Seeversiella

Key for identification of species of Seeversiella 1 Elytra longer or only a little shorter than pronotum. Pronotal length to elytral length (measured from humeral angle) ratio 1.1 or less ......................................................... 2 – Elytra much shorter than pronotum (Figs. 18­19). Pronotal length to elytral length (measured from humeral angle) ratio more than 1.1 ................................................. 28 2 Pronotum glossy, with weak isodiametric microsculpture or without microsculpture 3 – Pronotum matte, with strong isodiametric microsculpture ....................................... 25 3 Punctation of pronotum asperate. Tergum 8 with three pairs of macrosetae (Figs. 222, 224). Proximal seta of the apex of paramere is approximately as long as the other three setae (Fig. 233). Aedeagus: Figs. 226­233. Spermatheca: Fig. 234. Body length 2.6­3.0 mm, pronotal width 0.53­0.56 mm. Known from Cerro Punta, Panama, at altitude of 2100 m (Fig. 388) .............................. 16. S. brevipennis Gusarov, sp. n. – Punctation of pronotum not asperate. Tergum 8 with four pairs of macrosetae (Figs. 20, 22). Proximal seta of the apex of paramere is much longer than the other three setae (Fig. 33)............................................................................................................... 4 4 Pronotum with weak isodiametric microsculpture ...................................................... 5 – Pronotum without microsculpture ............................................................................. 23 5 Males ............................................................................................................................ 6 – Females (Females of S. nigriceps are unknown) ........................................................ 15 6 Distal sclerites of internal sac strongly sclerotized, hook­shaped (Figs. 31, 35; 48, 51; DS) or dentiform (Figs. 63, 65; DS) 7 – Distal sclerites of internal sac poorly sclerotized, not hook­shaped or dentiform and may have numerous spicules (Figs. 87; 99, 101; 124; 146; DS) ............................... 10 7 Distal sclerites of internal sac hook­shaped (Figs. 31, 35; 48, 51) ............................. 8 – Distal sclerites of internal sac dentiform (Figs. 63, 65; 124) ...................................... 9 8 Body dark brown. Microsculpture on head and pronotum less distinct. Apex of median lobe in lateral view straight (Figs. 26­27). Copulatory piece of internal sac long (Figs. 29, 34). Elytra (measured from humeral angle) longer than pronotum. Wings fully developed, 4 times as long as elytra. Aedeagus: Figs. 24­31, 33­36. Body length 2.4­3.3 mm, pronotal width 0.44­0.54 mm. Widespread in North America, known from Canada to Honduras (Figs. 385­387) .................................................. ...............................................................................1. S. globicollis (Bernhauer) (males) – Body brown. Microsculpture on head and pronotum more distinct. Apex of median lobe in lateral view bent paramerally (Figs. 43­44). Copulatory piece of internal sac short (Figs. 46, 49­50). Elytra (measured from humeral angle) shorter than pronotum. Wings short, 2 times as long as elytra. Aedeagus: Figs. 41­52. Body length 2.5­2.8 mm, pronotal width 0.44­0.49 mm. Known from the Guadalupe Mountains, Texas, at altitude of 2400 m (Fig. 386) ............................... 2. S. texana Gusarov, sp. n. (males) 9 Distal sclerites of internal sac wider (Figs. 63, 65). Aedeagus: Figs. 58­61, 63­67. Body length 2.3­2.8 mm, pronotal width 0.40­0.44 mm. Known from the Huachuca Mountains, Arizona, at altitude of 2150 m (Fig. 386) ................................................... ........................................................ 3. S. sonomotoides Gusarov, sp. n. (males, in part) – Distal sclerites of internal sac narrower (Fig. 124). Aedeagus: Figs. 119­125. Body length 2.4 mm, pronotal width 0.47 mm. Known from Mexico, at altitude of 2400 m (Fig. 387)...............................................8. S. nigriceps Gusarov, sp. n. (males, in part) 10 Apex of median lobe in lateral view widened subapically (Figs. 112­113; 156­157) 11 – Apex of median lobe in lateral view not widened subapically (Figs. 85­86) ............. 14 11 Apex of median lobe in lateral view emarginate on parameral side (Figs. 156­157). Aedeagus: Figs. 154­159. Body length 2.5 mm, pronotal width 0.50­0.53 mm. Known from El Salvador, at altitude of 2100 m (Fig. 387) ........................................... ................................................................................11. S. badia Gusarov, sp. n. (males) – Apex of median lobe in lateral view may be slightly bent paramerally (Figs. 141­142) but never clearly emarginate (Figs. 112­113; 141­142) ............................................ 12 12 Apex of median lobe in parameral view wide (Figs. 110­111). Aedeagus: Figs. 110­ 115. Body length 2.4 mm, pronotal width 0.49 mm. Known from Mexico, at altitude of 1300 m (Fig. 387) ............................... 7. S. tuberculicauda Gusarov, sp. n. (males) – Apex of median lobe in parameral view narrow (Figs. 139­140; 165­166) .............. 13 13 Apex of median lobe in parameral view with weak basal constriction (Figs. 139­140). Aedeagus: Figs. 139­148. Body length 2.2­2.8 mm, pronotal width 0.41­0.53 mm. Known from Mexico, at altitudes of 1700­2300 m (Fig. 387) ....................................... ........................................................................ 10. S. mexicana Gusarov, sp. n. (males) – Apex of median lobe in parameral view gradually widened basally, not constricted (Figs. 165­166). Aedeagus: Figs. 165­173. Body length 2.3­2.8 mm, pronotal width 0.48­0.54 mm. Known from Honduras, at altitude of 2000­2100 m (Fig. 387) ............ ............................................................................. 12. S. similis Gusarov, sp. n. (males) 14 Distal sclerites of internal sac have weak spicules (Fig. 87). Aedeagus: Figs. 83­88. Body length 2.3­2.5 mm, pronotal width 0.46­0.50 mm. Known from Mexico, at altitude of 1700­1900 m (Fig. 387) ............................. 5. S. fusca Gusarov, sp. n. (males) – Distal sclerites of internal sac have strong spicules (Figs. 99, 101). Aedeagus: Figs. 94­103. Body length 2.3­2.8 mm, pronotal width 0.46­0.50 mm. Known from Mexico and Honduras, at altitude of 1500­2400 m (Fig. 387) ............................................................................................................................6. S. castanea Gusarov, sp. n. (males) 15 Spermatheca S­shaped (Figs. 149, 160) .................................................................... 16 – Spermatheca L­, J­ or C­shaped (Figs. 32, 53, 62, 89, 104) ....................................... 18 16 Umbilicus facing proximally (Fig. 149). Body length 2.2­2.8 mm, pronotal width 0.41­0.53 mm. Known from Mexico, at altitudes of 1700­2300 m (Fig. 387) ............. ..................................................................... 10. S. mexicana Gusarov, sp. n. (females) – Umbilicus facing laterally (Figs. 160, 174). Two closely related species which cannot be distinguished by females ....................................................................................... 17 17 Body length 2.5 mm, pronotal width 0.50­0.53 mm. Spermatheca: Fig. 160. Known from El Salvador, at altitude of 2100 m (Fig. 387) .....................................................................................................................................11. S. badia Gusarov, sp. n. (females)

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