Nothocyphon lindensis

Zwick, Peter, 2015, Australian Marsh Beetles (Coleoptera: Scirtidae). 7. Genus Nothocyphon, new genus, Zootaxa 3981 (3), pp. 301-359 : 306-307

Key to males of the lindensis -group

1 A large hollow cone-like spine between penis and S9 (e.g., Figs. 12 , 19 ). Yellow or light brown beetles with a brown spot close to the suture near the top of elytra ( Fig. 165 ), rarely more extended maculae ( Fig. 166 )............................... 2

1' Groups of slender spines between penis and S9 (Figs. 26, 29). Brown beetles...................................... 5

2 Parameres enveloping the penis, one or two huge curved spines along their medioventral edge ( Figs. 10, 11 )............. 3

2' Parameres slender, lying alongside penis, not surrounding it.................................................... 4

3 Apex of trigonium entire, with spines in irregular dorsoventral rows ( Figs. 8−10 )................ N. lindensis (Blackburn)

3' Trigonium forked, the hollow spine visible between the short branches ( Figs. 12, 13 ).................... N. ypsilon n. sp.

4 Trigonium truncate, short, with curved lateral horns ( Fig. 18 )....................................... N. taurus n. sp.

4' Trigonium deeply excised, each lobe medially with many spinules ( Fig. 24 )......................... N. banksiae n. sp.

5 Notch in trigonium deeper than wide. Each lobe of S9 with a rounded notch. A single triangular patch of spines, parameres with strong teeth (Fig. 26).............................................................. N. donnabuangi n. sp.

5' Notch of trigonium shallower, wider than deep. Caudal lobes of S9 not notched. Paired spinule patches, parameres with fine teeth (Fig. 29)........................................................................... N. imitator n. sp.

Figures

FIGURES 8 – 13. Nothocyphon lindensis - group, male genitalia. N. lindensis: 8, ventral view of cleared protracted genitalia; 9, the same, dorsal view; 10, oblique ventral view of the erect genitalia, trigonium deflexed. — N. ypsilon: 11, ventral view of tegmen, penis and S 9; 12, penis tip, ventral, enlarged; 13, dorsal view of cleared protracted genitalia; 8, 9, 11, 13 to the same scale, 10 not to scale. Abbreviations: hs, hollow spine; pa, pala; pd, parameroid; pe, paramere; te, tegmen; tr, trigonium.

FIGURES 17 – 24. Nothocyphon lindensis - group, N. taurus (17 − 20) and N. banksiae (21 − 24). 17, dorsal view of male terminalia as extracted from abdomen, superimposed components seen by transparency; semi-diagrammatic, setae of S 8 and microtrichia on T 8 not shown; 18, tips of penis and parameres of another specimen, ventral view; 19, T 9 and S 9 superimposed, caudal edge of T 9 and base of S 9 are transparent, the hollow spine lies between them; 20, prehensor; 21, T 8 and the (inverted) S 8; 22, T 9; 23, S 9; 24, dorsal view of penis and superimposed tegmen and parameres. 18 − 20 and 21 − 23 to the same scales, respectively. Abbreviations: aT 9, apodeme of T 9; hs, hollow spine; pd, parameroid; pe, paramere; tr, trigonium.

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.