Scybalocanthon nigriceps ( Harold, 1868 )

Silva, Fernando A. B. & Valois, Marcely, 2019, A taxonomic revision of the genus Scybalocanthon Martínez, 1948 (Coleoptera Scarabaeidae: Scarabaeinae: Deltochilini), Zootaxa 4629 (3), pp. 301-341: 329

publication ID

https://doi.org/10.11646/zootaxa.4629.3.1

publication LSID

lsid:zoobank.org:pub:1D47B452-0A40-4BC5-9BBA-C06DEB298C9A

persistent identifier

http://treatment.plazi.org/id/9D12E557-3A45-FF82-95F1-F95BFD28C2B9

treatment provided by

Felipe

scientific name

Scybalocanthon nigriceps ( Harold, 1868 )
status

 

Scybalocanthon nigriceps ( Harold, 1868) 

( Figs. 1SView FIGURE 1, 3FView FIGURE 3, 4QView FIGURE 4, 5PView FIGURE 5, 6FView FIGURE 6)

Canthon nigriceps Harold, 1868: 12  , 49 (identification key and description); Harold 1869: 992 (catalog); Heyne-Taschenberg 1908: 61 (description); Gillet 1911: 31 (catalog); Schmidt 1922: 65, 78 (diagnosis); Balthasar 1939: 193 (redescription); Pêssoa & Lane 1941: 416, 419 (catalog and remarks); Blackwelder 1944: 200 (checklist); Krajcik 2006: 29 (catalog); Krajcik 2012: 64 (catalog).

Scybalocanthon nigriceps: Pereira & Martínez 1956: 115  , 119 (catalog and identification key); Vulcano & Pereira 1964: 638 (catalog); Vulcano & Pereira 1967: 555 (distribution, identification key); Halffter & Martínez 1977: 67 (species list); Vazde-Mello 2000: 194 (checklist); Vaz-de-Mello & Silva 2017: 144–145 View Cited Treatment (identification key and lectotype designation).

Diagnosis. Specimens of S. nigriceps  are readily distinguishable from all other species by the body surface opaque; elytra bicolored, most of elytral surface yellow, black coloration restrict to elytral edge ( Fig. 1SView FIGURE 1); femora with black spots on the basal and apical third, central portion with elliptical yellow spot ( Fig. 3FView FIGURE 3); parameres of aedeagus arrow shaped, with an excavation ventrally ( Fig. 4QView FIGURE 4); and endophallus with additional sclerite ( AS) absent ( Fig. 5PView FIGURE 5).

Description. Body. Oval-elongate. Surface completely microgranulate. Color. Body opaque. Pronotum, hypomera, metaepisternae, metaventrite, most of elytra, abdominal ventrites, pygidium, coxae, and the middle of femora yellow or brown. Head, margin of elytra, prosternum, mesoventrite, mesoepisternae, trochanters, proximal and distal portions of femora, and tibiae dark brown or black. Length. 8.5–10.5 mm. Thorax. Anterior angles of pronotum approximately 90°. Lateral margin strongly curved outward. Elytra. Striae thin, punctures conspicuous. Eighth stria effaced at the basal third, with a thin carina at the anterior portion. Aedeagus. Parameres slightly asymmetrical ( Fig. 4QView FIGURE 4). Dorsal margin of right paramere curved inward from the basal to medial portions, apical portion curved outward. Ventral margin of right paramere with a rounded excavation at the basal portion, from the medial to apical portions substraight. Dorsal margin of left paramere curved inward from the basal to medial portions, apical portion with an inconspicuous pointed projection. Ventral margin of left paramere curved inward at the basal portion, and substraight from the medial to apical portions. SRP circular, with curved handle-shaped extension ( Fig. 5PView FIGURE 5). FLP short, comma-shaped, with microbristles right beside it ( Fig. 5PView FIGURE 5). A+SA with two superposed and elongate sclerites ( Fig. 5PView FIGURE 5).

Type material. Canthon nigriceps Harold  , lectotype ♂ ( MNHN). See Vaz-de-Mello & Silva (2017)  .

Non-type material [ 52 males, 36 females, 10 unsexed specimens]. ARGENTINA: MISIONES, Urugua, Reserva Fundación Vida Silvestre Argentina , 5.ii.2014, G. Zurita, A. Gomez, V. Gimenez— 1♂ 1♀ ( CEMT)  . BRA- ZIL: PARANÁ: Altamira do Paraná, Estrada d’Água da Bola (52°42’ W, 24°52’S), 21.i.2011, G. Weiss & P. Grossi— 1 [unsexed specimen] ( CEMT)GoogleMaps  ; Londrina, Mata Godoy (23°27’ S, 51°15’W), 17.i.1985, J. Lopes— 3♂ 1♀ ( CMNC)GoogleMaps  ; same locality, 28–31.i.1990, S.A. Marshall— 7♂ 5♀ ( CMNC)GoogleMaps  ; Ponta Grossa (25°6’3’’ S, 50°9’54’’W), 17.i.1939, Ca- margo— 1♂ ( CMNC)GoogleMaps  ; Londrina , xii.1998, I.M. Medri—1 [unsexed specimen] ( CEMT)  ; Cornélio Procópio, Parque Estadual Mata São Francisco (50°34’20” W, 23°09’20”S), 19.ix.2009, N. Cipola— 2♂ ( CEMT)GoogleMaps  ; RIO DE JANEIRO: Itatiaia , 7.xi.1991, J.R. Celso— 1♂ ( CEMT)  ; Itatiaia (44°37’19,6” W, 22°25’57,6”S), xii.2011, pitfall, R Andrade, C Araujo—1 [unsexed specimen] ( CEMT)GoogleMaps  ; Nova Friburgo , xi.1991, [anonymous]—1 [unsexed specimen] ( CEMT)  ; SÃO PAULO: Serra do Japi, Atlantic rainforest (46°56’ W, 23°14’S), 1998, 1050 m, M.I.M Hernández— 28♂ 20♀ ( CEMT)GoogleMaps  ; Campinas , ii.1998, [anonymous]—4 [unsexed specimens] ( CEMT)  ; São Paulo (23°32’ S, 46°37’W), xii.1945, Guérin— 1♀ ( CMNC)GoogleMaps  . PARAGUAY: CAAZAPÁ, Caazapá (26°11’46’’ S, 56°22’4’’W), 15–30.i.1991, G. Arriagada— 3♂ 4♀ ( CMNC)GoogleMaps  ; Estero Cristal , xii.1999, [anonymous]—2 [unsexed specimens] ( CEMT)  ; Estancia Condesa / Toro Blanco, San Rafael Reserve , 110 m (26°19’11’’ S, 55°39’57’’W), 8–10.xii.2000, Z.H. Falin, flight interception trap— 1♀ ( CMNC)GoogleMaps  ; ITAPÚA, Yataí, San Rafael Reserve , 100 m (26°38’17’’ S, 55°39’50’’W), 21– 25.ix.2000, Z.H. Falin, flight interception trap— 5♂ 2♀ ( CMNC)GoogleMaps  ; Yataí, San Rafael Reserve , 100 m (26°38’17’’ S, 55°39’50’’W), 26–30.ix.2000, Z.H. Falin, flight interception trap— 1♂ 1♀ ( CMNC)GoogleMaps  .

Distribution. Known from Argentina, Brazil (Paraná, Rio de Janeiro, and São Paulo), and Paraguay ( Fig. 6FView FIGURE 6). Endemism areas: Chacoan sub-region: Parana dominion: Atlantic and Parana Forest provinces; Chacoan dominion: Chacoan province (see Morrone 2014; fig. 12).

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Genus

Scybalocanthon

Loc

Scybalocanthon nigriceps ( Harold, 1868 )

Silva, Fernando A. B. & Valois, Marcely 2019
2019
Loc

Canthon nigriceps

Krajcik, M. 2012: 64
Krajcik, M. 2006: 29
Blackwelder, R. 1944: 200
Pessoa, S. B. & Lane, F. 1941: 416
Balthasar, V. 1939: 193
Schmidt, A. 1922: 65
Gillet, J. J. E. 1911: 31
Harold, E. von 1869: 992
Harold, E. von 1868: 12
Loc

Scybalocanthon nigriceps: Pereira & Martínez 1956: 115

Vaz-de-Mello, F. Z. & Silva, F. A. B. 2017: 144
Halffter, G. & Martinez, A. 1977: 67
Vulcano, M. A. & Pereira, F. S. 1967: 555
Vulcano, M. A. & Pereira, F. S. 1964: 638
Pereira, F. S. & Martinez, A. 1956: 115