Description of a new species of Dinidor Latreille (Hemiptera: Dinidoridae) from the Brazilian Amazon Rainforest, and new records of D. saucius Stål Author López, Guilherme E. L. 0000-0002-6031-4453 University of São Paulo, Museum of Zoology (MZUSP), Av. Nazaré, 481, CEP 04263 - 000, São Paulo, SP, Brazil. & guilherme. enrique. lopez @ usp. br; https: // orcid. org / 0000 - 0002 - 6031 - 4453 guilherme.enrique.lopez@usp.br Author Carrenho, Renan 0000-0003-4268-7309 University of São Paulo, Museum of Zoology (MZUSP), Av. Nazaré, 481, CEP 04263 - 000, São Paulo, SP, Brazil. & renan. carrenho @ gmail. com; http: // orcid. org / 0000 - 0003 - 4268 - 7309 renan.carrenho@gmail.com Author Schwertner, Cristiano F. 0000-0001-5104-4925 University of São Paulo, Museum of Zoology (MZUSP), Av. Nazaré, 481, CEP 04263 - 000, São Paulo, SP, Brazil. & Federal University of São Paulo, Department of Ecology and Evolutionary Biology, R. Prof. Artur Riedel, 275, CEP 09972 - 270, Diadema, SP, Brazil. & schwertner @ unifesp. br; http: // orcid. org / 0000 - 0001 - 5104 - 4925 schwertner@unifesp.br text Zootaxa 2021 2021-04-14 4958 1 654 662 journal article 7198 10.11646/zootaxa.4958.1.40 adcee87d-bfbb-4404-9abb-9d4e078166c9 1175-5326 4692744 42358CB8-6BB9-4397-9B9E-1575504EFDE7 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♂ ). TABLE 1 . Comparative diagnostics of the Dinidor species with similar colouration*.

Character/Species	D. jograziae sp. nov.	D. mactabilis	D. pulsator	D. rufocinctus	D. saucius
Body length**	♂14 mm ♀17 mm	♂17.8 mm ♀18.6 mm	♂ (unknown) ♀17.5 mm	♂16.8 mm ♀19.2 mm	♂15.9 mm ♀16.6 mm
General body outline	oval	elongate	oval	elongate	oval
Mandibular plates shape	truncate, not touching each other apically	spatulate	spatulate	spatulate	spatulate
Rostrum length	reaching anterior margins of mesocoxae	reaching anterior margins of metacoxae	reaching anterior margins of metacoxae	reaching anterior margins of metacoxae	reaching anterior margins of mesocoxae
Pronotum colouration	with a red stripe along lat- eral margins, and a medial red stripe suffused with the background colour	with a reddish brown stripe along lateral margins and along the median line, which may extend the entire length	with a colored stripe along lateral margins, and a red to orange anterior median spot or a stripe which may be conspicuous or not	with a red stripe along lat- eral margins, and coloured median spot or stripe which may be conspicuous or not	with a red to orange-brown stripe along lateral margins and the median line
Pronotum lateral margins	straight, not reflexed	slightly convex, reflexed	slightly convex, reflexed	convex, strongly reflexed	slightly convex, slightly reflexed
Humeral angles (angles)	rounded	obtuse	rounded	obtuse	rounded
Scutellum colouration	mesial ochraceous spot at basal margin, and a reddish-brown suffused patch at apex	with an anterior median ochraceous spot, and reddish brown patch at apex	with a red colored antero-median conspicu- ous spot, and a small red colored patch at apex	with orange-colored antero- median spot, and a deep red patch at apex	with an anterior median ochraceous spot and a red to orange-brown patch at apex
Scutellum length	much shorter than half-length of the abdomen	nearly reaching the half-length of the abdomen	nearly reaching half-length of the abdomen	much shorter than half- length of the abdomen	nearly reaching the halflength of the abdomen
Scutellum lateral margins	sinuate	deeply sinuate	deeply sinuate	sinuate	deeply sinuate
Scutellum apex	acuminate	elongate	elongate	acuminate	rounded
Connexiva colouration	red, with large black spots on anterior and posterior margins	red to orange-brown, with black or brown intersegmental spots	red, with small black in- tersegmental spots	red, with faint black intersegmental patches	red to orange-brown, with large black or brown intersgmental spots
Connexiva	broadly exposed	narrowly exposed	narrowly exposed	narrowly exposed	broadly exposed
Distribution	Brazil (North)	Brazil (North), Suriname	Peru, Venezuela	Bolívia, Brazil (North), Colômbia, Costa Rica, Ecuador, Mexico, Peru	Brazil (southeast)

* the species D. braziliensis and D. Impicticollis have unique colouration within the genus Dinidor ; see text for explanation. ** Except for D. jograziae , body length measurements based on Durai (1987) . 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 ).