Semanotus litigiosus ( Casey, 1891 )

James Hammond, H. E. & Williams, Daryl J., 2013, Casey’s conundrum, a review of the genus Semanotus Mulsant (Coleoptera: Cerambycidae: Cerambycinae: Callidiini) in North America, Zootaxa 3670 (2), pp. 101-136 : 118-119

Semanotus litigiosus ( Casey, 1891)

( Figs 4 C,E,G, 9A, 10, 16H; Map 3)

Hylotrupes litigiosus Casey, 1891: 25

Material examined. 139 males, 176 females, 53 sex undetermined.

Holotype. Male ( USNM), examined; labelled “Cal.// CASEY /bequest/1925//litigiosa Csy [hand written]// TYPE USNM /35920 [Red label]”.

Diagnosis. This species can be separated from other species of Semanotus by the following combination of characters: color dark brown to black, rarely with antennomeres 4–11 light brown; elytra ranging from completely dark to having 2 pairs of pale yellow transversely oval spots or wide bands; mandible with large median tooth; elytra with one or multiple rows of dense medium to long, semi-erect to erect, golden setae, extending along suture from base to very near apex; labrum rectangular, short and wide; fore legs relatively short, femur equal in length to tibia; protibia, especially in males, distinctly triangular in lateral view; pro- and mesotibial apices expanded, somewhat globular, with dense brush of long setae that often obscures tibial spurs, especially in females; elytra short and wide; antennae long, usually as long or longer than length of elytra; apical antennomeres 8–11 long and narrow in males; male genitalia with tegmen apophyses cylindrical and somewhat flattened, basal ring is often broadly joined, emarginate or widely separated.

Hosts. Abies concolor (Gord. & Glend.) Lindl. (white fir), A. grandis (Dougl.) Lindl. (grand fir), Pseudotsuga menziesii (Douglas-fir).

Flower and Associated Vegetation Records. Pinus sp. (pine), Picea sp. (spruce).

Distribution. Pacific coast, from British Columbia to southern California.

Remarks. The type specimen of this species has been damaged by dermestids ( Coleoptera : Dermestidae ) and most of the abdomen is missing, however, the specimen is still distinguishable as a male by its antennae and profemora. This species tends to be overall larger, the elytra tend to be shorter and stouter, the antennae longer, and the front and middle tibia of different shape than the following species. This is strictly a western species and is found only west of the Rocky Mountains.

Figures

FIGURE 4. A. Pronotum of female S. amethystinus, B. Pronotum of female S. ligneus, C. Mandibles and labrum of female S. litigiosus, D. Mandibles and labrum of female S. ligneus, E. Elytral pubescence of female S. litigiosus, F. Elytral pubescence of female S. a. amplus, G. Pro- and mesotibia of female S. litigiosus, H. Pro- and mesotibia of female S. terminatus.