Tominotus ondulatus Schwertner 2017, new species
Creators: name: Avendaño, José Mauricio
name: Grazia, Jocelia
name: Schwertner, Cristiano Feldens
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cydnidae
Tominotus
Tominotus ondulatus

description: Tominotus ondulatus Avendaño, new species.
(Figs. 16, 17A–E)
Material examined: Holotype, 1♂, Brazil, RS, Cidreira, (Mata de Restinga), 10-Aug-2003, J. Alvenir col., Pitfall, col. MCN 178564, MCNZ. The single specimen was collected using pitfall in vegetation of a Brazilian coastal habitat called “Restinga”, no additional information is provided in the labels.
Holotype deposited in the Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul, Porto Alegre, Brazil, under registration number 182417.
Diagnosis: Mesopleural evaporatorium interrupted on posterior half by polished darker band (pseudoperitreme), scutellar apex narrowed distinctly less than half as wide as membranal suture, costa with two setigerous punctures, labium surpassing middle coxae and posterior tibia conspicuously sinuous.
The pseudoperitreme, narrowed scutellar apex and the posterior tibia modified suggest that T. ondulatus sp. nov. is closely related to T. communis (Uhler) and T. curvipes (Dallas). Features traditionally used by Froeschner (1960) for distinguish species within cydninae, as the number of setigerous punctures on the costa and lateral margins of the pronotum (Fig. 17A; 18A, D), are different between those species (six to ten, and 20 respectively) and the new species (two and seven); also the lateral margin of metapleural evaporatorium in its anterior half is oblique and in the posterior half is parallel to the lateral area and the apex of the peritreme is almost continuous with the evaporatorium in T. communis (Fig. 18B) and T. curvipes (Fig. 18C), but in T. ondulatus sp. nov. the lateral margin of metapleural evaporatorium is oblique to the lateral area in all its length and the apex of the peritreme is abruptly terminated (Fig. 17E).
The pronotal constriction and the shorter labium length in T. communis (Fig. 18A, E) separates this species from T. curvipes (Fig. 17B, C) and T. ondulatus sp. nov. (Fig. 18D, F), while the curvature of the hind tibia is restricted to its apical half in T. communis (Fig. 18G) and T. curvipes (Fig. 18H), in T. ondulatus sp. nov. is present in all its length (Fig. 17B). The geographical distribution of three species also differs: T. curvipes and T. communis are restricted to Central and southern North America, T. ondulatus sp. nov. is described here for southern Brazil.
Description. Measurements (in mm). (n= 1), body length 9.29; head length 1.43; head width including eyes 2.31, interocular width 1.49; eye-ocelli distance 0.26; ocellar width 0.13; labium I to IV length 1.03 - 1.32 - 1.18 - 0.91; antennomere I–V length 0.49 - 0.56 - 0.54 - 0.78 - 0.82; pronotum length on midline 2.48; pronotum maximum width 4.80; scutellum length on midline 3.53, scutellum width at the base 3.08; corium maximum length 4.84; posterior femur length 2.86; posterior tibia length 3.98; posterior tarsus length 0.99.
Color. Body and legs dark red-blackish. Eyes red. Antennae and tarsi brown Labium light brown. Hemelytral membrane brownish.
Structural characters. Head: mandibular plates rounded forming a semicircle, sparsely and finely punctured and with a submarginal complete row of secondary hair-like setae of two different lengths and two primary setae on each plate, longer than most of the secondary setae. Clypeus polished, parallel-sided, not surpassing the mandibular plates and with two subapical setigerous punctures. Eyes not elongated, projecting half of their width and with a stout apical setae. Ocelli present, separated from eye by more than ocellar width (Fig. 17A). Bucculae lower than labial segment II. Labium surpasses middle coxae (Fig. 17C).
Thorax: Anterior margin of the pronotum broadly emarginated with a row of small setae, at the sides of the head insertion, which extends to the lateral margins continuing in a single row of seven longer setae on each side. Anterior pronotal lobe sparsely covered laterally with minute punctures and with two setae at anterior submargin and one on posterior surface, transverse impression marked by a single row of coarse punctures interrupted medially (Fig. 17A), posterior lobe almost impunctate laterally and with a few coarse punctures near mid line of pronotum. Propleuron polished, prosternal carinae about half as high as labial II, truncate posteriorly (Fig. 17C–D). Scutellum with coarse punctures at basal and lateral margins, surface polished with a few coarse punctures, apex narrowed distinctly less than half as wide as membranal suture. Hemelytron with corial areas well defined, mesocorium minutely punctured, two distinct rows of coarse punctures paralleling clavo-corial suture; exocorium distinctly punctured, costa with two setigerous punctures, clavus with two irregular, longitudinal rows of punctures; membranal suture straight with a small rounded projection at the distal end (Fig. 13B). Evaporatorium interrupted by the pseudoperitreme along posterior margin of mesopleuron, peritreme abruptly terminated, lateral margin of metapleural evaporatorium terminated diagonally, anterior area of mesopleuron posterior and lateral parts of metapleuron polished and impunctated, metepimeral pseudosuture notoriously marked by a line of close set coarse punctures (Fig. 17C–E). Anterior and median legs without distinctive characteristics, posterior legs modified, femora convex ventrally, flattened and slightly wider posteriorly, tibiae abruptly flattened and conspicuously sinusoid all its length, tarsi not modified (Fig. 17B–D).
Abdomen: Sterna III to VI polished and impuctate with a single seta near upper margin, sternum VII with seven long setae at the posterior margin (Fig. 17C–D), pygofore globose, without ornamentations, minutely punctured and with a few shallow rugae laterally, upper margin straight with a faint medial emargination (Fig. 17B, D, G, H), dorsal margin sinuate with three sclerotized projections, lateral ones blunted, central one broad and emarginated (Fig. 17 F-H). Given the homogeneity on the genital structures observed within cydninae genera (Becker & Galileo 1982; Froeschner 1960) and the only specimen available being the holotype, the pygofore was not dissected.
Etymology: The specific epithet alludes to the ondulated posterior tibiae.
Distribution: Brazil (RS) (Fig. 16).
description: Published as part of Avendaño, José Mauricio, Grazia, Jocelia & Schwertner, Cristiano Feldens, 2017, Cydninae (Hemiptera, Heteroptera, Cydnidae) in Brazil: updated checklist, new records, and description of Tominotus ondulatus sp. nov., pp. 401-435 in Zootaxa 4329 (5) on pages 429-431, DOI: 10.11646/zootaxa.4329.5.1, http://zenodo.org/record/1005124