Dichotomius (Luederwaldtinia) sericeus ( Harold, 1867 )

Valois, Marcely C., Vaz-De-Mello, Fernando Z. & Silva, Fernando A. B., 2017, Taxonomic revision of the Dichotomius sericeus (Harold, 1867) species group (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 4277 (4), pp. 503-530: 508-511

publication ID

https://doi.org/10.11646/zootaxa.4277.4.3

publication LSID

lsid:zoobank.org:pub:7545001C-720C-41E4-99B5-39146C291D7B

persistent identifier

http://treatment.plazi.org/id/343487EE-2105-FFEC-FF08-FA7EFE0B28C7

treatment provided by

Plazi

scientific name

Dichotomius (Luederwaldtinia) sericeus ( Harold, 1867 )
status

 

Dichotomius (Luederwaldtinia) sericeus ( Harold, 1867) 

( Figs 2 View Figure a–h, 10a, 11a, e, h, 12a)

Pinotus sericeus Harold, 1867: 97  ; Felsche, 1901: 140 (identification key); Luederwaldt, 1929: 83 (diagnosis and identification key); Blackwelder, 1944: 208 (checklist).

Dichotomius sericeus  :Vaz-de-Mello, 2000: 193 (checklist).

Pinotus sericeus var. aterrimus Luederwaldt, 1929: 83  ; Blackwelder, 1944: 208 (checklist).

Dichotomius sericeus var. aterrimus  : Vaz-de-Mello, 2000: 193 (checklist).

Material examined. Type material, Pinotus sericeus Harold  , Lectotype ♂ (here designated; MNHN): 1. [old white label, bordered in red, handwritten, Harold's handwritting] Columb. Cay. P. sericeus Harold.  / 2. [white label, bordered in black, printed in black] Ex — Musaeo, E. Harold./ 3. [green label, small] Museum Paris, ex Coll., R. Oberthur/ 4. [red label, bordered and printed in black, handwritten] Lectotype ♂, Pinotus sericeus Har.  , des. F. Z. Vaz-de-Mello, 2014.

Paralectotype ♂ (MNHN):1. [old white label, small, handwritten) Columbia/ 2. [white label, bordered in black, printed in black] Ex — Musaeo, E. Harold/ 3. [green label, small] Museum Paris, ex Coll., R. Oberthur/ 4. [yellow label, bordered and printed in black, handwritten] Paralectotype ♂, Pinotus sericeus Har.  , des. F. Z. Vazde-Mello, 2014.

Paralectotype ♀ (MNHN): 1. [red label, small, handwritten] Columbia/ 2. [white label, bordered in black, printed in black] Ex — Musaeo, E. Harold/ 3. [green label, small] Museum Paris, ex Coll., R. Oberthur/ 4. [yellow label, bordered and printed in black, handwritten] Paralectotype ♀, Pinotus sericeus Har.  , des. F. Z. Vaz-de-Mello, 2014.

Pinotus var. aterrimus Luderwaldt  , Lectotype ♂ (here designated; MZSP): 1. [white, barely legible, printed] Petropolis, 4.I.99 / 2. [pink, printed, black bordered] COTIPO/ 3. [white, printed] 17862 / 4. [white, written in black, Luederwaldt's handwritting] Pinotus  ♂, sericeus  H., Lüd. dit. 22, var: Nach, iridiscend., forma a.. / 5. [white, written in blue, Luederwaldt's handwritting] P. sericeus  , var. aterrimus, Lüderw., Lüderw.  det. 34. / 6. [red label, bordered and printed in black, handwritten] Lectotype ♂, Pinotus sericeus Har.  , des. F. Z. Vaz-de-Mello, 2014.

Paralectotype ♂ (MZSP): 1. [white, barely legible, printed] Petropolis, 23.I.99 / 2. [pink, printed, black bordered] COTIPO /3. [white, printed] 17863 /4. [white, written in black, Luederwaldt's handwritting] Pinotus  ♂, sericeus  H., Lüd. dit. 22/ 5. [white, written in black, Luederwaldt's handwritting] P. sericeus Har.  , var. aterrimus, Luede., Lüd.  dit. 1934/ 6. [yellow label, bordered and printed in black, handwritten] Paralectotype ♂, Pinotus sericeus var. aterrimus  , des. F. Z. Vaz-de-Mello, 2014.

Paralectotype ♂ (MZSP): 1. [white, barely legible, printed] Petropolis, 10.229/ 2. [white, written in black, Luederwaldt's handwritting] Pinotus  ♂, sericeus  H., Lüd. dit. 22, var. Nach, iridiscend., forma a/ 3. [pink, printed, black bordered] COTIPO/ 4. [white, printed] 17863/ 5. [white, written in blue, black bordered, Luederwaldt's handwritting] P. sericeus  var., aterrimus Lüderw., Lüderw. det. 34/ 6. [yellow label, bordered and printed in black, handwritten] Paralectotype ♂, Pinotus sericeus var. aterrimus  , des. F. Z. Vaz-de-Mello, 2014.

Non-type material [359 males and 319 females]. BRAZIL: RIO DE JANEIRO: IV.2010, B. Araújo & F. Fernandez — 3♂ 4♀ ( CEMT)  ; Nova Friburgo , [42°34'10.5"W; 22°20'53.7"S], XII. 1995, Grossi & Vaz-de-Mello — 1♂ ( CEMT), Mury, [42°29'34.7"W; 22°19'13.4"S], I.1996, Greg & Guimarães — 1♀ ( CEMT)GoogleMaps  ; Floresta da Tijuca [43°17’10.3”W; 22°56’46”S], XII. 1985, C. Godinho — 1♂ 1♀ ( CEMT), Bom Retiro, II.2008, W. Beiroz — 3♂ 2♀ ( CEMT), Açude Solidão, IX.2008, W. Beiroz — 1♀ ( CEMT)GoogleMaps  , same data but II.2009 — 2 ♂ 2♀ ( CEMT), Morro do Alto , VI.2008, W. Beiroz — 2♂ ( CEMT), Centro de visitantes, II.2008, W. Beiroz — 1♂ ( CEMT)GoogleMaps  ; Restinga da Marambaia , (43°59'W; 23°03'S), IX.2008, W. Beiroz — 1♀ ( CEMT)GoogleMaps  , same data but II.2010 — 5 ♂ 3♀ ( CEMT)GoogleMaps  ; Cabo Frio , [41°57'06.7"W; 22°48'11.2"S], I.1990, E. Grossi — 1♂ ( CEMT)GoogleMaps  ; Jardim Botânico , [43°13'30.1"W; 22°58'02.3"S], XII.1992, F. Z. Vaz-de-Mello — 2 ♂ ( CEMT)GoogleMaps  , same data but XII.1991 — 1 ♀ ( CEMT)GoogleMaps  ; Copacabana , XI.1990, A. Bello — 1♂ ( CEMT)  ; Parque Lage , XII.1991, Martínez — 2♂ ( CEMT)  ; Guanabara, Represa Rio grande — Tático , (39° 58’43”W; 19°03’50”S), I.1968, Martínez — 1♂ ( CEMT)GoogleMaps  . ESPÍRITO SANTO: Conceição do Castelo , [41°14'25.8"W; 20°21'48.1"S], II. 1994, Grossi & Vaz-de-Mello — 2♂ 1♀ ( CEMT)GoogleMaps  . SÃO PAULO: Salesópolis , (46°20’36”W; 23°51’27”S), I.2006, M. Uehara — 1♂ 1♀ ( CEMT), Serra do Mar, Estação Biológica de Boracéia (50 km SE Mogi das cruzes), IV.1997, F.Génier & S. Ide — 6♂ 6♀ ( CMNAbout CMN), [São Carlos, 47°52'59.8"W; 22°00'10.1"S] close to Rio quilombo, X.2008, F. R. Fernandes — 1♂ ( CEMT)GoogleMaps  ; Mogi das cruzes, Parque das “nuvens” [Parque das Neblinas, 46°09'48"W; 23°44′53"S], III.2006, M. Uehara — 1♂ ( CEMT)GoogleMaps  ; Sete Barras, Parque Estadual Botelho , (47°55’51”W; 24°11’55”S), I.2012, E. Bovy — 10♂ 2♀ ( CEMT)GoogleMaps  ; São Miguel Arcanjo, Parque Estadual Botelho , (47°58’47”W; 24°03’32”S), IV.2012, Marion Boutefeu — 52♂ 43♀ ( CEMT)GoogleMaps  , same data but III.2012 — 15 ♂ 24♀ ( CEMT)GoogleMaps  , same data but V.2012 — 1 ♂ 5♀ ( CEMT)GoogleMaps  , same data but I.2012, E. Bovy — 9♂ 15♀ ( CEMT)GoogleMaps  , same data but III.2012 — 7 ♂ 6♀ ( CEMT)GoogleMaps  , same data but XI.2011 — 5 ♂ 11♀ ( CEMT)GoogleMaps  ; Caraguatatuba, Parque Estadual Serra do Mar ,(45°25’24”W; 23°35’30”S), I.2012, E. Bovy — 33♂ 26♀ ( CEMT)GoogleMaps  ; Picinguaba, Parque Estadual Serra do Mar , (44°59’02”W; 23°20’08”S), I.2012, E. Bovy — 91♂ 74♀ ( CEMT)GoogleMaps  ; Parque Estadual Intervales , (48°24’W; 24°18’S), III.2012, E. Bovy — 6♂ 9♀ ( CEMT)GoogleMaps  , same data but sede Ribeirão, (48°25’18”W; 24°16’35”S), 5♂ 7♀ ( CEMT)GoogleMaps  , same data but sede Carmo, (48°24’32”W; 24°18’33”S), 1♂ 1♀ — ( CEMT)GoogleMaps  . SANTA CATARINA: Anitápolis , [49°07'W; 27°54'S], I.2013, T.R.O Simões — 1♂ 3♀ ( CEMT)GoogleMaps  ; Antônio Carlos , (48°51'W; 27°25'S), XII.2012, J.A. Bogoni — 1♂ ( CEMT)GoogleMaps  ; Bombinhas , (48°; 27°S), X.2011, C. C. Oliveira — 1♂ ( CEMT)  ; Campos Novos , (51°12'W; 27°23'S), II.2011, R. C. Campos — 2♂ 1♀ ( CEMT)GoogleMaps  ; Florianópolis , (48°28'W; 27°32'S), II.2012, P.G. Silva — 3♂ 4♀ ( CEMT)GoogleMaps  , same data but (48°28'W; 27°39'S), III.2010, C. E. Cereto — 2♂ 3♀ ( CEMT)GoogleMaps  , same data but (48°28'W; 27°31'S), I.2013, P. G. Silva — 4♂ 6♀ ( CEMT), Lagoa do Peri, (48°32'W; 27°43'S), IX.2007, A. Martins & M. Hernandéz — 5♂ 6♀ ( CEMT)GoogleMaps  , same data but VII.2007, P. Condé & M. Hernandéz - 2♂ ( CEMT)GoogleMaps  , same data but IX.2007 - 1 ♂ 1♀ ( CEMT)GoogleMaps  , same data but VII.2007 — 2 ♀ ( CEMT), Praia Pântano do sul, (48°31'W; 27°47'S), IV.2009, Hernandez & Heusi — 1♂ ( CEMT), Unidade de Conservação Ambiental Desterro ( UCAD), I.2004, Carlos — 6♂ 9♀ ( CEMT)GoogleMaps  , same data but XII.2003 — 16 ♂ 18♀ ( CEMT)GoogleMaps  , same data but X.2003 — 1 ♂ 1♀ ( CEMT)GoogleMaps  , same data but III.2004 — 2 ♀ ( CEMT)GoogleMaps  , same data but VII.2004 — 1 ♂ 4♀ ( CEMT)GoogleMaps  , same data but XI.2003 — 3 ♂ 3♀ ( CEMT)GoogleMaps  , same data but X.2004 — 2 ♀ ( CEMT)GoogleMaps  ; same data but III.2003 — 2 ♂ ( CEMT)GoogleMaps  , same data but V.2004 — 10 ♂ 6♀ ( CEMT)GoogleMaps  ; Garuva, Estrada Bobita , (48°56'23"W; 26°07'36"S), III.2014, Nunes & Sawarls — 1♂ ( CEMT)GoogleMaps  ; Monte castelo, (50°19'W; 26°43'S), I.2013, A. L. Brandi — 3♂ 1♀ ( CEMT)GoogleMaps  , same data but (50°18'W; 26°40'S), XII.2012, A.L. Brandi — 2♂ 1♀ ( CEMT)GoogleMaps  ; Nova Veneza , (49°35'W; 28°33'S), III. 2012, J. A. Bogoni — 1♂ 1♀ ( CEMT)GoogleMaps  ; Pedro de Alcântara , (48°53'W; 27°37'S), XII.2012, J.A. Bogoni — 2♀ ( CEMT)GoogleMaps  ; Santo Amaro da Imperatriz , (48°48'W; 27°44'S), IX.2009, C. B. Marcon & M.I.M. Hernandéz — 4♂ 2♀ ( CEMT)GoogleMaps  . MINAS GERAIS: São Roque de Minas, Parque Nacional da Canastra , (46°25'11"W; 20°15'17"S), XI.2007, 1 ♀ ( CEMT)GoogleMaps  . PARANÁ: Altamira do Paraná, Estrada Porto da bota, (52°42'W; 24°52'S), III.2011, Grossi — 1♂ 2♀ ( CEMT)GoogleMaps  ; Balsa Nova, São Luiz de Purunã, Fazenda Monjolo , (49°70’W; 25°45’S), XII.2006 - I.2007, P. Lowenberg Neto — 3♂ 4♀ ( CEMT)  , same data but (49°70'W; 25°45'S), I.2007 — 3 ♂ 3♀ ( CEMT)  . RIO GRANDE DO SUL: Mato Castelhano [52°11'37.6"W; 28°16'46.2"S], Flona Passo fundo, III.2009, Moraes — 2♀ ( CEMT)GoogleMaps  ; Triunfo , [51°42'27.7"W; 29°55'46.4"S] COPESUL, IX.2001, MCNAbout MCN — 3♀ ( CEMT)GoogleMaps  . ARGENTINA: MISIONES: (54,06530; 26,02375), II.2014, G. A. Zurita, A. Gómez & V. Gimenez — 1♂ 2♀ ( CEMT), Dos de mayo, XII.2007, E. Abadie — 1♂ 1♀ ( CEMT)  ; P.N. Iguazu, send. Macuto , XII. 1980, S & J. Peck — 2♂ 1♀ ( CEMT)  , same data but XII.1990 — 1 ♂ 3♀ ( CEMT)  , same data but XII. 1991 — 3 ♂ 1♀ ( CEMT)  ; CHACO PROVINCE, [60°57'21.3"W; 26°01'36.8"S], XII. 1990, S. & J. Peck — 1♂ 1♀ ( CEMT)GoogleMaps  . PARAGUAY: MISIONES: [56°54′W; 27°24′S], X.1975, Martínez — 1♂ 1♀ ( CMNAbout CMN), Ayolas, X.1975, Martínez — 1♂ 1♀ ( CMNAbout CMN)GoogleMaps  ; ITAPÚA San Pedro [del Paraná], (26°31'24"; 55°48'18"), XI.2000, Z. H. Falin — 2♂ 2♀ ( CMNAbout CMN)  . CAAZAPA: Estero Cristal, 20. XI.1999 – 2 ♂ ( CEMT)  .

Diagnosis. Dichotomius sericeus  is similar to D. laevicollis  and D. iannuzziae  sp. nov. in having the pronotal disc covered by only sparse simple punctures, visible at high magnification ( Figs 2 View Figure d, 4d, 8d) and the pygidial disc with ocellate punctures restricted at the margins ( Fig. 11 View Figure h). However, it can be distinguished from those species by: male clypeal and genal discs with transversal ridges, lacking well-defined ocellate punctures ( Fig. 2 View Figure b); central portion of frons strongly depressed; pronotum lateral margins smooth on anterior half, lacking row of ocellate punctures ( Fig. 2 View Figure e); pronotum with ocellate punctures near posterior margin; posterior margins of meso- and metafemur with longitudinal sulcus on apical half; sulcus approximately as wide as one-eighth of femur ( Fig. 11 View Figure c).

Redescription: Length. 12–17 mm. Body black, with glossy bluish sheen on pronotum and elytral surfaces ( Fig. 2 View Figure a). Head: dorsal interocular surface with coarse ocellate punctures, denser near to the eyes ( Fig. 2 View Figure b). Pronotum: strongly convex in lateral view ( Fig. 11 View Figure a). Anterior and posterior margins with band of ocellate punctures, frequently forming a single row of punctures ( Fig. 2 View Figure d). Margination of posterior border with dense punctures near posterior angles. Hypomera: punctures of posterolateral portion slightly elliptical, setigerous and sparse, separated from each other by just under three times their diameter. Metasternum: anterior lobe densely punctate with ocellate punctures interspersed; ocellate punctures forming a row close to the inner margin of mesocoxae, some punctures setigerous. Lateral portion of metasternum with large, ocellate and setigerous punctures, separated from each other approximately by their diameter. Elytra: silky bluish sheen. Surface of interstriae slightly convex and punctate, punctures noticeable only at high magnification. Legs: ventral surface of profemur with ocellate and setigerous punctures along the midline. Posterior margin of profemur with a narrow longitudinal sulcus and well-defined microsculpture. Ventral surface of meso and metafemur with sparse setigerous punctures near the apex. Row of setae toward the body on ventral surface of mesotibia extending the entire length of the tibia ( Fig. 11 View Figure e). Abdomen: medial portion of abdominal sternites with a single row of small and ocellate punctures; lateral portions with dense, large and ocellate punctures on anterior half. Length of male medial portion of sixth sternite half that of the fifth. Pygidium: slightly wider than long. Aedeagus: parameres subtriangular, 2/3 as long as the phallobase ( Figs 2 View Figure f–h). [lateral view] — dorsal margin of parameres strongly curved outward on apical half ( Fig. 2 View Figure f). Ventral margin of parameres strongly curved inward on basal-third and slightly curved inward on apical two-thirds ( Fig. 2 View Figure f). [ventral view] — inner margins of parameres slightly curved outward ( Fig. 2 View Figure g). [dorsal view] — basal portion of parameres wider than apical portion ( Fig. 2 View Figure h). External margins of parameres expanded toward apex ( Fig. 2 View Figure h). Inner margins parallel ( Fig. 2 View Figure h). Endophallus: lamella copulatrix — Projection square-shaped; superior portion almost straight but narrowed medially; lateral portion straight ( Fig. 10 View Figure a). Secondary sexual characters: females differ from males as follows: clypeal teeth more acute ( Fig. 2 View Figure c); surface of clypeus with well-defined transversal ridges ( Fig. 2 View Figure c); medial portion of sixth sternite as long as the fifth.

Remarks. It is important to note that both the original description and several syntypes state “Columbia” [Colombia, South America] as the type-locality. However, it is clear by direct specimen comparison that those are mislabeled specimens. From the available data this species inhabits southern Atlantic rainforest in Brazil, Argentina and Paraguay.

CMN

Canadian Museum of Nature

MCN

McNeese State University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Genus

Dichotomius

Loc

Dichotomius (Luederwaldtinia) sericeus ( Harold, 1867 )

Valois, Marcely C., Vaz-De-Mello, Fernando Z. & Silva, Fernando A. B. 2017

2017
Loc

Pinotus sericeus var. aterrimus

Blackwelder 1944: 208Luederwaldt 1929: 83

1944
Loc

Pinotus sericeus Harold, 1867 : 97

Blackwelder 1944: 208
Luederwaldt 1929: 83
Felsche 1901: 140Harold 1867: 97

1901