Heteragrion aurantiacum Selys, 1862

LENCIONI, F. A. A., 2013, <p> <strong> Diagnoses and discussion of the group 1 and 2 Brazilian species of <em> Heteragrion </ em>, with descriptions of four new species (Odonata: Megapodagrionidae) </ strong> </ p>, Zootaxa 3685 (1), pp. 1-80 : 5-6

Heteragrion aurantiacum Selys, 1862

Figs. 11 (♂ app), 30A–C (♂ thx), 42A–C (♀ thx), 47A–B (♀ S8–10, basal plate), 50A–B (♂, ♀ habitus), 60 (♂

Heteragrion aurantiacum Selys, 1862: 25 [23 reprint] (description of male and female); Selys 1886: 60 (species diagnosis, H. amazonicum and H. cinnamomeum as synonym); Calvert 1909: 114–115, Fig. 40 (discussion, illustration of male appendages in mediodorsal view); Williamson 1919: 26–28, Figs. 21–22, 78–79, 111, 121–122, 141–142, 143–144 (species diagnosis and illustration of head of male and female, male appendages in mediodorsal and lateral views, male and female prothorax in dorsal view); Santos 1968: 13–15, Figs. 1–4 (larval description, illustration of larval habitus, antennae, labium, female S9–10); Santos 1970: 149 (distribution record); De Marmels 1987: 231 (similarity of H. silvarum in coloration to H. aurantiacum ); Costa & T. C. Santos 1999: 2 (comparison with H. consors larva); Costa & T. C. Santos 2000: 4 (key); Lencioni 2005: 126, Figs. 75A–C (description and distribution, illustration of male appendages in mediodorsal, dorsal and lateral views); Machado 2006: 1065 (comparison with H. beschkii ); von Ellenrieder & Garrison 2007: 6 (mention and illustration of male appendages); Garrison et al 2010: 88 (list).

Types. syntype males (examined) in IRSNB and female syntype in MCZ (not examined). The male examined with the following labels: " H. aurantiacum [manuscript black ink on pale blue paper]" and "Cl. 3[manuscript black ink on dark blue paper]".

Additional material examined. 76♂ 12♀. Argentina: Misiones; Arroyo Mbocay nr. Pto. Iguazú , 23º37.48’ S, 54º35.19'W, 250 m, 22-I-1997, 1♂, leg. T. W. Donnelly ; Brazil: São Paulo State: Jacareí , Bairro Campo Grande, 25-II/ 28-IV-1996, 2♂ , leg. FAAL; Jacareí, Fazenda Santana do Rio Abaixo , 23º14'55"S, 46º00'27"W, 569 m, 01-V/ 15-IX/ 09-XI-1996, 10-IV-1998, 01-IX/ 27-XI-1999, 04-III-2001, 12-X-2002, 27♂ 5♀ (1 tandem pair) , leg. FAAL & FL; Jacareí, Jardim Coleginho, 25-XI-2010, 1♀ , leg. FAAL; Peruíbe, Estação Ecológica Juréia-Itatins , 24º22'48"S, 47º04'40"W, 10 m, 09-III-2000, 7♂ 3♀ , leg. FAAL; Campos do Jordão, Estrada Campos do Jordão— Santo Antonio do Pinhal , 22º49'34"S, 45º44'06"W, 1074 m, 01-IV-1999, 1♂ , leg. FAAL; Brotas, Fazenda Santa Luzia da Boa Vista , 22º13'48"S, 48º15'09"W, 594 m, 22-I-1999, 16-VI/ 02-XI-2001, 31-V-2002, 8♂ , leg. FAAL; Pindamonhangaba, Fazenda Trabiju , 22º50'40"S, 45º31'01"W, 651 m, 22-I/ 29-XI-1998, 19-III/ 26-III-1999, 17♂ 1♀ , leg. FAAL; São José dos Campos, Horto Florestal Augusto Ruschi, 16-VI-1996, 1♀ , leg. FAAL; Iguape, 22- IV-1995, 1 male , leg. FAAL; Caraguatatuba, Parque Estadual da Serra do Mar—Núcleo Caraguatatuba , 23º35'37"S, 45º25'39"W, 119 m, 14-I/ 2-II-2000, 21-IV-2001, 5♂ 1♀ , leg. FAAL; Salesópolis , 23º35'51"S, 45º43'41"W, 1074 m, 14-III-1999, 29-I/ 19-II-2011, 5♂ leg. FAAL & FL; Rio Claro, Sitio Primavera , 22º24'33"S, 47º36'44"W, 569 m, 03-X-2008, 1 male , leg. FAAL; Espírito Santo State: Santa Tereza, 13-III-1967, 1♂, leg. Paulo Elias.

Illustration made from following specimens. male structures (Fig. 11A, 11B, 30A, 30B, 30C): 1♂ — Brazil: São Paulo State: Jacareí, Fazenda Santana do Rio Abaixo , 27-XI-1999, leg. FAAL (tandem pair—NC 1679) ; male habitus (Fig. 50A): 1♂ — Brazil: São Paulo State: Jacareí, Fazenda Santana do Rio Abaixo, 27-XI-1999, leg. FAAL ( NC 1675 ); female structures (Fig. 42A, 42B, 42C, 47A, 47B): 1♀ — Brazil: São Paulo State: Jacareí, Fazenda Santana do Rio Abaixo , 10-IV-1998, leg. FAAL & FL ( NC 889 ); female habitus (Fig. 50B): 1♀ — Brazil: São Paulo State: Jacareí , Fazenda Santana do Rio Abaixo , 12-X-2002, leg. FAAL ( NC 3251 ) .

Distribution. Brazil (states of Bahia, Espírito Santo, São Paulo, Rio de Janeiro), Paraguay, Argentina, Venezuela. From 0 to 1074 m a.s.l. It is sympatric with H. consors in Caraguatatuba and Ubatuba, with H. tiradentense in Salesópolis, and with H. brianmayi in Ubatuba.

Diagnosis. Male: thorax with yellow line bordering black middorsal carina and no additional dark stripe on pterothorax (yellow line also bordered by dark line in older specimens) (Figs. 30A, 30B). Cercus in lateral view: small dorsobasal and ventrobasal expansions present. Almost straight (Fig. 11B). Cercus in mediodorsal view: basal, medial and apical portions subequal. No ventral expansion present. Medial process wide triangular plate, apex slightly bifurcate and not forming two distinct arms, with sclerotized ridge crossing middle of process (Fig. 11A). Female: thorax with yellow line bordering black middorsal carina and no additional dark stripe on pterothorax (yellow line also bordered by dark line in older specimens) (Figs. 42A, 42B). Female very close to female H. consors (and sympatric in several localities). Main structural difference between females shape of prothorax, roughly triangular in H. aurantiacum (Fig. 42C) and rectangular in H. consors (Fig. 42D). Valves of ovipositor not reaching distal S10, and in lateral view, ventral margin with small spines. Cercus longer than S10, with tuft of bristles at tip ( Fig. 47A ). Basal plate: dorsal edge very long, ventral edge very small giving triangular appearance, outer edge almost straight and forming very acute angle with ventral edge of ovipositor ( Fig. 47B ). Main difference in coloration two dark semicircles lateral to each compound eye in H. consors female (Fig. 42E),

not observed in females of H. aurantiacum (Fig. 42A); darker mark on antefrons of H. aurantiacum triangular (rectangular in H. consors ), and labrum without dark marks in H. aurantiacum (Fig. 42A), large dark mark in center in H. consors (Fig. 42E).

Figures

FIGURE 40. Heteragrion dorsale male: (A) thorax in lateral view, (B) thorax in dorsal view, (C) prothorax in dorsal view;

FIGURE 47. Female: Heteragrion aurantiacum (A) S8–S10, (B) basal plate; Heteragrion consors (C) S8–S10, (D) basal plate; Heteragrion luizfelipei (paratype) (E) S8–S10, (F) basal plate; Heteragrion triangulare (G) S8–S10, (H) female basal plate.

FIGURE 1–6. Appendage structure (1,2,3,5 lateral view, 4 distal apical view, 6 mediodorsal view): (A) basal portion of cercus,