A new species of Polynoncus Burmeister, 1876 from Brazil (Coleoptera: Trogidae) Huchet, Jean-Bernard Costa-Silva, Vinicius Da Zootaxa 2018 2018-11-26 4524 5 553 566 49DSX Pittino, 1987 Pittino 1987 [371,907,511,538] Insecta Trogidae Omorgus GBIF Animalia Coleoptera 6 559 Arthropoda species triestinae Omorgus  ( Figs. 14–18)   Type material examined.  HOLOTYPE ♂and seven paratypes: “Muséum Paris, Brésil, Minas-Geraes, de Castelnau 1847 / 7/47” ( MNHN).  Other specimens examined. 102 specimens. “  BOLIVIA: Santa Cruz, Chiquitos, 1,6 km ESSE Santiago de Chiquitos,  622m, 18°12'04”S, 59°21'00”W,  XI.2008, carcass, W.D. Edmondsleg.” ( 5♂, 5♀CEMT). “  BRAZIL: Distrito Federal, Planaltina, ESEC Águas Emendadas, 15°32'31”S, 47°36'49”W,  16-31.XI.2009, M.R. Frizzasleg.” ( 6♂, 1♀ CEMT); “ Planaltina, ESEC Águas Emendadas, 15°32'31”S, 47°36'49”W,  1-15.XI.2009, M.R. Frizzasleg.” ( 8♂, 4♀ CEMT); “ Planaltina, ESEC Águas Emendadas, 15°32'31”S, 47°36'49”W,  16-31. XII.2009, M.R. Frizzasleg.” ( 2♀ CEMT); “ Planaltina, ESEC Águas Emendadas, 15°32'31”S, 47°36'49”W,  16-31.X.2009, M.R. Frizzasleg.” ( 1♂, 4♀ CEMT); “ Planaltina, ESEC Águas Emendadas, 15°32'31”S, 47°36'49”W,  1-15.I.2010, M.R. Frizzazleg.” ( 1♂ CEMT); “ Planaltina, ESEC Águas Emendadas, 15°32'31”S, 47°36'49”W,  I.2011, M.R. Frizzasleg.” ( 5♂, 4♀ CEMT); “ Brasília, Parque Nacional de Brasília, 15°43'46”S, 47°57'23”W,  24.XI.2016, Interceptação de voo, M.V.C. Rochaleg.” ( 1♂ CEMT); “ Brasília, Parque Nacional de Brasilia, 15°51'22”S, 47°48'48”W,  21. XII.2015, N.H.D. Silvaleg.” ( 1♂, 1♀ CEMT); “ Brasília, Parque Nacional de Brasilia,  12.I.2016, N.H.D. Silvaleg.” ( 1♂ CEMT). “  Goias, Parque Nacionaldas Emas, [ 18°7'20”S, 52°54'30”W], 1999, G. Machadoleg.” ( 2♂, 1♀ CEMT); “ Jataí, Fazenda Nova Orlândia,  I.1964, Martins, Morgate & Silvaleg.” (1 MZSP). “  São Paulo, Itirapina, Estação Ecológica de Itirapina,  735m, 22°13'56”S, 47°52'58”W,  30.I.2009, Fernando Silvaleg.” ( 1♂ CEMT); “ Itirapina, Estação Ecológica de Itirapina,  735m, 22°13'56”S, 47°52'58”W,  2. II.2000, G. Machadoleg.” ( 1♂ CEMT); “ Itirapina, Estação Ecológica de Itirapina, 22°15’S, 47°49’W,  14.V.2001à  15.I.2002, Equipe Biotaleg.” (16 MZSP); “ Marília,  I.1948” (1 MZSP); “ Ribeirão Preto, Fac. Medicina,  XI.1954, M.P. Barrettoleg.” ( 4♀ MZSP); “ Ribeirão Preto, Fac. Medicina,  I.1955, M.P. Barrettoleg.” ( 1♂, 1♀, 4 unsexed MZSP); “ Itu, Faz. Pau d’Alho,  II. 1959, U. Martinsleg.” ( 1♂ MZSP); “ Pirassununga,  18.XI.1940, Schubartleg.” (1 MZSP); “ Pirassununga,  27.X.1945, Schubartleg.” (1 MZSP); “ Pirassununga,  6.I.1946, Schubartleg.” (1 MZSP); “ Pirassununga,  3. III.1945, Schubartleg.” (1 MZSP); “ Anhembi,  XI.1957, E. Denteleg.” (1 MZSP); “ Botucatu,  22.II.1955, Wernerleg.” ( 1♀, 1 unsexed MZSP). “ Ibirá,  X.1953, Diringsleg.” ( 1♀ MZSP). “  Mato Grosso do Sul, Porto Murtinho,  I.1930, R. Spitzleg.” (1 MZSP); “ Porto Murtinho,  XI.1929, R. Spitzleg.” (1 MZSP). “  Minas Gerais, Uberlândia, CampusUFU [= Universidade Federal de Uberlândia], [ 18°55'06”S, 48°15'28”W],  11.II.2006, J. Mendesleg.” ( 1♀ CEMT). “  PARAGUAY: Concepcíon, Zanja Moroti,  30.I.2005, P. Gandinileg." ( 3♂, CJBH).  Species validation.  Omorgus( Omorgus) triestinaewas described by Pittino (1987)based upon a series of 12 specimensfrom Minas-Geraes ( Brazil) curated at the MNHN, Paris ( France). In all likelihood, all the specimens from the typeseries were collected by F. Laporte de Castelnau himself during his expedition in South America ( 1843–1847), the results of which were subsequently published in several volumes ( Laporte 1850–1861). According to Pittino (1987), this new species is closely allied to  O.( Omorgus) suberosus( Fabricius, 1775)and  O.( Omorgus) howelli(Howden & Vaurie, 1957), but can be distinguished from both species by the presence of well-developed elytral tubercles (barely raised or obsolete in  O. suberosusand  O. howelli) as well as the characteristic and very distinctive shape of the aedeagus with parameres spaced basally, widely exposing median lobe ( Figs. 15–16), and finally by the presence of a sclerotized piece within the endophallus ( Fig. 18). In his revision of the Trogidaeof South America, Scholtz (1990: 1407), after having examined the holotypeand three paratypesof Pittino's species, considered that this species corresponds, “ without doubt”, to  O. suberosusand placed consequently  O. triestinaein synonymy with  O. suberosus.In this regard, Scholtz mentioned: “ The holotypeis a somewhat unusual form with tomentose elytral costae (…). The male genitalia, claimed by the author to be quite different from those of suberosus, merely have the paramere apices far apart (probably an artefact of the dissection to remove them), and the internal sac armature, which was also claimed to be unique, varies greatly within the species.   FIGURES 14–18.  Omorgus triestinaePittino, 1987, male. 14, habitus, dorsal view (red arrows indicate discontinuous yellow tomentosity and white arrows indicate median-basal and lateral-basal tubercles of pronotum); 15, aedeagus, dorsal view; 16, aedeagus, with parameres intentionally spread out to show the shape of the median lobe; 17, aedeagus, lateral view; 18, sclerotized piece of the endophallus (Drawings courtesy (figs. 15 and 18): R. Pittino). The recent study of more than five hundred South American trogid specimens related to “  O. suberosus” from different institutions (CEMT, CJBH, MNHN, MZSP, and ZUEC), complemented by the examination of the typeseries of  O. triestinaeprovides clear evidence that the morphological characteristics mentioned by Pittino (1987)in his diagnosis are perfectly applicable and constant within many specimens of the studied material. Moreover, as clearly illustrated here ( Figs. 15-18), the male genitalia are specific and distinct from those of  O. suberosus( Figs. 20–22), indicating that we are not observing the expression of a clinal morphological variation of a polymorphous species within its geographical area.  Omorgus triestinaeis restricted to central South America, to the Cerrado and Pantanal biomes, as well as an area of transition between the Cerrado and Atlantic Forest. Both biomes present little anthropic disturbance when compared to other biomes of South America. Thus, it appears that  Omorgus triestinaeis sensitive to anthropic actions, also differing from the widespread  Omorgus suberosus. These morphologic features lead us to propose herein the restoration of  O. triestinaeas valid species. The main diagnostic morphological differences between both species are summarized in Table 1.   Remark. Vaurie (1962: 145)suspected that some “unusual” specimens of  O. suberosusfrom Bolivia, Brazil, and Paraguaycould belong to a different species based on the shape of the tubercles and distinctly elevated costae. She stated: “ Three or four specimens from Santa Cruz, Bolivia, some from Paraguay, and one from Batataes, Brazil, have the tubercles of at least the two inner principal rows of each elytron much more elevated than usual  and with a heavier tomentosity; the males have slightly different genitalia. Possibly these represent another species, but I believe that they are variants of suberosus.“ Distribution( Fig. 23). Central part of South America. 2028522313 MNHN Brazil Bresil 6 559 1 1 holotype 2028522269 [587,707,690,715] 2008-11 CEMT W. D. Edmonds Bolivia Santa Cruz 622 -18.201113 Santiago de Chiquitos 21 -59.35 Chiquitos 6 559 10 5 5 2028522248 2009-11-16 2009-11-31 2009-11-16 ESEC, CEMT M. R. Frizzas Brazil Distrito Federal -15.5419445 Aguas Emendadas 21 -47.61361 Planaltina 6 559 7 1 6 2028522232 2009-11-01 2009-11-15 2009-11-01 ESEC, CEMT M. R. Frizzas Brazil -15.5419445 Aguas Emendadas 21 -47.61361 Planaltina 6 559 12 4 8 2028522302 2009-12-16 2009-12-31 2009-12-16 ESEC, XII, CEMT M. R. Frizzas Brazil -15.5419445 Aguas Emendadas 21 -47.61361 Planaltina 6 559 2 2 2028522347 2009-10-16 2009-10-31 2009-10-16 ESEC, CEMT M. R. Frizzas Brazil -15.5419445 Aguas Emendadas 21 -47.61361 Planaltina 6 559 5 4 1 2028522231 2010-01-01 2010-01-15 2010-01-01 ESEC, CEMT M. R. Frizzaz Brazil -15.5419445 Aguas Emendadas 21 -47.61361 Planaltina 6 559 1 1 2028522266 2011-01 ESEC, CEMT M. R. Frizzas Brazil -15.5419445 Aguas Emendadas 21 -47.61361 Planaltina 6 559 9 4 5 2028522238 2016-11-24 CEMT M. V. C. Rocha Brazil -15.729444 Parque Nacional de Brasilia 21 -47.95639 Brasilia 6 559 1 1 2028522236 2015-12-21 XII, CEMT N. H. D. Silva Brazil -15.856112 Parque Nacional de Brasilia 21 -47.81333 Brasilia 6 559 2 1 1 2028522230 2016-01-12 CEMT N. H. D. Silva Brazil Parque Nacional de Brasilia Brasilia 6 559 1 1 2028522267 CEMT G. Machado Brazil -18.122223 Emas 21 -52.908337 Parque Nacional 6 559 3 1 2 Goias 2028522237 [423,1367,1122,1147] 1964-01 MZSP Silva Brazil true -18.122223 Fazenda Nova Orlandia 21 -52.908337 Jatai 6 559 1 Goias 2028522240 2009-01-30 CEMT Fernando Silva Brazil 735 -22.232224 Estacao Ecologica de Itirapina 21 -47.882774 Itirapina 6 559 1 1 Sao Paulo 2028522274 2000-02-02 CEMT G. Machado Brazil 735 -22.232224 Estacao Ecologica de Itirapina 21 -47.882774 Itirapina 6 559 1 1 2028522239 2001-05-14 2002-01-15 2001-05-14 MZSP Equipe Biota Brazil 735 true -22.25 Estacao Ecologica de Itirapina 1260 -47.816666 Itirapina 6 559 1 2028522235 [422,741,1266,1291] 1948-01 MZSP Brazil Marilia 6 559 1 2028522234 1954-11 MZSP M. P. Barretto Brazil Fac. Medicina Ribeirao Preto 6 559 4 4 2028522245 [298,1273,1302,1327] 1955-01 MZSP M. P. Barretto Brazil Fac. Medicina Ribeirao Preto 6 559 2 1 1 2028522254 1959-02 MZSP U. Martins Brazil Faz. Pau d'Alho Itu 6 559 1 1 2028522291 [774,1432,1338,1363] 1940-11-18 MZSP Schubart Brazil true Pirassununga Itu 6 559 1 2028522241 [151,793,1374,1399] 1945-10-27 MZSP Schubart Brazil Pirassununga 6 559 1 2028522247 [814,1432,1374,1399] 1946-01-06 MZSP Schubart Brazil Pirassununga 6 559 1 2028522251 [151,751,1410,1435] 1945-03-03 III, MZSP Schubart Brazil Pirassununga 6 559 1 2028522243 [765,1302,1410,1435] 1957-11 MZSP E. Dente Brazil Anhembi 6 559 1 2028522250 1955-02-22 MZSP Werner Brazil Botucatu 6 559 1 1 2028522294 [705,1170,1446,1471] 1953-10 MZSP Dirings Brazil Ibira 6 559 1 1 2028522288 1930-01 MZSP R. Spitz Brazil true Porto Murtinho 6 559 1 Mato Grosso do Sul 2028522233 [734,1336,1482,1507] 1929-11 MZSP R. Spitz Brazil Porto Murtinho 6 559 1 2028522261 2006-02-11 CEMT J. Mendes Brazil Uberlandia -18.918333 Universidade Federal de Uberlandia 21 -48.25778 Campus 6 559 1 1 Minas Gerais 2028522229 [485,1421,1554,1579] 2005-01-30 CJBH P. Gandini Paraguay Zanja Moroti 6 559 3 3 Concepcion