Seeversiella liliputana Gusarov

Gusarov, Vladimir I., 2003, A revision of the genus Seeversiella Ashe, 1986 (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 142, pp. 1-102 : 28-29

4. Seeversiella liliputana Gusarov , sp. n. ( Figs. 68­78 )

Type material. Holotype ,, UNITED STATES: Arizona: Cochise Co.: Huachuca Mts., Bear Saddle, 8100' (A.Smetana), 5.viii.1979 ( CNCI).

Additional material. UNITED STATES: Arizona: Cochise Co.:, same data as the holotype ( CNCI).

Diagnosis. Seeversiella liliputana can be distinguished from other species of Seeversiella by having brown body; temples 2 times as long as eyes; pronotum without microsculpture; elytra as long as pronotum; tergum 8 with four pairs of macrosetae, and the distinct shape of aedeagus ( Figs. 72­77 ).

Seeversiella liliputana differs from S. sonomotoides in having smaller median lobe of aedeagus with shorter apex ( Figs. 72­75 ; 58­61).

Description. Length 2.4 mm, pronotal width 0.41mm. Body brown, elytra and antennae light brown, legs and mouthparts brownish yellow.

In all character states S. liliputana is very similar to S. sonomotoides , but differs in the shape of the median lobe as described in the diagnosis.

In the only known male specimen the posterior angles of tergum 3 not projecting, tergum 7 without carina or tubercle.

Aedeagus as in Figs. 72­77 .

One female specimen, externally similar to the holotype of S. liliputana , was collected together with this holotype. However that female specimen has the spermatheca like in S. sonomotoides ( Figs. 78 , 62 ) and may belong to the latter species.

Distribution. Known from the Huachuca Mountains, Arizona ( Fig. 386 ).

Natural History. Seeversiella liliputana was collected at altitude of 2470 m.

Figures

FIGURE 386. Geographical distribution of Seeversiella in America north of Mexico.

FIGURES 68 ­ 71. Abdominal segment 8 of Seeversiella liliputana Gusarov, sp. n. (68 ­ 69, holotype; 70 ­ 71, possible female of S. liliputana from Bear Saddle, Arizona). 68 – male tergum 8; 69 – male sternum 8; 70 – female tergum 8; 71 – female sternum 8. Scale bar 0.2 mm.

FIGURES 72 ­ 78. Genitalia of Seeversiella liliputana Gusarov, sp. n. (72 ­ 77, holotype; 78, possible female of S. liliputana from Bear Saddle, Arizona). 72 – median lobe, parameral view; 73 – apex of median lobe, parameral view; 74 – median lobe, lateral view; 75 – apex of median lobe, lateral view; 76 – details of internal sac retracted into median lobe, lateral view; 77 – apex of left paramere; 78 – spermatheca. Scale bar 0.2 mm (72, 74, 76), 0.1 mm (73, 75, 77 ­ 78).

FIGURES 58 ­ 67. Genitalia of Seeversiella sonomotoides Gusarov, sp. n. (paratypes from Carr Canyon, Arizona). 58 – median lobe, parameral view; 59 – apex of median lobe, parameral view; 60 – median lobe, lateral view; 61 – apex of median lobe, lateral view; 62 – spermatheca; 63 – details of internal sac retracted into median lobe, lateral view; 64 – apex of left paramere; 65 – right hook of internal sac; 66 – copulatory piece, lateral view; 67 – everted internal sac, parameral view. Scale bar 0.2 mm (58, 60, 63, 67), 0.1 mm (59, 61 ­ 62, 64 ­ 66).