Sidonis vianai ( González, 2013 ) González & Větrovec, 2021

González, Guillermo & Větrovec, Jaroslav, 2021, New species and records of Neotropical ladybirds (Coleoptera: Coccinellidae), Revista Chilena de Entomología (Rev. Chil. Entomol.) 47 (2), pp. 331-374 : 347-348

Sidonis vianai ( González, 2013) , new combination

( Figs. 4 a-4i)

Neorhizobius vianai González, 2013: 65 .

Sidonis vianai Churata-Salcedo, 2016: 77 (unpublished thesis).

First record for Brazil.

Specimens examined. ARGENTINA: holotype ♂ “Misiones – Argentina / Dept. Concep. Sta. MarÍa / XI-1958 M.J. Viana ”, “ex Colección / M. Viana / Arg 033071” “Colección / J.E. Barriga / Chile […]” ( JEBC) ; 1 ♀ paratype same data as holotype except “Arg 032466”, “Chile 076254” . BRAZIL: 1 ♂ and 2 ♀ “Brasil Mato Grosso / Chapada dos Guimaráes / Faz. Mutuca, 6.12.2009 /Leg. Rocha & Gava, Intercep.” ( CVMD) .

Remarks. The review of the type material and specimens from Brazil has allowed us to confirm that the species N. vianai belongs to the genus Sidonis Mulsant, 1850 , as Churata-Salcedo (2016) proposed, and to include a color pattern re-description, since both the holotype and the paratype specimens have a somewhat deteriorated state and faded coloration. A morphological description in González (2013).

Color pattern re-description (specimen ♂ from Brazil) ( Figs. 4 a-4d). Head black. Antenna and mouthparts brown. Pronotum black except lateral 1/3 orange. Elytra black with apex diffusely brown. Ventral side dark brown except for anterior border of hypomeron orange brown, mesoventrite and metaventrite black, and three last abdominal ventrites reddish brown. Legs with femora dark brown to black, tibiae and tarsi reddish brown. Pubescence white. In the holotype and the paratype specimens, the head is reddish brown, the pronotum dark brown with 1/3 lateral yellow brown and the elytra dark brown ( González 2013).

Measurements (mm): TL 2.5-3.0; PL 0.6-0.7; PW 1.3-1.5; EL 1.9-2.2; EW 2.1-2.4; GD 1.3-1.5.

Geographic distribution. Argentina, Misiones province, and Brazil, state of Mato Grosso.

Remarks. Mulsant (1850) described the genus Aulis Mulsant, 1850 to include some ladybird species of Afrotropical and Neotropical realms. The American species were assigned to the subgenus Sidonis . Later Crotch (1874) and Sicard (1912) described a few new species for South America. Korschefsky (1931) and Blackwelder (1945) included Sidonis (as a subgenus of Aulis ) in the tribe Coccidulini , while Gordon (1994) overlooked it and did not include it in his revision of Coccidulinae or Exoplectrinae. It was not until the 21st century when Churata-Salcedo (2016) and Churata-Salcedo et al. (2017) determined the validity of Sidonis as a genus and assigned it to the tribe Chnoodini in the vicinity of Neorhizobius Crotch, 1874 . Churata-Salcedo (2016) proposed that the two species described by González (2013) in Neorhizobius should be transferred to Sidonis . Churata-Salcedo et al. (2017), in their revision of Sidonis , formalized N. barrigai González, 2013 as a synonym for Sidonis guttata ( Sicard, 1912) without mentioning N. vianai , whose new combination is formally established here.

Figures

Figures 4a-4v. a-i:Sidonis vianai (González); a-d: habitus (dorsal, ventral, lateral, frontal); e: abdomen; f:ventrite6; g-h: tegmen; i: penis.j-v:Siola karpish n. sp.; j-m:habitus (dorsal, ventral, lateral, posterior); n: hypomeron detail; o: antenna; p: abdomen; q: ventrite 6; r-s: tegmen; t: penis guide; u-v: penis and detail. Scale bars in mm. / a-i: Sidonis vianai (González); a-d: habitus (dorsal, ventral, lateral, frontal); e: abdomen; f: ventrito 6; g-h: tegmen; i: penis. j-v: Siola karpish sp. n.; j-m: habitus (dorsal, ventral, lateral, posterior); n: detalle del hipomerón; o: antena; p: abdomen; q: ventrito 6; r-s: tegmen; t: guÍa del penis; u-v: penis y detalle. Escalas en mm.