Schraderiellus brevicolis Roell & Campos

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 : 62

Schraderiellus brevicolis Roell & Campos , sp. nv.

( Figs. 3K–L , 5P–R , 6E , 7E )

Etymology: The name refers to the male genitalia which is smaller than other species of Schraderiellus .

Latin = brevis, short; colis, penis.

Holotype: male, here designated. PANAMA, Cerro Campana, 5.vii.1974 O’Briens & G Marshall (JEE) Deposited in: AMNH

Paratypes. PANAMA, Cerro Campana: 1♂, 29.vi.1974 (DARC) Deposited in: UFRG; 4♂, 5.vii.1974, O’Briens & G Marshall (JEE) Deposited in: 1 JEE; 1 UFRG

Description. Dark brown; some specimens with a yellow line on the lateral margins of pronotum. One yellow spot at the apex of each radial vein, other variable spots on hemelytra. Coxae, trochanter, femora and tibiae dark brown. Tarsi yellowish ( Fig. 3K–L ).

Male. Measurements (n=6): head length 2.64 ± 0.08 (2.60–2.76); width 3.05 ± 0.09 (2.92–3.12); pronotum length 3.12 ± 0.16 (2.89–3.27); width 6.01 ± 0.30 (5.60–6.31); scutellum length 4.99 ± 0.19 (4.72–5.72); width 3.84 ± 0.10 (3.69–3.90); abdomen length 4.85 ± 0.40 (4.26–5.18); width 5.91 ± 0.27 (5.53–6.17); length of antennal segments: I 1.14 ± 0.05 (1.08–1.20); II 1.13 ± 0.06 (1.08–1.16); III 1.97 ± 0.12 (1.80–2.08); IV 2.01 ± 0.08 (1.92–2.08); V 2.40 ± 0.04 (2.40–2.36); length of labial segments: I 1.61 ± 0.10 (1.52–1.72); II 3.20 ± 0.16 (3.04–3.36); III 2.40 ± 0.04 (2.40–2.36); IV 2.84 ± 0.12 (2.72–2.96); total length 12.87 ± 0.70 (12.01–13.72).

Genitalia. Pygophore subglobular, castaneous, smaller than other species of Schraderiellus ; posterolateral angles slightly parallel, stout, apices rounded, inner surface yellowish ( Fig. 5P–R ). Parameres yellowish, moderately divergent, shorter than segment X, cylindrical digitiform, apices slightly flattened with subapical denticle ( Figs. 5P–R , 6E ). Segment X subcylindrical, basal portion membranous forming a concave line on limit with sclerotized area; ventrally sclerotized ( Fig. 5P–R ). Phallotheca globose, vesica almost straight, subequal to phallotheca in length ( Fig. 7E ).

Distribution: Panama.

Female unknown.

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