Chelonychus longipes Dietz 1891:256

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 : 23-25

Chelonychus longipes Dietz 1891:256 .

Figs. 25, 26 , 29, 31 , 32

Lectotype (here designated). United States. California. Siskiyou Co. : [ Yreka , Cal.] [W G Dietz Coll/Type 1998] (♂, MCZC). Paralectotypes. United States. California. Siskiyou Co. : [ Yreka , Cal.] [ Chelonychus longipes Dietz ] [Type 8159/ Chelonychus / longipes Dietz ] (♀, MCZC); Minnesota. [Min.] [W. G. Dietz Coll./Type 1998] also bearing small square red label (♀, MCZC). Two specimens in the Carnegie Museum under the name Chelonychus longipes , one with a ‘‘Col.’’ label, the other labeled ‘‘Cal.’’, are probably syntypes. Dietz did not indicate the number of specimens he had in his series, but these account for all of the localities he listed: ‘‘ Yreka , Cal. (Dr. Horn); Minnesota, Colorado (H. Ulke).’’

Description. Body ( Figs. 25–26 ): oval in dorsal view; length 1.6–2.1 mm; width 0.8– 1.0 mm. Integument black, broadly visible between scales. Head: vertex with narrow scales, broader, slightly imbricated scales present beneath. Rostrum ( Fig. 25 ): evenly curved; proximal portion shallowly sulcate; long, narrow scales on extreme base replaced toward antennal insertions by narrower, sparser scales; distal portion glabrous. Antenna: funiculus with 7 articles. Prothorax: pronotum with admixture of elongate, narrow, slightly curved, cinereus scales and broader, flattened, cinereous to infuscate scales. Elytra : rounded apically in dorsal view; striae narrow, punctures with minute, inconspicuous setae; interstriae with elongate, narrow, slightly curved, cinereous scales and slightly to distinctly broader, flattened, cinereous to infuscate scales. Pygidium : with slender, cinereous scales. Abdomen: sterna 1–4 with pallid scales laterally, with narrower scales medially; sternum 5 convex, with elongate, setiform scales medially. Legs: profemur with one small ventral tooth; protibia with inner margin prominent in basal 2/3, concave in apical 1/3; protibial uncus long, slender, slightly curved, acute; metatibia with inner margin slightly prominent in basal 2/3, slightly concave in apical 1/3, outer margin straight ( Fig. 29 ); metatibial mucro straight, oblique in lateral view, acute ( Fig. 29 ); tarsal claw with acute basal tooth ( Fig. 31 ). Male Genitalia ( Fig. 32 ): median lobe of aedeagus narrowed to bluntly rounded apex in dorsal view, broadly, evenly curved in lateral view; endophallus minutely denticulate.

Specimens Examined. In addition to the lectotype from California, 45 specimens of C. longipes from the following localities were examined. Canada. Alberta. Carway (2, TAMU); Calgary (1, CMNC); McMurray (1, TAMU); 25 mi. E Writing­on­Stone Provincial Park (2, CMNC). British Columbia. 15 km. E Hudson Hope (1, CMNC). Saskatchewan. 2 mi. N Burstall dunes (1, CMNC); Saskatchewan Landing (1, TAMU); 23 km. E Weyburn (1, CMNC; 2, CWOB). United States. Colorado. Boulder Co.: 1 mi. N Allenspark (1, CWOB); Nederland (1, CWOB; 1, TAMU); 1 mi. N Nederland (3, CWOB). Gilpen Co.: 6 mi. SE Black Hawk (1, TAMU). Larimer Co.: 5 mi. W Estes Park (1, CWOB); 37 mi. W Fort Collins (1, CWOB). Las Animas Co.: 8 mi. N Stonewall (8,900 ', 3, CWOB). Pasco Co.: 15 mi. N Colorado Springs (6,900 ', 2, CWOB). Rocky Mountain National Park. Moraine Park (9, TAMU). Kansas. Pratt Co.: (‘‘ Artemesia ludoviciana , ’’ 1, TAMU). Minnesota. Anoka Co.: Cedar Creek Natural History Area (‘‘ Artemesia ludoviciana , ’’ 3, TAMU). Missouri. Holt Co.: Big Lake State Park (2, CWOB). Montana. Silver Bow Co.: 5 mi. N Nissler (2, AUEM). Nebraska. Lake Maloney (1, TAMU). Oregon. Jackson Co.: Ashland (3, CASC); Talent (1, OSUO).

Plant Associations. Label data indicate that adults of C. longipes have been collected on Artemesia ludoviciana Nutt. (Asteraceae) .

Remarks. Specimens of C. longipes from McMurray, Alberta, are distinctly larger and more densely squamose than the types and have a smaller tooth on the profemur.

Figures

Figs. 25–28. Chelonychus spp., habitus. 25) C. longipes, ♀, Nederland, Colorado; 26) C. longipes, ♀, Nederland, Colorado; 27) C. stragulus, ♀, holotype; 28) C. stragulus, ♀, holotype.

Figs. 29–31. Chelonychus spp. 29) C. longipes, ♂, metathoracic leg, Nederland, Colorado; 30) C. stragulus, ♂, metathoracic leg, Chisos Mountains, Texas; 31) C. longipes, ♂, right metatarsus, Nederland, Colorado.

Figs. 32–33. Chelonychus spp, aedeagus, dorsal view. 32) C. longipes, ♂, Nederland, Colorado; 33) C. stragulus, ♂, Chisos Mountains, Texas.