Magdalinops Dietz, 1891

Clark, Wayne E. & Burke, Horace R., 2002, Revision Of The Weevil Genera Magdalinops Dietz And Chelonychus Dietz (Coleoptera: Curculionidae, Anthonomini), The Coleopterists Bulletin 56 (1), pp. 107-122 : 13-15

Magdalinops Dietz

Magdalinops Dietz 1891:183 .

Type species (by monotypy), Magdalinops vittipennis Dietz .

Kissinger 1964:52, 56. O’Brien and Wibmer 1982:105.

Diagnosis. Antennal club ovoid, compact; basal segment shining, glabrous, ca. 0.33–0.50 X length of club; mesocoxae narrowly separated by distance 0.2– 0.3 X width of one mesocoxa; funiculus with 7 articles; sternum 5 shorter than sterna 3 and 4 combined; tegmen y­shaped.

Plant Associations. Label data for three of the four species of Magdalinops indicate that they are associated with plants in the genera Artemisia and Chrysothamnus (Asteraceae) . No information is available on the fourth species. The immature stages are unknown.

Remarks. Dietz (1891) stated that in Magdalinops the antennal club is ‘‘ovoidal, shining, acuminate at apex.’’ The club is compact, the segments not as distinctly separated from each other as in other anthonomines. The basal segment of the club is longer in Magdalinops than in other anthonomines, ranging from ca. 0.50–0.33 times the length of the club. It is also more shining and more nearly glabrous than in other Anthonomini, especially in M. vittipennis .

Dietz (1891) described the mesocoxae in Magdalinops as ‘‘subcontiguous, that is, very narrowly separated by the mesosternum, which ends in a point, and does not articulate with the metasternum behind.’’ This is true of M. vittipennis , which has the mesocoxae separated by a distance ca. 0.1 X the width of one mesocoxa. In the other three species of Magdalinops , however, the mesocoxae are more widely separated (ca. 0.2–0.3 X as wide as one mesocoxa). In the latter feature, these are more like other anthonomines.

Key to Species of Magdalinops

1 Elytra vittate, scales denser on even­numbered interstriae ( Figs. 1–2 ); profemur toothed; pronotum with middorsal carina; basal segment of antennal club long, ca. 0.50 X length of club, nearly completely glabrous, shining; mesocoxae narrowly separated by distance ca. 0.1 X width of one mesocoxa ----------------------------------------------------------------------------------------------------------- M. vittipennis Dietz

1 ' Elytra not vittate; scales on elytral interstriae uniform, not denser on evennumbered interstriae ( Figs. 3–8 ); profemur unarmed; pronotum without middorsal carina; basal segment of antennal club ca. 0.33 X length of club, setose, except at extreme base; mesocoxae more widely separated by distance ca. 0.2–0.3 X width of one mesocoxa ------------------------------------------------------- 2

2 Tarsus with 5th segment long, slender, 2.8 X longer than 3rd segment (Figs.

12, 20); basal tooth of tarsal claw long, curved ( Fig. 20 ); body form slender ( Figs. 3–4 ) --------------------------------- M. knowltoni Clark and Burke , new species

2 ' Tarsus with 5th segment shorter, stouter, 2.5 X longer than 3rd segment ( Fig. 19 ); basal tooth of tarsal claw short, slender, acuminate ( Fig. 16 ) or obsolete ( Fig. 17 ); body form stout ( Figs. 5–8 ) ----------------------------------------------- 3

3 Rostrum smooth, sparsely punctate; rostrum of female nearly straight basally in lateral view, curved over antennal insertions ( Fig. 9 ); body form narrower, more elongate ( Figs. 5–6 ) --------------------------------- M. alutaceus Hatch

3 ' Rostrum rugose­punctate proximally, rostrum of female more stongly, evenly curved from base to apex in lateral view ( Fig. 10 ); body form stouter ( Figs. 7–8 ) ------------------------------ M. falli Clark and Burke , new species

Figures

Figs. 1–4. Magdalinops spp., habitus. 1) M. vittipennis, ♀, Oak Grove, California; 2) M. vittipennis, ♀, Oak Grove, California; 3) M. knowltoni, ♂, 4 mi. W. Orangeville, Utah; 4) M. knowltoni, ♂, 4 mi. W. Orangeville, Utah.

Figs. 5–8. Magdalinops spp., habitus. 5) Magdalinops alutaceus, habitus, ♀, holotype; 6) M. alutaceus, ♀, holotype; 7) M. falli, ♀, Pasadena, California; 8) M. falli, ♀, Pasadena, California.

Figs. 18–20. Magdalinops spp., tarsal claws, right metathoracic leg, lateral view. 18) M. vittipennis, ♀; 19) M. alutaceus, ♀; 20) M. knowltoni, ♂.

Figs. 15–17. Magdalinops spp., tarsal claws, right prothoracic leg, ♀, dorsal view. 15) M. vittipennis; 16) M. alutaceus; 17) M. falli.

Figs. 9–10. Magdalinops spp., head and thorax, lateral view. 9) M. alutaceus, head and thorax, ♀, 7 mi. E Springville, Utah; 10) M. falli, ♀, Claremont, California.