Thysdariella fieldiana, Hlavac, 2005

Hlaváč, Peter, 2005, Thysdariella, A New Genus of the Myrmecophilous Supertribe Clavigeritae (Coleoptera: Staphylinidae, Pselaphinae) from Madagascar, The Coleopterists Bulletin 59 (3), pp. 304-309 : 307

publication ID	https://doi.org/ 10.1649/741.1
DOI	https://doi.org/10.5281/zenodo.5410074
persistent identifier	https://treatment.plazi.org/id/362A87F0-A459-FFB7-5589-FC850016FA18
treatment provided by	Tatiana
scientific name	Thysdariella fieldiana
status	sp. nov.

Treatment

Thysdariella fieldiana View in CoL sp. n.

( Figs. 1–3 View Fig View Figs )

Etymology. referring to the Field Museum of Natural History, Chicago (FMNH) where the type of the new genus was held.

Material studied. HOLOTYPE, 1 male: (p) MADAGASCAR: Enakara , (11 km NW), Rés. Andohahela, 248349 S, 468499E, 800 m, rainforest, 17.XI.1992 / (p) FMNH #92-163 About FMNH , Winkler extraction of sifted litter (leaf mold, rotten wood), B. L. Fisher #492 (1–50), FIELD MUS. NAT. HIST. / (h) ‘‘ Apoderigerini’ ’ genus? (p) M. K. Thayer det. 1993 / (h) red label Thysdariella fieldiana sp. nov. (p) P.Hlaváč det, 2003. FMNH.

Description. Body ( Fig. 1 View Fig ) moderately covered with golden setae, shiny, light reddish brown; length 1.44 mm, maximum width of elytra at base 0.58 mm. Head elongate, about 1.57 times as long as wide, with two basal ventral fovea; eyes large; vertex long, slightly more that twice as long as eyes and slightly convergent, neck large, well separated from head by sharp constriction. Large flat plate on head venter well defined and readily visible dorsally. Maxillary palpi minuscule. Antennae relatively long, reaching elytral bases, scape slightly longer that pedicel, pedicel quadrate, segment III longest, cylindrical, about 7.7 times as long as pedicel and 1.85 times as long as apical segment. Pronotum 1.2 times as wide as long with large, deep, entire, median depression. Elytra about 1.5 times as long as pronotum, with large rounded humerae, lateral margin of elytra slightly diverging posteriorly, with long setae on sides, disc glabrous, outer apical corners of elytra with few long, bristle-like setae that replace trichomes. Legs long and slender, fore and hind legs unmodified, mid tibiae enlarged in the middle by two protuberances, with small preapical spur. Aedeagus as in Figures. 2, 3 View Figs .

Sexual dimorphism. Female unknown.

Habitat. The host is ant unknown. The only specimen was sifted from leaf mold or rotten wood.