Dichotomius (Luederwaldtinia) speciosus ( Waterhouse, 1891 ),

Maldaner, Maria E., Nunes, Rafael V. & Vaz-De-Mello, Fernando Z., 2015, Taxonomic revision of the Dichotomius speciosus (Waterhouse, 1891) species group (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 3986 (5), pp. 549-560: 552-553

publication ID

http://dx.doi.org/10.11646/zootaxa.3986.5.2

publication LSID

lsid:zoobank.org:pub:E348A984-7A2C-46D7-A2AD-2B0E89BF95AE

persistent identifier

http://treatment.plazi.org/id/03D987CF-547F-FFB3-7DBB-FC6BFCBDFEF6

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Plazi

scientific name

Dichotomius (Luederwaldtinia) speciosus ( Waterhouse, 1891 )
status

 

Dichotomius (Luederwaldtinia) speciosus ( Waterhouse, 1891) 

( Fig. 2View FIGURE 2)

Pinotus speciosus Waterhouse 1891: 362  (description); Felsche 1901: 145; Felsche 1910: 342; Gillet 1911: 63; Blackwelder 1944: 208 (citations);

Pinotus (Selenocopris) speciosus Luederwaldt 1929: 105  ;

Pinotus (Selenocopris) opalescens Luederwaldt, 1929: 106  (misidentification);

Dichotomius (Luederwaldtinia) speciosus Pereira 1953: 293  –298 (redescription); Vaz-de-Mello 2000: 193; Nunes & Vaz-de- Mello 2013: 417 (citations);

Dichotomius (Luederwaldtinia) opalescens Pereira 1953: 298  (misidentification);

Specimens studied. Type: Holotype: Copris speciosa  . mihi Waterh. L. in Brasilia Lacordaire (handwritten green label) / Type (round red bordered label)/ 367 / 6745 [ NHML].

Non-type material. BRASIL: Minas Gerais: Aiuruoca. 1700m. X. 1993. A. Machado [8 ♂ 6 ♀ CEMT]; Rio de Janeiro: Itatiaia. III. 1995. C. Godinho Jr. [2 ♂ ♀ CEMT]; ♀ same data but XII. 1991 [ CEMT]; São Paulo: Campos do Jordão. hum. faec. 26.XII. 1998. Lincoln P. Almeida [7 ♂ 3 ♀ CEMT]; same locality but 06.II- 1999. E. A. Pereira [5 ♂, 5 ♀ CEMT]; same locality, 1780m. 23.XII. 1998. G. P. Almeida Neto [♂ ♀ CEMT]; same data but 1800m, XII. 2003 [3 ♂ 3 ♀ CEMT]; same data, but 1780m. 20.XII. 1998 [6 ♂ 2 ♀ CEMT]; same data, but I. 2004 [6 ♂ 22 ♀ CEMT]; same data, but X. 2002 [5 ♂ ♀ CEMT]; same locality but 16.XI. 1984 [1 ♂ 3 ♀ CEMT].

Diagnosis. Within its species group, D. speciosus  is separated by the following combination of characters: body surface green to red, always bearing red reflections ( Fig. 1–2View FIGURE 1View FIGURE 2, 6View FIGURE 6); male cephalic carina bearing one horn at each end ( Fig. 1View FIGURE 1 H); male pronotum strongly excavated bearing a central triangular lobed projection ( Fig. 2View FIGURE 2 A).

Remarks. Luederwaldt (1929) considered that males of P. speciosus  with a straight cephalic carina ( Fig. 1View FIGURE 1 E) should be classified as P. opalescens Felsche  , citing both species from same or nearby localities. This was followed by Pereira (1953), who argued that these species might be synonymous. There is a comprehensive redescription of this species in Pereira (1953), including descriptions of the male genitalia and mouth parts. Therefore, we consider that a new redescription is not necessary as the species is diagnosed and included in the key herein. One should consider that Dichotomius speciosus  may have a straight ( Fig. 1View FIGURE 1 E, 1 G) or an arcuate ( Fig. 1View FIGURE 1 D, 1 F) carina. The characteristics that Luederwaldt (1929) and Pereira (1953) used to recognize Dichotomius opalescens  must be considered as morphological variations of D. speciosus  . We based our diagnosis on the intraspecific variation because it occurs in males and females at all localities and without a specific association with color or any other morphological trait. Among our studied material, some individuals are almost entirely red or green, but they conserve other invariant characteristics of this species, including the form of the male paramera ( Fig. 2View FIGURE 2 C –D).

Distribution and conservation. Highlands of the Mantiqueira mountain range, around the triple border of the states of Minas Gerais, São Paulo, and Rio de Janeiro ( Fig. 7View FIGURE 7 B).

NHML

Natural History Museum, Tripoli

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Genus

Dichotomius

Loc

Dichotomius (Luederwaldtinia) speciosus ( Waterhouse, 1891 )

Maldaner, Maria E., Nunes, Rafael V. & Vaz-De-Mello, Fernando Z. 2015
2015
Loc

Dichotomius (Luederwaldtinia) speciosus

Pereira 1953: 293
1953
Loc

Dichotomius (Luederwaldtinia) opalescens

Pereira 1953: 298
1953
Loc

Pinotus (Selenocopris) speciosus

Luederwaldt 1929: 105
1929
Loc

Pinotus (Selenocopris) opalescens

Luederwaldt 1929: 106
1929
Loc

Pinotus speciosus

Blackwelder 1944: 208
Gillet 1911: 63
Felsche 1910: 342
Felsche 1901: 145
Waterhouse 1891: 362
1891