Dasyrhopala tarsinivea Vilhena & Mermudes, 2025

Vilhena, Poliana De Mesquita & Mermudes, José Ricardo Miras, 2025, Review of Dasyrhopala Jordan, 1904 (Coleoptera: Anthribidae) with description of three new species from Brazil, Zootaxa 5632 (2), pp. 243-270 : 253-256

Dasyrhopala tarsinivea Vilhena & Mermudes sp. nov.

( Figs 28–36 , 75 )

http://zoobank.org/ urn:lsid:zoobank.org:act:BE9306E6-F6E3-46FA-A9CB-19009FE586B8

Type locality. Corupá (=Hansa Humboldt), Santa Catarina , Brazil .

Type material. Holotype, female from BRAZIL ( Figs 28–36 ) deposited at BMNH: Santa Catarina : (Hansa Humboldt), Reitter leg., Karl Jordan Coll., B.M. 1940-109; 2) Dasyrhopala n. sp. det. BDV’70 [= Barry Dean Valentine, 1970]; 3) handwritten in pencil (Fry [ex-coll.]. [18]75; H., 1.36). Paratype BRAZIL Santa Catarina , 1 male, without date, Dasyrhopala sp. n. det Robert Frieser (handwritten) ( MTDC).

Diagnosis. Antebasal carina ( Fig. 28 ) almost straight in middle, slightly curved on sides. Elytra ( Figs 28, 32 ) with raised basal gibbosity, covering interstriae 1–4, more pronounced on 3rd, extending with swelling on 3rd interstria. Circumscutellar margin somewhat swollen. Odd-numbered interstriae (3, 5, 7, and 9) elevated, more distinctly on 3rd and 5th. Femur ( Fig. 32 ) covered with moderately dense yellowish scales, protibiae ( Figs 28–29, 32 ) with dense suberect yellowish scales up to their proximal half, with dark brown scales on apical half. Tarsi covered with dense pale yellowish, somewhat elongate scales.

Measurements. Holotype, female ( Figs 28–36 ). Measurements (in mm): total body length—9.13; head: length of rostrum—0.84; maximum width of rostrum—1.56; length of eye—0.6, distance between inner margin of eyes at middle of frons—1.28; antenna: I—0.19, II—0.21, III—0.37, IV—0.3, V—0.25, VI—0.25, VII—0.15, VIII— 0.19, IX—0.20, X—0.21, XI—0.19; pronotum: maximum length—2.55; maximum width—2.29; elytra: maximum length—4.8, width in humeral part—3.26; pygidium: maximum length—1.13, maximum width—1.23.

Description. Female ( Figs 28–35 ). Integument dark brown to reddish, with yellowish distal tarsomeres 2–5, light brown antennae. Dorsal vestiture ( Fig. 28 ) with dark brown, yellowish, and pale yellow scales. Rostrum ( Fig. 31 ) covered with dark brown, light, and pale yellow scales without any spotted or striped pattern. Antennae ( Fig. 32 ) reddish at joints, with whitish fine bristles along joints, becoming denser on club. Pronotum covered with dark brown and yellowish scales, without longitudinal striped or spotted patterns. Elytra ( Fig. 28 ) with pale yellow scales forming small rounded spots along interstria 1, dark brown scales alternating with yellowish scales, forming conspicuous pattern of elongate spots on interstria 3; proximal third of elytra, humeri, epipleura, and apical third densely covered with yellowish scales without any spotted or striped pattern. Ventral ( Fig. 29 ) vestiture with dense pale yellow scales, covering the prosternum, mesosternum and metasternum, especially on sides, glabrous in median area; ventrites with pale yellow scales; ventrite V with longitudinal median stripe of sparse dark brown scales. Femur ( Fig. 32 ) with moderately dense yellowish scales, protibiae with dense suberect yellowish scales up to their proximal half, and dark brown scales on apical half. Tarsi ( Fig. 28 ) covered with dense, somewhat elongate pale yellow scales. Pygidium ( Fig. 30 ) covered with dense yellowish scales and sparse dark brown scales.

Rostrum ( Fig. 31 ) 1.8 times wider than long, with subparallel lateral margins, microcorrugate. Scrobe ( Fig. 32 ) foveiform; scape pyriform. Eyes ( Figs 31–32 ) lateral, subrounded, anteriorly indented. Prothorax ( Figs 28, 32 ) longer than wide, uniformly convex, rounded at sides, and very slightly wider near antebasal carina. Antebasal carina nearly straight in center, and slightly declined at sides. Prosternum ( Fig. 29 ) flat, longer than wide. Prosternal ( Fig. 29 ) process narrow at posterior margin, short, reaching half length of procoxae, width about 1/6 less than coxal cavities. Mesosternal ( Fig. 29 ) process narrower at posterior margin, not as narrow as prosternal process, with subrounded sides and apical margin. Mesosternum ( Fig. 29 ) longer than wide, depressed at anterior margin, punctate. Metasternum ( Fig. 29 ) longer than wide. Ventrite V ( Fig. 33 ) subtruncate at apex.

Female terminalia. Tergite VIII and sternite VIII ( Fig. 34 ) transverse, with subrounded sides and straight apical margin; apodeme of sternite VIII approximately as long as sternite VIII; sternite VIII at sides and middle slightly pigmented. Ovipositor ( Fig. 35 ) with lateral rods at least 3x longer than body. Median rods at least 1/3 longer than lateral rods. Dentate plates with two large teeth on apical margin. Spermatheca ( Fig. 36 ) reniform, with tapered apex and spermathecal gland rounded.

Etymology. The name " tarsinivea " refers to the tarsus of this species, which stands out for being the most hairy and whitish in color among all other species of the genus. The prefix "tarsi" is a direct reference to the tarsus in Latin, while "nivea" refers to the white coloration, also derived from Latin.

Distribution ( Fig. 75 ). Santa Catarina , Brazil.

Differential diagnosis. Dasyrhopala tarsinivea ( Figs 28–36 ) differs from all species of the genus by its nearly straight antebasal carina in the center, with a slight decline on the sides. It resembles Dasyrhopala tarsalis and Dasyrhopala trimellina by the dorsal vestiture, being more similar to the type species in terms of the uniform coloration of the rostrum and pronotum, lacking any stripe or spot pattern, and to D. trimellina in terms of the shape and coloration of the elytral spots. It differs from these species by presenting a more conspicuous pattern of elytral spots than D. tarsalis ( Figs 1–2 , 8 , 19, 23 ) and not exhibiting as conspicuous stripe pattern as D. trimellina ( Figs 37, 41 , 48–49 ), although it is very similar. In D. tarsalis , the pattern consists of pale yellow scales interspersed with dark brown spots along the elevated interstriae; whereas in D. trimellina , the pattern is a conspicuous mix of spots and yellowish stripes: the proximal third has dorsal spots and another on the epipleura, below the humeri; light stripes on the odd-numbered interstriae and very narrow dark brown spots or stripes, with an oblique stripe pattern in the middle from the epipleura and another narrow stripe running from the humeri to the apex of the basal gibbosity, formed by dark brown scales.

Figures

FIGURE 75. Distribution map of Dasyrhopala species endemic to the Atlantic Forest biome on the Brazilian east coast.

FIGURES 28–32. Dasyrhopala tarsinivea, holotype female from Corupá (Santa Catarina). 28, habitus in dorsal view; 29, habitus in ventral view; 30, pygidium in dorsal view; 31, head in dorsal view; 32, habitus in lateral view. Scale bars 28–29, 31–32: 1 mm; 30: 0.5 mm.

FIGURES 33–36. Dasyrhopala tarsinivea, holotype female from Corupá (Santa Catarina). 33, abdomen in ventral view; 34, tergite VIII and sternite VIII in ventral view; 35, ovipositor in dorsal view; 36, spermatheca in ventral view. Scale bars 33, 35: 1 mm; 34: 0.5 mm; 36: 0.1 mm.

FIGURES 1–2. Dasyrhopala tarsalis, syntype male (BMNH). 1, dorsal habitus; 2, lateral habitus.

FIGURES 8–12. Dasyrhopala tarsalis Jordan, male. 8, habitus in dorsal view; 9, habitus in ventral view; 10, pygidium in dorsal view; 11, head in dorsal view; 12, habitus in lateral view. Scale bars 8–9, 11–12: 1 mm; 10: 0.5 mm.

FIGURES 19–23. Dasyrhopala tarsalis Jordan, female. 19, habitus in dorsal view; 20, habitus in ventral view; 21, pygidium in dorsal view; 22, head in dorsal view; 23, habitus in lateral view. Scale bars 19–20, 22–23: 1 mm; 21: 0.5 mm.

FIGURES 37–41. Dasyrhopala trimellina, holotype male from Barra de São Francisco (Espírito Santo). 37, habitus in dorsal view; 38, habitus in ventral view; 39, pygidium in dorsal view; 40, head in dorsal view; 41, habitus in lateral view. Scale bars 37–38, 40–41: 1 mm; 39: 0.5 mm.

FIGURES 48–51. Dasyrhopala trimellina, paratype female from Linhares (Espírito Santo). 48, habitus in dorsal view; 49 habitus in lateral view; 50 pygidium in dorsal view; 51, head in dorsal view. Scale bars 48–49, 51: 1 mm; 50: 0.5 mm.