Australian Marsh Beetles (Coleoptera: Scirtidae). 7. Genus Nothocyphon, new genus
Author
Zwick, Peter
text
Zootaxa
2015
3981
3
301
359
journal article
10.11646/zootaxa.3981.3.1
13ca0acb-0db1-4ee9-bb85-a90cdc65dcf3
1175-5326
240978
34F39733-E55C-4695-8749-E6811F675740
Nothocyphon horridus
,
n. sp.
(
Figs. 143–148
)
Type
material:
1♂
,
holotype
,
3♂
,
paratypes
:
37.43S
145.41E
VIC
Mt Donna Buang
1200m
N of Warburton 811
26.Jan–11.Feb. 1987
A.Newton & M.Thayer \ wet scler. Noth. cunn.
FMHD
#87 216 flight intercept (window) trap (
ANIC
).
Habitus
. Oval, BL
2.5–2.6mm
, BL/BW 1.6. Brown, head and centre of pronotum dark brown, margins diffusely reddish. Elytra with narrow dark brown sutural seam from the scutellum to near elytron midlength where the band curves outward and forms an anteriorly open semicircle ending at the elytral margin. The granular punctures on the forebody are fine, dense on the head, widely spaced on the pronotum. The dense normal punctures on the elytra are larger but comparatively fine. The semi-erect pilosity is light brown. The short antenna reaches the basal fifth to sixth of the elytron. The base is unmodified, the distal segments are about twice as long as wide.
Male
. Middle of last sternite projecting a little, contour angular. Segments 8 and 9 as for the genus (
Figs. 143– 146
), except the Y-shaped S8 unusually large. Base of S9 not visible. Tegmen and parameres (
Fig. 147
) exceptionally strongly sclerotized, of unusual shape. Two separate basally slightly scooped curved sclerites converge, meet, and then widen and diverge again. The short apical portion of each bears 3 massive teeth between which rise fine hair-like structures. At the narrow meeting point each paramere has a medial extension connected to its counterpart by a membrane with some anteriorly directed paramedian spine-like sclerite. At this point they seem to be connected to membranes around the penis, details are unknown.
Penis (
Fig. 148
) long, slender, with parallel sides. The front of the pala is anteriorly shallowly excised and almost twice as wide as the caudal portion. The parameroids and the trigonium originate in the distal third. The trigonium is strongly sclerotized, from a transverse bracket-like base originates a long slender gently downcurved tip. The narrow apically slightly spatulate parameroids are straight and longer than the trigonium.
Female
. Unknown.
Note
. The species was taken together with
N. donnabuangi
and
N. imitator
whom it resembles in the brown elytral band. It differs by the very fine widely spaced pronotal granula, and of course by the exceptional genitalia.
Etymology
. Latin
horridus
, awful, an allusion to the powerful claw-shaped parameres.