Pseudastylopsis Dillon, 1956

Monné, Miguel A., Santos-Silva, Antonio & Monné, Marcela L., 2020, Key to Mexico and Central America genera of Acanthocinini (Coleoptera Cerambycidae, Lamiinae) without erect setae on elytral surface, excluding the Caribbean Islands, Zootaxa 4861 (3), pp. 301-337 : 325

Pseudastylopsis Dillon, 1956

( Figs. 49–50 )

Pseudastylopsis Dillon, 1956b: 220 .

Type species — Leptostylus nebulosus Horn, 1880 (original designation).

Diagnosis. From the original description: “Pronotum quite cylindrical, sides subparallel, widest just behind middle, not quite half again as wide as long, lateral tubercles small, not or scarcely equaling median discal tubercle in this respect; disk entirely, distinctly punctate, with five or seven tubercles, the central one strongly prominent. Elytra distinctly punctate to apices, usually with prominent costae, always tuberculate or with scattered, serrate tufts […] Prosternal process one-sixth as broad as a procoxal cavity; mesosternal process about two-thirds as broad as a mesocoxal cavit.” Number of species currently included: 4; in Mexico and Central America : 3.

Remarks. Pseudastylopsis was characterized by its narrow prosternal process. However, this feature is very variable in genera of Acanthocinini . Furthermore, according to Linsley & Chemsak (1995), P. nelsoni nelsoni Linsley & Chemsak, 1995 , and P. nelsoni australis Linsley & Chemsak, 1995 have the prosternal process “about half as broad as coxal cavity”, and not “less than half as broad as coxal cavities”, as reported in the key to genera from Linsley & Chemsak (1995). Also, accordingly to Chemsak & Linsley (1986), their new species P. squamosus , which apparently does not belong to the genus, has the prosternal process “almost one-half as broad as coxal cavities.”

Figures

FIGURES 43–55. 43) Paranisopodus heterotarsus, male, dorsal habitus (from Nascimento & Santos-Silva 2019). 44) Pattalinus charis, holotype male, dorsal habitus (by Jesus Santiago Moure). 45) Periestola strandi, male, dorsal habitus (from Santos- Silva et al. 2019). 46–48) Proxatrypanius rockefelleri, male: 46) Lateral habitus; 47) Dorsal habitus; 48) Ventral habitus. 49–50) Pseudastylopsis nebulosus, male: 49) Dorsal habitus; 50) Ventral habitus. 51) Pseudolepturges rufulus, male, dorsal habitus (from Nascimento & Perger 2018). 52) Stenolis inclusa (Bates, 1885), male, dorsal habitus. 53) Sternacutus zikani, holotype, dorsal habitus (from Monné et al. 2019). 54) Sternidius crassulus LeConte, 1873, holotype, dorsal habitus (by Jesus Santiago Moure). 55) Styloleptus rhizophorae Chemsak & Feller, 1988, holotype, dorsal habitus (from Lingafelter et al. 2020).