Stenodontes exsertus ( Olivier, 1795 )

Lingafelter, Steven W., 2015, The Prioninae (Coleoptera: Cerambycidae) of Hispaniola, with Diagnoses, Descriptions of New Species, Distribution Records, and a Key for Identification, The Coleopterists Bulletin 69 (3), pp. 353-388 : 357-358

6. Stenodontes exsertus ( Olivier, 1795) ( Figs. 1i , 10g , 14a )

Discussion. This is a widespread species in Hispaniola and Puerto Rico and the most common prionine in Hispaniola. It has been collected, mostly at lights, in many localities in the Dominican Republic from April through October, and December. Along with the previous species and C. sericeum , it is the only other prionine from Hispaniola that has been collected in the winter—the others are most active in the hot summer months. One specimen was collected in a hollow of Xanthoxylum sp. (Rutaceae) .

Like C. sericeum , this is a sexually dimorphic species and allometrically variable with regard to the male mandibles. One male was seen with extremely developed mandibles over 20 mm in length. While similar to H. bituberculatum , the mandibles in lateral view narrow gradually from the base to the apex. The mesal surface of the mandibles is only sparsely pubescent, unlike those of H. bituberculatum which are densely pubescent. The pronotum lacks a distinct, rounded lobe extending anteriorly on the anterolateral margin, unlike nearly all specimens of H. bituberculatum .

Hispaniolan Localities. Dominican Republic: Barahona Province (Larimar Mines, near Filipinas); Dajabón Province (14 km northwest Río Limpio); Espaillat Province ( Río San Juan ), Independencia Province (La Descubierta); La Altagracia Province (Verón; Hoyo Azul; Punta Cana; Bayahibe; Nisibon); La Vega Province (Pico Duarte; 5 km west Manabao;

Constanza); Monseñor Nouel Province (20 km west Bonao; Río Blanco Vivero Forestal ) ; Monte Cristi Province (5 km north Villa Elisa ); Pedernales Province (Los Tres Charcos) ; Puerto Plata Province (La Cumbre, Pico Isabel de Torres ) .

Figures

Fig. 1. Dorsal habitus of Hispaniolan Prioninae. a) Callipogon sericeum, major male, b) C. sericeum, female, c) Orthomegas cinnamomeus, female, d) Strongylaspis corticarius, male, e) Xixuthrus domingoensis, male, f) X.domingoensis, female, g) Hovorodon bituberculatum, male, h) H. bituberculatum, female, i) Stenodontes exsertus, major male.

Fig. 10. Hispaniolan Prioninae. a) Elateropsis dichroma, female holotype, ventral view, b) Elateropsis woodleyi, male holotype, ventral view, c) Solenoptera scutellata, male, ventral view, d) Solenoptera tomentosa, male paratype, ventral view, e) Hovorodon bituberculatum, female, prosternal process, f) H. bituberculatum, female mandible, lateral view, g) Stenodontes exsertus, female mandible, lateral view.

Fig. 14. Distribution maps of Hispaniolan Prioninae. a) Stenodontes exsertus, b) Monodesmus atratus, Sarifer seabrai, and Prionus aureopilosus.