Renda aneba Klemann-Junior, Barroso & Márquez, 2025

Klemann-Junior, Louri, Barroso, Paulo Ricardo Ramires & Márquez, Juan, 2025, New species and new records of Renda Blackwelder, 1952 (Coleoptera: Staphylinidae: Xantholinini) from Brazil, with an updated key to the species of the genus, Zootaxa 5693 (2), pp. 243-260 : 245-248

publication ID	https://doi.org/10.11646/zootaxa.5693.2.6
publication LSID	lsid:zoobank.org:pub:5D41F2C3-6B90-4090-9E2F-AF09B03E487A
DOI	https://doi.org/10.5281/zenodo.17322294
persistent identifier	https://treatment.plazi.org/id/391487F3-262A-255A-58BE-FB01FD35FE4D
treatment provided by	Plazi
scientific name	Renda aneba Klemann-Junior, Barroso & Márquez
status	sp. nov.

Treatment

Renda aneba Klemann-Junior, Barroso & Márquez , sp. nov.

https://zoobank.org/ urn:lsid:zoobank.org:act:

( Figs. 1A–E View FIGURE 1 , 2A–G View FIGURE 2 )

Type material ( 1♂).

Diagnosis. Among species of the “formicaria ” species group (characterized by dense to very dense umbilicate punctures on head and pronotum, body of large size and apical maxillary palpomere elongate or conically elongate) ( Márquez, 2010), R. aneba sp. nov. is similar to R. flagellicornis and R. grandipenis in the head not posteriorly narrowed, with inferior temporal carina, and ventral surface slightly convex, with dense umbilicate punctures separated by less than twice their width. However, R. aneba can be differentiated from R. flagelicornis and R. grandipenis by the proportions of antennomers, elytra to pronotum ratio, and proportions and shape of the aedeagus. In R. aneba antennomere 1 has 1.5x the length of the antennomeres 2–3 combined (antennomere 1 has nearly twice the length of the antennomeres 2–3 combined in R. flagelicornis ; and 2.06x as long as antennomeres 2–3 combined in R. grandipenis ) and antennomere 11 has the same size as the antennomeres 9–10 combined (antennomere 11 is 0.93x shorter than antennomeres 9–10 combined in R. flagelicornis ; and 1.06x longer than antennomeres 9–10 combined in R. grandipenis ). In R. aneba elytra are slightly shorter (0.94x) than pronotum (elytra are as long as the pronotum in R. flagelicornis ; and 1.08x as long as pronotum in R. grandipenis ). The elytra slightly shorter than pronotum is not a common character in Renda species, it is shared only by R. brachyptera in this species group. The total length of the aedeagus of R. aneba is 2.16 mm ( 3.55 mm in R. flagelicornis ; and 4.24 mm in R. grandipenis ). In R. aneba the aedeagus parameres are 0.83x the length of the median lobe (0.39x the length of the median lobe in R. flagelicornis ; and 0.29x in R. grandipenis ), making this character very distinctive of this new species, which has the longer parameres of all species of the group, even of all species of Renda .

Description. Holotype male, BL: 16.46 mm, FL: 8.04 mm.

Coloration: Head black, with anterior border dark reddish brown; pronotum and elytra black; abdominal segments 3–5 black; abdominal segments 6–7 black, with anterior and posterior borders dark reddish brown; abdominal segment 8 dark reddish brown, with posterior border reddish brown; abdominal segment 9 reddish brown; antennomeres 1–3 dark reddish brown (almost black), with anterior and posterior borders lighter; antennomeres 4– 10 reddish brown; antennomere 11 with posterior half reddish brown and anterior half yellowish; mandibles black; labial and maxillary palps light reddish brown; legs dark reddish brown (almost black), with tarsomeres reddish brown.

Head ( Figs. 1B, 1C View FIGURE 1 , 2B View FIGURE 2 ) oval; longer (HL: 2.43 mm) than wide (HW: 1.90 mm); not posteriorly narrowed; dorsal and ventral surfaces slightly convex. Dorsal surface of head ( Fig. 1B View FIGURE 1 ) with dense umbilicated punctures, extending to near anterior border. Ventral surface ( Fig. 1C View FIGURE 1 ) with dense umbilicated punctures (3 punctures in 0.3 mm); some areas without punctuation; largest punctures near center of head ( 0.13 mm), becoming smaller towards lateral margin and posterior border ( 0.05 mm); each puncture with long seta, brown at base and yellow at tip; interstices between punctures 0.15 to 0.25x the diameter of largest punctures; shiny. Temple with inferior temporal carina and slightly concave area ( Fig. 2B View FIGURE 2 ). Eyes ( Fig. 1B View FIGURE 1 ) 0.32x head length (OL: 0.78 mm, OW: 0.41 mm), interocular distance 0.57x head width (IO: 1.09 mm). Antennomere 1 with 1.5x the length of antennomeres 2–3 combined; antennomeres 1–3 longer than wide, club-shaped; antennomeres 4–10 wider than long, gradually becoming wider from 4 to 10; antennomere 11 longer than wide, same length as antennomeres 9–10 combined; antennomeres 1–11 ( Fig. 2A View FIGURE 2 ) with numerous brown/yellow macrosetae, macrosetae becoming smaller from antennomere 1 to 11; antennomeres 4–11 densely covered by yellow microtrichae. Labrum slightly bilobed; mandibles with external channel. Apical maxillary palpomere elongated, 1.94x length of pre-apical palpomere. Apical labial palpomere slightly widened toward apex, 2.45x as long as preapical palpomere.

Pronotum ( Fig. 1D View FIGURE 1 ) 1.62x longer (PL: 3.00 mm) than wide (PW: 1.82 mm); wider in the middle; 0.96x head width; anterolateral margins convergent in a convex curve; posterolateral margins convergent to posterior angles in a smooth concave curve; narrow and rounded anterior border; wide and rounded posterior border. Pronotum with dense umbilicated punctures, midline with narrow longitudinal impunctate area; each puncture with long seta, brown at base and yellow at tip; interstices between punctures less than 1/2 the diameter of punctures; shiny. Posterior half of pronotum without depressed areas.

Elytra ( Fig. 1E View FIGURE 1 ) 1.5x wider than pronotum; as long as wide (EL: 2.81 mm, EW: 2.81 mm); slightly shorter than pronotum (0.94x). Elytra with small, dense umbilicated punctures; interstices between punctures 0.5 to 2x the diameter of punctures; each puncture with long brown seta, some setae with yellow tip; shiny.

Legs ( Fig. 1A View FIGURE 1 ) shiny; femur with long setae, brown at base and yellow at tip; tibia with long, yellow setae, denser than femur; tarsi with long, yellow setae, as dense as tibia; tibia with spines on outer margin and on apical border. Prolegs shorter than meso- and metalegs; tarsi with slight lateral expansion.

Abdomen ( Fig. 1A View FIGURE 1 ) shiny; with segment 3 as wide as elytra; covered with dense long setae, brown at base and yellow at tip; setae denser than any other part of body. Apex of sternum 8 slightly concave.

Aedeagus ( Figs. 2D–G View FIGURE 2 ) ovally elongated, with widened base of median lobe; total length 2.16 mm. Parameres 0.83x length of median lobe. Apical area of median lobe 0.42x as long as total length of median lobe; internal sac with sclerotized structures.

Female unknown.

Habitat. Collected with Flight Intercept Trap, installed on the ground, and baited with fresh human and pig feces 1:9 ratio (see Moura et al. 2021 for details). The capture site belongs to the company Precious Woods—Mil Madeiras Preciosas and is destined for selective logging. The vegetation in the area is Evergreen Tropical Forest “Floresta Ombrófila Densa de Terras Baixas” ( Veloso et al. 1991).

Distribution. Renda aneba sp. nov. is known only from the type locality, from a collection point 2 km from the right bank of the Rio Anebá, in the municipality of Silves, Amazonas state, Brazil.

Etymology. The specific epithet refers to the name of the river (Rio Anebá) near the collection site of the holotype. Anebá is an indigenous word, from the Tupi language, which means “back”, “return” or “to return”. The specific epithet name is a noun in apposition.