Canthidium (Neocanthidium) feeri, Carvalho De Santana & Pacheco & Vaz-De, 2019

Carvalho De Santana, Edrielly C., Pacheco, Thaynara L. & Vaz-De, Fernando Z., 2019, Taxonomic revision of the Canthidium Erichson, 1847 species of the gigas group (Coleoptera, Scarabaeidae, Scarabaeinae), European Journal of Taxonomy 530, pp. 1-24 : 11-13

Canthidium (Neocanthidium) feeri sp. nov.

urn:lsid:zoobank.org:act:EFF5685C-71C4-434D-9A9F-9431B46B0B36

Figs 1D , 6 , 9

Diagnosis

Canthidium feeri sp. nov. differs from other species of the group by the distinct anterior pronotal punctation, apparently lacking punctures on the centre of the disc.

Etymology

Named for François Feer, French scarabaeidologist, working at the Muséum national d’Histoire naturelle (Paris, France) who collected half of the type series.

Type material

Holotype FRENCH GUIANA • ♂; “GUYANE FRANÇAISE: St/ Laurent du Maroni, Bélvédère/ de Saul, 03°37 ′ 22 ″ S / 53°12 ′ 57 ″ W, 17.i.2011 ”; “22363”; CEMT.

Paratypes

FRENCH GUIANA • 1 ♂; same data as for holotype; CEMT • 1 ♂, 1 ♀; Cayenne , Nouragues Nature Reserve, primary forest, flight interception trap [“FIT”]; 4°5 ′ N, 52°41 ′ W; 28 Mar. 2002; F. Feer leg.; CEMT • 1 ♂; same location as for preceding; Apr. 2003; F. Feer leg.; CEMT • 1 ♂; Saül , Mt. Galbao; ex. flight int. trap; 3°37 ′ 18 ″ N 53°16 ′ 42 ″ N; 740 m a.s.l.; 5–7 Jun. 1997; J. Ashe and R. Brooks leg.; FG1AB97; #154; CMNC .

Type locality

Bélvédère de Saül, Saint-Laurent-du-Maroni, French Guiana, France.

Description (holotype)

MEASUREMENTS. Length: 9 mm.

HEAD. Surface dense and distinctly punctated. Frontoclypeal carina rectangular and with length less than three-fourths of interocular distance.

PRONOTUM. With anterior carina and lobes not evident, positioned just behind anterior border and separated from border by distance less than the border width; anterior region of disc punctated, posterior region with indefinite punctation.

HYPOMERON. Hypomeral carina complete.

METAVENTRITE. With simple and shallow punctation, laterobasal and lateral region with microsculpture finely strigulate.

MESEPIMERON AND MESEPISTERNUM. With shallow punctation and microsculpture finely strigulate.

HIND LEG. Metafemora with a carina along posterior edge, anterior edge with setal fringe, surface with fine punctation. Metatibiae elongated and gradually dilated towards the apex; external margin serrated.

AEDEAGUS. Parameres, in lateral view, dorsally with angulation on basal third.

Variation and sexual dimorphism

Total length ranging from 9.00 to 10.67 mm. Some males present a small tooth in the upper ventral part of their metatibiae and some have a protuberance on their basal half. Males with ventrite VI wider

medially, female ventrite VI with the same length throughout. Males also have protibial spur flattened, while in females the protibial spur is narrowed and pointed.

Geographical distribution

All the specimens examined for this work were collected in French Guiana, which is located in the Boreal Brazilian dominion.

Figures

Fig. 1. A. Canthidium gigas Balthasar, 1939, hypomerum with complete hypomeral carina. B. Canthidium kelleri (Martínez et al., 1964), hypomerum with incomplete hypomeral carina. C. Disc of pronotum completely punctated. D. Disc of pronotum with indefinite punctation. Not to scale.

Fig. 6. Canthidium feeri sp. nov., holotype (CEMT) A. Dorsal view. B. Lateral view of aedeagus. C. Dorsal view of aedeagus. Scale bars: 1 mm.

Fig. 9. Geographical distribution of Canthidium stofeli sp. nov. (circles) and Canthidium feeri sp. nov. (triangles)..