Cyrtomenus (Syllobus) grossus Dallas

M, Cristina Mayorga & P, Luis Cervantes, 2009, Two new species of Amnestus from Guatemala, with new records for some other Guatemalan burrower bugs (Hemiptera: Heteroptera: Cydnidae), Zootaxa 2311, pp. 19-37 : 27-28

Cyrtomenus (Syllobus) grossus Dallas

Diagnosis. The very great width of the interocular part of the head, which is greater than the length of the head, will permit recognition of this species.

Head. Surface shining, with faint, radiating rugae and minute, widely scattered punctures; rostrum surpassing hind coxae, sometimes reaching sternite IV. Pronotum with lateral margin straight on basal twothirds, with submarginal row of twelve setigerous punctures; transverse impression virtually not impressed, marked by very irregular row of punctures; anterior lobe with intermixed coarse and fine punctures laterally and in subapical band paralleling anterior margin, with broad, shallow basin-like depression over most of middle third; posterior lobe with few minute and fewer coarse punctures scattered irregularly across width. Scutellum disc polished, with about half dozen coarse punctures and several fine ones widely scattered. Clavus and corium shining; clavus with a single row of coarse punctures and several finer scattered ones; mesocorium with one complete and one partial row of punctures paralleling claval suture; exocorium less densely punctured than mesocorium; costa with five or six setigerous punctures. Hind tibia distinctly compressed, gently widened to apical third.

Old records. Purulhá ( Froeschner 1960)