Potamobates shuar, Buzzetti, Filippo Maria, 2006

Buzzetti, Filippo Maria, 2006, The genus Potamobates Champion in Ecuador, with description of P. shuar n. sp. (Hemiptera: Gerridae), Zootaxa 1306, pp. 51-56 : 52-54

publication ID	https://doi.org/ 10.5281/zenodo.173725
DOI	https://doi.org/10.5281/zenodo.6255216
persistent identifier	https://treatment.plazi.org/id/03BD87F6-FFB5-FF82-FEEB-E315FDCB2AFB
treatment provided by	Plazi
scientific name	Potamobates shuar
status	sp. nov.

Treatment

Potamobates shuar View in CoL n. sp.

Diagnosis: Potamobates shuar is morphologically similar to P. anchicaya , but differs in having a single lateral spine on the right side of the male’s VIII abdominal segment ( Fig. 2A View FIGURE 2. A, B ). In P. anchicaya the male has two lateral spines on the right side of the VIII abdominal segment. In the female P. shuar , the connexiva ( Fig. 1 View FIGURE 1. A C) almost join at the level of the last two abdominal segments, whereas in the P. anchicaya female the connexiva are well separated all along the abdomen.

Description: Apterous male (Holotypus): Ground color shining black, body covered with very dense, short, dark pubescence; head entirely creamy white except vertex and hind margin ( Fig. 1 View FIGURE 1. A D); pronotum with wedgeshaped and anteriorly pointing creamy white marking medially ( Fig. 1 View FIGURE 1. A D); mesonotum black with three differently shaped creamy white longitudinal stripes ( Fig. 1 View FIGURE 1. A D); abdomen black, pleurae ventrally and all sternites creamy white. Bright pubescence present on propleurae, posterolateral corners of mesonotum, mesocoxae, lateral sides of metanotum, metacoxae, and lateral of abdominal tergites I–VII. Length of head (1) more than twice the narrowest interocular space (0.35); width of eye 0.5; eyes extending posteriorly 1/5 onto propleura. Rostrum not reaching hind margin of prosternum. Pronotum wider (1.95) than long (0.95). Mesonotum long if compared with thoracical segments 2.85, widest across mosocoxae (2.5). Metanotum short if compared with other thoracical segments 0.85, widest across metacoxae (2.45). Abdomen short if compared with whole body, its length excluding genital segments 2.45, genital segments longer than abdomen (3.15). Tergites II–V subequal in length (0.2–0.3), tergite I 0.45, tergite VI 0.35, tergite VII 0.7, tergite VIII the longest (2.15).

Tergite VII with angulated connexiva, these not produced and ventrally emarginated in middle.

Tergite VIII ( Fig. 2A View FIGURE 2. A, B ) modified, right lateral side bearing single stout spine rising from more or less defined lobe. In dorsal view hind margin of this tergite bent, wright side longer than left. Pygophore rotated 90° on left, proctiger bearing long, apically widened lateral process on left side, this visible in ventral view ( Fig. 2A View FIGURE 2. A, B ).

Antennae entirely black. Antennomere I longest (1.95), antennomeres II–IV: 0.65, 0.6, 0.9.

Fore femur creamy white with innerventral black stripe, fore tibia and tarsi black. Mid and hind legs proximally dark brown to distally brown; segments length (femur, tibia, tarsus I, tarsus II): fore legs, 2.65, 2.5, 0.2, 0.55, mid, 9.93, 6.1, 2.9, 0.8, hind, 10.12, 5.0, 0.45, 0.2.

Body length 8.1 (mean 8.05 with the 11 male paratypi).

Apterous female (Allotypus): Body more robust than male, coloration similar to that of male. Connexiva almost joining at level of two last abdominal segments, produced posteriorly into long slender embracing lobes ( Fig. 1 View FIGURE 1. A C).

Body length 8.5.

Macropterous male and female unknown.

Derivatio nominis: P. shuar n. sp. is named after the Shuar tribe, which inhabits southern Ecuadorean Amazon.

Examined material: (1 male Holotypus, 1 female Allotypus, 11 male Paratypi) Morona Santiago prov., Bomboiza, 800 m., 22.III.2004, 12ɗɗ 1Ψ, legit. G. Carotti & P. Tirello. All material is in coll. FMB except holotypus and 2 paratypi in coll. ZMUC and 2 paratypi in coll. PUCE.