Dasyrhopala tarsalis Jordan 1904
Creators: name: Vilhena, Poliana De Mesquita
name: Mermudes, José Ricardo Miras
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Anthribidae
Dasyrhopala
Dasyrhopala tarsalis

description: Dasyrhopala tarsalis Jordan, 1904
(Figs 1–27, 75)
Dasyrhopala tarsalis Jordan, 1904: 272; Bovie, 1906: 232; Wolfrum, 1929: 19, 122; Blackwelder, 1947: 766; Alonso-Zarazaga & Lyal, 1999: 30; Rheinheimer, 2004: 21 (fig. 37).
Type locality. Brazil.
Type material. Syntype, male (Figs 1–2): JRMM examined and photographed a specimen from the syntype series from Brazil, deposited in the BMNH, bearing the following labels: 1) handwritten rectangular label reading "Brazil"; 2) handwritten rectangular label reading " Dasyrhopala / tarsalis / type. 1904 / N[ovitates] Z[oologicae], p. 272"; 3) printed rectangular label reading " Karl Jordan Coll. / B.M. 1940-109".
Other material examined. BRAZIL, Rio de Janeiro: Rio de Janeiro (Corcovado), 1 male, 7.X.1971, without leg. (MNRJ); 1 female, 27.X.1975, M.A. Monné leg. (DZRJ).
Diagnosis. Antebasal carina centrally angled and sinuous on the sides (Figs 1–2, 5). Elytra (Figs 1–2, 8, 12, 19, 23) with elevated basal gibbosity, encompassing interstriae 1–4, more pronounced on anterior third, extended with swelling on third interstria. The basal and median elytral gibbosities prominent, with odd-numbered interstriae (3, 5, 7, and 9) moderately elevated, most distinctly on third and fifth (Figs 8, 12, 19, 23). Median elongate tubercle contained within 3rd interstria. Femur with moderately dense yellowish scales forming tufts, and protibiae covered with dense, suberect yellowish scales up to their proximal half, with sparse dark brown scales on apical half.
Measurements. Female. Measurements (in mm): total body length—7.98; length of rostrum—0.81, maximum width of rostrum—1.42; length of eye—0.58, distance between inner margin of eyes at middle of frons—1.10; antenna, length of segments: I—0.24, II—0.21, III—0.34, IV—0.28, V—0.22, VI—0.21, VII—0.15, VIII—0.22, IX—0.20, X—0.15, XI—0.18; pronotum, maximum length—2.10, maximum width—2.37; elytra, maximum length—4.20, width in humeral part—2.75; pygidium, maximum length—1.04, maximum width—1.10.
Redescription. Males and females (Figs 1–27). General integument dark brown, antennae and ventrites light brown. Rostrum covered with dark brown, light, and pale yellow scales without striped pattern. Antennae (Fig. 6) reddish at joints with whitish, fine, light setae, denser on club. Pronotum (Fig. 5) with dark brown, light brown, and pale yellow scales without spotted pattern. Elytra dorsally covered with decumbent scales: dark brown, light brown, and pale yellow; odd-numbered interstriae with dark brown scales forming tiny spots, covering parts of basal gibbosity, more densely on median area. Pale yellow scales forming spots mixed with dark brown spots along elevated odd-numbered interstriae. Ventrum (Figs 9, 20) with pale yellow scales, covering all ventrites. Femur (Figs 12, 23) with moderately dense yellowish scales forming tufts throughout. Tibiae (Fig. 3) with denser yellowish scales on the proximal half, sparser dark brown scales on apical half. Tarsi (Fig. 3) with dense, suberect light scales. Pygidium (Figs 10, 21) with dense yellowish scales and sparse dark brown scales.
Eyes (Figs 3–4) lateral, subrounded, with slight invagination on anterior margin. Rostrum (Figs 3–4) 1.6 times wider than long. Scrobe (Figs 3, 12) foveiform; scape pyriform, obliquely truncated at base. Prothorax (Figs 5, 8, 12, 19, 23) dorsally longer than wide, uniformly convex, rounded on sides, wider in antebasal carina. Prothoracic antebasal carina angular centrally and sinuous on sides; subbasal carina vestigial. Prosternum (Fig. 20) with moderately coarse punctures, obliterated by scale covering. Prosternal process narrower at posterior margin, 1/6 smaller than procoxal cavity, not elongate, moderately short, reaching median level of procoxae. Mesoventrite depressed, wider than long, moderately coarsely punctate. Mesosternal process narrower at posterior margin, subtruncate, subequal to 1/2 mesocoxal cavity, reaching the median level of mesocoxae. First segment of protarsus 1/3 length of tibia.
Male terminalia. Tergite VIII (Fig. 14) at least 2 times longer than wide, sides parallel, widely rounded at apical third, distinctly pigmented on lateral and apical margins, with moderately sparse short setae. Sternite VIII (Fig. 14) slightly longer than wide, slightly convergent in apical sixth, and apical margin obliquely truncate and notched in middle, widely pigmented on sides with moderately dense setae and membranous in proximal triangular area. Sternite IX (Fig. 14) with apodemes at least 4 times longer than bifurcated region, strongly sclerotized. Tegmen (Figs 15–16) with apodeme slightly shorter than ring, apical margin rounded without setae, with sides of ring strongly converging toward apex, and lateral margins of paramere subparallel, and internally notched; pre-apical fringe vestigial in middle. Aedeagus (Figs 17–18) slightly curved in apical quarter (lateral view), with tectum and pedon strongly converging from base to apex, apex pointed, tectum (Figs 17–18) conspicuous, with three pointed and sclerotized projections proximally; apodemes with arch and bridge, strongly pigmented, and distinctly separated; internal sac 1/3 shorter than aedeagus.
Female terminalia. Tergite VIII and sternite VIII (Fig. 25) membranous and transverse, sides subparallel, anterior margin straight; more pigmented on sides and near distal angles, with moderately long short setae; apodeme of sternite VIII subequal in length to width of sternite. Ovipositor (Fig. 26) distinct body, without transverse rods; ventral lobe narrow, fusiform, ending before dentate plate, lateral rods at least 1/3 shorter than median rods, latter thickened and obliquely truncate at apex. Dentate plate with two large teeth, one distal spatulate, other proximal, more robust. Spermatheca reniform with tapering apex.
Sexual dimorphism. The males have a longer rostrum, 1.6 times wider than long, and antennae slightly more elongate than females, most noticeable in the length of antennomere III. Ventrite V of males slightly rounded at apex, subtruncate in females.
Distribution (Fig. 75). According to Jordan's description, the reported locality referred only to Brazil. The two specimens studied and compared with photographs of the syntype (BMNH) are from Corcovado, in the city of Rio de Janeiro (Brazil).
description: Published as part of Vilhena, Poliana De Mesquita & Mermudes, José Ricardo Miras, 2025, Review of Dasyrhopala Jordan, 1904 (Coleoptera: Anthribidae) with description of three new species from Brazil, pp. 243-270 in Zootaxa 5632 (2) on pages 245-252, DOI: 10.11646/zootaxa.5632.2.2, http://zenodo.org/record/15371770