Description of five new species of Chinavia ORIAN (Hemiptera, Pentatomidae, Pentatominae) from western and northwestern South America1'2 J. GRAZIA, C.F. SCHWERTNER & A. FERRARI Abstract: Five new species of Chinavia ORIAN (Heteroptera, Pentatomidae) are described and illustra- ted: C. boliviensis nov.sp. from Bolivia, C. chilensis nov.sp. from Chile and Peru, and the following three species from Venezuela, C. ernsti nov.sp., C. heissi nov.sp., and C. neoteretis nov.sp. Key words: Chinavia, morphology of genitália, neotropics, new, species, Nezarini. Introduction known (SCHWERTNER 2005), the greatest di- versity in the Neotropical region, from The genus Chinavia ORIAN was estab- where several new species have been de- lished in 1965 to include nine species from scribed in the last two decades (ROLSTON Afrotropical region, and since then its taxo- 1983; RIDER & ROLSTON 1986; RIDER 1987; nomic status hás been disputed (SCHWERT- EGER 1988; FREY-DA-SILVA & GRAZIA 2001; NER 2005). ROLSTON (1983) considered Chi- SCHWERTNER & GRAZIA 2006). In this paper navia a subgenus of Acrosternwm, including five new species, three from Venezuela, one in it ali species of Acrosternum from the from Bolivia, and one from Chile, are de- western hemisphere. AHMAD (1996), based scribed and illustrated. on ROCHE (1977), considered Chinavia a valid genus and more closely related to Afeara AMYOT & SERVILLE than to Acroster- Material and Methods num. In a tentative tribal classification of The material studied was lent from the Pentatominae, Chinavia was included in the following museums (acronyms and curators tribe Nezarini (RlDER 2005). The monophy- are in parentheses): American Museum of ly of the genus was established by SCHWERT- Natural History, New York, USA (AMNH, NER (2005). R.T Schuh); Museo Argentino de Ciências Chinavia represents a very common Naturales Bernardino Rivadavia, Buenos group of green stink bugs, médium in size, Aires, Argentina (MACN, A. Bachmann); and distributed in Afrotropical, Nearctic Museo dei Instituto de Zoologia Agricola, and Neotropical regions. Polyphagous in Faculdad de Agronomia, Universidade Cen- habit, they have been recorded on hosts of tral, Maracay, Venezuela (MIZA, E. Osuna); more than 30 plant families. Some species Museum National d'Histoire Naturelle, are pests of important crops, i.e. Chinavia Paris France (MNHN, D. Pluot-Sigwalt); acuta (DALLAS) in tropical África, C. hilaris National Museum of Natural History, Wash- (SAY) in the United States and Canada, and ington D.C., USA (NMNH, TJ. Henry). C. impicticornis (SiAl) in Brazil (McPHER- Measurements (mean ± Standard devia- SON & McPHERSON 2000; PANIZZI et ai tion, minimum and maximum values, when 2000). More than 80 species of Chinavia are available) are given in millimeters (Tab. 1); !We are glad to dedicate this species to our friend Ernst Heiss, in appreciation of the important works he hás realised Denisia 19, zugleich Kataloge on Heteroptera, particularly on Aradidae. der OÕ. Landesmuseen 2Contribution No. 481 of the Department of Zoology, Federal University of Rio Grande do Sul. Neue Serie 50 (2006), 423-434 423 Fig. 1: Chinavia heissi nov.sp., holotype o-. the average size of species was defined by In the male genitália, the flaps of the in- comparison with size of other species of the folding of ventral rim of the pygophore (fvr, genus. The proportions of the antennal and Figs 7, 12) are 1 + 1 structures laterally to the rostral segments were indicated as follows: segment X and represent a synapomorphy of "<" smaller than; ">" larger than; ">=>" sub- Chinavia (SCHWERTNER 2005). In general, equal to. When possible, the study of the in- the flaps are subtriangular in shape, ectal ternai genitália was carried out as follows: surface more or less concave and the degree clarification with 10% KOH solution; of bending over genital cup variable; lateral washed with distilled water and stained with margins concave or rectilinear, sometimes Congo red; then, washed with 50% to 100% blackish, crenulate or denticulate, apical ethanol series, and stored in liquid glycerin angle toothed or not; mesial margin sinuose for subsequent observation and illustration. in general, together forming a variable me- Terminology of genitália follows DUPUIS dian excavàtion in posterior view; posterior (1970), SCHWERTNER (2005) and SCHWERT- margin corresponding to the ventral rim of NER & GRAZIA (2006). Illustrations were pygophore. made with digital camera and camera lúcida mounted on a stereomicroscope. 424 Results and Discussion Chínavia boliviensis nov.sp. (Figs2, 6, 11, 16) Description. Dorsal surface dull green, densely punctured with concolorous punc- tures, finer and denser on head, pronotum and scutellum (Fig. 2). Yellow band along margins of head, pronotum, basal third of corium and connexivum. In dark-castaneous to black: line on lateral margins of juga, very apex of scutellum, spots on posterolateral an- gles of urosternites scarcely extending onto connexivum. Hemelytral membrane hya- line. Ventral surface greenish on thoracic pleura and margins of abdómen laterad of spiracles; yellow on sterna and abdominal disc. Spiracles dull green, each placed on an inconspicuous yellow callus. Black line be- tween eyes and base of antenniferous tuber- a», cles present. Antennae olive green; apical half of third, fourth and fifth segments fer- rugineous. Legs uniformly green. Médium size. Male length 14.9, width 6.2. Head. Jugal surfaces flat, margins con- vex to apex, convergent to each other. Pro- portions of antennal segments: I<IWII<IV=V. Apex of rostrum lying be- tween hind coxae. Proportions of rostral segments: I<II»III>IV. Thorax. Anterolateral margins of pronotum inconspicuously convex, humeral angles right angular. Gostai angles of corium rounded, almost attaining posterior margin of connexival segment VI; suturai margins of membrane moderately convex. Ostiolar ruga attaining 2/3 of metapleural width. Ab- dominal venter convex. Medial spine of third abdominal segment short, laterally sinuous, moderately concave in posterior Figs 2-5: Chinavia spp. (2) Chinavia compressed, probably reaching hind coxae view (Figs 6, 11). Median excavation of boliviensis nov.sp., holotype o-; (3) C. (thorax and abdómen displaced by pin). , ,„ chilensis nov.sp., holotype o-; (4) C. ernsti ventral rim U -shaped in ventral view (Fig. novsp _ ho|otype „. (5) c neoteretis Male genitália. Pygophore subtriangu- 16). Depression of ventral wall of pygophore nov.sp., holotype o". lar; posterolateral angles projected posteri- well developed, median carina conspicuous. orly (Figs 6, 11, 16). Genital cup moderate- Dorsal surface of segment X with well ly excavated. Median projection of dorsal marked depression, delimited by keel-like rim trapezoidal, slightly concave at apex; carina (Figs 6, 11). lateral third of dorsal rim not projected over Type material. Holotype: Bolívia, La Paz, Maipiri, genital cup (Fig. 6). Flaps of the infolding of lo-, 10-16.VIII.1989, L.E. Pena coll. (AMNH). ventral rim moderately bent over genital Etymology. Named according the type cup; ectal surface of flaps concave, lateral locality. margins with irregularly spaced denticles, apical tooth present; mesial margin of flaps Distribution. Bolivia. 425 P fvr Figs 6-10: Pygophore, dorsal view (6) Chinavia boliviensis nov.sp.; (7) C. chilensis nov.sp.; (8) C. ernsti nov.sp.; (9) C heissi nov.sp.; (10) C. neoteretis nov.sp. (dr - dorsal rim; fvr - flap of the infolding of ventral rim; p - paramere; tdr - tooth of dorsal rim; x - segment X). Comments. The black spots on uroster- and by the spiracles placed on yellow calli. Tab. 1: Measurements (mm) of Chinavia spp. (HL: head length; HW: nites scarcely extending onto connexivum, The humeri are right angular in C. bolivien- head width; ID: interocular distance; the short abdominal spine and the colored sis nov.sp. and C. macdonaldi, but produced HLE: head length in front of eyes; Al- band along body place this species near C. laterad in C. wygodzinskyi. AV: length of antennal segments I-V, respectively; RI-RIV: length of rostral macdonaldi (ROLSTON) and C, wygodzinskyí segments I-IV, respectively; PL: (ROLSTON). Chinavia boliviensis nov.sp. can Chinavia chilensis nov.sp. (Figs 3, 7, medial pronotal length; PW: be distinguished from both by the yellow in- 12, 17,21,22,23,27,28,31,35) pronotal width across humeri; SP: stead of orange (C. macdonaldi) or red (C. Description. Dorsal surface dark to light medial scutellum length; SW: scutellum width at base). wygodzinskyi) band along the body margins, green speckled with subcaloused yellow HL HW ID HLE Al AM Alll AIV AV RI RN RIU RIV PL PW SP SW C. boliviensis Cf 2.02 2.73 1.56 0.98 0.52 1.04 1.17 1.50 1.63 0.91 1.17 1.11 0.85 2.53 7.45 5.19 4.66 C chilensis crer Mean 2.21 2.71 1.64 1.17 0.55 0.99 1.40 1.46 1.37 0.85 1.47 1.19 0.98 2.09 6.78 4.89 4.16 SD 0.05 0.03 0.03 0.05 0.04 0.06 0.08 0.05 0.09 0.11 0.08 0.04 0.00 0.07 0.19 0.17 0.13 Min 2.15 2.67 1.63 1.11 0.52 0.91 1.30 1.43 1.30 0.78 1.43 1.17 0.98 2.00 6.52 4.66 3.99 Max 2.28 2.73 1.69 1.24 0.59 1.04 1.50 1.50 1.43 0.98 1.56 1.24 0.98 2.13 6.92 5.05 4.26 99 Mean 2.43 2.95 1.76 1.26 0.57 1.11 1.59 1.50 1.45 0.96 1.65 1.35 1.07 2.50 7.45 5.67 4.63 SD 0.16 0.20 0.10 0.10 0.10 0.11 0.20 0.12 0.10 0.10 0.20 0.13 0.13 0.30 0.64 0.59 0.44 Min 2.28 2.73 1.69 1.17 0.46 1.04 1.37 1.37 1.37 0.91 1.56 1.24 0.98 2.26 6.92 5.19 4.26 Max 2.73 3.32 1.95 1.43 0.72 1.30 1.89 1.63 1.56 1.17 2.02 1.56 1.30 3.06 8.65 6.78 5.45 C.