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