Eurycyphon fulvus Watts, 2011

Zwick, Peter, 2015, Australian Marsh Beetles (Coleoptera: Scirtidae). 8. The new genera Cygnocyphon, Eximiocyphon, Paracyphon, Leptocyphon, Tectocyphon, and additions to Contacyphon de Gozis, Nanocyphon Zwick and Eurycyphon Watts, Zootaxa 3981 (4), pp. 451-490 : 466

Eurycyphon fulvus Watts, 2011

( Figs. 41, 42 )

Material studied. 1♂ paratype: Cement Ck 30/1 [from the publication: Vic. Cement Creek 5 km N Warburton 30/ 1/09 CHS Watts] ( SAMA).

Eurycyphon fulvus is immediately recognized by its bicolourous elytra. The pale part is completely transparent, mesonotum and alae clearly visible through the elytra. The surface punctures are finer and denser than in the unicolourous members of the group, only E. falcatus comes close.

Male. Segments 8 and 9 are shown in figure 46 of Watts (2011), E. barringtoni ( Figs. 43–48 ) is similar. From the tightly convoluted dark apex of the tegmen projects a curved tooth with minute setae on the convex face, a similar larger hook is present in E. barringtoni (compare Figs. 42, 48 ). The complex internal structure of the paramere apex remains unknown. In E. barringtoni the trigonium ends in lateral points between which is a minute tongue ( Fig. 47 ) while in E. fulvus the tip of trigonium is rounded and bears a large bifid tongue ( Fig. 42 ). A similar tongue occurs in E. thunguttii and E. falcatus , see there for distinction.

Figures

FIGURES 41 – 48. Eurycyphon spp., males, I. E. fulvus Watts: 41, ventral view of S 9 (part), tegmen and penis; 42, the same, apical portion of penis and tegmen, enlarged. E. barringtoni, n. sp.: 43, T 8; 44, T 9; 45, S 8; 46, S 9; 47, ventral view of tegmen and penis; 48, the same, apical portion, enlarged. 43 – 46 to the same scale. pa, pala; pd, parameroid; pe, paramere; st, stylus; tr, trigonium.