Ypsiloncyphon rugosus, Zwick, Peter, 2014

Zwick, Peter, 2014, Australian Marsh Beetles (Coleoptera: Scirtidae). 6. Genera Calvarium Pic, Papuacyphon Zwick, and Ypsiloncyphon Klausnitzer, Zootaxa 3846 (1), pp. 1-41 : 22

publication ID	https://doi.org/ 10.11646/zootaxa.3846.1.1
publication LSID	lsid:zoobank.org:pub:97D4A04A-D75E-45CC-8A70-3EB3A4E94D9B
DOI	https://doi.org/10.5281/zenodo.6126833
persistent identifier	https://treatment.plazi.org/id/0242C964-FCD9-4AFF-BACF-D5AC18405494
taxon LSID	lsid:zoobank.org:act:0242C964-FCD9-4AFF-BACF-D5AC18405494
treatment provided by	Plazi
scientific name	Ypsiloncyphon rugosus
status	sp. nov.

Treatment

Ypsiloncyphon rugosus , n. sp.

( Figs. 70−74 View FIGURES 70 – 74 )

Type material. Holotype ♂: “ INDONESIA, Western Papua, Batanta I., Waridor river, light trap, 18.I.2013 S00.8649°, E130.52206° leg. Róbert Horváth“ ( HNHM).

Habitus. BL 1.8mm, BL /BW ~1.5. Oval, convex. Dorsal face shining, black, semi-erect short brownish pilosity. Punctures moderately large and dense, granular on head and pronotum, normal on elytra.

Male. T8 wide, caudal margin rounded, with few short setae. Apodemes not distinctly longer than plate, curved, anteriorly narrowed, pointed ( Fig. 70 View FIGURES 70 – 74 ). T9 narrower, the bare plate soft, apparently transverse, apodemes many times longer than plate, several times longer than apodemes of T8, anteriorly attenuated, thread-like ( Fig. 71 View FIGURES 70 – 74 ). The thread-like apices of blades of S9 projected from the abdominal tip. Blades similar between them, unusually narrow, with undulating margin, anteriorly connected for a short distance, no well defined capulus ( Fig. 72 View FIGURES 70 – 74 ). Penis long, slender, the wide parameroids a little longer than the non-constricted trigonium whose upcurved blunt tip is distinctly sclerotized. Pala long, narrow, anteriorly not widened, downcurved. Outer face of parameroids some distance before tip covered with sharp triangular asperities, rough ( Fig. 73 View FIGURES 70 – 74 ). Tegmen a long narrow rod with fine median line, caudal third divided into slender parameres, a faint hooklet present before the membranous apex ( Fig. 74 View FIGURES 70 – 74 ).

Female. Unknown.

Notes and etymology. A very distinctive species. The rough surface of the parameroids, the subequal very narrow blades of S9 as well as the long, undivided section of tegmen are unique. The Latin word rugosus , rough, describes the parameroid surface.