Cyrtomenus marginalis Signoret, 1881

Avendaño, José Mauricio, Correia, Maíra Andrade, Grazia, Jocelia & Schwertner, Cristiano Feldens, 2024, Review and phylogeny of Cyrtomenus Amyot & Serville (Hemiptera: Cydnidae: Cydninae) based on morphological characters, Zootaxa 5453 (3), pp. 301-340 : 338

Cyrtomenus marginalis Signoret, 1881

( Fig. 18 )

Crytomenus marginalis Signoret, 1881: 201 ; Lethierry & Severin, 1893: 62.

Cyrtomenus (Syllobus) marginalis ; Froeschner, 1960: 521.

Material examined: Photos from the holotype provided by Harald Bruckner.

Diagnosis: Dorsal surface of the mandibular plates, punctate; mandibular plates of the same length than clypeus; second antennal segment as long as third; 25–30 lateral submarginal setigerous punctures of the pronotum; Transverse impression marked by a band of punctures; Posterior lobe of the pronotum and disc of the scutellum densely punctate; 21–25 setigerous punctures on the costa.

Redescription. Total length: 7.07 mm

Head flattened dorsally, anterior outline broadly semicircular, surface shining, mandibular plates with prominent radiating rugae and numerous close-set, intermixed moderate and fine punctures; clypeus shorter than mandibular plates ( Fig. 18B ); labium broken, only first segment present.

Thorax: Pronotum surface shining almost totally covered by crowded moderate and minute punctures, disc impunctate; lateral margin with submarginal row of 25 setigerous punctures; transverse impression weak. Scutellum punctured uniformly. Hemelytron surface shining, clavus with two incomplete rows of punctures; mesocorium and exocorium with several moderate punctures sparser than in scutellum; costa with 21 to 23 setigerous punctures ( Fig. 18A ). Mesopleural evaporatorium with pseudoperitreme. Metatibia compressed ( Fig. 18D ).

Abdomen: Sternites III to VI with irregular, postmedian row of setigerous punctures across segments ( Fig. 18D ).

Type data: The holotype specimen is a female deposited in NHM Wien, labeled: “ Brasil ”, coll. Signoret.

Distribution: Brazil.

Remarks: The species is known only from the type specimen.

Figures

FIGURE 18. C. marginalis: (A) dorsal view; (B) head dorsal; (C) evaporatorium; (D) lateral view (Photos by Harald Bruckner). Scale bar: 1 mm.