Schraderiellus hughesae ( 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

Schraderiellus hughesae ( Ruckes, 1959)

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

Schraderia hughesae Ruckes, 1959 ; Schrader, 1960: 499

Schraderiellus hughesae ; 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. Margins of pronotum, hemelytra and connexivum usually dark brown to black, some specimens bear a light yellow line at the anterolateral margins of pronotum and basal half of coria. Yellowish spots variable, usually three or four spots adjacent to each of the cicatrices and others spread on pronotum; three at the base of scutellum and three at apex; one at apexof each radial vein. Connexivum black with few punctures. Coxae, trochanter, femora and tibiae dark brown. Tarsi yellowish or light brown.

Male. Measurements (n=4): head length 2.74 ± 0.08 (2.68–2.80); width 3.26 ± 0.03 (3.24–3.28); pronotum length 3.24 ± 0.04 (3.21–3.27); width 6.17 (6.17); scutellum length 5.23 ± 0.09 (5.16–5.29); width 4.01 ± 0.15 (3.90–4.11); abdomen length 5.22 ± 0.15 (5.11–5.32); width 6.31 (6.31); length of antennal segments: I 1.28 ± 0.06 (1.24–1.32); II 1.20 (1.20); III 2.22 ± 0.25 (2.04–2.40); IV 2.16 (2.16); V 2.60 (2.60); length of labial segments: I 1.64 ± 0.23 (1.48–1.80); II 3.20 ± 0.28 (3.00–3.40); III 2.54 ± 0.08 (2.48–2.60); IV 2.72 ± 0.11 (2.64–2.80); total length 13.49 ± 0.55 (13.10–13.88).

Genitalia. Exposed surface of pygophore dark brown; posterolateral angles moderately divergent, dorsally projected ( Fig. 5A–C, p 1 ), dark brown or yellowish, stout, posteriorly depressed, apices obtuse ( Fig. 5A , pa). Parameres yellowish to castaneous, subparallel to posterolateral angles, attaining apex of segment X, flattened cylindrical, apices obtusely rounded with a subapical denticle ( Figs. 5A–C , par; 6A). Segment X subcylindrical, basal portion membranous forming a line at the limit of the sclerotized area ( Fig. 5A–C, X ). Phallotheca globose ( Fig. 7A , ph); vesica sinuous, almost as long as phallotheca ( Fig. 7A, v ), with a dorsal small obtuse projection ( Fig. 6A, p 3 ).

Female. Measurements (n=34): head length 2.97 ± 0.11 (2.80–3.20); width 3.24 ± 0.10 (2.92–3.36); pronotum length 3.49 ± 0.28 (2.46–3.78); width 6.68 ± 0.15 (6.39–6.95); scutellum length 5.82 ± 0.19 (5.48–6.30); width 4.42 ± 0.11 (4.26–4.61); abdomen length 6.16 ± 0.21 (5.75–6.74); width 7.16 ± 0.64 (6.03–8.20); length of antennal segments: I 1.30 ± 0.07 (1.20–1.44); II 1.21 ± 0.09 (1.08–1.40); III 2.19 ± 0.13 (2.00–2.48); IV 2.25 ± 0.13 (2.00–2.44); V 2.61 ± 0.10 (2.40–2.80); length of labial segments: I 1.77 ± 0.09 (1.60–1.96); II 3.34 ± 0.10 (3.08–3.48); III 2.66 ± 0.11 (2.44–2.84); IV 2.89 ± 0.14 (2.68–3.12); total length 14.65 ± 0,53 (13.41–15.44).

Genitalia. Gonocoxites VIII as wide as long, covering the base of laterotergites IX; posterior margins of gonocoxites VIII over gonocoxites IX convex ( Fig. 8A , gc8). Arms of gonocoxites IX widening to apex, more sclerotized than disc ( Fig. 9A , gcIX). Vesicular area about six times longer than the combined length of pars intermedialis and capsula seminalis. Basal half of outer duct ampoule-shaped ( Fig. 9A , od)

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

Material examined. COSTA RICA, Limon: (Siquirres 100-200m), 1♂, 14.viii.1970, J. & M.Sedlacek ( BPBM) . PANAMA, Bocas: (Dist. Miramar, 9ºN, 82º15’ W) , 1♀, 26.xi.1978, Henk Wolda ( DARC); (Dist. Corriente Grande, 9º17’30’’ N 82º32’41’’ W 100m) , 7♀, 30.iv–5.v.1980, Henk Wolda ( DARC) ; Cerro Campana: (8º40’ N 79º56’ W 850m), 1♀, 29.v.1972, Wm. Bivin ( DARC); (8º40’ N 79º56’ W, 800m), 1♀, 29.vi.1974, Engleman ( INPA); (8º40’ N 79º56’ W 850m), 10♀, 31.vii.1974, Stockwell, ( DARC) ; 3♀, 12.vii.1975, B. Ratcliffe ( DARC) ; 2♂, 5.vii.1974, O’Brien & Marshall ( JEE) ; 1 male, 12.vii.1975, B. Ratcliffe ( DARC) ; 1♂, 5.vi.1995, B. Ratcliffe & M. Jameson ( UFRG) ; 1♀, 13–14.v.1996, Wappes Huether & Marris, ( JEE) ; 5♀, 5.vii.1974, O’ Brien & Marshall ( JEE) ; Prov. El Llano Carti (Rd. K 8 – 11) , 1♀, 26.iv-2. V.1992, JE Wappes ( DBTC); (Rd. Km 9-11) , 2♀, 17.vii.1994, B & I. Ratcliffe, M.Jameson ( DBTC) ; 1♂, 12.vii.1975, B. Ratcliffe ( DARC) . COLOMBIA: Rio D’agua , 1♀, WFH Rosenberg ( USNM) , 1♀ ( AMNH) .

Figures

FIGURE 1. Strict consensus of 12 equally parsimonious tree calculated under implied weighting (k=9.344). (Black circles = nonhomoplasious transformations; white circles = homoplasious transformations. Numbers in red above the branches indicate the relative Bremer support values.

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.