Odontocorynus nunume 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 nunume Prena , new species

( Figs. 8 , 21 , 38 )

Holotype male, labeled: ‘‘ Mexico / Sierra Mixteca [Puebla or Oaxaca]/ C. A. Purpus S. V.’’, ‘‘115’’, ‘‘ HOLOTYPE / Odontocorynus / nunume Prena / Prena design. 2007’’, 3 legs and 2 tarsi missing, re-mounted on point (MNHUB).

Paratypes 1 male, 6 females: Mexico, Sierra Mixteca, C.A. Purpus [male with all legs and right funicle missing] ( MNHUB 1 , JPPC 1 ); Hidalgo, 12 mi [19 km] S Zimapan, 6700’ [2400 m], 28.5.1974, C.W. & L. O’Brien & B. Marshall ( CWOB 2 , JPPC 2 ); Durango, Durango, Wickham ( USNM 1 ) .

Description. Total length 3.7–4.1 mm, standard length 3.3–3.7 mm; body rhomboid oval, derm brownish black, dorsal vestiture of slender ochreous scales intermixed with slightly wider white scales on elytral disk and pronotum ( Fig. 21 ); scutellum, prescutellar lobe of pronotum, and venter with imbricate white scales; prosternal channel absent; elytral apices rounded narrowly and covering most of pygidium. Male: rostrum curved evenly, subcostate, intervals with confluent punctures, anteantennal portion 0.30X length of rostrum; scape lamellate and gradually widened (as in Fig. 13 ), third desmomere funnel-shaped and distended to fifth desmomere ( Fig. 8 ), distal desmomere asymmetrical, dorsally expanded and lamellate, club with basomere excised and process pointed ( Fig. 8 ); anterolateral margin of prosternum without tubercle; tarsomeres missing and not examined for presence of specialized setae; genitalia not examined. Female: rostrum rather evenly curved (similar to Fig. 30 ), glabrous, entire flank with distinct punctures, anteantennal portion 0.47X length of rostrum; desmomeres 1 and 2 subequal, club ovate, approximately as long as first two desmomeres combined; tibiae normal, without additional subdistal tooth.

Distribution. Central Mexico: Durango, Hidalgo, Oaxaca ( Fig. 38 ).

Temporal occurrence. May [1 date].

Plant association. None recorded.

Specific epithet. A noun in apposition referring to Ñuñume, or the land of the clouds, where part of the series was collected.

Discussion. Male O. nunume are unmistakable by the peculiar modification of the antenna, i.e., the deeply excised club and the funnel-shaped third desmomere. The mixed, bicolored dorsal vestiture is also distinctive.

Figures

Figs. 1–18. Odontocorynus spp., 1–2, body shapes, male, dorsal. 1) O. creperus; 2) O. salebrosus; 3) mesotibia, O. umbellae, female; 4) metatibia, O. calcarifer, male; 5–9, antenna, club and distal desmomeres, male. 5) O. tectus; 6) O. salebrosus; 7) O. umbellae; 8) O. nunume; 9) O. creperus; 10–14, antennal scape, dorsal, male. 10) O. latiscapus; 11) O. salebrosus; 12) O. pulverulentus; 13) O. calcarifer; 14) O. umbellae. 15–18, antennal scape, female. 15) O. salebrosus; 16) O. pulverulentus; 17) O. calcarifer; 18) O. umbellae.

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

Figs. 37–39. Map of central Mexico (top) and northern Central America and Mexico (bottom) showing distributions of O. creperus, O. histriculus, O. latiscapus, O. luteogramma, O. nunume, O. procerus, O. subvittatus, O. suturaflava, and O. tectus.

Figs. 23–30. Odontocorynus spp., 23–26, rostrum, male, lateral. 23) O. umbellae; 24) O. calcarifer; 25) O. salebrosus; 26) O. larvatus. 27–30, rostrum, female, lateral. 27) O. umbellae; 28) O. calcarifer; 29) O. salebrosus; 30) O. larvatus.