Tomoglossa floridana Gusarov, 2002

Gusarov, Vladimir I., 2002, A revision of Nearctic species of the genus Tomoglossa Kraatz, 1856 (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 30, pp. 1-19 : 15-16

5. Tomoglossa floridana Gusarov , sp. nov. ( Figs. 33 , 43­46 )

Type material: holotype ,, UNITED STATES: Florida: Highlands Co., W Archbold Biological Station , [27º11'N 81º20'W], “ sphagnum ex pond ”, 21.i.1975 (W. Suter) ( FMNH) .

Diagnosis. Compared to all other Nearctic species of Tomoglossa , T. floridana is the smallest and has shorter antennae with more transverse articles 4­10 ( Figs. 29­33 ). Tomoglossa floridana also differs from T. decora and T. ornatella in having different shape of spermatheca (especially the umbiculus) ( Figs. 45 , 27 , 36 ) and smaller female accessory sclerite ( Figs. 46 , 28 , 37 ).

Description. Length 1.6 mm. Body and appendages reddish yellow; head and abdominal tergum VI dark brown; elytra brownish yellow with apical third yellow.

Head transverse, surface on disk glossy, with weak reticulate microsculpture, with strong punctures, distance between them equal to their diameter. Antennal article 2 longer than article 3, 4­10 transverse, last article shorter than 9 and 10 combined ( Fig. 33 ).

Pronotum transverse, width to length ratio 0.37 mm: 0.27 mm, wider than head (pronotum width to head width ratio 0.37 mm: 0.30 mm); surface glossy, with weak reticulate microsculpture, puncturation finer than on head, distance between punctures equals their diameter. Elytra measured from humeral angle shorter than wide (0.33 mm: 0.37 mm), surface glossy, with weak reticulate microsculpture, puncturation finer and denser than on pronotum, distance between punctures equals ½­1 their diameter.

Abdominal terga glossy, without microsculpture, and with fine and sparse puncturation, puncturation becoming finer towards abdominal apex, on terga III­V distance between punctures within rows equal to their diameter and between rows 2­3 times their diameter, on tergum VI distance between punctures within rows equal to 1­2 times their diameter and between rows 2­4 times their diameter, on tergum VII distance between punctures within rows equal to 2­3 times their diameter and between rows equal to 4­6 times their diameter. Tergum VII with white edge.

Spermatheca with wide umbilicus ( Fig. 45 ). Female accessory sclerite small ( Fig. 46 ). Distribution. Known only from Florida ( Fig. 47 ).

Natural History. According to the label, the holotype specimen was collected in moss (Sphagnum) from a pond.

Figures

FIGURE 47. Geographical distribution of Nearctic Tomoglossa. T. ornatella (Casey) (c), T. improvisa (Casey) (⌂), T. decora (Casey) (z), T. arizonica Gusarov, sp. nov. (S), T. floridana Gusarov, sp. nov. („).

FIGURES 29 ­ 33. Antennae of Nearctic Tomoglossa. 29, T. ornatella (Casey) (lectotype); 30, T. improvisa (Casey) (lectotype); 31, T. decora (Casey) (Pennsylvania); 32, T. arizonica Gusarov, sp. nov. (holotype); 33, T. floridana Gusarov, sp. nov. (holotype). Scale bar 0.1 mm.

FIGURES 43 ­ 46. Details of Tomoglossa floridana Gusarov, sp. nov. (holotype). 43, female tergum VIII; 44, female sternum VIII; 45, spermatheca; 46, female accessory sclerite. U ­ umbilicus. Scale bar 0.2 mm (43 ­ 44), 0.1 mm (45 ­ 46).

FIGURES 21 ­ 28. Genitalia and terminalia of Tomoglossa decora (Casey) (Vermont (21 ­ 25), Pennsylvania (26 ­ 28 )). 21, median lobe of aedeagus, lateral view; 22, median lobe of aedeagus, ventral view; 23, internal sac of aedeagus, in packed state; 24, deeply concave sclerite of internal sac; 25, copulatory piece; 26, spermatheca; 27, left portion of female sternum IX; 28, female accessory sclerite. U ­ umbilicus. Scale bar 0.1 mm.

FIGURES 34 ­ 37. Details of Tomoglossa ornatella (Casey) (lectotype). 34, female tergum VIII; 35, female sternum VIII; 36, spermatheca; 37, female accessory sclerite. U ­ umbilicus. Scale bar 0.2 mm (34 ­ 35), 0.1 mm (36 ­ 37).