Discodon tamoio, Biffi & Geiser, 2022

Biffi, Gabriel & Geiser, Michael, 2022, A revision of Discodon tricolor (Guérin-Méneville) and its mimics from the Atlantic forests of Brazil (Coleoptera: Cantharidae), European Journal of Taxonomy 834 (1), pp. 148-189 : 170-172

publication ID

https://doi.org/10.5852/ejt.2022.834.1907

publication LSID

lsid:zoobank.org:pub:C2DF7AC2-3D99-43FF-BB36-CEF8E8747160

DOI

https://doi.org/10.5281/zenodo.7017640

persistent identifier

https://treatment.plazi.org/id/03CEA025-FFF1-FFAA-FD1A-FC2F2D37FEC3

treatment provided by

Felipe

scientific name

Discodon tamoio
status

sp. nov.

Discodon tamoio sp. nov.

urn:lsid:zoobank.org:act:A319DC64-B2FD-4853-A80E-CE88D46B5BC2

Figs 3F View Fig , 6I, T View Fig , 7I View Fig , 8I View Fig , 9I View Fig , 10I View Fig , 13A–C View Fig , 15I View Fig

Diagnosis

Antennae entirely black ( Fig. 3F View Fig ), last ventrite (VII) of males with a strongly prominent acute tip directed ventrally ( Fig. 10I View Fig ); the last ventrite of the females (VII) with a distal margin with two apical rounded lobes projecting posteriorly at middle ( Fig. 15I View Fig ).

Etymology

The specific epithet refers to the Tamoio indigenous people, that inhabited the same region as D. tamoio sp. nov., currently comprising part of the coast of São Paulo and Rio de Janeiro states, Brazil.

Type material

Holotype BRAZIL • ♂; São Paulo, Salesópolis, Estação Biológica de Boracéia ; 23º39′14″ S, 45º53′25″ W, 24–28 Mar. 2011; Expedição MZUSP/FFCLRP leg.; MZSP 46470 View Materials ( Fig. 3I View Fig ). GoogleMaps

Paratypes (14 specimens) BRAZIL • 1 ♂; São Paulo, Salesópolis, Estação Biológica de Boracéia ; 23º39′15.63″ S, 45º53′22.38″ W, 8–12 Mar. 2013; F.F. Albertoni leg.; lâmpada mista [mist lamp]; MZSP 46472 View Materials GoogleMaps 1 ♂; same collection data as for preceding; DZUP 320985 View Materials GoogleMaps 1 ♂; same collection data as for preceding; 23º39′14.5″ S, 45º53′21.7″ W; 16 Mar. 2008; F.R. Fernandes leg.; MZSP 46474 View Materials GoogleMaps 1 ♂; same collection data as for preceding; UFMG-ICO-2200002 GoogleMaps 1 ♀; same collection data as for preceding; 23º39′02.6″ S, 45º53′32.1″ W; 23–27 Mar. 2012; F.F. Albertoni leg.; MZSP 46476 View Materials GoogleMaps 1 ♂; same collection data as for preceding; 23º39′14″ S, 45º53′25″ W; 24–28 Mar. 2011; Expedição MZUSP/FFCLRP leg.; MZSP 46471 View Materials GoogleMaps 1 ♂; same collection data as for preceding; 16–19 Feb. 2018; Expedição MZUSP leg.; MZSP 46477 View Materials GoogleMaps 1 ♀; Ubatuba, Parque Estadual da Serra do Mar, Núcleo Picinguaba ; 3–14 Mar. 2008; F. Esteves and R. Feitosa leg.; MZSP 46478 View Materials 1 ♂; Caraguatatuba, Reserva Florestal ; 40 m a.s.l.; 2 Apr. 1962; Exp. Dep. Zool. leg.; MZSP 46479 View Materials 1 ♂; same collection data as for preceding; 2 Apr. 1962; U.R. Martins, H. Reichardt and Silva leg.; MZSP 46480 View Materials 1 ♀; same collection data as for preceding; CEMT CUIABA 00118358 1 ♂; São Sebastião ; Dec.1955; A.P. Silva leg.; Ferraciolli leg.; MZSP 46482 View Materials 2 ♂♂; Rio de Janeiro, Parque Nacional do Itatiaia ; 700 m a.s.l.; 6 Apr. 1947; W. Zikán leg.; NHMB .

Description

Body length: 10.4–13.6 mm. Coloration ( Fig. 3F View Fig ): head pitch black, lustrous, except in lateral corners of clypeus, dark brown; mandibles dark brown, darker at base and tip; maxillary and labial palpi black; antennae entirely black. Pronotum ( Figs 7I View Fig , 8I View Fig ) lustrous, translucent, with broad irregular black band from anterior to posterior margin, wider anteriorly and near posterior margin, and narrower near anterior half; background pale yellow to light orange with barely defined orange and brown lateral patches. Scutellum and elytra pitch black, slightly lustrous; at mid-length of each elytron, large whitish to pale yellow round spot nearly reaching lateral borders but not meeting at suture. Thorax, legs and abdomen pitch black, tarsal claws brown.

Male ( Fig. 3F View Fig )

Head short, nearly as long as wide, excluding eyes; integument smooth, densely covered with short and fine yellow setae; frons short, vertex flat, occipital region convex, broadly rounded behind eyes. Clypeus flat, anterior margin emarginate, slightly projected anteriorly with median incision. Eyes small, rounded, prominent. Mandibles falciform, acute, without accessory teeth. Last maxillary and labial palpomeres securiform. Antennae ( Fig. 6I View Fig ) slightly flattened dorsoventrally; antennomeres III–IX wider distally, subserrate; antennomeres IX–XI slightly narrower than preceding ones. Pronotum ( Fig. 7I View Fig ) variable, about 1.5 times as wide as long; usually, anterior margin slightly arched, almost straight in middle, anterior angles arched; lateral margins slightly sinuate, with deep notch at posterior third; sometimes lateral margins less sinuate and lateral notches shallow; integument smooth, densely covered with very fine yellow setae. Elytra long, each elytron 4.5 times as long as wide, almost parallel, wider at middle; integument coriaceous, densely covered with short and fine decumbent setae, and much longer thick erect setae. Legs slender, densely pubescent, covered with long and thick setae; tarsi flattened dorsoventrally, fourth tarsomere with transversal slit at base; anterior prothoracic tarsal claws ( Fig. 9I View Fig ) broadly lobed basally, lobe with truncate margin; posterior claws on meso- and metathoracic tarsal claws apparently split at apex, with fine protruding tooth slightly shorter than claws. Abdomen weakly sclerotised, coriaceous, densely covered with long setae; ventrite VI deeply notched at posterior margin, V-shaped, lateral apices arched; ventrite VII ( Fig. 10I View Fig ) with broad lobes, internal and apical margins forming acute tip strongly projecting ventrally. Aedeagus ( Fig. 13A–C View Fig ) triangular, ventral wall of tegmen parallel at base and strongly narrowing apically, apex acute; fringe of long setae along lateral margins of tegmen dorsally; parameres robust, very long, sinuous, apices acute, convergent; median lobe short, membranous, partially retracted behind parameres; central sclerite very long and slender, curved dorsally.

Female

Similar to male; antennomeres ( Fig. 6T View Fig ) broader; pronotum ( Fig. 8I View Fig ) trapezoidal, wider, 1.6 times as wide as long, lateral margins sinuate, without notches; tarsal claws without basal lobe or apical slit; ventrite VI not notched, distal margin slightly arched, concave; ventrite VII ( Fig. 15I View Fig ) broad, lateral and distal margins broadly arched, distal margin with two apical rounded lobes projecting posteriorly at middle.

Distribution

Brazil (São Paulo and Rio de Janeiro states) ( Fig. 16 View Fig ).

NHMB

Switzerland, Basel, Naturhistorisches Museum

NHMB

Natural History Museum Bucharest

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Cantharidae

Genus

Discodon