Odontocorynus townsendi (Casey) Prena, 2008

Prena, Jens, 2008, Review ofOdontocorynusSchönherr (Coleoptera: Curculionidae: Baridinae) with Descriptions of Four New Species, The Coleopterists Bulletin 62 (2), pp. 243-277 : 243-277

Odontocorynus townsendi (Casey) , new combination

( Fig. 36 )

Nicentrus townsendi Casey 1920: 446 (in table). Holotype female, labeled: ‘‘ Mex’ ’ [encoded; stands for Sierra Madre, Chihuahua], ‘‘CASEY/ bequest/ 1925’’, ‘‘TYPE USNM/ 37936 ’’, ‘‘townsendi/ Csy’’ (USNM).

Recognition. Male O. townsendi have the distal desmomeres very subtly modified and the club not at all; the mandibles have a distinct secondary tooth. All this makes the species rather distinctive within Odontocorynus , but without doubt obscures its generic assignment. Distributional data and gestalt may be useful for preliminary identification, but may need to be confirmed by genitalia dissection. The internal sac is as long as the apodemes, with the basal section with shark-toothed derm and the apical section with numerous anvil-shaped denticles. All specimens studied had the basal lobe of the pronotum as squamose as O. nunume ( Fig. 21 ).

Distribution. Northern part of Sierra Madre Occidental, from southern Arizona to Durango ( Fig. 36 ).

Type locality. Sierra Madre Mountains , Chihuahua, Mexico .

Material examined. MEXICO: Chihuahua ( JPPC 1 , USNM 1 ) , Durango ( AMNH 1 ) , Sonora ( JPPC 1 ) . United States: Arizona ( AMNH 2 , CMNC 1 , CWOB 6 , JPPC 2 , TAMU 4 , USNM 2 ). Total 21 specimens .

Temporal occurrence. July to early September [17 dates].

Plant association. Fagaceae : Quercus sp. [as oak] (1X).

Figures

Figs. 35–36. 35) Map of Florida showing distribution of O. larvatus; 36) Map of United States (without northwest) and bordering regions showing distributions of O. salebrosus and O. townsendi.

Figs. 19–22. Odontocorynus spp., dorsal habitus of new species. 19) O. calcarifer; 20) O. luteogramma; 21) O. nunume; 22) O. procerus.