Renda boiuna Klemann-Junior, Barroso & Márquez, 2025

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

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( Figs. 3A–E View FIGURE 3 , 4A–G View FIGURE 4 )

Type material ( 4♂; 1♀).

Holotype: BRAZIL: ♂, labeled: “ Brasil : AM, Itapiranga | Faz. Caribi-T2/A1 | 28. iv-01. v.2022 | 2°32’5 0,48’’S/ 58°48’23,16’’W | L. Klemann-Junior | CESIT-UEA ” ( INPA), “ HOLOTYPE | Renda | boiuna sp. nov. | Desig. Klemann-Junior et al. 2025” . Paratypes ( 3♂, 1♀), labeled: “ Brasil: AM, Silves | Faz. Gut, Int. voo 6 | 29.v- 05.vi.2022 | 2°50’7,72’’S / 58°36’19,37’’W | L. Klemann-Junior, J. R.C. R., J.L. F. | CESIT-UEA ” ( 1 ♂ UEA); “ Brasil: AM, Silves | Faz. Gut, Int. voo 8 | 29.v-05.vi.2022 | 2°50’7,72’’S / 58°36’19,37’’W | L. Klemann-Junior, J. R.C. R., J.L. F. | CESIT-UEA ” ( 1♀ UEA); “ Brasil: AM, Silves | Faz. Gut, Int. voo 31 | 28.v-04.vi.2022 | 2°50’7,72’’S / 58°36 ’19,37’’W | L. Klemann-Junior, J. R.C. R., J.L. F. | CESIT-UEA ” ( 1 ♂ CEMT); “BRASIL: Amazonas | EST. AM 010 KM 31 | CEPLAC. 18-19-8-77 | L.P. ALBUQUERQUE” ( 1 ♂ INPA). All paratypes with label “ PARATYPE [yellow label] | Renda | boiuna sp. nov. | Desig. Klemann-Junior et al. 2025” GoogleMaps .

Diagnosis. Among species of the “minor ” species group (characterized by fine, moderately dense punctures on pronotum, except for wide longitudinal impunctate area; body mainly black; and apical maxillary palpomere conical) ( Márquez, 2010), R. boiuna sp. nov. is similar to R. mesoamericana in the reddish-brown coloration of the genital segment and posterior border of pregenital segment of abdomen; head with temple flattened; and aedeagus large, oval elongate. However, R. boiuna can be differentiated from R. mesoamericana by the shape of the head; by the size and distribution of the punctures on the ventral surface of the head; and by the aedeagus. In R. boiuna the head has parallel lateral margins, behind the eye line, and the posterior border is straight, giving the head a square shape. In R. mesoamericana the lateral margins of the head smoothly converge posteriorly and the posterior border is slightly rounded, giving the head a square oval shape. In R. boiuna umbilicate punctures on the ventral surface of the head are larger than on the lateral and dorsal surfaces (same size in R. mesoamericana ); ventral surface of head with umbilicate punctures not evenly distributed in R. boiuna (umbilicate punctures evenly distributed in R. mesoamericana ). The median lobe of the aedeagus of R. boiuna has a narrow and well-marked neck just below the insertion of the parameres, this neck is absent in R. mesoamericana . The aedeagus of R. boiuna has the left paramere smaller than the right paramere, while in R. mesoamericana the right paramere is smaller than the left paramere.

Description. Holotype male, BL: 11.52–13.04 mm, FL: 6.31–6.83 mm.

Coloration: Head black, with anterior border reddish brown; pronotum and elytra black; abdominal segments 3–7 black; abdominal segment 8 dark reddish brown to black, with posterior border reddish brown; abdominal segments 9 reddish brown; antennomere 1 dark reddish brown to black, with anterior and posterior borders reddish brown; antennomere 2 with posterior half reddish brown and anterior half dark reddish brown to black; antennomere 3 dark reddish brown to black; antennomeres 4–7 dark reddish brown to black, with posterior half lighter; antennomeres 8–10 dark reddish brown to black; antennomere 11 with posterior half dark reddish brown to black and anterior half light reddish brown; mandibles black; labial and maxillary palps reddish brown; legs reddish brown to dark reddish brown (almost black), with tarsomeres reddish brown.

Head ( Figs. 3B, 3C View FIGURE 3 , 4B View FIGURE 4 ) square shaped; parallel lateral margins behind eyes; posterior border straight; longer (HL: 1.80–2.00 mm) than wide (HW: 1.50–1.69 mm); not posteriorly narrowed; dorsal and ventral surfaces slightly convex. Dorsal surface of head ( Fig. 3B View FIGURE 3 ) with dense umbilicated punctures, extending to near anterior border; punctures less dense anteriorly. Ventral surface ( Fig. 3C View FIGURE 3 ) with moderate dense umbilicated punctures (3 punctures in 0.3 mm); largest punctures near center of head ( 0.07 mm), becoming smaller towards lateral margins and posterior border ( 0.03 mm); punctures not evenly distributed; each puncture with long seta, brown at base and yellow at tip; interstices between punctures 0.25 to 0.75x the diameter of largest punctures; shiny. Temple flattened, flat area with dense umbilicate punctures ( Fig. 4B View FIGURE 4 ). Eyes ( Fig. 3B View FIGURE 3 ) 0.26–0.28x head length (OL: 0.49–0.52 mm, OW: 0.24–0.27 mm), interocular distance 0.65–0.69x head width (IO: 1.02–1.11 mm). Antennomere 1 with 1.7x 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 slightly longer than wide, 0.9x the length of antennomeres 9–10 combined; antennomeres 1–11 ( Fig. 4A View FIGURE 4 ) 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 conical, 0.95x the length of preapical palpomere. Apical labial palpomere widened toward apex, 1.25x as long as preapical palpomere.

Pronotum ( Fig. 3D View FIGURE 3 ) 1.46–1.54x longer (PL: 2.31–2.50 mm) than wide (PW: 1.61–1.75 mm); wider in the middle; 1.01–1.09x 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 punctures, midline with wide longitudinal impunctate area; each puncture with long seta, brown at base and yellow at tip; interstices between punctures less than 1x the diameter of punctures; shiny. Posterior half of pronotum with poorly developed depressed area on each side.

Elytra ( Fig. 3E View FIGURE 3 ) as long as wide (EL: 2.30–2.50 mm, EW: 2.31–2.52 mm); as long as pronotum. Elytra with small, dense umbilicated punctures; interstices between punctures 0.1 to 1.2x the diameter of punctures; each puncture with long brown seta, some setae with yellow tip; shiny.

Legs ( Fig. 3A View FIGURE 3 ) shiny; femur with long setae, brown at base and yellow at tip; tibia with long, yellow setae on dorsal surface and brown on ventral surface, denser than femur; tarsi with long, light brown setae, less dense than in tibia; tibia with spines on outer margin and on apical border. Prolegs shorter than meso- and metalegs; tarsi with slight lateral expansion.

Abdomen ( Fig. 3A View FIGURE 3 ) shiny; less wide than 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. 4D–G View FIGURE 4 ) ovally elongated, with widened base of median lobe; total length 3.12–3.39 mm. Parameres 0.33x length of median lobe. Apical area of median lobe 0.24x as long as total length of median lobe; internal sac with sclerotized structures. Median lobe with narrow and well-marked neck just below insertion of parameres; left paramere smaller than right paramere.

Female similar in color and measurements to males.

Habitat. Four specimens 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 of these specimens belongs to the company Precious Woods—Mil Madeiras Preciosas and are destined for selective logging. The vegetation in the area is Evergreen Tropical Forest “Floresta Ombrófila Densa de Terras Baixas” ( Veloso et al. 1991). One specimen without information about the collection method, the environment is the same as mentioned above.

Distribution. R. boiuna sp. nov. is known from the municipalities of Itapiranga, Manaus, and Silves, Amazonas state, Brazil.

Etymology. The specific epithet refers to a creature from the Amazonian indigenous legend Boiúna. The Boiúna is a gigantic snake that lives at the bottom of the rivers, lakes, and streams of the Amazon. According to legend, this dark-colored snake has a body so shiny that it is capable of reflecting moonlight. The specific epithet name is a noun in apposition.