Schraderiellus cinctus ( Ruckes, 1959 )

Roell, Talita & Campos, Luiz Alexandre, 2018, Phylogeny and revision of Schraderiellus Rider, 1998 with the description of five new species (Hemiptera, Pentatomidae, Discocephalinae, Ochlerini), Zootaxa 4508 (1), pp. 47-67 : 58-59

Schraderiellus cinctus ( Ruckes, 1959)

( Figs. 3C–D , 5D–F , 6B , 7B , 8B , 9B )

Schraderia cinctus ; Ruckes, 1959; Schrader, 1960: 499 Schraderiellus cinctus Rider, 1998: 505 ; Campos & Grazia, 2006: 154; Roell & Campos, 2015: 575–576

Holotype: male, AMNH

Type locality: COSTA RICA, Turrialba

Description. Dark brown to black. Lateral margins of pronotum, hemelytra and connexivum usually outlined in yellow or orange. Often with a yellow spot at apex of each radial vein. Pronotum, scutellum and hemelytra may present sparse yellow spots. Coxae, trochanter, femora and tibiae dark brown, tarsi yellowish ( Fig. 3B ).

Male. Measurements (n=8): head length 2.65 ± 0.15 (2.41–2.80); width 3.11 ± 0.08 (3.04–3.24); pronotum length 3.37 ± 0.14 (3.25–3.60); width 6.17 ± 0.13 (6.03–6.39); scutellum length 5.12 ± 0.20 (4.80–5.35); width 4.27 ± 0.32 (3.90–4.72); abdomen length 4.92 ± 0.42 (4.26–5.46); width 6.22 ± 0.20 (6.03–6.60); length of antennal segments: I 1.23 ± 0.05 (1.20–1.32); II 1.17 ± 0.15 (1.00–1.40); III 2.09 ± 0.14 (2.04–2.40); VI 2.23 ± 0.15 (2.04–2.40); V 2.56 ± 0.17 (2.44–2.76); length of labial segments: I 1.64 ± 0.09 (1.55–1.79); II 2.99 ± 0.13 (2.80–3.16); III 2.30 ± 0.22 (1.92–2.48); IV 2.72 ± 0.10 (2.60–2.84); total length 13.17 ± 0.58 (12.48–14.00).

Genitalia. Exposed surface of pygophore castaneous; posterolateral angles moderately divergent, stout, posteriorly depressed, apices rounded ( Fig. 5D–F ). Parameres yellowish, subparallel to posterolateral angles, attaining apex of segment Xor slightly shorter, cylindrical, apices flattened with subapical denticle ( Figs. 5D–F , 6B ). Segment X subcylindrical, basal portion membranous forming a line at the limit of sclerotized area ( Fig. 5D– F ). Phallotheca globose, vesica sinuous, slightly longer than phallotheca ( Fig. 7B ).

Female. Measurements (n=11): head length 2.40 ± 0.19 (2.80–3.20); width 3.16 ± 0.08 (3.03–3.28); pronotum length 3.66 ± 0.17 (3.30–3.78); width 6.60 ± 0.23 (6.10–6.81); scutellum length 5.73 ± 0.24 (5.35–5.98); width 4.23 ± 0.15 (4.04–4.47); abdomen length 6.27 ± 0.31 (5.68–6.53); width 6.88 ± 0.20 (6.53–7.1); length of antennal segments: I 1.17 ± 0.12 (1.00–1.26); II 1.14 ± 0.09 (1.05–1.26); III 2.18 ± 0.10 (2.04–2.32); IV 2.31 ± 0.11 (2.17– 2.45); V 2.64 ± 0.12 (2.51–2.75); length of labial segments: I 1.60 ± 0.16 (1.42–1.85); II 3.00 ± 0.22 (2.62–3.30); III 2.40 ± 0.21 (2.13–2.75); IV 2.58 ± 0.27 (2.13–2.85); total length 14.75 ± 0.74 (13.57–15.44).

Genitalia. Gonocoxites VIII longer than wide covering the base of laterotergites IX. Posterior margins of gonocoxites VIII over gonocoxites IX rectilinear. Laterotergites IX subrectangular, diagonally directed to apex ( Fig. 8B ). Arms of gonocoxites IX widening to apex, sclerotized. Vesicular area about six times longer than the combined length of pars intermedialis and capsula seminalis ( Fig. 9B ).

Distribution: Costa Rica. NEW RECORDS: Nicaragua, Panama.

Material examined. NICARAGUA, Zelaya: (Sulum, 14º15’ N 84º36’ W), 1♀, I.1996 Maes & Hernandes ( UFRG). COSTA RICA, San Carlos: 1♂, Schild & Burgdorf ( USNM); Los Diamantes: 1♂ and 1♀, 31.v.1948, F. Schrader ( USNM); Turrialba: 1♀, 22.v.1951, OL Cartwright ( USNM); 1♀, 21.i.1965, J.A Slater & N. T Davis ( DARC); 1♀, 13–17.iii.1965, SS & Duckworth ( USNM); (Cartago, 646mm), 1♀, 9.vii.1965 M.G Naumann ( UFRG); Heredia: (La Selva 3km S Pto. Viejo 10º26’ N 84º01’ W), 1♀, 1983, HA. Hespenheide ( DARC); 1♂, 3– 5.vi.1984, Riley, Rider & LeDoux ( UFRG); 1♂, 11–17.vi.1986, W. Hanson & G. Bohart ( JEE); (Est. Biol La Selva 150m), 1♂, 20.iv-30.v.1993, Paul M. Freytag & Thomas V. Myers ( JEE); (Est. Biol La Selva), 1♀, 11–13.i.1995, E.G. Riley ( JEE); (Est. Biol La Selva 10º26’ N 84º01’ W 50-150m), 1♂ and 1♀, 19–23.viii.1999, DM. & S. Davis ( USNM); Alajuela, (750m) 1♂, 19.iv.1988, J. Soto ( DARC); [no state], 1♀, G. R Wilson Collector ( CAS). PANAMA, Bocas: ( DT Miramar 9º N, 82º15’ W), 1♀, 25.iv.1979 ( DARC); ( DT Corriente Grande 9º17’30’’ N 82º32’41’’ W, 100mm), 1♀, 24.iii.1980, Henk Wolda ( DARC); Cerro Campana: 1♂, 5.vi.1995, B. Ratcliffe & M. Jameson ( JEE).

Figures

FIGURE 3. Species of Schraderiellus, dorsal and ventral habitus. A, B, S. hughesae; C, D, S. cinctus; E, F, S. luridomaculatus sp. nv.; G, H, S. rufilineatus sp. nv.; I, J, S. luteipedis sp. nv.; K, L, S. brevicolis sp. nv.; M, N, S. falcatus sp. nv.. Scale bars = 1mm.

FIGURE 5. Pygophores in posterior, dorsal and lateral views. A–C, S. hughesae; D–F, S. cinctus; G–I, S. luridomaculatus sp. nv.; J–L, S. rufilineatus sp. nv.; M–O, S. luteipedis sp. nv.; P–R, S. brevicolis sp. nv.; S–U, S. falcatus sp. nv.. Abbreviations: dr, dorsal rim; il, inferior layer; p1, dorsal projection of the posterolateral angles; p2, basal projection of the posterolateral angles; pa, posterolateral angles; par, parameres; vr, ventral rim; X, segment X. Scale bars = 1mm.

FIGURE 6. Parameres; dorsal, posterior, inner lateral and external lateral respectively. A, S. hughesae; B, S. cinctus; C, S. rufilineatus sp. nv.; D, S. luteipedis sp. nv.; E, S. brevicolis sp. nv.; F, S. falcatus sp. nv.. Scale bar: 0.5mm.

FIGURE 7. Male internal genitalia (phallus), lateral view. A, S. hughesae; B, S. cinctus; C, S. rufilineatus sp. nv.; D, S. luteipedis sp. nv.; E, S. brevicolis sp. nv.; F, S. falcatus sp. nv.. Scale bars = 0.5mm

FIGURE 8. Female genital plates, posterior view. A, S. hughesae; B, S. cinctus; C, S. luridomaculatus sp. nv.; D, S. rufilineatus sp. nv.; E, S. luteipedis sp. nv.. Abbreviations. gcVIII, gonocoxites VIII; gcIX, gonocoxites IX; laVIII, laterotergites VIII; laIX, laterotergites IX; X, segment X. Scale bars: 1mm.

FIGURE 9. Female internal genitalia, posterior view. A, S. hughesae; B, S. cinctus; C, S. rufilineatus sp. nv.; D, S. luteipedis sp. nv.. Abbreviations: cs, capsula seminalis; gcIX, gonocoxites IX; gpIX, gonapophyses IX; id, inner ducts; laIX, laterotergites IX; md, medium ducts; od, outer ducts; pi, pars intermedialis; rs, ring sclerites; vi, vaginal intima. Scale bars: 0.5mm.