Stegomerus Wood, 1967: 129

Johnson, Andrew J., Hulcr, Jiri, Knížek, Miloš, Atkinson, Thomas H., Mandelshtam, Michail Yu., Smith, Sarah M., Cognato, Anthony I., Park, Sangwook, Li, You & Jordal, Bjarte H., 2020, Revision of the Bark Beetle Genera Within the Former Cryphalini (Curculionidae: Scolytinae), Insect Systematics and Diversity 4 (3), No. 1, pp. 1-81 : 66-67

Stegomerus Wood, 1967: 129

( Fig. 35 )

Type of genus

Stegomerus vulgaris Wood, 1967 .

Diagnosis

Stegomerus can be diagnosed by the short, almost spherical antennal scape, the antennal club, which is mostly symmetrical and with one or two visible procurved sutures, by the rounded lateral margin of the pronotum with bifurcating setae on the hypomeron, and the broadly divided apical plate of the proventriculus.

Female

Eye long and broadly emarginated. Frons simple and convex. Antennal scape short, almost spherical. Antennae with five funicle segments. Antennal club with procurved sutures. Lateral margins of pronotum rounded. Hypomeron with bifurcating setae. Proventriculus with open median suture in the apical plate. Crop spines stout. A cluster of spines is present on the posterior side of the proventriculus.

Male

No obvious external differences from the female. Aedeagus not examined.

Distribution

Central America, South America.

Remarks

Nine species known. We transfer Cryphalomorphus parvatis Wood, 1974 from Eidophelus based on the diagnostic characters above. The species may be conspecific with Stegomerus pygmaeus Wood, 1967 .

Type material examined

Holotype and paratype of Stegomerus chiriquensis Wood, 1967 ( USNM) ; paratype of Stegomerus mexicanus Wood, 1967 ( USNM) ; holotype and paratype of Stegomerus mirandus Wood, 1971 ( USNM) ; holotype and paratype of Stegomerus montanus Wood, 1967 ( USNM) ; holotype and paratype of Cryphalomorphus parvatis Wood, 1974 ( USNM) ; holotype of Stegomerus pygmaeus Wood, 1967 ( USNM) ; holotype and paratype of Stegomerus vulgaris Wood, 1967 ( USNM) .

Included species

Stegomerus chiriquensis Wood, 1967: 131 .

Stegomerus diversus Bright, 2019: 181 .

Stegomerus longipennis Wood, 2007: 482 .

Stegomerus mexicanus Wood, 1967 133.

Stegomerus mirandus Wood, 1971: 32 .

Stegomerus montanus Wood, 1967: 132 .

Stegomerus parvatis ( Wood, 1974a: 17) (Cryphalomorphus) comb. nov. [ Scolytogenes ].

Stegomerus pygmaeus Wood, 1967: 130 .

Stegomerus vulgaris Wood, 1967: 134 .

Figures

Figure 35. Images of Stegomerus spp.: Dorsal and lateral photographs of A) S. montanus, B) S. vulgaris, C) Ventral and lateral photograph of S. pygmaeus, D) Proventriculus of S. pygmaeus, eye, and antennae of E) S. montanus, and F) S. vulgaris.