New species of Moluccan trichaline net-winged beetles, with remarks on the phylogenetic position and distribution of Schizotrichalus (Coleoptera: Lycidae: Metriorrhynchinae)
Author
Bocek, Matej
Author
Adamkova, Kristyna
text
Zootaxa
2019
2019-06-25
4623
2
341
350
journal article
26407
10.11646/zootaxa.4623.2.8
db2b3bd4-2e27-4918-8fff-226b303c65b9
1175-5326
3255499
EEDC9982-ED9C-40BD-8584-CDADA572DDE
Schizotrichalus halmaherensis
sp. nov.
Figs 2–3, 6–7, 10, 13–14
urn:lsid:zoobank.org:act:
C82DA8EC-26B7-4623-BF8A-D1102ABC87F2
Material examined.
Holotype
. Male (A02461;
Fig. 2
),
Indonesia
,
Halmahera, SE
slope of
Gn. Jailolo
,
460 m
,
1°4.54’N
,
127°26.85’E
(
LMBC
)
.
Paratypes
.
1 female
(
A02428
,
Fig. 3
),
Indonesia
,
Halmahera
, road
Weda
to
Tobaru
,
190 m
,
0°19.58’N
,
127°49.68’E
,
2 males
(A02465–66), the same locality as the holotype (
LMBC
)
.
Diagnosis.
Schizotrichalus halmaherensis
is the only Halmaheran species of the genus and superficially resembles
Eniclases moluccanus
, possibly a member of the same local mimetic complex.
S. halmaherensis
differs from
E. moluccanus
in characters used for the generic definition: the presence of five pronotal areoles (
Figs 5–8
), characteristic prolonged, slender phallus without extensive membranous sac (
Figs 10, 12
) and the males of
S. halmaherensis
have flabellate antennae (
Figs 2–3, 13–14, 16
). Papuan congeneric,
S. nigrescens
,
differs from
S. halmaherensis
in serrate male antennae and uniform dark brown coloration (
Waterhouse 1879
,
Bocak 2002
).
Description.
Male. Body length
9.5–11.2 mm
. Head, antennae and legs completely black, pronotum orange, almost half of elytra orange with sharp transition between brightly colored humeral half and black colored apex. Head small with hemispherically prominent eyes, their diameter 1.03 times interocular distance, antennomeres 3–10 flabellate with long lamellae (
Fig. 13
). Pronotum trapezoidal, wider than long, with five areoles and two characteristic bulges on each of its lateral margins (
Figs 6–7
). Elytra with nine costae at humeri, primary costa 1 short, secondary costae well-developed, elytral cells subquadrate, regular. Phallus long, very slender, mostly membranous, with cuplike apex, phallobase without visible membranous sac. Female. Antennae acutely serrate (
Fig. 14
).
Distribution and diversity.
Halmahera Island.
Measurements.
BL
9.5–11.2 mm
, EL
7.8–8.2 mm
, WH
3.3–3.5 mm
, PL
1.79–1.84 mm
, PW
2.47–2.53 mm
, Edist
0.74 mm
, Ediam
0.76 mm
.
Etymology.
The specific name refers to Halmahera, the
type
locality of this species.