Scaphisoma rufulum LeConte, 1860

Löbl, Ivan, Leschen, Richard A. B. & Warner, William B., 2021, Scaphisomatini of Arizona (Coleoptera, Staphylinidae, Scaphidiinae) collected by V-Flight Intercept Traps, Revue suisse de Zoologie 128 (1), pp. 173-185 : 182

Scaphisoma rufulum LeConte, 1860

Fig. 15

Material examined: MHNG, WBWC; 1 male, 1 female; Arizona, Santa Cruz Co. Duquesne Rd. , 2.3 rd. Mi E jct. Hwy 82; Santa Cruz R. , 31.3757°N, 110.8406°W, Aug. 3-14, 2018. – MHNG, WBWC; 1 male, 1 female; Arizona, Santa Cruz Co. Palo Prado Rd. , east side Santa Cruz R.; 31.531°N, 111.016°W, July 11-16, 2018 .

Remarks: This species was based on a single specimen ( LeConte, 1860: 323). It is a male examined by the senior author in 1987, bearing the following labels: small, round golden-colour label, “ TYPE 6639” (red) / “ S. rufulum Lec. Cal. ” (handwritten) and my determination label dated 1987. The aedeagus is illustrated for the first time in the present paper ( Fig. 15 ). It is similar with that of S. impunctatum Reitter, 1879 (see Leschen et al., 1990), suggesting close relationships. It differs from that of S. impunctatum by the apical process of the median lobe less inclined, and the parameres more sinuate in dorsal view and narrowed apically in lateral view. Scaphisoma rufulum may be distinguished from S. impunctatum also by its lighter body and completely or to large part fused mesepimera, as in those of S. carolinae Casey, 1893 .

This species is reported from California, Arizona and North Carolina ( Löbl, 2018).

Figures

Figs 11-16. Aedeagi in Scaphisoma. (11-12) S. declivum Löbl, sp. nov., in dorsal and lateral views, scale = 0.1 mm. (13-14) S. desertorum Casey, in dorsal and lateral views, scale = 0.2 mm. (15) S. rufulum LeConte, in dorsal view, scale = 0.2 mm. (16) S. rubens Casey, in lateral view, internal sac extruded, scale = 0.1 mm.