Seeversiella flavida Gusarov

Gusarov, Vladimir I., 2003, A revision of the genus Seeversiella Ashe, 1986 (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 142, pp. 1-102 : 90-93

publication ID

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

DOI

https://doi.org/10.5281/zenodo.6274695

persistent identifier

https://treatment.plazi.org/id/62088784-C377-C72C-E12E-778AFED2FCF6

treatment provided by

Plazi

scientific name

Seeversiella flavida Gusarov
status

 

27. Seeversiella flavida Gusarov View in CoL , sp. n. ( Figs. 19 View FIGURES 17 ­ 19 , 359­371 View FIGURES 359 ­ 362 View FIGURES 363 ­ 371 )

Type material. Holotype ,, COSTA RICA: San Jose/Cartago: Cerro Buenavista, km 89, Int. Amer. Hwy., 9°33'00"N 83°45'30"W, 3200 m, leaf litter (R.Anderson), 18.vi.1997 ( KSEM).

Paratypes: COSTA RICA: Cartago: 8 specimens, same data as the holotype; 6 specimens, Cerro Buenavista, 9°33'02"N [the latitude on the label (9°43'02"N) is incorrect] 83°45'14"W, 3300 m, subparano litter (R.Anderson), 15.ii.1998; 23 specimens, Cerro de la Muerte, Pan American Highway, km 89, 3300 m, elfin bamboo forest litter (R.Anderson), 10.ii.1996 (all ­ KSEM).

Diagnosis. Seeversiella flavida can be distinguished from other species of Seeversiella by having uniformly brownish yellow body; small eyes (temples 4.0­5.0 times as long as eyes); elytra much shorter than pronotum; reduced wings (shorter than elytra); by lacking medial emargination at the posterior margin of the male tergum 8 ( Fig. 359 View FIGURES 359 ­ 362 ); tergum 8 with three pairs of macrosetae; by the distinct shape of aedeagus ( Figs. 363­370 View FIGURES 363 ­ 371 ) and spermatheca ( Fig. 371 View FIGURES 363 ­ 371 ).

Seeversiella flavida differs from S. impressicollis , S. sulcicollis and S. microphthalma in having smaller body size; pronotal punctation not asperate; tergum 8 with three pairs of macrosetae; and by different shape of aedeagus ( Figs. 363­370 View FIGURES 363 ­ 371 ) and spermatheca ( Fig. 371 View FIGURES 363 ­ 371 ).

Seeversiella flavida differs from S. geostiboides in having pubescence in the lateral portions of pronotum directed towards the midline and obliquely posteriorly; tergum 8 with three pairs of macrosetae; wider apex of median lobe (in parameral view) ( Figs. 363­ 364 View FIGURES 363 ­ 371 ; 348­349); and different shape of the distal portion of spermatheca ( Figs. 371 View FIGURES 363 ­ 371 ; 355).

Seeversiella flavida differs from S. paramoana in having tergum 8 with three pairs of macrosetae; and obtuse apex of median lobe (in parameral view) ( Figs. 363­364 View FIGURES 363 ­ 371 ). Seeversiella flavida differs from S. adusta in having longer proximal portion of spermatheca ( Figs. 371 View FIGURES 363 ­ 371 ; 358).

Seeversiella flavida differs from S. minima in having tergum 8 with three pairs of macrosetae; proximal seta of the apex of paramere is approximately as long as the other three setae ( Fig. 370 View FIGURES 363 ­ 371 ); apex of median lobe in parameral view narrower ( Figs. 363­364 View FIGURES 363 ­ 371 ; 179­ 180); spermatheca with thin proximal portion and with umbilicus ( Figs. 371 View FIGURES 363 ­ 371 ; 184). Description. Length 2.2­2.5 mm. Body uniformly brownish­yellow to light brown. Head surface glossy, with fine and weak isodiametric microsculpture, with fine and poorly visible punctation. Temples 4.0­5.0 times as long as eyes. Antennal article 2 longer than 3, article 4 slightly transverse, 5­10 strongly transverse (ratio 1.6­2.0).

Pronotum slightly transverse, 1.2 times as wide as head, width 0.39­0.43 mm, length 0.36­0.39 mm, width to length ratio 1.1, surface glossy, with fine isodiametric microsculpture, with fine punctation, distance between punctures equals 2­3 times their diameter. Elytra wider and much shorter (measured from humeral angle) than pronotum (pronotal length to elytral length ratio 1.4), 1.7 times wider than long, glossy, with poorly visible microsculpture, with fine and asperate punctation, distance between punctures equals 1­ 1.5 times their diameter, punctures stronger than on pronotum. Wings reduced to short vestiges, shorter than elytra.

Abdominal terga glossy, with microsculpture consisting of strongly transverse meshes or transverse waves and with fine punctation, on terga 3­5 distance between punctures equals 1­3 times their diameter; on tergum 7 distance between punctures equals 3­7 times their diameter. Apical margin of tergum 7 without white palisade fringe. Tergum 8 with three pairs of macrosetae ( Figs. 359, 361 View FIGURES 359 ­ 362 ).

In males lateral portions of posterior margin of tergum 3 extending as short and obtuse projections ( Fig. 19 View FIGURES 17 ­ 19 ), up to 1/3 as long as tergum (measured medially); tergum 7 in front of posterior margin with medial carina up to half as long as tergum; posterior margin of tergum 8 without clear medial emargination ( Fig. 359 View FIGURES 359 ­ 362 ).

Aedeagus as in Figs. 363­370 View FIGURES 363 ­ 371 .

Spermatheca as in Fig. 371 View FIGURES 363 ­ 371 .

Distribution. Known from Cerro de la Muerte, Costa Rica ( Fig. 389 View FIGURE 389 ).

Natural History. Seeversiella flavida was collected in leaf litter at altitude of 3200­ 3300 m.

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