Nothocyphon multidentatus, Zwick, Peter, 2015

Zwick, Peter, 2015, Australian Marsh Beetles (Coleoptera: Scirtidae). 7. Genus Nothocyphon, new genus, Zootaxa 3981 (3), pp. 301-359 : 320

Nothocyphon multidentatus , n. sp.

( Figs. 46, 47 )

Type material: 1♂ holotype: Launceston Tas. Lea \ Cyphon 8805 Tasmania ( SAMA).

Paratypes: 1♂ on roof of tent with light inside Rav. de Casoars [34.6565S, 136.5773E], K.I. [Kangaroo Island], 24.Oct 1951 G.F.Gross; 1♂: Kangaroo I. S.A. \ prob. Cyphon near adelaidae Bl.; 1♂: SA 13k W Meadows [35.1790S, 138.7629E] 9/12/96 C.H.S.Watts (all SAMA).

Habitus. Size 3.0− 3.2mm, BL/BW ~1.65. The elytra are dark, with some still darker fascia that seems to resemble N. taeniatus ( Fig. 167 ).

Male ( Figs. 46, 47 ). Generally similar to N. serratipenis , trigonium and parameres differ. Trigonium wider, the toothed ridges are connected to the rough field at the penis apex and run along the sides rising high in front and then declining abruptly. The ridges carry numerous slender hooks, the longest ones near the highest point. The parameroids are curved around the trigonium and partly concealed by it in ventral view. Tegmen with thin basal sclerite and complexly folded ventrolateral paramere lobes that seem to wrap around the pala. There is no armature, also no spur. Dorsally, some transparent thin sclerite extends caudad from the basal sclerite of the tegmen, branching at some distance from it. The branching is strengthened by a sclerotized U-shaped bracket (arrow in Fig. 47 ).

Female. Unknown.

Note. The few specimens were taken in South Australia and northern Tasmania, the presently known range is disjunct. At first glance the genitalia are similar to N. serratipenis from which it can be distinguished by the different position of the toothed ridges on the penis, the lack of any armature on the parameres and the presence of the U-shaped bracket in N. multidentatus .

Etymology. The multitude of slender teeth on the trigonium is reflected by the name (the Latin adjective, multidentatus , with many teeth).

Figures

FIGURES 41 – 47. Nothocyphon lanceolatus - group, males. N. serratipenis: 41, T 8, S 8, tegmen with parameres, T 9 and S 9, superimposed; 42, penis, ventral view; 43, penis apex of same male, from National Park; 44, same, specimen from Hobart; 45, dorsal pattern. — N. multidentatus: 46, segments 8 and 9, superimposed; 47, tegmen with parameres and penis; the arrow points at the sclerotized bracket of the parameres. 41, 42 and 43, 44 to the same scales, respectively; 45 not to scale.

FIGURES 165 – 173. Habitus of Nothocyphon spp.: 165, N. lindensis; 166, N. taurus; 167, N. taeniatus; 168, N. denticulatus; 169, N. donnabuangi; 170, N. imitator; 171, N. frater; 172, N. frater, lateral; 173, N. taurus, lateral. To similar sizes, not to scale.