Acanthocinus (Acanthocinus) Dejean, 1821

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 : 305-306

Acanthocinus (Acanthocinus) Dejean, 1821

( Figs. 1–3 )

Acanthocinus Dejean, 1821: 106 .

Type species — Cerambyx aedilis Linnaeus, 1758 (subsequent designation, Blanchard, 1841: pl. 67).

Astynomus Dejean, 1835: 337 .

Type species —not designated.

Aedilis Audinet-Serville, 1835: 32

Type species — Cerambyx aedilis Linnaeus, 1758 (= Aedilis montana Audinet-Serville, 1835 ) (subsequent designation, Duponchel, 1840: 139).

Graphisurus (Canonura) Casey, 1913: 335 .

Canonura; Dillon, 1956b: 225

Type species —Aedilis spectabilis LeConte, 1854 (subsequent designation, Dillon, 1956b: 226).

Graphisurus (Tylocerina) Casey, 1913: 335 .

Acanthocinus (Tylocerina) ; Aurivillius, 1923: 434 (cat.).

Tylocerina; Dillon, 1956b: 230.

Type species — Cerambyx nodosus Fabricius, 1775 (subsequent designation, Dillon, 1956b: 230).

Neacanthocinus Dillon, 1956b: 231 .

Type species — Cerambyx obsoletus Olivier, 1795 (original designation).

Diagnosis. Body elongate; prothorax cylindrical; lateral tubercles prominent, with acute apex, placed about middle; pronotum tuberculate; width of the prosternal process variable, from less than one-fourth to as broad as procoxal cavity; mesoventral process from about one-third to as broad as a mesocoxal cavity. Number of species currently included: 25; in Mexico and Central America : 3.

Remarks. The species of Acanthocinus (Acanthocinus) from Old World appear to belong to more than one genus. When comparing the type species, A. (A.) aedilis ( Linnaeus, 1758) ( Fig. 1 ), it is possible to see that there are species with different body shape, and different prothorax shape. The American species ( Figs. 2–3 ) agree well with some species from Old World currently placed in Acanthocinus (Acanthocinus) , but evidently not with A. (A.) aedilis , which has the body distinctly stouter (body length distinctly shorter than three times humeral width). Furthermore, it is possible that the American species belong to at least three genera. The males of some species have distinct projections in apex of basal antennomeres, especially in V, which is absent in other species.

According to Tavakilian & Chevillotte (2020), the type species of Aedilis Audinet-Serville, 1835 is A. montana (an unnecessary replacement name for Cerambyx aedilis Linnaeus, 1758 ), designated by Thomson (1864). However, Duponchel (1840: 139) designated A. aedilis as the type species of Aedilis: “Ce g. a pour type la Lamia Aedilis Fabr. , ou Cerambyx id. Oliv., dont M. Serville a converti le nom spécifique en nom générique [This genus has by type Lamia Aedilis Fabr. , or Cerambyx id. Oliv., whose specific name Mr. Serville has converted into a generic name].”

Figures

FIGURES 1–14. 1) Acanthocinus (Acanthocinus) aedilis, female, dorsal habitus. 2–3) Acanthocinus (Acanthocinus) spectabilis (LeConte, 1854), male: 2) Dorsal habitus; 3) Lateral habitus. 4) Alcathousiella polyrhaphoides, male, dorsal habitus. 5–7) Alphinellus carinipennis Bates, 1885: 5) Dorsal habitus; 6) Ventral habitus; 7) Lateral habitus. 8) Amniscites pictipes, female, dorsal habitus (from Santos-Silva et al. 2019). 9–10) Anisopodus arachnoides, male: 9) Dorsal habitus; 10) Lateral habitus. 11–13) Apteralcidion lapierrei, male: 11) Dorsal habitus; 12) Ventral habitus; 13) Lateral habitus. 14) Atrypanius conspersus, female, dorsal habitus.