Tominotus ondulatus Avendaño,

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., Zootaxa 4329 (5), pp. 401-435: 429-431

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Tominotus ondulatus Avendaño

new species

Tominotus ondulatus Avendaño  , new species.

( Figs. 16View FIGURE 16, 17 A – EView FIGURE 17)

Material examined: Holotype, 1♂, Brazil, RS, Cidreira, (Mata de Restinga), 10-Aug-2003, J. Alvenir col., Pitfall, col. MCN 178564View Materials, 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. 17 AView FIGURE 17; 18 A, 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. 18 BView FIGURE 18) and T. curvipes  ( Fig. 18 CView FIGURE 18), 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. 17 EView FIGURE 17).

The pronotal constriction and the shorter labium length in T. communis  ( Fig. 18 A, EView FIGURE 18) separates this species from T. curvipes  ( Fig. 17 B, CView FIGURE 17) and T. ondulatus  sp. nov. ( Fig. 18 D, FView FIGURE 18), while the curvature of the hind tibia is restricted to its apical half in T. communis  ( Fig. 18 GView FIGURE 18) and T. curvipes  ( Fig. 18 HView FIGURE 18), in T. ondulatus  sp. nov. is present in all its length ( Fig. 17 BView FIGURE 17). 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. 17 AView FIGURE 17). Bucculae lower than labial segment II. Labium surpasses middle coxae ( Fig. 17 CView FIGURE 17).

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. 17 AView FIGURE 17), 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. 17 C – DView FIGURE 17). 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. 13 BView FIGURE 13). 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. 17 C – EView FIGURE 17). 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. 17 B – DView FIGURE 17).

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. 17 C – DView FIGURE 17), pygofore globose, without ornamentations, minutely punctured and with a few shallow rugae laterally, upper margin straight with a faint medial emargination ( Fig. 17 B, D, G, HView FIGURE 17), dorsal margin sinuate with three sclerotized projections, lateral ones blunted, central one broad and emarginated ( Fig. 17View FIGURE 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. 16View FIGURE 16).


Brazil, Rio Grande do Sul, Porto Alegre, Museu de Ciencias Naturais da Fundacao Zoo-Botanica do Rio Grande do Sul


Brazil, Rio Grande do Sul, Porto Alegre, Museu de Ciencias Naturais da Fundacao Zoo-Botanica do Rio Grande do Sul


Porto Alegre, Museu de Ciencias Naturais da Fundacao Zoo-Botanica do Rio Grande do Sul