Two new species of Chariergus White are described from Brazil: Chariergus caeruleus, from Bahia, Minas Gerais and Espirito Santo and C. paranaensis., from Parana, Santa Catarina and Rio Grande do SuI. Ethemon brevicorne, sp. n. is described from Argentina (Cordoba). A key to species of Chariergus is added

Napp, Dilma Solange

Reynaud, Dalton T.

English

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INSECTA MUNDI, Vol. 12, Nos. 1 & 2, March-June, 1998  155 New species of Chariergus White and Ethemon Thomson. (Coleoptera, Cerambycidae, Compsocerini) Dilma Solange Napp Departamento de Zoologia Universidade Federal do Parana C.P. 19020; CEP: 81.531-990 Curitiba, Parana, Brasil and Dalton T. Reynaud Departamento de Zoologia Universidade Federal do Parana C.P. 19020; CEP: 81531-990 Curitiba, Parana, Brasil Abstract: Two new species of Chariergus White are described from Brazil: Chariergus caeruleus, from Bahia, Minas Gerais and Espirito Santo and C.  paranaensis., from  Parana, Santa Catarina and Rio  Grande do  SuI.  Ethemon brevi-corne, sp. n. is described from Argentina (Cordoba).  A key to species of Chariergus is added. Key words. Cerambycinae; Chariergus; Compsocerini; Ethemon; taxonomy. Introduction Based on a study of the genera of Compsocer-ini whose females present a  pygidial brush, new species of Chariergus White and Ethemon Thom-son were  recognized.  The  former,  with 3  known species  all described from  Brazil  (Monne,  1993), was  never  revised;  a  revision  of Ethemon  was published by Napp (1979). The material belongs to the following institu-tions:  Departamento  de  Zoologia,  Universidade Federal do Parana, Curitiba (DZUP);  Museu Na-cional,  Universidade  Federal do  Rio  de  Janeiro, Rio  de Janeiro (MNRJ); Museu de  Zoologia,  Uni-versidade de Sao Paulo, Sao Paulo (MZSP). Chariergus caeruleus, new species (Figure 1) Male: Head, prothorax, mesosternum,  scutel-lum,  anterior  and  intermediate  coxae  orangish red; elytra metallic blue; antennae and legs black to  reddish  castaneous;  metasternum,  metacoxae and urosternites black to castaneous. Head finely,  shallowly, densely punctate, with orang  ish red pubescence.  Frons as long as wide. Antenniferous  tubercles  prominent.  Maximum length of genae  subequal to half width of lower ocular lobe. Apical segments of maxillary and la-bial palps triangular-shaped. Antennae  eleven-segmented;  unarmed,  with-out  carinae;  exceeding  elytral  apices  by  4  seg-ments. Segments III-XI cylindrical, slender, finely punctate,  pubescence  denser  toward  apical  seg-ments; ventral surface of III-IV with scattered se-tae.  Scape  somewhat  thickened;  finely,  densely punctated, pubescent and with scattered,  recum-bent setae. Segment III twice as long as scape and 114  longer than V,  latter sligthly longer than IV; VI-VIII almost as long as V;  segment XI  about 1/3 shorter than III, not appendiculated. Prothorax longer than wide; rounded at sides, conspicuously  attenuated  towards  front  margin; maximum width at middle or just behind. Prono-tum  without  tubercles.  Pronotum  and  sides  of prothorax  sides  very  finely,  densely  punctate throughout, with dense,  recumbent,  orangish red pubescence.  Basal  2/3  of  prosternum  glabrous, finely striated, punctures absent; posterior 113 and intercoxal  process  shallowly  punctate,  rugulose, with  short,  whitish  pubescence.  Metasternum sparsely punctate and pubescent in disk, vestiture denser laterad. Elytra  narrow,  elongated,  parallel-sided,  al-most 4.5x as long as width across humeri; humeral width subequal to  maximum width of prothorax; apices  obliquely  truncated  or  shallowly  emargi-nated; with coarse, contiguous to corrugated, deep punctures throughout  and  sparse,  short,  recum-156 bent reddish castaneous pubescence; usually with lor 2 dorsal, irregular, carinae. Legs slender, elongate, posterior pair twice as long as prolegs. Femora slender, feeble and gradu-ally clavate; shallowly, finely punctate, punctation denser in mesofemora; castaneous, recumbent pi-losity, without erect setae; metafemora exceeding elytral apices by more than 113 their length. Tibiae slender,  cylindrical,  without carinae.  Tarsi elon-gated with about % length of tibiae; first segment of metatarsi longer than following conjointly,  sec-ond elongate, as long as fifth. Urosternites  shallowly  microcorrugated  with sparse, whitish pubescence. Urosternite V in both sexes strongly transverse, truncated apically. Female: Similar to male. Antennae exceeding elytral apices by 2.5 to 3 segments; VI-X decreas-ing in length; XI  as long as half of III. Apical bor-der of urosternite V with short, reddish, fringelike pilosity.  Seventh  urotergite  with  pygidial  brush formed by long, silky, redish hairlike setae. Measurements:  in  mm,  respectively  male/ female. Total length, 9.0 - 6.8/10.0 - 6.2; prothorax length,  1,8  - 1.3/2.0  - 1.3;  prothorax width,  1.4 -1.111.5  - 1.0;  elytral  length,  6.5  - 5.017.3  - 4.5; humeral width, 1.5 - 1.2/1.7 - 1.2. Types: Holotype male from Pedra Azul, Minas Gerais,  Brasil,  XI. 1972,  Seabra  &  Oliveira  col. (MNRJ). 81  paratypes from Brazil as follows:  Ba-hia, Encruzilhada (Motel da Divisa, Estrada Rio-Bahia, km 960,  960m),  1 female,  XI. 1972, Seabra &  Roppa col.  (MNRJ). Minas Gerais, Aguas Ver-melhas,  1  male,  XL 1970,  F.M.  Oliveira  col. (MNRJ); Pedra Azul,  5 males, 1 female, XII. 1970, F.M.  Oliveira  col.  (MNRJ)  ,  1  male,  XII,1970, Seabra & Oliveira col. (MNRJ), 4 males, 3 females, X.1972, Seabra &  Oliveira col.  (MNRJ)  , 20 males, 16  females,  XL 1972,  Seabra  &  Oliveira  col. (MNRJ)  ,  10 males, 8  females,  XL 1972,  Seabra & Oliveira col.  (DZUP),  3 males, 3 females, XI.1972, Seabra  &  Oliveira  col.  (MZSP).  Espirito  Santo, Colatina,  1  male,  III. 1972,  F.M.  Oliveira  col. (MNRJ);  Linhares,  1  male,  4.XII.1971,  A.C. Domingos col. (DZUP). Remarks: Chariergus caeruleus  is very simi-lar to C.  tabidus (Klug, 1825) from which it differs mainly by the  metallic blue elytra.  Other differ-ences are less conspicuous: the new species is more elongated and slender; the prothorax has no trace of lateral tubercles and the metafemora of males exceed  the  elytral  apices  by  almost  half  their length. Vol. 12, Nos. 1 & 2, March-June, 1998, INSECTA MUNDI Chariergus paranaensis, new species (Figure 2) Male: Head and prothorax orangish red, the intercoxal  process  of  prosternum  and  anterior margins of procoxae blackish. Antennae black with segments IX-X  yellowish  white.  Elytra yellowish with 2 brownish black fasciae: first before middle (in 2 specimens forming more or less rounded dor-sal maculae) and second behind middle reaching sutural and  external margins.  Meso- and  meta-sternum,  legs  (including  coxae),  scutellum,  and urosternites black. Head  smooth;  pilosity  almost  inconspicuous. Frons twice as wide as long. Antenniferous tuber-cles rounded, not prominent. Maximum length of genae 2/3 of width of lower ocular lobe. Antennae  exceeding elytral apices  by  2  to  3 segments,  unarmed,  without  carinae.  Segments cylindrical;  VI-X  slightly  depressed,  feebly  pro-jected at outer apical angle;  III-V finely,  densely punctate  with  dense,  reddish  brown  pubescense and conspicuous setae beneath; VII - XI  micropu-bescent, IX-X  with dense,  yellowish white micro-pubescence. Scape feebly enlarged; with fine, mod-erately  dense  punctures,  integument  opaque; sparse, castaneous pilosity.  Segment III twice  as long as scape and 115  longer than V;  IV slightly shorter than V; XI about 113 shorter than III. Prothorax  smooth  with  scattered  fine  punc-tures  and  few  elongated,  lateral  setae;  sparse, whitish pubescence near posterior margin. Slightly longer than wide;  strongly constricted near front margin thereafter enlarged, subtuberculated, wid-ened towards middle  and then attenuated back-wards. Pronotum with 4 latero-dorsal weakly ap-parent gibbosities, posterior ones more prominent; somewhat  raised  centro-longitudinally.  Protho-racic sides with almost inconspicuous whitish mi-cropubescence. Basal 2/3  of prosternum glabrous, finely  striated,  punctures absent;  posterior third and intercoxal process opaque with fine punctures, whitish  pubescence  and  elongated  setae.  Meso-and  metasternum  shallowly,  very  finely  and densely punctate; whitish pilosity contrasting with dark integument. Elytra wider than maximum width of protho-rax;  about  3.5  times  longer  than  width  across humeri; parallel-sided, conjointly rounded apically. Surface  shiny,  sparsely  punctated,  pubescence poorly conspicuous.  Scutellum clothed with silky, white pilosity, obscuring the integument. INSECTA MUNDI, Vol. 12, Nos. 1 & 2, March-June, 1998  157 Legs moderately long,  posterior pair about 1.5 times as long as prolegs. Femora somewhat thick-ened, clavate; shallowly, sparsely, finely punctate with whitish,  recumbent pilosity;  erect setae ab-sent; metafemora feebly  exceeding elytral apices. Tibiae slightly depressed, not carinate; with mod-erately dense, elongated, whitish setae. Tarsi with yellowish  white  pilosity;  metatarsi  somewhat longer than protarsi; first segment of metatarsi as long as 2nd and 3rd conjointly. Urosternites  microcorrugated;  clothed  with silky,  yellowish  white  pilosity.  Urosternite  V strongly transverse, apically truncated. Female:  Similar  to  male.  Antennae  excced elytral apices by 1.5 - 2.0 segments. Elytral vesti-ture denser. Metafemora at most reach elytral api-ces.  Urosternite V emarginated apically. Seventh urotergite with a pygidial brush of long, silky, red-dish hairs. Measurements: in mm, respectively male Ife-male. Total length, 11.5 - 10.8/11.7 - 10.7; protho-rax length, 2.2 - 2.0/2.2 -2.0; prothorax width, 2.0 -1.7/1.8  - 1.7;  elytral  length,  8.2  - 7.7/8.5  - 7.8; humeral width, 2.5 - 2.2/2.3 - 2.2. Types:  Holotype  male  from  Quatro  Barras (Pico  do  Parana,  1700m),  Parana,  Brazil.  Three paratypes from  Brazil as follows:  Parana, Quatro Barras  (Pico  do  Parana,  1700m),  1  female, 22.1.1970,  Laroca  &  Becker col.  (DZUP).  Santa Catarina: Serra Geral (28'02 49'35, 1700m),  1 fe-male,  XII. 1962,  F.  Plaumann  leg.  (DZUP).  Rio Grande do SuI: Porto Alegre, 1 male, 1926, P. Buck col. (MZSP). Remarks: C.  paranaensis looks like  C.  quad-ripunctatus Lucas, differing by:  1)  the smooth in-tegument of head, prothorax and elytra, the latter with scattered punctures and pubescence; 2)  sides of prothorax, just behind the anterior constriction, subtuberculated, as wide  as in the middle;  3)  pi-losity of legs yellowish white contrasting with the dark integument; 4)  femora sparsely punctate. In C.  quadripunctatus  the  head  and  the  prothorax are densely punctulate and pubescent; the elytral surface is opaque, densely pubescent; the protho-racic sides are gradually widened toward the mid-dle, the pilosity of the legs is castaneous and the femora are densely punctate. The deposited holo-type of C. quadripunctatus, housed in the Museum National d'Histoire Naturelle, Paris, was studied. According to the data label, the specimen from Santa  Catarina  was  probably  collected  nearby Urubici. Key to the species of Chariergus 1.  Elytra  with  coarse,  contiguous  punctures throughout.  Antennae  black  to  castaneous, without pale segments. Prothorax laterally not tuberculate ....................................................... 2 -Elytra almost smooth or micropunctate. Anten-nal  segments  IX-X  pale.  Prothorax  laterally tuberculate  ........................................................ 3 2(1).  Elytra metallic blue. Metafemora (males) ex-ceeding elytral apices by near half length. (Fig. 1).  Brasil  (Bahia,  Minas  Gerais,  Espirito Santo)  ................................... C.  caeruleus  n.sp. -Elytra yellowish. Metafemora (males) exceeding elytral apices by about 113 of their length. Bra-sil (Goias, Minas Gerais, Espirito Santo to Rio Grande do SuI), Uruguai .................................. . ...................................... C.  tabidus (Klug, 1825) 3(1).  Elytra orangish,  concolorous.  Scutellum  or-angish. Brasil (Minas Gerais, Rio de Janeiro to Santa Catarina)  ................................................ . .............................. C. signaticornis Lucas, 1857 -Elytra orangish with 2  castaneous fasciae,  be-fore  and  behind  middle.  Scutellum  black  to castaneous ........................................................ 4 4(3).  Pronotum  smooth,  glabrous.  Elytra  shiny, with  sparse,  fine  punctures.  (Fig.  2).  Brasil (Parana, Santa Catarina, Rio Grande do SuI)  . .......................................... C. paranaensis n. sp. -Pronotum densely puncta  ted, pubescent. Elytra opaque. Brasil (Parana, Santa Catarina) ........ . ........................  C. quadripunctatus Lucas, 1857 Ethemon brevicorne, new species (Figure 3) Female:  Orangish  red;  elytra  metallic  blue, shiny; antennae (except scape), tibiae and uroster-nites black brownish. Head  shallowly,  finely  punctate,  denser,  ru-gulose behind ocular lobes;  sparse, reddish pilos-ity.  Vertex not depressed between antenniferous tubercles, latter rounded. Maximum length of ge-nae feebly shorter than width of lower ocular lobe. Antennae short,  scarcely exceeding middle of elytra; unarmed, without carinae. Scape cylindri-cal somewhat enlarged, as long as 2/3 of segment III;  with fine,  scabrous  punctures  denser  basad and long, reddish setae. Segment III longest, twice as long  as  IV and  113  longer than V;  VI-XI  de-creasing  in  length,  VIII-XI  conspicuously  short-ened with half length of III. Segments III-V with 158 fine, dense, scabrous punctures and long, castane-ous setae conspicuosly denser along inner side of V; VI-XI clothed with castaneous pubescence. Prothorax  wider  than  long;  sides  diverging towards middle forming rounded tubercle, thereaf-ter attenuated towards posterior margin; slightly tuberculated  between  front  margin  and  medial tubercle.  Pronotum  somewhat  convex,  posterior gibbosities weakly prominent, anterior inconspicu-ous;  shallowly, densely, finely punctate except in broad longitudinal medial area;  decumbent,  red-dish pubescence. Sides of prothorax with pilosity and punctation similar to those of pronotum, punc-tures  somewhat  asperate.  Pro  sternum  glabrous, shallowly, finely striated. Metasternum with scat-tered,  fine  punctures,  denser anterolaterally;  pi-losity sparse. Elytra shiny,  coarsely corrugated throughout with fine, almost inconspicuous punctures; decum-bent, reddish brown pilosity, weakly conspicuous. Elytral apices conjointly rounded. Femora  gradually  clavate;  sparsely  punctate with  long,  reddish  setae;  metafemora  reaching apical third of elytra.  Tibiae depressed,  not cari-nate. Urosternites scarcelly punctate. Urosternite V strongly transverse, slightly emarginated apically. Seventh  urotergite  with  pygidial  brush  of long, silky, reddish hairlike setae. Measurements: in mm, female. Total length, 9.1  - 7.8;  protorax  length,  1.7  - 1.5;  prothorax width, 2,0 - 1,8; elytral length, 6,5 - 7,5; humeral width, 2.3 - 2.1. Types:  Argentina.  Cordoba:  Capital  (?) [handwritten], holotype female, X.1947, J. M.  Bosq (MNRJ);  paratype  female,  1939,  A.  Parko  col. (DZUP). Remarks:  In  the  key  to  the  species  of Ethemon published by Napp (1979),  E.  breuicorne will key to E.  weiseri  Bruch, also described from Argentina,  whose  females  are  unknown  (Bruch, Vol. 12, Nos. 1 & 2, March-June, 1998, INSECTA MUNDI 1926;  Napp,  1979).  Napp  (1979)  examined a  syn-type male of the latter which differs from the new species by: 1) antennae, legs, scutellum, meso- and metasternum black;  2)  pronotum and prothoracic sides without punctures,  the pronotal gibbosities prominent; 3) antennae carinated. In E.  breuicorne the antennal scape, femora, scutellum, meso- and metasternum are orangish red; the pronotum and sides of prothorax are punctate and pubescent and antennae are not carinate. It differs from the fe-males of the other known species of Ethemon by the short antennae, reaching the middle of the ely-tra and shiny, coarsely corrugated elytra. References Bruch,  C.  1926.  Cerambicideos  nuevos  0  poco conocidos. Physis 8 (30):338-348. Klug,  J.  C.  1825.  Entomologiae  Brasilianae specimens  sistens  insectorum  nondum  de-scriptorum centuriam.  Nova Acta Academiae Caesareae  Leopoldino-Carolinae,  12(2):421-476. Lucas, P. H. 1857. Entomologie in Animaux nou-veaux ou rares recueillis pendant r expedition dans  les  parties  centrales  de  l'Amerique  du Sud, de Rio de Janeiro a Lima, et de Lima au Para,  executee  par  ordre  du  Gouvernement Frangais pendant les annees 1843 a  1847, so us la direction du Comte F.  de  Castelnau. Paris, Bertrand, 204 p. Monne, M. A.  1993. Catalogue of the Cerambyci-dae (Coleoptera) of the Western Hemisphere. Part VIII.  Sao Paulo, Sociedade Brasileira de Entomologia, 97 p. Napp,  D.  S.  1979.  Revisao  do  genero  Ethemon Thomson,  1864  (Coleoptera,  Cerambycidae). Revista brasileira de Biologia 39(4):901-917. White, A.  1855. Catalogue of the coleopterous in-sects  in  the  collection  of  British  Museum. Longicornia 2. London. 8:175-412. INSECTA MUNDI, Vol. 12, Nos. 1 & 2, March-June, 1998  159 2 Figures 1 - 2.  1.  Chariergus caeruleus, new species, holotype male; 2,  C. paranaensis, new species, holo-type male. A.  M.  Sakakibara photo. Figure 3. Ethemon brevicorne, new species, holotype female. A.  M. Sakakibara photo. 

Catalogue of the Cerambycidae (Coleoptera) of the Western Hemisphere. Part VIII. Sao Paulo,

Catalogue of the coleopterous insects in the collection of British Museum.

Cerambicideos nuevos 0 poco conocidos.

Entomologiae Brasilianae specimens sistens insectorum nondum descriptorum centuriam. Nova Acta Academiae Caesareae Leopoldino-Carolinae,

Revisao do genero Ethemon Thomson,

New species of Chariergus White and Ethemon Thomson (Coleoptera, Cerambycidae, Compsocerini

New species of Chariergus White and Ethemon Thomson (Coleoptera, Cerambycidae, Compsocerini

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