ISSN 0373-5680 Rev. Soc. Eniomol. Argent. 60 (1-4): 249-254/ 2001 Species of Bembidiina (Coleoptera: Carabidae: Bembidiini) from the sandy beaches of Rio Grande do Sul, Brazil ---- ROIG-JUNENT, Sergio* and Norton M. GIANUCA** * IADIZA, C.C. 507" 5500 Mendoza, Argentina; e-mail: [email protected] ** Dep. de Oceanografia, Fundacao Universidade Federal do Rio Grande, FURG, C. Postal 474/ Rio Grande, RS 96201-900/ Brazil; e-mail: [email protected] • ABSTRACT~ Species of Bernbidiina (Coleoptera: Carabidae: Bernbidiini) are re­ corded in Brazil for the first time in this contribution. Two species of Bembidiina have been found in the sandy beaches of southern Brazil, Peryphus (Chilio­ peryphus) cassinensis sp. nov. and Notaphus (Notaphus)laticolle (Brulle). These species were collected only in the supratidal zone of the beaches. Peryphus cassinensis n. sp. is placed within the subgenus Chilioperyphus Jeannel, together with the two other known species of this subgenus. The only specimen exami­ ned of Notaphus Stephens belongs to the widespread species N.laticolle. KEY WOR[)S" Carabidae. Bembidiina. Peryphus cassinensis. Notaphuslaticolle" Brazil. • RESUMEN. Especies de Bembidiina (Coleoptera: Carabidae: Bembidiini) de las playas de Rio Grande do Sul, Brasil. En esta contribución se da a co­ nocer por prirmera vez la presencia en Brasil de dos especies de Bembidiina (Coleoptera: Carabidae: Bembidiini). Las dos especies de Bembidiina encon­ tradas en las playas arenosas del sur de Brasil son Peryphus (Chilioperyphus) cassinensis sp. nov. y Notaphus (Notaphus) faticolle (Brulle). Estas especies fueron recolectadas sólo en el habitat supral itoral de las playas. Peryphus cassinensis sp. nov. es ubicada en el subgenero Chilioperyphus Jeannel, que posee dos especies conocidas. EI unico especimen de Notaphus Stephens re­ colectado pertenece a la especie ampliamente distribuida: N.laticolle. PALABRAS CLAVE. Carabidae. Bembidiina. Peryphus cassinensis. Notaphus leticolle. Brasil. INTRODUCTION a thousand species (including most rnernbers of the subtribe Bembidiina) and it is divided in se­ Few carabid beetles of the tribe Bembidiini are veral subgenera or species groups. In contrast, known forBrazil. Until now all of them belonged European authors follow Jeannel's criteria to the subtribes Tachyna (Erwin, 1974a, b, 1975), (Jeannel, 1941) and have split Bembidion in nu­ Xystosomina (Erwin, 1973), and Anillina (Cicchino ITlerOUS genera, arranged in six natural groups, & Roig-Iufient, in press). This is the first record of called phylogenetic series. In his revision of the Bembidiina in Brazil. Southern South American species, Jeannel There are two positions regarding the syste­ (1962) recognized two of these groups of gene­ maries of Bembidiina. North American authors, ra, Notaphus and Peryphus, and added a new like ~v'\addison 0993), consider that this subtribe one, the Plataphus group. includes five genera (Lindroth, 1963; Erwin & In the present contribution we cite two species Kavanaugh, -1981). One of them, Bernbidion La­ of Bernbidiina for Brazil that inhabit the suprali­ treille, is a large genus probably with IT10re than toral zone of southern beaches of Rio Grande do 249 Rev. Soc. Entornol. Argent. 60 (1-4), 2001 SuI. These species are placed in different genera, following the criterion of European authors. MATERIAL AND METHODS Methods, descriptive terrns, and criteria for taxo­ nomic range follow leannel (1962) and Erwin & Kavanaugh (1981). Illustrations were made with camera lucida adapted to a compound microscope. The materials studied are housed at the Depar­ tarnento de Oceanograffa of the Fundacao Uni­ versidade Federal do Rio Grande (FURG), Rio Grande, RIO Grande do SuI, Brazil and lnstituto Argentino de Investigaciones de las Zonas Aridas (IA[)IZA), Mendoza; Argentina. RESULTS Peryphus (Chilioperyphus) cassinensis sp. nov (Figs. 1-3) Holotype. Male, 17 km south of Cassino Beach, Rio Grande do Sui, Brazil. 2-X-1994, N. M. Gia­ nuca col. (FURG) Paratvpes, Male, 17 krn south of Cassino Beach, Rio Grande do Sui, Brazil, 2·-X-1994, N.M. Gianu­ ca col. (iADIZA); male, 18 krn south of Cassino Beach, Rio Grande do Sui, Brazil, 1-XI-1993, N. M. Gianuca col. OADIZA); fernale, 17 km south of Cas­ sino Beach, Rio Grande do Sui, Brazil, 1-X-1994, N.N\. Gianuca col. (FURG). Fig. 1. Habitus of Peryphus cassinensis n. sp. Scale bar Etymology. The species name refers to the ex­ represents 1 mm. tensive beach of Cassino, where the specimens were .collected. Head. Eye size moderate, longer than wide. Diagnosis. Head with frons and vertex impunc­ Head smooth, impunctate, and convex dorsally, tate, frontal furrows parallel, not extended towards not constricted posterior to eyes; frontal furrows clypeus; eye longer than wide, size moderate; ter­ shallow and broad, parallel, not extended ante­ minal palpornere of maxillary palpi less than 0.20 riorly onto clypeus; dorsal paraorbital groove pre­ times the length of penultirne palpomere; pronotum sent, with two supraorbital setiferous punctures; narrow and constricted basally; lateral margin si­ antennae long and slender, antennomeres subrec­ nuate basally; posterior angles notched; elytra uni­ tangu lar, scape with one anteroapical seta, anten­ formly yellowish (without maculae), hurnerous nornere 2 with apical ring of setae, apical half of rounded; eight striae, punctuated, intervals smooth, antennorneres 3-4 with dense pubescence; 5 to impunctuate, striae 3 with two foveate setiferous 11 covered with dense, short setae in addition to punct~res; stria 8 markedly costate in apical half; apical ring:' mandibles prorrect, long; maxillary hindvvings present; abdominal sterna each with one and labial palpi long, except terminal palpomeres pair of pararnedial setae in both sexes. very short, less than 0.2 times length of penulti­ Description. Size: 4.8 mm. Habitus (Fig. 1) with mate palpomere; mentum with a rounded tooth; head large, pronotum narrow, and elytra proportio­ glossal sclerite with two setae; paraglossae long. naiy long. Color: body and appendages yellow pale. Prothorax. Pronotum maximum width at middle: 250 ROIG-JUNEf\lT, S. and N.M. GIAl\JUCA. Species of Bembidiina (Coleoptera) 2 Figs. 2-3. Peryphuscassinensis sp. n07). 2, median lobe left lateral view: 3, left pararnere. (Scale bar represents 0.5 mm). disc moderately convex, constricted basally; in front of the coastal dunes, a zone which is only basal margin straight; apical angles right; ante­ flooded by seawater during extreme storm tide rior transverse impression absent)' but with a events. A few insects have adapted to survive the­ row of bead rufotestaceous; median longitudi­ se immersion periods! while others actively avoid nal impression impressed; laterobasal foveae submersion through temporary displacements to­ smooth, shallow; one rnidlateral setiferous ward even upper parts of the beach such as the puncture. Prosternal intercoxal process margi­ primary dunes; Although the Bernbidiina distri­ nate. Pterothorax. Elytra rnoderately flat, scutellar bution covers the dry areas of the supratidal zone, stria with five or six small punctures; striae with they are more conspicuous on the borders of small punctures well impressed on apical re~ freshwater streams that drain marshes and gion, decreasing in size toward apex. Striae ponds located behind the coastal dunes. They slightly grooved throughout. Recurrent stria appear to feed upon larvae and adults of other confluent with the fifth stria. Subapical plyca fossorial species, like the abundant rove beetles present; intervals flat or very slightly convex; (Staphylinidae) B/edius bonariensis Bernhauer umbilicate series of setiferous punctures on stria and Bledius rnicrocephalus Fauvel, the heteroce­ 8. Legs. Protarsomere 1 expanded and with rid Efflagitatus freudei Pacheco, the hydrophiIid small pads of adhesive hairs ventrally in males; Paracymus rufocinctus Bruch and the pigmy mole all male protarsomeres dorsally sulcate. Meso cricket (Tridactylidae) Neotridacty/us carbonelli and metatarsomeres long and slender. Female Gunther. Another predator, cornpeting for the sa­ tarsomeres long and slender. Male genitalia (Fig. me food that Periphus cassinensis sp. nov., is the 2). /\;1€dian lobe moderately narrow, with apex carabid Schizogenius costiceps Steinheil. Toget­ spatulate, and basal bulb with most right wall her, all these species constitute a sort of burrowing lacking; ventral margin concave in lateral view; assemblage characteristic of that zone of the internal sac without brush sclerite, flagellum long, beach (Gianuca, 1994; 1997; Vanin et a/., 1995). not extended beyond the basal bulb (Fig. 2). Left Relationships with other Bembidiina, Peryphus pararnere (Fig. 3) stiliform, with three apical setae. cassinensis sp. nov. is included in the same group Distribution. The specimens recorded are only of genera (phylogenetic series sensu leannel. from the type locality (Fig. 4). 1962) that include the genus Petvphus Stephens Habitat, Peryphus cessinensis sp. nov. dig its because it lacks angulate humeral margin, has se­ burrows on the supratidal zone of the extensive, tiferous punctures of elytra on stria 3, and basal gently sloping, fine grained, oceanic beaches of bulb of median lobe without most right wall. Rio Grande do Sui State, Brazil. The supratidal Whithin this group of genera we included this zone, or backshore, is the upper part of the beach new species in the genus Peryphus because it has 251 Rev. Soc. Entornol. Argent. 60 (1-4), 2001 l I II Notaphus (N.) laticolle