Scybalocanthon darlingtoni ( Paulian, 1939 ),

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: 320-321

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/9D12E557-3A4A-FF8A-95F1-FAD1FD69C5C1

treatment provided by

Felipe

scientific name

Scybalocanthon darlingtoni ( Paulian, 1939 )
status

 

Scybalocanthon darlingtoni ( Paulian, 1939) 

( Figs. 1HView FIGURE 1, 4HView FIGURE 4, 5GView FIGURE 5, 6AView FIGURE 6)

Canthon darlingtoni Paulian, 1939: 141  , figs. 1–2, 7 (original description); Blackwelder 1944: 199 (checklist); Gacharná 1951: 221 (catalog); Krajcik 2006: 26 (catalog); Krajcik 2012: 63 (catalog).

Scybalocanthon darlingtoni: Martínez 1953: 72  (taxonomic remarks); Pereira & Martínez 1956: 114, 116 (catalog and identification key); Vulcano & Pereira 1964: 637 (catalog); Vulcano & Pereira 1967: 554 (distribution, identification key); Halffter & Martínez 1977: 67 (species list).

Diagnosis. Specimens of S. darlingtoni  are readily distinguishable from all other species by the pronotum, femora, and elytra bicolored, with irregular black and yellow spots on the dorsal body surface ( Fig. 1HView FIGURE 1); aedeagus with parameres elongate, subrectangular, not excavated ventrally ( Fig. 4HView FIGURE 4); and endophallus lacking bristles or microbristles close to the FLP sclerite ( Fig. 5GView FIGURE 5).

Description. Body. Oval, lateral edges rounded. Surface completely microgranulate. Color. Body with yellow and black spots on the dorsal and ventral surface, and metallic sheen. Head, parts of pronotum and elytra, internal portion of hypomera, prosternum, mesoventrite, mesoepisternae, metaepisternae, parts of metaventrite, central portion of abdominal ventrites and pygidium, profemora (except the middle of the anterior portion), protibiae, proximal and distal portions of mesofemora and metafemora, and mesotibiae and metatibiae black. Other parts of the pronotum and elytra, lateral portion of hypomera, parts of metaventrite, lateral portion of abdominal ventrites and pygidium, middle of profemora, mesofemora, and metafemora yellow. Length. 6.5–6.8 mm. Thorax. Pronotum with two irregular and complex black spots, fused at their central portions; one anterior spot subtrapezoidal shaped with two lateral projections and four posterior projections; one posterior spot quadrate in shape with two anterior projections. Anterior angles of pronotum acute (approximately 80°). Lateral margin irregularly curved outward, forming an obtuse angle at the middle portion. Elytra. Surface with alternating bands of black and yellow spots. Striae thin and weakly impressed, inconspicuous. Eighth stria lacking carina at the anterior portion. Aedeagus. Parameres slightly asymmetrical, with subrectangular shape, truncate apically ( Fig. 4HView FIGURE 4). Dorsal margin of parameres slightly curved inward at the basal portion; from the medial to apical portions substraight. Ventral margin of parameres substraight, with a short denticle at the basal portion. SRP circular, with substraight handle-shaped extension ( Fig. 5GView FIGURE 5). FLP Ishaped ( Fig. 5GView FIGURE 5). A+SA with two superposed and elongate sclerites ( Fig. 5GView FIGURE 5). AS I-shaped ( Fig. 5GView FIGURE 5).

Type material. Canthon darlingtoni Paulian  , lectotype ♂ (here designated; MNHN): “Sta Marta / Colombia / Darlington” // “coTYPE” // “ Canthon  / Darlingtoni / n. sp. ” // “ PARATYPE ” // “ PARALECTOTIPO, SCYBA- LOCANTHON. DARLINGTONI, PAULIAN, G. H. y A. M. DET. 76” // “ LECTOTYPE ♂ / Canthon  / darlingtoni  / Paulian / des. F. Z. Vaz-de-Mello ”  .

Non-type material [ 9 males, 4 females]: COLOMBIA  : MAGDALENA, Sierra. Nueva Grande, Sierra Nevada de Santa Marta, 1609 m, 9–27.iv.1975, J.A. Kochalka, pitfall trap— 5♂ 2♀ ( CMNC); same locality but Cerro Kennedy, V. da Minas (73°43’12’’W, 10° 52’00’’N), 2.i.1999, 1670 m, J.A. Noriega— 1♂ 2♀ ( CEMT);GoogleMaps  Sierra San Lorenzo (Ujhelyi), [anonymous]— 1♂ ( CEMT). Campana [= El Campano], 24 km S Santa Marta, 914 m (11°6’N, 74°5’W), 14.v.1973, Campbell & Howden— 1♂ ( CMNC);GoogleMaps  Río Frio (10°55’N, 74°10’W), [no date], Darlington— 1♂ ( CMNC)GoogleMaps  .

Distribution. Known from Colombia ( Fig. 6AView FIGURE 6). Endemism areas: Brazilian sub-region: Pacific dominion:

Guajira 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 darlingtoni ( Paulian, 1939 )

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

Canthon darlingtoni

Krajcik, M. 2012: 63
Krajcik, M. 2006: 26
Gacharna, G. C. 1951: 221
Blackwelder, R. 1944: 199
Paulian, R. 1939: 141
Loc

Scybalocanthon darlingtoni: Martínez 1953: 72

Halffter, G. & Martinez, A. 1977: 67
Vulcano, M. A. & Pereira, F. S. 1967: 554
Vulcano, M. A. & Pereira, F. S. 1964: 637
Pereira, F. S. & Martinez, A. 1956: 114
Martinez, A. 1953: 72