Janeirona vianai ( Kormilev, 1956 )

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 : 461-465

publication ID	https://doi.org/ 10.11646/zootaxa.5497.4.1
publication LSID	lsid:zoobank.org:pub:173E2990-D5C9-4AA5-8185-988DC64F6DCD
DOI	https://doi.org/10.5281/zenodo.13621285
persistent identifier	https://treatment.plazi.org/id/03BB87D3-FFDD-FF8F-FF4E-F9C16677CB9B
treatment provided by	Plazi
scientific name	Janeirona vianai ( Kormilev, 1956 )
status

Treatment

Janeirona vianai ( Kormilev, 1956)

( Figs. 9–14 View FIGURE 9 View FIGURE 10 View FIGURE 11 View FIGURE 12 View FIGURE 13 View FIGURE 14 , 42 View FIGURE 42 )

Serdia vianai Kormilev, 1956: 3 .

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

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

Janeirona vianai : Rolston & McDonald 1979: 189 (syn.); Bachmann 1999: 211.

Types examined:

ARGENTINA, Misiones; Serdia vianai Kormilev, 1956 ; male holotype ( Fig. 9 View FIGURE 9 ). Deposited in: MACN. Labels: Misiones - Argentina / Dep. Concep. - Sta. Maria / XII 52 M. J. Viana // HOLOTYPUS // 53412 // Serdia / vianai / Kormilev, 1953 / Museo Argentino de Ciencias Naturales.

Other material examined:

BRAZIL, Minas Gerais: (Mariléia, Parque Estadual do Rio Doce , -19.7767, -42.6048), female, 13-XII-1978, D'Andretta & Monteiro ( MHNJB) GoogleMaps ; São Paulo: (Ribeirão Preto, -21.1794, -47.8849), female, X-1967 ( UFRG) GoogleMaps ; (Jundiaí, Serra do Japi , -23.2306, -46.9734), male, 31-4-X-XI-2011, ( MZSP) GoogleMaps .

Diagnosis. Body length ranging from 12.3 mm to 13.5 mm. Antennomeres I not surpassing the mandibular plates; inner margins of mandibular plates concave anterior to clypeus; labium not surpassing half of metasternum. Pronotal lateral margins distinctly depressed dorsally; metasternum transversely arched. Pygophore. Posterolateral angles with rounded apices; ventral rim u-shaped.

Description. Body dark brown; legs, labium, and antennomeres IV and V ocher ( Fig. 10 View FIGURE 10 ). 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; each mandibular plate wider than clypeus, with the outer margin convex and the inner margin concave anterior to clypeus; apex of mandibular plates acute; antennomeres I not surpassing the mandibular plates, proportion of antennomeres: I ≅ II<III<IV<V ( Fig. 11 View FIGURE 11 , A); labium not surpassing half of metasternum, without intercalary segment ( Fig. 11 View FIGURE 11 , B); proportion of labiomeres: I<II>III>IV.

Thorax. Pronotum twice as wide as long; anterior and lateral margins shallowly concave ( Fig. 11 View FIGURE 11 , A). Lateral half of the corial posterior margin concave, apical angle almost attaining the middle of connexival segment VI ( Fig. 10 View FIGURE 10 , A). Metasternum transversely arched. Peritremal anterior margin sinuous ( Fig. 11 View FIGURE 11 , C).

Abdomen. Medial portion of urosternites unpunctured ( Fig. 10 View FIGURE 10 , B); inner trichobothria aligned with the outer margin of spiracles in urosternites V and VI; outer trichobothria lateral to spiracles.

Male. Measurements (n=1): Total length 12.30; width of abdomen 6.40; head length 2.00; width 2.50; pronotum length 2.60; width 6.10; scutellum length 4.20; width 3.60; length of antennomeres: I 0.70, II 0.70, III 1.30, IV 1.60, V 2.10; length of labiomeres: I 1.00, Int. 0.10, II 1.30, III 1.00, IV 0.90.

Genitalia ( Figs. 12 View FIGURE 12 , 13 View FIGURE 13 ). Pygophore. Lateral margins diverging towards the posterolateral angles, slightly convex ( Fig. 12. A, E View FIGURE 12 ); dorsal wall length on midline subequal to the length of segment X; dorsal rim concave over segment X ( Fig. 12. A View FIGURE 12 ); posterolateral angles narrowly rounded, dorsally excavated with lateral margins convex, and posteriorly exceeding the segment X for 2/3 the latter’s length ( Fig. 12. A, B View FIGURE 12 ); ventral rim u-shaped, slightly sinuous, lined with setae ( Fig. 12. E View FIGURE 12 ). Segment X with dense setae along the broad ogival posterior margin; slightly projected posteriorly on middle ( Fig. 12 View FIGURE 12 , 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 slightly twisted and little longer than the internal ( Fig. 12 View FIGURE 12 , A, B; 13 View FIGURE 13 , D–F). Phallus. Proximal thecal width 1/3 of the maximum thecal width in lateral view ( Fig. 13 View FIGURE 13 , A); apical lobes of the dorsal process of endosoma weakly dilated and rounded, margins of the emargination juxtaposed ( Fig. 13 View FIGURE 13 , A–C).

Female. Measurements (n=2): Total length 13.20 ± 0.42 (13.50–12.90); width of abdomen 6.45 ± 0.07 (6.50– 6.40); head length 1.50 ± 0.14 (1.60–1.40); width 2.60 ± 0.14 (2.70–2.50); pronotum length 2.55 ± 0.07 (2.60–2.50); width 6.20 ± 0.14 (6.30–6.10); scutellum length 4.95 ± 0.07 (5.00–4.90); width 3.85 ± 0.21 (4.00–3.70); length of antennomeres: I 0.90 ± 0.14 (1.00–0.80), II 0.80 ± 0.00 (0.80–0.80), III 1.15 ± 0.07 (1.20–1.10), IV 1.45 ± 0.07 (1.50–1.40), V 2.05 ± 0.07 (2.10–2.00); length of labiomeres: I 0.90 ± 0.00 (0.90–0.90), Int. 0.15 ± 0.07 (0.20-0.10) II 1.35 ± 0.07 (1.40–1.30), III 1.15 ± 0.07 (1.20–1.10), IV 0.80 ± 0.00 (0.80–0.80).

Genitalia. ( Fig 14 View FIGURE 14 ). Valvifers VIII longer than wide, lateral angles posteriorly projected relative to the sutural angles, posterior margins convex ( Fig. 14 View FIGURE 14 , A, vfVIII); laterotergites VIII wider than long, posterior margins slightly arched ( Fig. 14 View FIGURE 14 , A, laVIII); laterotergites IX with lateral margins straight, mesial margins convex, and rounded apices, not surpassing mediotergite VIII ( Fig. 14 View FIGURE 14 , A, laIX). Thickening of the vaginal intima subrectangular in ventral view; ring sclerites subtriangular in ventral view, twice wider than the thickening of the vaginal intima ( Fig. 14 View FIGURE 14 , B); proximal portion of ductus receptaculi coiled, more than twice longer than the vesicular area ( Fig. 14 View FIGURE 14 , B, drp); median duct of vesicular area uniformly wide through its length; distal portion of ductus receptaculi dilated towards the pars intermedialis, about twice longer than pars intermedialis and capsula seminalis taken together ( Fig. 14 View FIGURE 14 , B, drd); pars intermedialis 1.3 times longer than capsula seminalis, this with three digitiform projections ( Fig. 14 View FIGURE 14 , B, pi, cs).

Comments. Similar to Janeirona bergi , Janeirona roellae Sampaio & Campos sp. nov., and Janeirona flavipes Sampaio & Campos sp. nov.. Differs from J. bergi by the smaller size, antennomeres I not surpassing the mandibular plates, pronotal lateral margins distinctly depressed dorsally, metasternum transversely arched, and pygophore posterolateral angles with rounded apices. Differs from Janeirona roellae Sampaio & Campos sp. nov. by the 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, and labium not surpassing the middle of the metasternum. Differs from Janeirona flavipes Sampaio & Campos sp. nov. by the brown legs, not contrasting with color of the abdominal venter, and the slightly twisted external branch of the head of parameres.

Distribution: Brazil (Minas Gerais and São Paulo).