Dasyrhopala thapsinogutta 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 : 261-266

Dasyrhopala thapsinogutta Vilhena & Mermudes sp. nov.

( Figs 55–74 )

http://zoobank.org/ urn:lsid:zoobank.org:act:830CE312-0F21-445D-9070-D986DEEB1672

Type locality. Parque Sooretama , Espírito Santo, Brazil .

Type material. Holotype, male ( Figs 55–65 ) deposited at DZRJ: Espírito Santo: Parque Sooretama. XI/1967, F.M. Oliveira leg. Paratypes, 1 male, 1 female: with the same data as holotype ( MNRJ) .

Diagnosis. Antebasal carina ( Fig. 55 ) sublinear at middle with slope on sides. Rostrum ( Fig. 58 ) covered with fine, light longitudinal bands of dense yellowish scales. Pronotum ( Fig. 55 ) covered with pale yellow scales close to posterior margin, forming horizontal line and vertical line in center of pronotum, reaching antebasal carina and slightly surpassing it. Elytra ( Fig. 55 ) with less pronounced basal gibbosity, covered with pale yellow scales that form small sub-rounded spots along interstria 1, and yellowish scales that form small sub-rounded spots along all odd-numbered interstriae (3, 5, 7, and 9). Pygidium ( Fig. 57 ) covered with denser yellowish scales near lateral and apical margins.

Measurements. Holotype, male ( Figs 55–65 ). Measurements (in mm): Total body length—8.16; head: length of rostrum—0.82, maximum width of rostrum—1.39, length of eye—0.64, distance between inner margin of eyes at middle of frons—1.13; antenna, length of segments: I—0.29, II—0.24, III—0.55, IV—0.48, V—0.34, VI—0.34, VII—0.26, VIII—0.19, IX—0.20, X—0.21, XI—0.34; pronotum: maximum length—2.25, maximum width—2.65, elytra: maximum length—4.16, width in humeral part—3.0, pygidium: maximum length—0.40, maximum width— 0.8.

Description. Males and females. General integument black and dark brown, with light brown antennae. Dorsal ( Figs 55–59 , 66–70 ) vestiture with dark brown, yellowish and white scales. Antennae ( Figs 56, 59 ) darker at joints with fine light whitish setae, dense on club. Rostrum ( Figs 58 , 69 ) covered with fine light longitudinal bands of dense yellowish scales. Pronotum ( Figs 55, 59 , 66, 70 ) covered with pale yellow scales near posterior margin, forming horizontal line and vertical line in center of pronotum, reaching antebasal carina and slightly surpassing it. Elytra ( Figs 55 , 66 ) with pale yellow scales that form small sub-rounded spots along interstria 1, and yellowish scales forming small sub-rounded spots along all odd-numbered interstriae (3, 5, 7, and 9). Ventral vestiture ( Figs 56 , 67 ) with sparse pale yellow scales on prosternum to ventrites. Femora and tibiae ( Figs 56, 59 , 67, 70 ) covered with sparse pale yellow scales. Tarsi ( Figs 56 , 67 ) covered with dense pale yellow scales. Pygidium ( Figs 57 , 68 ) covered with denser yellowish scales near lateral and apical margins.

Rostrum ( Figs 58 , 69 ) 2.2 times wider than long, with subparallel lateral margins, micro corrugate. Scrobe ( Figs 59 , 70 ) foveiform; scape pear-shaped. Eyes ( Figs 58–59 , 69–70 ) lateral, sub-rounded, anteriorly notched. Prothorax ( Figs 55, 59 , 66, 70 ) dorsally longer than wide, uniformly convex, rounded at sides and wider in region of antebasal carina. Antebasal carina ( Figs 55 , 66 ) sublinear in center, sloped on sides; secondary carina subbasal, vestigial. Prosternum ( Fig. 56 ) flat, wider than long, micro-wrinkled. Prosternal process ( Fig. 56 ) narrower at posterior margin, short, 1/6 smaller than coxal cavities, reaching half of length of procoxae. Mesosternum ( Figs 56 , 67 ) depressed at anterior margin, with small aggregated punctures at posterior margin and larger, more sparse punctures in median region. Mesosternal process ( Figs 56 , 67 ) narrower at posterior margin, not as much as prosternal process, with subrounded lateral and apical margins. Metasternum ( Figs 56 , 67 ) wider than long, flat.

Male terminalia. Tergite VIII ( Fig. 61 ) at least 2 times longer than wide, sides subparallel, with sides broadly rounded in apical third and subtruncate at apical margin. Sternite VIII ( Fig. 61 ) slightly longer than wide, slightly converging at apical sixth, with apical margin obliquely truncate and notched in middle; broadly pigmented at sides with moderately dense setae, membranous throughout median area. Sternite IX ( Fig. 61 ) with apodemes almost 4 times longer than bifurcate region, bifurcation with narrow, strongly sclerotized apodemes. Tegmen ( Figs 62–63 ) with apodeme slightly shorter than ring, apical margin rounded without setae, with sides of ring strongly converging towards apex, and lateral margins of paramere subparallel, internally notched; pre-apical fringe vestigial in middle. Aedeagus ( Figs 64–65 ) tectum and pedon wide and converging from base, with rounded apex, strongly curved in apical fourth. Pedon wider at base, less narrow than tectum, with arch and bridge between apodemes, strongly pigmented. Tectum ( Figs 64–65 ) conspicuous, with three sharply pointed and sclerotized projections proximally. Internal sac 1/3 shorter than aedeagus.

Female terminalia. Tergite VIII and sternite VIII ( Fig. 72 ) membranous and transverse, with subparallel sides and straight anterior margin; more pigmented at sides and near distal angles; apodeme of sternite VIII with length subequal to width of sternite. Ovipositor ( Fig. 73 ) with distinct body, without transverse rods; lateral rods at least 1/3 shorter than median rods, which are thicker and obliquely truncate at apex. Dentate plate with two large teeth, one distal, sharp, rounded at apex, other proximal, more robust. Spermatheca ( Fig. 74 ) reniform with tapered apex.

Sexual dimorphism. Males have longer antennomeres and females have a more convex pygidium.

Etymology. The name “ thapsinogutta ” refers to the yellow and subrounded scales forming patches on the elytra. The prefix “thapsino” stands for yellow in Greek and “gutta” stands for “drop” in Latin.

Distribution ( Fig. 75 ). Espírito Santo, Brazil.

Differential diagnosis. Dasyrhopala thapsinogutta is distinguished from all other species of the genus by the covering of the rostrum ( Fig 58 , 69 ) with thin, light longitudinal bands of dense yellowish scales, by its pronotum ( Fig 55 ) covered with pale yellow scales close to the posterior margin, forming a horizontal line and a vertical line in the center of the pronotum, reaching the antebasal carina and slightly exceeding it, by its antebasal carina subrectilinear centrally, with a more conspicuous slope on the sides than in D. tarsinivea , and by the covering of the elytra with yellowish scales that form tiny subrounded spots along all the odd-numbered interstriae (3, 5, 7 and 9).

Figures

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

FIGURES 55–59. Dasyrhopala thapsinogutta, holotype male from Sooretama (Espírito Santo). 55, habitus in dorsal view; 56, habitus in ventral view; 57, pygidium in dorsal view; 58, head in dorsal view; 59, habitus in lateral view. Scale bars 55–56, 58–59: 1 mm; 57: 0.5 mm.

FIGURES 60–65. Dasyrhopala thapsinogutta, holotype male from Sooretama (Espírito Santo). 60, abdomen in ventral view; 61, tergite VIII and sternite IX in ventral view; 62, tegmen in dorsal view; 63, tegmen in lateral view, 64, aedeagus in ventral view; 65, aedeagus in lateral view. Scale bars 60: 1 mm; 61–65: 0.5 mm.

FIGURES 66–70. Dasyrhopala thapsinogutta, paratype female from Sooretama (Espírito Santo). 66, habitus in dorsal view; 67, habitus in ventral view; 68, pygidium in dorsal view; 69, head in dorsal view; 70, habitus in lateral view. Scale bars 66–67, 69–70: 1 mm; 68: 0.5 mm.

FIGURES 71–74. Dasyrhopala thapsinogutta, paratype female from Sooretama (Espírito Santo). 71, abdomen in ventral view; 72, tergite VIII and sternite VIII in ventral view; 73, ovipositor in dorsal view; 74, spermatheca in ventral view. Scale bars 71, 73: 1 mm; 72: 0.5 mm; 74: 0.1 mm.