Dinidor saucius Stål, 1870

López, Guilherme E. L., Carrenho, Renan & Schwertner, Cristiano F., 2021, Description of a new species of Dinidor Latreille (Hemiptera: Dinidoridae) from the Brazilian Amazon Rainforest, and new records of D. saucius Stål, Zootaxa 4958 (1), pp. 654-662 : 658-660

Dinidor saucius Stål

1870 Dinidor saucius Stål : 79; Lethierry and Severin, 1893: 235; Kirkaldy, 1909: 254; Schouteden, 1913: 5; Durai, 1987: 228, 231–232.

1873 Cyclopelta saucia: Walker : 27.

2015 Dinidor mactabilis: Schwertner and Grazia : 822, 827, 849, figs.; Genevcius et al., 2016: 1–4.

Distribution. BRAZIL: Espírito Santo, Rio de Janeiro (Cachoeiras de Macacu [new rec.], Itatiaia [new rec.], and Rio de Janeiro); Santa Catarina (Joinville [new rec.]); São Paulo (Barueri [new rec.], Óleo [new rec.], Santos [new rec.], São Bernardo do Campo, São Paulo [new rec.]).

Material examined. Brasil, SP, São Bernardo do Campo, Acampamento dos Engenheiros 23°44’52’’S, 46°38’13.71’’W, 11–12.Nov.2010, Bio de Campo UNIFESP (1♀); [ Brasil] Barueri, São Paulo — Brasil, 28. III.1955, K. Lenko col. (1♀); Brasil, Joinville, S[an]ta. Catarina, Dirings col. [Agt 1956, in the back of the label] (2♀); Brasil, Joinville, Rio Bracinho, S[an]ta Catarina, Museu Dirings col. [Mar 1956, written in the back of the label] (1♀); [ Brazil] Horto Florestal, São Paulo —S.P., Brasil — 13.IV.1962, Lenko & Reichardt col. (2♀); [ Brazil] 1.XII.1954, Barueri (Est. S.P.), K. Lenko leg. (1♀); Brasil São Paulo, Est. SP.—J. J. Ferraciolli, leg., 30.II.1954 (1♀); Brasil, Santos, Est[ado] S. Paulo, Dirings col. [Nov 1950, written in the back of the label] (2♀); [ Brazil] Horto Florestal, São Paulo —S.P., Brasil — 13.IV.1962, Lenko & Reichardt col. (4♂); Brasil, Joinville, S[an]ta Catarina, Dirings col. [Agt 1956 written in the back of the label] (2♂); Brasil, Santos, Est[ado] S[ão] Paulo, Dirings col. [Nov 1950, written in the back of the label] (1♂); [ Brazil] Barueri, São Paulo — Brasil, 28. III.1955, K. Lenko col. (1♂); Brasil, Joinville, S[an]ta Catarina, II-54, Dirings col. (1♂). Itatiaia, E[stado] do Rio-Brasil, J. F. Zikán col., 7.IV.[19]31 (18♀ ♂); Brasil, RJ Estado, Local Ipanema, Col. J. Jurberg, Data X-[19]91, Nº (1♂); Brasil —Estado PR, Local Óleo, Col. Cunha, Data 01/[19]96, Nº (1♂); Brazil, Rio de Jan[eiro], Acc[ess] No. 2966 Nov [ember], CJ Drake coll. 1956 (1♀). [ Brazil] Rio [de Janeiro], PR Uhler Collection, no date (1♀ 2♂).

Comments. The study of the specimens allows us to conclude that the correct identification of the species cited in Genevcius et al. (2016) is actually D. saucius . Some diagnostic characteristics pointed out by Durai (1987) in her key to separate D. mactabilis and D. saucius , for instance the colouration of the costal margin of the corium, are incongruent with the type specimens of both species, and the additional material examined. Indeed, the costal margins of hemelytra in red, orange or light brown is a characteristic seen in every species of the genus Dinidor , and cannot be used to separate the species. Some of the other characters used to diagnose the species, such as the width of the median coloured stripe along the pronotum, showed great variation within the species, and are not reliable for the correct identification of both species, D. mactabilis and D. saucius . Diagnostic characters for the five species of Dinidor with similar colouration (excluding D. braziliensis and D. impicticollis ) are presented in Table 1 .

Prior to this work, the distribution of D. saucius has been scarcely addressed. Stål (1870) described the species from Rio de Janeiro ( Brazil).Although Durai (1987) only mention Brazil for the distribution of D. saucius , additional material examined by the author were collected in the neighbouring State of Espírito Santo (dashed in the map), expanding the distribution of the species. Rolston et al. (1996) only cited Rio de Janeiro, and as the two previous works, no specific locality information was provided. Genevcius et al. (2016) recorded D. saucius (as D. mactabilis , see above) from the state of São Paulo (São Bernardo do Campo). Aside from the new locality records from the states of Rio de Janeiro and São Paulo, we extend the known distribution of D. saucius southwards by at least 600km, to the state of Santa Catarina. The distribution pattern of D. saucius seems to include only the Atlantic Rain Forest region, in southern and southeastern Brazil ( Fig. 9 ).

Figures

FIGURE 9. Map of South America showing the distributional records for D. jograziae (red dot) and D. saucius (yellow dots).