ♂, Argentina, Entre Ríos, Colón, Ruinas del viejo molino, 06-II-2003, Grandinetti-Cichino , light trap ( MLP).

Paratypes: Argentina: ENTRE RÍOS: 2 ♂♂, 3 ♀♀, same data as holotype ( MLP) ; 2 ♂♂, Liebig, 01- 2003, L. Caire, T . luz (MLP). BUENOS AIRES: 1 ♂, City Bell, 13- II- 2002, P. M. Dellapé (MLP); 1 ♀, Coronel Suárez, Villa Arcadia, III- 2004, M. Ronderos (MLP). SAN LUIS: 1 ♀, Ea El Centenario, Dpto. Gral. Pedernera, 16-29 de Abril 2007, light trap, M. Donato ( MLP) .

Additional studied material. Argentina: BUENOS AIRES.- 2 ♂♂, 2 ♀♀, ( MACN) ; 2 ♀♀, 8- II- 1936, S. Venturi ( MACN) ; 1 ♀, delta del Paraná, Arroyo Antequera , 3- III- 1946, Bohmerwald ( MACN) ; 1 ♂, Punta Indio ( MACN) ; 1 ♀, Punta Piedras , XI-1998, D. L. Carpintero ( CC) ; 1 ♀, Tigre ( MACN) ; 1 ♀, San Nicolás , 1949, Sonia Rivas ( MACN) ; 1 ♂, Bella Vista , XII-1950, M. Gallardo ( MACN) ; 1 ♂, same locality ( MACN) ; 1 ♀, Quilmes , I-2002, D. L. Carpintero, light trap ( CC) ; 1 ♂, Coronel Suarez, Villa Arcadia , III- 2004, M. Ronderos ( MLP) ; 1 ♀, La Plata , X-2002, C. Melo ( MLP) ; 1 ♂, same locality, 4- IV- 2004, C. Melo ( MLP) ; 1 ♀, same locality, XII-2004, H. Merlo ( MLP) ; 2 ♂♂, 1 ♀, City Bell , 13- II- 2002, P. M. Dellapé ( MLP) ; 1 ♀, Berisso , XII-1987, D. L. Carpintero ( CC) ; 2 ♂♂, 7 ♀♀, Verónica , XII-1998, D. L. Carpintero, light trap ( CC) ; 1 ♀, same locality, 30-XI-2003, D. L. Carpintero, light trap ( CC) ; 1 ♂, Dique Luján , VI-1938, Viana ( CC) ; 1 ♀, San Pedro , X-2003, D. L. Carpintero ( CC) . ENTRE RÍOS: 9 ♂♂, 10 ♀♀, Riachuelo, Río Uruguay , 1930, A. Stevenin ( MACN) ; 7 ♀♀, Colón, Ruinas del viejo molino, 06- II- 2003, Grandinetti-Cichino, light trap ( MLP) ; 2 ♂♂, 1 ♀, Colón , 2002, D. L. Carpintero ( MLP) ; 3 ♀♀, Brazo Largo , XII-1999, D. L. Carpintero ( CC) . SANTA FE: 1 ♂, Rosario de Santa Fe , A. Stevenin ( MACN) .