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
Author
Zwick, Peter
text
Zootaxa
2015
3981
4
451
490
journal article
10.11646/zootaxa.3981.4.1
15c3bf52-4481-4a75-8643-7c919bdde6c4
1175-5326
235846
EF71D83B-17B4-49CA-826E-D3A8E7979750
Key to males of
Eurycyphon
1 Dorsal side strikingly bicolourous......................................................................... 2
1' Dorsal side unicolourous................................................................................ 3
2 Base strikingly lighter than rest of elytra........................................................
E. fulvus
Watts
2' Fore body bright red, elytra dark...........................................................
E. tomweiri
n. sp.
3 Head and pronotum with coarse granular punctures; terminalia
Figs. 68–73
...........................
E. perlatus
n. sp.
3' Normal fine punctures on entire surface.................................................................... 4
4
Pala
and distal part of penis of similar length, parameroids longer than trigonium (e.g.,
Figs. 63
,
75
). Plate of T8 transverse, short stout pegs along caudal edge (
Figs. 61, 65
)............................................................. 5
4'
Pala
2 or more times longer than the trigonium which is longer than the parameroids (e.g.,
Figs. 41
,
49
). No pegs along caudal edge of T8........................................................................................... 6
5 Parameroids ending in a long curved spine; trigonium with long apical process (
Fig. 63
)...............
E. castaneus
n. sp.
5' Trigonium and parameroids without long pointed processes (
Fig. 75
).................................
E. parvus
n. sp.
6 Trigonium spherical, with 3 horn-like processes (
Fig. 60
).........................................
E. tricornis
n. sp.
6' Trigonium parallel-sided, no horns, only a delicate tongue directed ventrad from apex (e.g.,
Fig. 41
).................... 7
7 Each paramere ventrally with a large triangular sclerite, the paramere apex is a slender plate with serrate ventral edge (
Fig. 51
)........................................................................................
E. aquilus
Watts
7' No separate ventral subterminal sclerites on parameres....................................................... 8
8 Paramere ending in two hooks curved in opposite directions (
Figs. 52, 55
)...........................
E. falcatus
n. sp.
8' Apex of paramere a compact convoluted body (e.g.,
Figs. 48
,
50
)............................................... 8
9 Penis waisted, front of pala wide, a strong hook projects from paramere apex (
Figs. 47, 48
)..........
E. barringtoni
n. sp.
9'
Pala
lanceolate, front narrow, tegmen without projecting tooth at apex (
Figs. 49, 50
)...................
E. thunguttii
n. sp.