Janeirona insignis Distant, 1911

Sampaio, Vinícius Gomes, Oliveira, Giulia Valadão De & Campos, Luiz Alexandre, 2024, Revision of Janeirona Distant, 1911 (Hemiptera: Pentatomidae: Ochlerini) with the description of four new species from Brazil, Zootaxa 5497 (4), pp. 451-495 : 455-460

Janeirona insignis Distant, 1911

( Figs. 1–8 , 42 )

Janeirona insignis Distant, 1911: 352 ; Kumar 1969: 693.

Serdia stali Kormilev, 1956: 4 (new synonym).

Zimmeria stali : Ruckes 1958: 20 (syn.).

Zimmerana stali : Ruckes 1962: 234 (syn.).

Janeirona stali : Rolston & McDonald 1979: 189 (syn.); Campos & Grazia 2006: 158–161; Barão et al. 2013; Garbelotto & Campos 2014: 65; Roell & Campos 2019: 1138–1140.

Types examined:

BRAZIL, Rio de Janeiro; Janeirona insignis Distant, 1911 ; male lectotype, here designated (photos examined, Fig. 1 ). Deposited in: NHMUK. Labels: Janeirona / insignis / type Dist. // Rio / 73.44 // Type // Syntype // ♂ // NHMUK 014105077.

BRAZIL, Rio de Janeiro (Deodoro, -22.8547, -43.3847); Serdia stali Kormilev, 1956 ; male holotype ( Fig. 2 ). Deposited in: MACN. Labels: Serdia / ståli / Kormilev 1953 / Museo Argentino de Ciencias Naturales // HOLOTYPUS // Deodora / Brazil / Nov-16-1931 // M. Kisliuk / C. E. Cooley / Collrs. // K. & C. / Brazil / No: 10.

Other material examined:

BRAZIL, Rio de Janeiro: (Angra dos Reis, -23.0471, -44.5205), female, XI-1934, Haroldo Trav ( UFRG) ; ( Angra dos Reis , -23.0471, -44.5205), male, IX-1963, A. Jesus ( UFRG) ; (Angra dos Reis , -23.0471, -44.5205), female, XI-1973, A. Jesus ( UFRG) ; (Angra dos Reis, Japuiba , -22.9744, -44.3049), 5 females, XII-1940, Haroldo Trav. ( UFRG) ; ( Itatiaia , -22.4911, -44.7197), male, 12-III-1928, J. F. Zikan ( CEIOC) ; ( Itatiaia , -22.4911, -44.7197), male, 12-IX-1928, J. F. Zikan ( CEIOC) ; ( Itatiaia , -22.4911, -44.7197), 3 males, 5-IV-1940, J. F. Zikan ( CEIOC) ; ( Itatiaia , -22.4911, -44.7197), female, 1-XII-1940, J. F. Zikan ( CEIOC) ; ( Itatiaia , -22.4911, -44.7197), male, 14-I-1946, J. F. Zikan ( CEIOC) ; (Parati, Pedra branca, -23.1999, -44.7691), female, 9-XII-1941. ( UFRG) ; ( Petrópolis , -22.3862, -43.7686), female, X-1929, Mario Rosa ( MNRJ) ; ( Teresópolis , -22.4171, -43.0286), female, XII-1939, Freitas ( UFRG) ; (Serra dos Órgãos , -22.4959, -43.1699), female, 1940, Parko ( UFRG) ; São Paulo: (Salesópolis, Estação Biológica de Boraceia, -23.5324, -45.8823), male, 24- III-1961, Rabello ( UFRG) ; ( Salesópolis , Estação Biológica de Boraceia , -23.5324, -45.8823), male, 25-III-1961, Reichardt ( UFRG) ; (Salesópolis, Estação Biológica de Boraceia , -23.5324, -45.8823), female, 21-X-1964, Rabelle ( MZSP) ; (Salesópolis, Estação Biológica de Boraceia , -23.5324, -45.8823), female, 21-I-1966, L. R. Silva ( UFRG) ; (Salesópolis, Estação Biológica de Boraceia , -23.5324, -45.8823), female, 3-8-I-1974, Vanin & Leme ( MZSP) ; ( Boraceia , -22.1959, -48.8174), male, XII-1946, Travassos ( UFRG) ; ( Boraceia , -22.1956, -48.7799), 4 males, 5-IX-1963, F. Lane ( MZSP) ; (São Paulo, -23.6814, - 46.9249), female, 10-XII-1916, J. Melzer ( MNRJ) ; Santa Catarina: (Corupá, -26.4248, -49.2868), female, XI-1951, A. Maller ( MNRJ) (27) ; ( Corupá , -26.4248, -49.2868), male, XII-1953, A. Maller ( MNRJ) ; ( Corupá , -26.4248, - 49.2868), female, XII-1953, A. Maller ( MNRJ) ; ( Corupá , -26.4248, -49.2868), female, X-1954, A. Maller ( MNRJ) ; (Florianópolis, São João do Rio Vermelho , -27.4866, -48.4168), male, I-1961, Dirings ( MZSP) .

Diagnosis. Body length ranging from 16.2 mm to 19.6 mm. Maximum head width across the mandibular plates less than half the head width across the eyes; mandibular plates reflected, inner margins straight anterior to clypeus; antennomeres I strongly dilated, distal half surpassing the mandibular plates; labium attaining the middle of metasternum; metasternum transversely arched; peritremal anterior margin almost straight. Pygophore ventral rim v-shaped, with dense setae, absent in the middle. Posterior margins of laterotergites VIII projected in a minute spine.

Description. Body dark brown with legs and labium ocher ( Fig. 3 ). Head wider than long; maximum head width across the mandibular plates less than half the head width across the eyes; posterior margins of the eyes forming an angle of less than 45º with the longitudinal body axis; mandibular plates reflected, each wider than clypeus, with the outer margin convex and the inner margin straight anterior to clypeus, apices acute, juxtaposed in some specimens; antennomeres I strongly dilated, distal half surpassing the mandibular plates, proportion of antennomeres: I ≅ II<III ≅ IV<V ( Fig. 4 , A); labium attaining the middle of metasternum ( Fig. 3 , B), without intercalary segment ( Fig. 4 , B), proportion of labiomeres: I<II>III>IV.

Thorax. Pronotum twice as wide as long; anterior margin shallowly concave, lateral margins subrectilinear to very slightly sinuous ( Fig. 4 , A). Lateral half of the corial posterior margin concave, apical angle attaining the posterior margin of connexival segment VI ( Fig. 3 , A). Metasternum transversely arched. Peritremal anterior margin almost straight ( Fig. 4 , C).

Abdomen. Medial portion of urosternites unpunctured, yellowish in urosternites IV and V ( Fig. 3 , B); inner trichobothria aligned with the outer margin of spiracles in urosternites V and VI; outer trichobothria lateral to spiracles.

Male. Measurements (n=16): Total length 17.90 ± 0.70 (18.70–16.20); width of abdomen 8.30 ± 0.43 (9.10– 7.20); head length 2.40 ± 0.21 (2.90–2.10); width 3.30 ± 0.12 (3.50–3.00); pronotum length 3.40 ± 0.11 (3.60–3.20); width 7.80 ± 0.27 (8.20–7.30); scutellum length 7.00 ± 0.21 (7.30–6.50); width 5.00 ± 0.25 (5.40–4.50); length of antennomeres: I 1.50 ± 0.14 (1.70–1.20), II 1.70 ± 0.22 (2.00–1.20), III 2.95 ± 0.31 (3.50–2.20), IV (n=11) 2.90 ± 0.28 (3.00–2.10), V (n= 6) 3.45 ± 0.19 (3.50–3.00); length of labiomeres: I 1.50 ± 0.03 (1.60–1.40), Int. 0.20 ± 0.03 (0.20–0.10), II 2.10 ± 0.13 (2.30–1.90), III 2.00 ± 0.08 (2.00–1.70), IV 1.50 ± 0.12 (1.60–1.10).

Genitalia ( Figs. 5–7 ). Pygophore. Lateral margins subparallel, slightly convex ( Fig. 5 , A, E; 6 , A, B); dorsal wall length on midline subequal to the length of segment X; dorsal rim concave over segment X ( Fig. 5 , A); posterolateral angles triangular, dorsally excavated with lateral margins convex, and posteriorly exceeding the segment X for more than the latter’s length ( Fig. 5 , A, B); ventral rim v-shaped, slightly sinuous, lined with dense setae ( Fig. 5 , E). Segment X with dense setae along the broad ogival posterior margin ( Fig. 5 , A–C, F). Parameres laterally sinuous; dish-shaped process with an apical tuft of thin setae; apical branches of the parameres’ head diverging, external branch distinctly longer than the internal ( Fig. 7 , D–F). Phallus. Proximal thecal width 1/3 of the maximum thecal width in lateral view ( Fig. 7 , A); apical lobes of the dorsal process of endosoma dilated, bent ventrally ( Fig. 7 , A, dpe)) and rounded at apex, apical emargination arrow-shaped ( Fig. 7 , B, C).

Female. Measurements (n=20): Total length (n=17) 18.70 ± 0.51 (19.60–17.20); width of abdomen (n=17) 8.30 ± 0.34 (8.70–7.40); head length 2.30 ± 0.15 (3.10–2.00); width 3.20 ± 0.10 (3.40–3.00); pronotum length 3.50 ± 0.09 (3.60–3.30); width 7.85 ± 0.27 (8.30–7.50); scutellum length 7.00 ± 0.21 (7.40–6.50); width 5.00 ± 0.18 (5.30– 4.80); length of antennomeres: I 1.40 ± 0.06 (1.50–1.30), II 1.50 ± 0.08 (1.80–1.40), III 2.50 ± 0.21 (3.00–2.10), IV (n=12) 2.75 ± 0.19 (3.00–2.50), V (n=4) 3.20 ± 0.26 (3.00–3.50); length of labiomeres: I 1.40 ± 0.09 (1.50–1.20), Int. 0.20 ± 0.06 (0.30–0.10), II 2.00 ± 0.13 (2.30–1.80), III (n=19) 2.00 ± 0.16 (2.10–1.50), IV (n=19) 1.50 ± 0.03 (1.60–1.40).

Genitalia. ( Fig. 8 ). Valvifers VIII longer than wide, lateral angles posteriorly projected relative to the sutural angles, posterior margins convex ( Fig. 8 , A, vfVIII); laterotergites VIII as wide as long, posterior margin projected in a rounded minute spine ( Fig. 8 , A, laVIII); laterotergites IX with lateral margins straight, mesial margins convex, and rounded apices, not surpassing mediotergite VIII ( Fig. 8 , A, laIX). Unexposed portion of valvifers IX as long as the exposed portion. Thickening of the vaginal intima elliptical in ventral view; ring sclerites subtriangular in ventral view, as wide as the thickening of the vaginal intima ( Fig. 8 , B); proximal portion of ductus receptaculi coiled, more than twice longer than the vesicular area ( Fig. 8 , B, drp); median duct of vesicular area widened distally; distal portion of ductus receptaculi dilated towards the pars intermedialis, slightly longer than pars intermedialis and capsula seminalis taken together ( Fig. 8 , B, drd); pars intermedialis twice longer than capsula seminalis, this with four digitiform projections ( Fig. 8 , B, pi, cs).

Comments. Similar to Janeirona bergi , Janeirona costalimai and Janeirona aurea Sampaio & Campos sp. nov. Differs from J. bergi by the maximum head width across the mandibular plates measuring less than half the head width across the eyes, inner margins of mandibular plates straight anterior to clypeus, and distal half of antennomeres I surpassing the mandibular plates. Differs from J. costalimai by the antennomeres II not clavate, labium not surpassing the middle of the metasternum, metasternum transversely arched, and head of parameres with diverging apical branches. Differs from J. aurea Sampaio & Campos sp. nov. by the dark color, antennomeres I dilated, and head of parameres with diverging apical branches. Differs from all the other species in the genus by the body length greater than 16 mm, and antennomeres I dilated with distal half surpassing the mandibular plates. After examining the photos of the holotype of Serdia stali , considering the description by Kormilev (1956), and comparing with the lectotype of Janeirona insignis , we decide proposing Janeirona stali (= Serdia stali ) a new junior synonym of Janeirona insignis . The types of both S. stali and J. insignis share the same diagnostic characters, notably the body size, the antennomeres I strongly dilated with the distal half surpassing the mandibular plates, and the proportions of the head.

Distribution: Brazil (Rio de Janeiro, São Paulo and Santa Catarina).

Figures

FIGURE 1. Janeirona insignis Distant, 1911, male syntype, A, dorsal; B, ventral; C, lateral; D, labels. Scale bar = 10 mm. © by The Natural History Museum, London, United Kingdom, Michael D. Webb, 2023; published with permission.

FIGURE 2. Serdia stali Kormilev, 1956, male holotype, A, dorsal; B, lateral; C, pygophore in posterior view, D, labels. Scale bars: A,B = 5 mm; C = 1 mm. © by National Museum of Natural History, Washington D.C., United States of America, 2023; published with permission.

FIGURE 3. Janeirona insignis Distant, 1911, male, A, dorsal; B, ventral; C, lateral. Scale bar = 10 mm.

FIGURE 4. Janeirona insignis Distant, 1911, A, head and pronotum in dorsal view; B, labiomeres I and II; C, external scent efferent system. Scale bars: A = 5 mm; B = 1 mm; C = 2 mm.

FIGURE 5. Janeirona insignis Distant, 1911, male, pygophore, A, dorsal; B, dorsolateral; C, posterior; D, lateral; E, ventral, F, segment X. Scale bars A–E = 2 mm; F = 1 mm.

FIGURE 6. Janeirona insignis Distant, 1911, male, pygophore clarified. Scale bar = 2 mm.

FIGURE 7. Janeirona insignis Distant, 1911, male, A, phallus (lateral); B, C, dorsal process of endosoma; D–F, right paramere in dorsal, lateral and medial views, respectively.Abbreviations: dp = dish-shaped process; dpe = dorsal process of endosoma; th = theca; vpe = ventral process of endosoma; vpt = ventral process of theca. Scale bars = 1 mm.

FIGURE8. Janeirona insignisDistant,1911, female,A, genital plates; B, internal genitalia; C, distalportion of ductus receptaculi, pars intermedialis, and capsula seminalis. Abbreviations: cs = capsula seminalis; drd = distal portion of ductus receptaculi; drp = proximal portion of ductus receptaculi; laVIII = laterotergites VIII; laIX = laterotergites IX; pi = pars intermedialis; vfVIII = valvifers VIII; vfIX = valvifers IX; X = segment X. Scale bars: A = 2 mm; B = 2,5 mm; C = 1 mm.

FIGURE 42. Distribution (mapped on the biogeographic regionalization by Morrone 2022) of Janeirona insignis Distant, 1911, Janeirona vianai (Kormilev, 1956), Janeirona bergi (Kormilev, 1956), Janeirona costalimai (Pirán, 1962). Dominions of the Neotropical region sensu Morrone (2022).