Seeversiella castanea Gusarov

Gusarov, Vladimir I., 2003, A revision of the genus Seeversiella Ashe, 1986 (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 142, pp. 1-102 : 32-34

publication ID

https://doi.org/ 10.5281/zenodo.156420

DOI

https://doi.org/10.5281/zenodo.6274646

persistent identifier

https://treatment.plazi.org/id/62088784-C331-C751-E12E-76BAFE17FADE

treatment provided by

Plazi

scientific name

Seeversiella castanea Gusarov
status

 

6. Seeversiella castanea Gusarov View in CoL , sp. n. ( Figs. 90­104 View FIGURES 90 ­ 93 View FIGURES 94 ­ 104 )

Type material. Holotype ,, MEXICO: Chiapas: 2.8 km NW Las Piedrecitas, 5 km NW San Cristobal de las Casas, 2400 m, oak and pine forest litter (R.Anderson), 20.ix.1991 ( KSEM).

DS – distal sclerite of internal sac.

Paratypes: MEXICO: Chiapas: 10 specimens, same data as the holotype; 6 specimens, Yerbabuena Reserve, 2.1 km NW Pueblo Nuevo Solistahuacan, 2070 m, liquidambar forest litter (R.Anderson), 23.ix.1992; 6 specimens, 8.9 km E Rayon, 1500 m, cloud forest litter (R.Anderson), 19.ix.1991; HONDURAS: La Paz: 2, 4, Cord. Montecillos, 18 km NW La Paz, 14°21'N 87°47'W, 2000 m, pine and hardwood forest litter (R.Anderson), 21.viii.1994 (all ­ KSEM).

Diagnosis. Seeversiella castanea can be distinguished from other species of Seeversiella by having brown body; temples 1.5­1.7 times as long as eyes; glossy pronotum with weak isodiametric microsculpture; elytra longer or as long as pronotum; wings fully developed; tergum 8 with four pairs of macrosetae; the distinct shape of aedeagus ( Figs. 94­103 View FIGURES 94 ­ 104 ) and spermatheca ( Fig. 104 View FIGURES 94 ­ 104 ).

Seeversiella castanea can be distinguished from S. globicollis and the other similar species (3, 5, 7­8, 10­12) with long elytra and weak pronotal microsculpture by the combination of the following characters: distal sclerites of internal sac poorly sclerotized, not dentiform or hook­shaped and have strong spicules ( Figs. 99, 101 View FIGURES 94 ­ 104 ); apex of median lobe in lateral view not widened subapically ( Figs. 96­97 View FIGURES 94 ­ 104 ); spermatheca C­shaped with large umbilicus ( Fig. 104 View FIGURES 94 ­ 104 ).

Description. Length 2.3­2.8 mm, pronotal width 0.46­0.50 mm. Body brown to dark brown with lighter pronotum and elytra, legs brown.

In all external character states S. castanea is similar to S. globicollis , but differs in the shape of the aedeagus and spermatheca as described in the diagnosis.

In large males posterior angles of male tergum 3 projecting as spines up to 1 time as long as tergum 3 (measured medially), tergum 7 with medial carina along midline, the carina up to 2/3 as long as tergum length.

Aedeagus as in Figs. 94­103 View FIGURES 94 ­ 104 .

Spermatheca as in Fig. 104 View FIGURES 94 ­ 104 .

Distribution. Known from Mexico and Honduras ( Fig. 387 View FIGURE 387 ).

Natural History. Seeversiella castanea was collected in forest litter at altitude of 2000­2400 m.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

SubFamily

Aleocharinae

Genus

Seeversiella

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

SubFamily

Aleocharinae

Genus

Seeversiella

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

SubFamily

Aleocharinae

Genus

Seeversiella

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