Nothocyphon taeniatus, Zwick, Peter, 2015

Zwick, Peter, 2015, Australian Marsh Beetles (Coleoptera: Scirtidae). 7. Genus Nothocyphon, new genus, Zootaxa 3981 (3), pp. 301-359 : 323

Nothocyphon taeniatus , n. sp.

( Figs. 50, 51 , 167 )

Type material: 1 ♂ holotype, 2 ♂ paratypes: Mt. Gingera [35.58S, 148.78E] NSW 18.ii.1969 light trap S.Misko ( ANIC).

Habitus. Elongate oval, BL 2.5−2.7mm, BL/BW ~1.55. Yellowish brown, pronotum with darker centre. Each elytron with an arched brown band which is narrow behind the scutellum and widens laterally, meeting the elytral margin a little before midlength ( Fig. 167 ). Punctures on fore body fine, granular, the normal punctures on the elytra a little larger, denser, integument shiny. The semi-erect pilosity is yellowish. Appendages light brown, antennae moderately slender, flagellar segments about twice longer than apically wide.

Male ( Figs. 50, 51 ). T8 as for the group, S8 not observed. T9 with long straight apodemes which are relatively strong but the plate is completely membranous. Base of S9 not recognized, caudal portion with some setae, narrowly and deeply divided, each lobe shallowly excised between prominent lateral corners, edge irregular.

Penis slender, with narrow spatulate crested base. Trigonium with long almost parallel-sided apical portion, apex with asperities. Parameroids little longer than trigonium, tips triangular, apex blunt, sides connected to membranes. In front of the trigonium base appears an oval window (w) laterally delimited by raised crests (c) and some projecting sclerotized structures (p). The tegmen is a narrow arch, sides directed backward. Immediately after the bend each side divides into two large lobes. The medio-ventral lobe (mv) widens caudally and bears on its external edge huge widely spaced teeth; the unarmed apex tapers caudally. The dorsolateral lobe (dl) bears a long row of strong teeth along its outer edge before it tapers apically. Between the two lobes a band armed with many sharp hooks curves sideward and forward.

Female. Unknown.

Note. A close relative of N. nungatta and N. biserratus ; the present species stands out by its elytral pattern. The three related species differ mainly in the complex parameres.

Etymology. The name (Latin taeniatus , banded) alludes to the dark band on the elytron.

Figures

FIGURES 48 – 51. Nothocyphon lanceolatus - group, males. N. biserratus: 48, penis and parameres. — N. nungatta, holotype: 49, penis, parameres and S 9, superimposed, with enlarged details of armature on parameres. — N. taeniatus: 50, terminalia of paratype, ventral; 51, segment 9 and genitalia of holotype, superimposed. All to the same scale, except the insets in 49 which are to a different scale, the same for both. Apodemes of S 9 shown in black, sclerotized medio-ventral lobe of paramere (mv) stippled. Additional abbreviations: c, a lateral crest delimiting the window; dl, dorsolateral lobe of paramere; lp, lateral process; mp, medial process; p, projection from the window; w, window-like opening in front of the trigonium base.

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.