Cleidella picea,

Roza, André Silva & Mermudes, José Ricardo Miras, 2020, A new genus of railroad-worm beetles from the Atlantic Rainforest from Brazil (Coleoptera: Phengodidae, Mastinocerinae), Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 60 (10), pp. 1-12: 9-10

publication ID

http://doi.org/ 10.11606/1807-0205/2020.60.special-issue.10

publication LSID

lsid:zoobank.org:pub:04F6D8C6-82AE-4987-A217-02DE972CE3DB

persistent identifier

http://treatment.plazi.org/id/03E37046-0B15-FF99-FEA1-FCFA2178F8AC

treatment provided by

Carolina

scientific name

Cleidella picea
status

sp. nov.

Cleidella picea  sp. nov.

( Figs. 1-5View Figure 1View Figure 2View Figure 3View Figure 4View Figure 5)

Type material: HOLOTYPE (♂, DZRJ): BRAZIL. Rio de Janeiro: Teresópolis. Parque Nacional da Serra dos Órgãos. PVE Pt. 12A, 22°27′18,2″S, 43°00′58,9″W, 1,812 m, IX.2015, R. Monteiro col.GoogleMaps  PARATYPES: Rio de Janeiro: Teresópolis. Parque Nacional da Serra dos Órgãos. PVE Pt. 9A, 22°26′55,1″S, 43°00′16,4″W, 1,246 m, II.2015 (1 ♂, DZRJ)GoogleMaps  ; PVE Pt. 9B, 22°26′57.8″S, 43°0′13.7″W, 1,236 m, II.2015, R. Monteiro col. (2 ♂, DZRJ)GoogleMaps  .

Diagnosis: Eyes occupying nearly half of head width, in lateral view, posterior margin vertical, slightly reniform ( Fig. 1CView Figure 1). Pronotum 1.1× wider than long, anterior margin curved, posterior margin slightly curved ( Fig. 1EView Figure 1). Body overall dark brown, with head and pronotum from black to dark brown, and mandibles, palpi and internal margin of pro- and mesocoxae and femora brown to light brown ( Figs. 1View Figure 1 A-B).

Description, male

Measurements (n = 4): Total length: 4.2-4.7 mm (aver. 4.4 mm). Head length: 0.57-0.65 mm (aver. 0.6 mm). Head width: 0.74-0.76 mm (aver. 0.75 mm). Pronotum length: 0.62-0.65 mm (aver. 0.64 mm). Pronotum maximum width: 0.71-0.76 (aver. 0.73 mm). Elytron length: 1.80-1.85 mm (aver. 1.82 mm). Elytron maximum width: 0.52-0.57 mm (aver. 0.54 mm).

Morphology: Head wider than long, integument glossy, finely punctate, interocular distance occupying slightly more than half of head width in dorsal view ( Fig. 1EView Figure 1); eyes occupying nearly half of head width, in lateral view, posterior margin vertical, slightly reniform ( Fig. 1CView Figure 1); antennomere IV 2× longer than III, progressively longer from IV to X, XI cylindrical, 1.5× longer than X; IV-X each with two long, symmetrical branches, 2 to 8× longer than antennomere ( Fig. 1DView Figure 1). Pronotum 1.1× wider than long, integument glossy, finely punctate, anterior margin curved, lateral margins convergent in anterior half, dorsally parallel in posterior half, posterior margin slightly curved ( Fig. 1FView Figure 1). Elytron heavily setigerous punctate, 3.1-3.5× longer than wide ( Fig. 4AView Figure 4), reaching anterior margin of forth abdominal segment ( Fig. 1BView Figure 1). Tergite IX transversal, twice wider than long in the middle line; tergite X slightly longer than wide ( Fig. 5AView Figure 5); sternite IX twice longer than wide when including membranous area, inner curved in the posterior margin ( Fig. 5BView Figure 5). Aedeagus: basal piece entirely sclerotized, ribbon-like; median lobe cylindrical, strongly curved at base, rounded and constricted apically, with many tiny glandular openings; flagellum encircled around median lobe at rest; about 1.5× longer than median lobe length; parameres parallel, symmetrical, narrowing slightly past the middle towards the apex, which is unciform, toothed inward, with short and scarce bristles separated by a distance at least twice the seta length ( Figs. 5View Figure 5 C-H).

Coloration: Body overall dark brown, with head and pronotum from black to dark brown, and mandibles, palpi and internal margin of pro and mesocoxae and femora brown to light brown.

Females and immatures: Unknown.

Etymology: The specific name is a Latin adjective for “pitch-black” and refers to the dark overall color of the specimens’ integument.

Biology and distribution: Cleidella picea  sp. nov. occurs on the Spring and Summer of the southern hemisphere. It inhabits altitudinal areas of the Serra dos Órgãos,in the Serra do Mar mountain range, around 1,250 -1,800 m, in a vegetation type of montane and high-montane forest.

Remarks: This species can be easily distinguished from Cleidella silveirai  sp. nov. by the eyes, in lateral view, with posterior margin vertical, slightly reniform (strongly obliquely projected in P. silveirai  sp. nov.); pronotum slightly wider than long (distinctly wider than long in P.silveirai  sp. nov.); and the body overall dark brown, with head and pronotum from black to dark brown, and mandibles, palpi and internal margin of pro and mesocoxae and femora brown to light brown (body overall light brown, head brown, palpi, thoracic sterna, legs, tergites and sternites pale yellow in P. silveirai  sp. nov.).

R

Departamento de Geologia, Universidad de Chile