The genus Erlandia (Cerambycinae: Erlandiini) was described by Aurivillius in 1904, containing a single species, Erlandia inopinata, distributed in Bolivia, Argentina, and Paraguay. Anew species, E. megacephala, from Argentina is described, and illustrated here. A key and distribution map of both species are provided, with a generic diagnosis using characters of both species

Di Iorio, Osvaldo R.

English

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INSECTA MUNDI, Vol. 12, Nos. 1-2,  March-June, 1998  1 The genus Erlandia Aurivillius, 1904 (Coleoptera: Cerambycidae) in Argentina, with the description of  a new species Osvaldo R. Di Iorio Entomologia, Departamento de Ciencias Biol6gicas, Facultad de Ciencias Exactas y Naturales, 1428 Ciudad Universitaria, Buenos Aires, Argentina.  Internet: Diiorio@artro.uba.ar Abstract: The genus Erlandia (Cerambycinae: Erlandiini) was described by Aurivillius in 1904, containing a single species, Erlandia inopinata, distributed in Bolivia, Argentina, and Paraguay. Anew species, E. megacephala, from Argentina is described, and illustrated here. A key and distribution map of both species are provided, with a generic diagnosis using characters of  both species. Key Words: Coleoptera, Cerambycidae, Erlandia, new species, Argentina. Introduction The tribe Erlandini (Coleoptera: Cerambycidae: Cerambycinae) contains one genus, ErlandiaAurivil-lius 1904, until  now monotypic (Monne, 1993). Erlan-dia inopinata Aurivillius 1904, was described from Bolivia, although  it  was later  reported  from Argentina (Bruch, 1912; Prosen, 1947; Buck, 1959; Viana and Williner, 1974), and Paraguay (Viana, 1972). In this work a new species found in Argentina is described, the known distribution of E. inopinata is extended, and  a generic diagnosis is  provided  from characters of both  species. Collections examined:  IML: Instituto Miguel Lillo, Tucuman; MACN: Museo Argentino de Cien-cias Naturales  "Bernardino  Rivadavia", Buenos  Aires; MV: Manuel Viana, Rosario de Lerma, Salta; ODI: Osvaldo Dilorio, BuenosAires; OG: Oscar Gonzalez, Charata, Chaco. Key to the species of Erlandia 1. Slender; head and pronotum almost as long as wide, shiny reddish  brown, slightly darker than elytra; midline  of the  pronotum  differentiated in  a smooth, shiny area; mandibles long and thin, projected  forward, the basal  2/3 straight, the end curved, tip sharp ................................................  . ............................................. Erlandia inopinata 1'. Robust; head and pronotum wider than long, matte dark reddish brown; midline of  the pro  no  tum not differentiated from the rest of the surface; man-dibles short, thick, tips blunt (Fig. 2) .............. . ........................................ Erlandia megacephala Erlandia inopinata Aurivillius, 1904 (Fig. 1) Measurements (mm): head width: 3.00; head length: 2.88; prothorax  width: 3.60; prothorax  length: 3.60; maxim  urn elytra width across the middle: 4.20; elytra length: 9.00; total length: 15.48. Literature records: Bolivia: Tatarenda (Auriv-illius, 1904); Paraguay: without  locality data (Viana, 1972); Argentina: Chaco, Salta, Tucuman (Bruch, 1912); Santiago delEstero: Rio Hondo (Prosen, 1947); Salta (Buck,  1959); La Rioja: Patquia (Viana and Williner,1974). Material examined: Argentina: Salta: De-partamento SanMartin, Dique Itiyuro, Rio Carapari, 13-X-1970, Martinez  leg., 1 ex. (ODI); Departamento CoronelMoldes, Cabra Corral, XI -1984, Martinez  leg., 1 ex. (ODI); Tacuil (2400 m), 15 to 28-II, 1 ex. (FML); Catamarca: 6 km N Belen (Isla del Sauce), 1240 m, Willink, Teran, and Stange leg., Malaise trap, 5 exs. (FML); La Rioja: 12 km Chilecito, 1 to 31-II1-1969, Stange, Teran, and Willink leg.,  1 ex. (FML); An-guinan(Chilecito), 1200m, 16to30-XI-1969, Willink, Teran, and Stange leg., Malaise trap, 4 exs. (FML); Patquia, XI-1959, 1 ex. (MV); Chaco: Charata, Gonza-lez leg.: 27-XI-91, 2 exs. (ODI), 2 exs. (OG), 4-XII-92, 3 exs. (OG), 8-XII-92, 2 exs. (OG), 16-XII-92, 2 exs. (OG), 3-XI-94, 1 ex. (ODI), Mercury light  trap; 26-XI-94,1 ex. (OG), Black  light  trap; 21-XI-93, 1 ex. (ODI), 8-XII-93, 2 exs. (OG), Fluorescent tube light trap; 6-XII-93, 2exs. (ODI), 3exs. (OG), underfelled trunk  of Prosopis kuntzei Harms (Mimosaceae); Cordoba: without locality,  "IV-922 /  J.S. Perez" leg.,  1  ex. (MACN); San Luis: Arizona, La Peperina, 1-1982, Martinez leg.,·l ex. (ODI); Arizona, 1 ex. (MV). Erlandia megacephala new species (Figs. 1,2) Holotype measurements (mm): head width: 5.28; head  length: 4.80; prothorax width: 5.04; max-imum elytra width across the middle: 6.00; elytra length: 11.28; totallength: 20.64. Body depressed, robust; head and prothorax al-most as long as elytra. Head subquadrate, lateral margins somewhat rounded; base abruptly conver-gent, smallest width at insertion with prothorax (margins of  base oblique). Dorsum of head coarsely 2  Volume 12, Nos. 1-2, March-June, 1998, INSECTA MUNDI 600  .~  560 ?  I  h·,J 1 i  ~  I  '. A"-_-"_~  __  .,,..~  __  ~=- __  -:_+::_-=_  ...... _ ~  __ j  _________ \  ______ \_._ 2.~--------1----t------:r~ 32 52"  36° Fig. 1. Geographic distribution of the species of Erlandia. Stars: Erlandia inopinata (localities mentioned in the literature, and material  examined; ? province or  country withoutlocality data). Squares: Erlandia megacephala. Horizontal wide stipple: Chaco province (according to Prado, 1993); horizontal narrow stipple: Austro-Brazilian  Transitional  Forests (a), Paranaense (b), and Gallery Forests (c) (several authors); oblique stipple: Monte province (according to Morello, 1958); vertical stipple: Espinal  province (according to Lewis and Collantes, 1973). punctate, denser laterally, extending  downsides and to base; confined toward base on ventral  side, sparser to midline, smooth and shiny; gular area with  trans-verse grooves converging laterally, and touching margin  of  inferior ocular  lobe, and  becoming obsolete before attaining superior ocular lobe, not  visible from above. Punctation sparse among grooves. Inferior ocular lobe reniform, extending upwards in arched triangle with apex rounded. Dorsally, in front of superior ocular lobe, an area with very dense, thick punctation. Clypeus narrow, anterior margin  strong-ly arched, laterally thickened. Antennal tubercles projecting anteriorly on arched margin. Frons very narrow, located in depression between antennal tu-bercles, midline smooth  and  shiny, extending  slightly beyond posterior limit of  antennal tubercles. Genae projected downwards on thick, robust prominence with blunt ends, and small tooth with obtuse tip on the anterior  face. In  front of  gular area, between genal projections, labiogular suture in form of transverse carina, very robust andjutting  out. Mandibles  robust, tips blunt. Antennae with 11 antennomeres, not  surpassing scutellum. Scapus pyriform, long; antennomere II very  small, rounded; antennomeres  III to  VI pyriform, IV shorter than  III, antennomeres  V, and  VI almost  as long as III; antennomeres  VII to XI parallel-sided, VIII shorter than VII, IX,  and X;  XI  longer than rest, slightly arched. Pronotum rectangular, wider than  long; anterior margin slightly concave at  midline; margins subpar-allel, angles rounded; base narrows abruptly, mar-gins parallel. Margins with small  conical  blunt  tooth just  after  middle. Pronotum coarsely  punctate, spars-er medially, denser posteriorly, and laterally, both areas distinctly separated. Prosternum with trans-verse grooves from anterior margin  to anterior  coxae, extended slightly towards sides anteriorly but not visible from above; grooved area  of  triangular  shape. Prosternal  process with  rough surface, widened  pos-INSECTA MUNDI, Vol. 12, Nos. 1-2,  March-June, 1998  3 2 Fig. 2.  Erlandia megacephala new species (holotype). teriorly, posterior  margin  arched and  indented, slightly behind anterior coxae. Scutellum small, wider than long, posterior end rounded. Humeral  width  larger than  width  of  pro  tho-rax at base; rounded humeri, projected slightly for-wards. Elytra almost as long as head and prothorax together; margins subparallel, somewhat arched in middle, wider than the pronotum; external apical angle perfectly rounded; internal apical angle right with elytral suture, slightly dehiscent. Mesosternal  process triangular, narrowed poste-riorly, anterior margin arched, with a blunt  triangu-lar medial projection anteriorly; surface sparsely, coarsely punctate. First visible abdominal sternite twice as long as second; rest narrow; last visible sternite with posterior margin slightly arched. Last visible abdominal tergite projected  very  little beyond last  visible sternite and elytra. All abdominal sterni-tes with thick yellowish hairs on sides, becoming thinner and sp  arser toward midline. Legs short, robust; femora only narrowed at  base. Tibiae slightly shorter than femora, distal end ob-lique; front tibiae with small spatulated lobe  on external apical angle; internal face of middle, and hind tibiae with thick yellowish hairs, becoming longer and denser toward apex, forming a tuft. Two short blunt spines at sides of insertion of tarsi, internal spine larger than external. Last tarsal seg-ment 1.5 or 2 times as long as first. Head dorsum, and  pronotum dark  reddish  brown, almost black, matte; mandibles, genal projections, lateral  carinae, and apical spines oftibiae, margins of scutellum, and a thin  line of  same color along elytral sutures from scutellum to internal apex of elytra. Elytra, central area  of  scutellum, ventral  side of  he  ad, thorax,  coxae,  and abdomen of similar color but lighter than dorsum of head and pronotum. Three basal antennomeres  same color, lighter apically. Legs, labial and maxillary palpi  light  reddish  brown. Thick, light  yellow hairs on edge of  clypeus projected forward to  cover insertion  of  mandibles, on  margins of elytra, and very sparse on their surfaces; anterior margin  of  pro  not  urn with  very short  hairs, all  of  same length. Material examined: Argentina: Tucumim: Departamento Burruyacu, Chilcas VlII-1975 (white label), 1 ex. (ODI), labelled  "HoZotypus", and  "ErZan-dia megacephaZa sp. nov. Dilorio det. 95" (red labels). Generic  diagnosis: body long, depressed; prog-nathous; base of head and prothorax strongly nar-rowed, with  transverse grooves on  ventral  face toward anterior margin; genae projecting downward; each lateral margin of prothorax with a small tubercule just behind middle of  its length; posterior margin of prosternal  process indented; elytra  with  parallel  mar-gins, slightly arched toward middle, external apex rounded, internal  apex straight, somewhat  dehiscent; humerus rounded, projected forward; antenna with 11  antennomeres, ending in front of apical 113  of elytra; legs short, robust; femora narrowed at base; tibiae almost as long as femora, distally widened, obliquely truncate; front tibiae with small spatulate lobe on external apical angle; 2 short blunt spines at sides of  insertion of  tarsi, internal spine larger than external; first  visible abdominal sternite twice as  long as second. Biogeography  and  biology: ErZandia inopina-ta is distributed from Bolivia to San Luis, Argentina (Fig. 1); the majority of localities are in the Chaco phytogeographic province. To  the east it reaches Charata  (Chaco), a site located on the  ecotone between the dry or Occidental Chaco,  and the humid or Oriental Chaco. Two sites (Belen, Tacuil) are situated in  the Monte phytogeographic province. Stange, et aZ. 4  Volume 12, Nos. 1-2, March-June, 1998, INSECTA MUNDI (1976) describe briefly the environment, and  vegeta-tion of  these sites. Toward the south, in the province of  San  Luis, E. inopinata  reaches the Espinal. Erlan-dia megacephala is found in the Dry Chaco, in the province of Tucuman (Fig. 1). No hosts are known  for either species. Their  long, depressed body, and short  legs and antennae, would suggest  adaptations to living under  bark  or  fallen tree trunks (E. inopinata was found underneath a felled Prosopis kuntzei trunk) like other Cerambycidae (Parandra) and Cucujidae (Catogenus, Passandra) of similar  body form. The attraction  to light  and general coloring suggest nocturnal habits. The dates of  cap-ture in  light trap at CharatasuggestthatE. inopina-tahas a short  flight period, from the end  of  November to middle December. References Aurivillius, C.  1904. Cerambyciden aus Bolivien und Argentina gesammelt  von Freiherrn  Erland Norden-skiold. Entomologisk Tidskrift 1904: 205-208. Bruch, C. 1912. CataJogo sistematico de los cole6pteros de la Republica Argentina. Pars VIII. Familia Cer-ambycidae (Prionini, Cerambycini, Lamiini). Revis-ta del Museo de La Plata 18: 19-226. Buck, P. Piovon.1959. CerambycidaeinderSammlung des Instituto  Anchietano de Pesquisas, Porto Alegre, Brasilien. Pesquisas 3:  577-609. Lewis, J. P., and M. B. Collantes. 1973. El Espinal periestepico. Ciencia e Investigaci6n 29: 360-377. Monne, M.  A.  1993.  Catalogue of the  Cerambycidae (Coleoptera) of the Westhern Hemisphere. Part I. Subfamily Cerambycinae: tribes Erlandini, Smodici-ni,  Oemini,  Methiini,  Xystocerini,  Dodecosini, Opsimini,Achrysonini  and  Pleiarthrocerini.  So-ciedade brasileira de Entomologia, Sao Paulo. 76 p. Morello, J. 1958. La provincia fitogeografica del Monte. Opera Lilloana 2:  1-155. Prado, D. E. 1993. Contribution to the study ofthe flora and vegetation of the Chaco. VII. What is the Gran Chaco vegetation in South America? II. A redefini-tion. Candollea 48:  615-629. Prosen, A.  F.  1947.  Cerambycoidea  de  Santiago del Estero. Revista de la Sociedad Entomo16gica Argen-tina 13:  315-334. Stange, L. A., A. L. Teran, and  A. Willink. 1976. Ento-mofauna de  la provincia biogeografica del Monte. Acta Zoo16gica Lilloana 32(5): 73-120. Viana, M. J. 1972. Aporte al catalogo de Cerambycidae del  Paraguay  (Insecta,  Coleoptera).  Revista  del Museo de Ciencias Naturales "Bernardino Rivada-via," Entomologia 3(4): 207-405. Viana, M. J., and G. J.  Williner. 1974. Evaluaci6n de las faunas entomo16gica y aracno16gica de las provincias cuyanas y centrales de la Republica Argentina (Ter-cera comunicaci6n). Acta Cientifica, Serie Entomologia 9:  1-35. 

Aporte al catalogo de Cerambycidae del Paraguay (Insecta, Coleoptera). Revista del Museo de Ciencias Naturales &quot;Bernardino Rivadavia,&quot;

CataJogo sistematico de los cole6pteros de la Republica Argentina. Pars VIII.

Catalogue of the Cerambycidae (Coleoptera) of the Westhern Hemisphere. Part I. Subfamily Cerambycinae: tribes Erlandini,

CerambycidaeinderSammlung des Instituto Anchietano de Pesquisas,

Cerambyciden aus Bolivien und Argentina gesammelt von Freiherrn Erland Nordenskiold. Entomologisk Tidskrift

Contribution to the study ofthe flora and vegetation of the Chaco. VII. What is the Gran Chaco vegetation in South America? II. A redefinition.

Entomofauna de la provincia biogeografica del Monte.

Evaluaci6n de las faunas entomo16gica y aracno16gica de las provincias cuyanas y centrales de la Republica Argentina (Tercera comunicaci6n).

La provincia fitogeografica del Monte.

The genus Erlandia Aurivillius, 1904 (Coleoptera: Cerambycidae) in Argentina, with the description of a new species

The genus Erlandia Aurivillius, 1904 (Coleoptera: Cerambycidae) in Argentina, with the description of a new species

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