Canthon pygidialis Schmidt, 1922: 65
Balthasar 1939: 192
Blackwelder 1944: 201
Krajcik 2006: 30
Krajcik 2012: 64
Vaz-de-Mello & Cupello 2018: 63
Scybalocanthon pygidialis : Pereira & Martínez 1956: 114
Vulcano & Pereira 1964: 639
Vulcano & Pereira 1967: 554
Halffter & Martínez 1977: 67
Medina et al. 2003: 49
Scybalocanthon pygidiale
Vaz-de-Mello 2000: 194
A taxonomic revision of the genus Scybalocanthon Martínez, 1948 (Coleoptera Scarabaeidae: Scarabaeinae: Deltochilini)
Silva, Fernando A. B.
Valois, Marcely
Zootaxa
2019
2019-07-08
4629
3
301
341
4W3LV
(Schmidt, 1922)
Schmidt
1922
[151,672,1485,1512]
Insecta
Scarabaeidae
Scybalocanthon
Animalia
Coleoptera
30
331
Arthropoda
species
pygidialis
( Figs. 2B, 4T, 5S, 6D)
Canthon pygidialis Schmidt, 1922: 65, 79, 90 (original description and remarks); Balthasar 1939: 192(description); Blackwelder 1944: 201(checklist); Krajcik 2006: 30(catalog); Krajcik 2012: 64(catalog); Vaz-de-Mello & Cupello 2018: 63(data of typespecimens), 64 (figures 85-88). Scybalocanthon pygidialis: Pereira & Martínez 1956: 114, 119 (catalog and identification key); Vulcano & Pereira 1964: 639(catalog); Vulcano & Pereira 1967: 554(distribution, identification key); Halffter & Martínez 1977: 67(species list); Medina et al.2003: 49(fig. 119). Scybalocanthon pygidiale: Vaz-de-Mello 2000: 194(checklist).
Diagnosis. Specimens of S. pygidialisare readily distinguishable from all the remaining species in the genus by the pronotum with longitudinal dark band on midline anteriorly ( Fig. 2B); elytra brown or dark yellow, with black spot almost inconspicuous on the margin ( Fig. 2B); eighth elytral stria with thin carina at the anterior portion; parameres strongly asymmetrical ( Fig. 4T); endophallus with bristles right beside the FLP sclerite ( Fig. 5S); and additional sclerite ( AS) absent ( Fig. 5S).
Description. Body.Oval-elongate. Surface opaque, completely microgranulate. Color. Most of pronotum, lateral portion of hypomera, metaepisternae, metaventrite, abdominal ventrites, pygidium, middle of femora, and tibiae yellow or light brown. Head, elytra, prosternum, mesoventrite, mesoepisternae, trochanters, and proximal and distal portions of femora dark brown or black. Length.8.0– 9.2 mm. Thorax. Pronotum with brown vertical spot on the anterocentral portion ( Fig. 2B), spot not touching the posterior margin of pronotum. Anterior angles of pronotum approximately 85°. Lateral margin regularly curved outward, not forming an angle at the middle portion. Elytra. Striae thin and shiny, punctures inconspicuous. Eighth stria with a thin carina at the anterior portion ( Fig. 3D). Aedeagus.Parameres strongly asymmetrical ( Fig. 4T). Dorsal margin of right paramere curved inward, apex obliquely truncate. Ventral margin of right paramere substraight, with short and rounded excavation at the basal portion. Dorsal margin of left paramere curved inward from the basal to medial portions, apical portion with pointed projection. Ventral margin of left paramere substraight, with short and bilobate excavation at the basal portion, apical portion pointed. SRP circular, with substraight handle-shaped extension ( Fig. 5S). FLP short, comma shaped, with three sets of bristles right beside it ( Fig. 5S); or with two sets of bristles and a set of microbristles right beside it ( Fig. 5T). A+SA with two superposed and elongate sclerites ( Fig. 5S-T).
Type material. Canthon pygidialisSchmidt, lectotype ♂( here designated; SMTD): “Amazonas” // “ Coll. C. Felsch/ Kauf20 / 1918” // “ Canthon/ pygidialis/ n. sp. a. Schmidt” // “ LECTOTYPE ♂/ Canthon/ pygidialis/ Schmidt/ des. F. Z. Vaz-de-Mello”. Paralectotypes 1♂and 4♀( SMTD): “ Surinam” // “ Coll. C. Felsche/ Kauf20 / 1918” // “ PARALECTOTYPE/ Canthon ♂or ♀/ pygidialis/ Schmidt/ des. F. Z. Vaz-de-Mello”. Paralectotype ♀( SMTD): “ Coll. C. Felsche/ Kauf20 / 1918” // “ PARALECTOTYPE/ Canthon ♀/ pygidialis/ Schmidt/ des. F. Z. Vaz-de-Mello”. Paralectotype ♂( NHRS): “ Surinam” // “pygidialis” // “32 / 56” // “3056 / E92 +” “PARA- LECTOTYPE ♂/ Canthon/ pygidialisSchm./ des. F. Z. Vaz-de-Mello”. Paralectotype ♀( NHRS): “ Surinam” // “ pygidiali” // “3054 / E92+” // “ Scybalocanthon/ pygidialis/ Schm/ P. Pereira Det. 60” // “ PARALECTOTYPE ♀/ Canthon/ pygidialis Schm./ des. F. Z. Vaz-de-Mello”. Paralectotype ♀( NHRS): “ Surinam” // “ pygidialis, A. Schm.” // “ Scybalocanthon/ pygidialis / ( Schm) / P. Pereiradet. 60” // “3055 / E92 +” // “ PARALECTOTYPE ♀/ Canthon/ pygidialis Schm./ des. F. Z. Vaz-de-Mello”. Paralectotype ♀( MNHU): “ S. Amerika/ Surinam/ Berlik Paramaribo/ C. HellerS. V.” // “ rufulus?” // “ Canthon/ pygidialis/ n.sp. a. Schmidt” // “117088” // “PARALEC- TOTYPE / Canthon ♀/ pygidialis/ Schmidt/ des. F. Z. Vaz-de-Mello”. Paralectotype ♀( MNHU): “columbi?” / “Coll. L. W. SchaufuB” // “=117089” // “117089” // “ PARALECTOTYPE/ Canthon/ pygidialis/ Schmidt/ des. F. Z. Vaz-de-Mello”. Non-type material [ 86 males, 55 females]: BRAZIL:AMAZONAS: 90 kmN of Manaus( 60°1’34’’W, 3°6’26’’ S), xi.1997, E. Andresen— 15♂ 9♀( CEMT); 90 kmN of Manaus( 60°1’34’’W, 3°6’26’’ S), X–XI.1996, E. Andresen— 2♂ 1♀( CEMT); Manaus, Reserva Adolpho Ducke(sede) ( 59°58’32”W, 02°55’49”S), 3.v.2013, F.Z. Vaz-de-Mello— 5♂ 4♀( CEMT); Manaus, Reserva Adolpho Ducke(sede) ( 59°55’40”W, 2°57’42”S), 16.v.2012, J. Bonanomi— 11♂ 5♀( CEMT); RORAIMA: Pacaraima, primary forest, ix. 1996, 900 m, Ribeiro& Vaz-de-Mello— 1♀( CEMT); AMAPÁ: Serra do Navio, Cava Urucum-Amapari( 51°52’53”W, 00°53’06”S), ix.2000, R. Ribon— 2♂ 2♀( CEMT). VENEZUELA: BOLÍVAR, 85 kmS El Dorado( 6°7’58’’N, 61°25’34’’W), 23–25.viii.1983, B.D. Gill— 2♂( CMNC); km 40 Santa Elena, Icabarú Road, 1000 m( 7°26’20’’N, 61°33’30’’W), 4-6.viii.1986, B.D. Gill— 1♂( CMNC); “km 88”, 8 kmS San Isidro( 6°8’58’’N, 61°25’55’’W), 25.vi–11.vii.1987, S. & J. Peck, lowland rainforest, flight interception trap— 2♀( CMNC); Quebrada de Jaspe( 4°54’30’’N, 61°5’30’’W), 19–20.vii.1986, B. Gill— 1♂( CMNC). FRENCH GUIANA: Maripa, 8.xi.1969, G. Halffter— 1♂( CEMT); 18.4 kmSSE Roura, 240 m( 4°36’38’’N, 52°13’25’’W), 22–24.v.1997, J. Ashe& R. Brooks, flight interception trap(1997-24)— 1♂( CMNC); 18.4 kmSSE Roura, 240 m( 4°36’38’’N, 52°13’25’’W), 25–29.v.1997, J. Ashe& R. Brooks, flight interception trap(1997-81)— 1♂( CMNC); 18.4 kmSSE Roura, 240 m( 4°36’38’’N, 52°13’25’’W), 29.v–10.vi.1997, J. Ashe& R. Brooks, flight interception trap(1997-180)— 1♂ 2♀( CMNC); 27.4 kmSSE Roura, 280 m( 4°44’20’’N, 52°13’25’’W), 23–24.v.1997, J. Ashe& R. Brooks, flight interception trap(1997-22)— 1♂( CMNC); 27.4 kmSSE Roura, 280 m( 4°44’20’’N, 52°13’25’’W), 25–29.v.1997, J. Ashe& R. Brooks, flight interception trap(1997-79)— 1♂ 1♀( CMNC); 27.4 kmSSE Roura, 280 m( 4°44’20’’N, 52°13’25’’W), 10.vi.1997, J. Ashe& R. Brooks, flight interception trap(1997-177)— 6♂ 6♀( CMNC, MZUFPA); 39.4 kmSSE Roura, 270 m( 4°32’43’’N, 52°8’26’’W), 29.v–10.vi.1997, J. Ashe& R. Brooks, flight interception trap(1997-172)— 2♂( CMNC); 41.5 kmSSW Matoury, 50 m( 4°37’22’’N, 52°22’35’’W), 29.v–9.vi.1997, J. Ashe& R. Brooks, flight interception trap(1997-170)— 1♂ 3♀( CMNC); 8.4 kmSSE, Roura, 200 m( 4°40’41’’N, 52°13’25’’W), 25–29.v.1997, J. Ashe& R. Brooks, flight interception trap(1997-88)— 2♂ 1♀( CMNC); 8.4 kmSSE, Roura, 200 m( 4°40’41’’N, 52°13’25’’W), 29.v–10.vi.1997, J. Ashe& R. Brooks, flight interception trap(1997-182)— 9♂ 7♀( CMNC, MZUFPA); D-5, 4 km SE Tonnégrandjunction ( 4°52’10’’N, 52°31’55’’W), 25-27.viii.1995, J.E. Wappes— 1♂( CMNC); Les Eaux Claires, 7 kmN Saül, 220 m( 3°39’46’’N, 53°13’19’’W), 31.v–3.vi.1997, J. Ashe& R. Brooks, pitfall trap, human dung (1997-126)— 2♀( CMNC); Mont Galbao, Saül, 740 m( 3°37’18’’N, 53°16’42’’W), 5–7.vi.1997, J. Ashe& R. Brooks, flight interception trap(1997-153)— 1♂( CMNC); Mont La Fumée, 3 kmNW Les Eaux Claires, 7 kmN Saül, 490 m( 3°39’46’’N, 53°13’19’’W), 1–8.vi.1997, J. Ashe& R. Brooks, flight interception trap(1997-162)— 1♂ 1♀( CMNC); Mont La Fumée, 3 kmNW Les Eaux Claires, 7 kmN Saül, 490 m( 3°39’46’’N, 53°13’19’’W), 1–8.vi.1997, J. Ashe& R. Brooks, human dung trap(1997-163)— 1♂( CMNC); Rivière Lunier, 1899, F. Geay— 1♂ 1♀( CMNC); CAYENNE: Nouragues( 52°40W, 4°5’S), iii.1997, F. Feer— 4♂( CEMT); Paracoufield station, x.2003, F. Feer— 2♂ 2♀( CEMT); Sain Eugène, Barrage de Petit Saut( 53°4’W, 4°5’S), xii.1998, F. Feer— 2♂ 2♀( CEMT); Saint Georgesde I’ Oy- apok ( 51°48’W, 3°54’S), v.2014, F. Feer— 1♂( CEMT). SURINAME: BROKOPONDO, Brownsberg Natuurpark[site 2], 440 m( 4°56’55’’N, 55°10’53’’W), 25.vi.1999, Z. Falin, flight interception trap( FIT121)— 1♂( CMNC); COMMEWIJNE, Akintosoel, CELOS camp, road to Redi Doli, 50 m( 5°16’17’’N, 54°55’15’’W), 2.vii.1999, Z. Falin, dung trap— 1♂( CMNC); Akintosoel, CELOS camp, road to Redi Doli, 50 m( 5°16’17’’N, 54°55’15’’W), 3.vii.1999, Z. Falin— 1♀( CMNC); MAROWIJNE, Nassau Mountains( 4°48’N, 54°36’W), 5.iii.1949, D.C.Gei- jskes— 1♂( CMNC); Palumeu, 160 m( 3°20’56’’N, 55°26’18’’W), 8.vii.1999, Z. Falin, flight interception trap— 1♂ 1♀( CMNC); Palumeu, 160 m( 3°20’56’’N, 55°26’18’’W), 9.vii.1999, Z. Falin, flight interception trap— 3♂ 1♀( CMNC); PARA, 11 kmSE Zanderij Airport, 30 m( 5°23’30’’N, 55°9’30’’W), 20.vi.1999, Z. Falin, flight interception trap— 1♀( CMNC).
Distribution.Known from Brazil( Amapá, Amazonas, and Roraima), Venezuela, French Guiana, and Suriname( Fig. 6D). Endemism areas: Brazilian sub-region: Boreal Brazilian dominion: Imeri, Pantepui, Guianan Lowlands, and Roraima provinces (see Morrone 2014; fig. 12).
Remarks.Male genitalia of specimens from French Guianaand north of Brazil( Amapá) present only two sets of bristles and one set of microbristles right beside the FLP sclerite ( Fig. 5T), while specimens of S. pygidialisexamined from other regions (Amazonas and Roraima) exhibit three sets of bristles right beside the FLP sclerite ( Fig. 5S). However, no significant differences were observed in the external morphology and the shape of parameres among these examined specimens ( Figs. 2B, 4T). The apparent allopatric distribution between these populations may be artificial due to a lack of collections. Therefore, the discrete differences described here may turn out to be continuous if more specimens are examined along this gap, that is, one form can itself intergrades into the other across this putative chain of populations, or if the forms themselves are indeed discrete, the frequency between them may vary across this population. Thus, we chose to describe at this time these two patterns only as an intraspecific variation of Scybalocanthon pygidialis.
2847261615
SMTD
Coll. C. Felsch
Schmidt
Kauf
31
332
2
2
lectotype
2847261401
SMTD
Coll. C. Felsche
Suriname
Kauf
31
332
7
5
2
paralectotype
2847261624
SMTD
Coll. C. Felsche
Suriname
Kauf
31
332
2
2
paralectotype
2847261565
NHRS
Suriname
Surinam
31
332
2
2
lectotype
2847261539
NHRS
P. Pereira Det. & F. Z. Vaz-de-Mello
Suriname
Surinam
31
332
2
2
paralectotype
2847261625
NHRS
Suriname
P. Pereira
Schm
31
332
2
2
paralectotype
2847261427
MNHU
S. Amerika & C. Heller & F. Z. Vaz-de-Mello
Suriname
Paramaribo
31
332
2
2
Paramaribo
paralectotype
2847261521
MNHU
F. Z. Vaz-de-Mello
Suriname
31
332
1
1
Paramaribo
paralectotype
2847261476
1997-11
CEMT
Brazil
-3.107222
Manaus
21
-60.02611
31
332
165
64
101
2847261409
CEMT
Brazil
-3.107222
Manaus
21
-60.02611
31
332
3
1
2
2847261535
2013-05-03
CEMT
Brazil
-2.9302778
Reserva Adolpho Ducke
21
-59.975555
Manaus
31
332
9
4
5
2847261491
2012-05-16
CEMT
Brazil
-2.9616668
Reserva Adolpho Ducke
21
-59.92778
Manaus
31
332
16
5
11
2847261309
CEMT
Ribeiro
Brazil
1996900
Pacaraima
31
332
1
1
Roraima
2847261369
2000-09
CEMT
Brazil
-0.885
Cava Urucum-Amapari
21
-51.881386
Serra do Navio
31
332
4
2
2
Amapa
2847261650
1983-08-23
1983-08-25
1983-08-23
CMNC
Venezuela
6.1327777
85 km S El Dorado
21
-61.426113
31
332
2
2
Bolivar
2847261455
1986-08-04
1986-08-06
1986-08-04
CMNC
Venezuela
1000
7.438889
Icabaru Road
21
-61.558334
Santa Elena
31
332
1
1
2847261482
1987-06-25
1987-07-11
1987-06-25
CMNC
Peck
Venezuela
6.149444
8 km S San Isidro
21
-61.431946
31
332
2
2
2847261419
1986-07-19
1986-07-20
1986-07-19
CMNC
Venezuela
4.9083333
Quebrada de Jaspe
21
-61.091667
31
332
1
1
2847261638
[416,1181,1556,1583]
1969-11-08
CEMT
French Guiana
Maripa
31
332
1
1
2847261619
1997-05-22
1997-05-24
1997-05-22
CMNC
J. Ashe & Brooks
French Guiana
240
4.6105556
18.4 km SSE Roura
21
-52.22361
31
332
1
1
2847261406
1997-05-25
1997-05-29
1997-05-25
CMNC
J. Ashe & Brooks
French Guiana
240
4.6105556
18.4 km SSE Roura
21
-52.22361
31
332
1
1
2847261503
1997-05-29
1997-06-10
1997-05-29
CMNC
J. Ashe & Brooks
French Guiana
240
4.6105556
18.4 km SSE Roura
21
-52.22361
31
332
3
2
1
2847261558
1997-05-23
1997-05-24
1997-05-23
CMNC
J. Ashe & Brooks
French Guiana
280
4.738889
27.4 km SSE Roura
21
-52.22361
31
332
1
1
2847261657
1997-05-25
1997-05-29
1997-05-25
CMNC
J. Ashe & Brooks
French Guiana
280
4.738889
27.4 km SSE Roura
21
-52.22361
31
332
2
1
1
2847261637
1997-06-10
CMNC, MZUFPA
J. Ashe & Brooks
French Guiana
280
4.738889
27.4 km SSE Roura
21
-52.22361
31
332
12
6
6
2847261524
1997-05-29
1997-06-10
1997-05-29
CMNC
J. Ashe & Brooks
French Guiana
270
4.5452776
39.4 km SSE Roura
21
-52.140556
31
332
2
2
2847261429
1997-05-29
1997-06-09
1997-05-29
CMNC
J. Ashe & Brooks
French Guiana
50
4.622778
41.5 km SSW Matoury
21
-52.37639
31
332
4
3
1
2847261383
1997-05-25
1997-05-29
1997-05-25
CMNC
J. Ashe & R. Brooks
French Guiana
200
4.6780553
Roura
21
-52.22361
31
332
3
1
2
2847261542
1997-05-29
1997-06-10
1997-05-29
CMNC, MZUFPA
J. Ashe & R. Brooks
French Guiana
200
32
333
4.6780553
Roura
21
-52.22361
31
332
16
7
9
2847261627
1995-08-25
1995-08-27
1995-08-25
CMNC
French Guiana
4.8694444
Tonnegrand
21
-52.531944
32
333
1
1
2847261593
1997-05-31
1997-06-03
1997-05-31
CMNC
J. Ashe & R. Brooks
French Guiana
220
3.662778
Les Eaux Claires
21
-53.221947
32
333
2
2
2847261654
1997-06-05
1997-06-07
1997-06-05
CMNC
J. Ashe & R. Brooks
French Guiana
740
3.621667
Saul
21
-53.27833
Mont Galbao
32
333
1
1
2847261431
1997-06-01
1997-06-08
1997-06-01
CMNC
J. Ashe & R. Brooks
French Guiana
490
3.662778
Saul
21
-53.221947
Mont La Fumee
32
333
2
1
1
2847261352
1997-06-01
1997-06-08
1997-06-01
CMNC
J. Ashe & R. Brooks
French Guiana
490
3.662778
Saul
21
-53.221947
Mont La Fumee
32
333
1
1
2847261428
[746,1288,405,431]
CMNC
French Guiana
Riviere Lunier
32
333
2
1
1
2847261415
1997-03
CEMT
French Guiana
-4.0833335
Nouragues
1307
-52.666668
32
333
4
4
2847261465
[824,1432,441,467]
2003-10
CEMT
French Guiana
Paracou
32
333
4
2
2
2847261358
[151,1155,476,503]
1998-12
CEMT
French Guiana
-4.0833335
Barrage de Petit Saut
1307
-53.066666
Sain Eugene
32
333
4
2
2
2847261437
2014-05
CEMT
French Guiana
-3.9
Saint Georges
1307
-51.8
32
333
1
1
2847261496
1999-06-25
FIT
Z. Falin
Suriname
440
4.9486113
Brownsberg Natuurpark
21
-55.18139
32
333
FIT121
1
Brokopondo
2847261545
[1290,1432,549,575]
CMNC
Suriname
32
333
1
1
2847261477
1999-07-02
CMNC
Z. Falin
Suriname
50
5.271389
Redi Doli
21
-54.920834
Akintosoel
32
333
1
1
Commewijne
2847261362
1999-07-03
CMNC
Suriname
50
5.271389
Redi Doli
21
-54.920834
Akintosoel
32
333
1
1
2847261509
1949-03-05
CMNC
R.D. Cave
Suriname
4.8
Nassau Mountains
1306
-54.6
32
333
1
1
Marowijne
2847261522
1999-07-08
CMNC
Z. Falin
Suriname
160
3.3488889
Palumeu
21
-55.438335
32
333
2
1
1
2847261528
1999-07-09
CMNC
Z. Falin
Suriname
160
3.3488889
Palumeu
21
-55.438335
32
333
4
1
3
2847261500
1999-06-20
CMNC
Z. Falin
Suriname
30
5.3916664
11 km SE Zanderij Airport
21
-55.158337
32
333
1
1
Para