Revision of the Oriental tiger beetle genus Heptodonta Hope, 1838 (Coleoptera: Cicindelidae)
Author
Görn, Sebastian
text
Zootaxa
2020
2020-11-06
4875
1
1
62
journal article
7896
10.11646/zootaxa.4875.1.1
a75d6e42-221a-4df9-9a7d-5f33dbff6a56
1175-5326
4578779
278200CE-E16F-45B4-9A89-60C2052415C7
Heptodonta wiesneri
sp. nov.
Figs. 62–67
Type
locality.
Philippines
:
Negros
.
Type material.
Holotype
:
♂
in JWCW, labelled: “
PHILIPPINES
, VII.85, /
Negros oriental
, / leg.
Romeo
Lu- mawig” [yellow margin, printed] // “melanopyga / Schaum / det.
J. Wiesner
1985” [handwritten]
.
Paratypes
(2):
1 ♂
in JWCW,
1 ♂
in SMNS: “
PHILIPPINES
, 8.VI.85, /
Negros oriental
, / leg.
Romeo Lumawig
” [yellow margin, printed] // “
Heptodonta
/ melanopyga / Schaum / det.
J. Wiesner
1985” [handwritten]. All type specimens labelled: “
HOLOTYPE
(or
PARATYPE
respectively) /
Heptodonta
/ wiesneri
sp. nov.
/ ded. Sebastian Görn 2020” [red, printed]
.
Diagnosis.
Resembling bluish-coloured specimens of
H. melanopyga
, but aedeagus compact and triangular shaped, with distinctly Y-shaped sclerite. Further, distinguished by the rather smooth, globular pronotum with laterobasal curvature, and the labrum slightly triangular in its median part. In contrast to
H. mindoroensis
, femora without extended dark apical areas. Due to the lack of mediolateral and anteroapical elytral impressions, it is easily distinguishable from
H. abasileia
sp. nov.
,
H. nigrosericea
, and
H.
halensis
sp. nov.
Etymology.
This new species is dedicated to Jürgen Wiesner for his comprehensive support with material and knowledge.
Description.
Body size: Length 11.6–12.0 mm (without labrum), width
3.7–3.9 mm
(
Figs. 62–63
). Female unknown.
Dorsal surface of head iridescent bluish-green with yellow-orange lustre on frons and occiput, temples blue. Frons irregularly rugose. Vertex median with parallel longitudinal striations converging in transition to the orbital plates. Orbital plates with shallow longitudinal striae, two setae on each side. Occiput with transverse grooves, anteromedian irregularly rugose. Genae glabrous and shallowly grooved, violet-blue posterior and yellowish-green anterior. Clypeus glabrous, iridescent bluish-green, with two dark-blue frontal impressions. Labrum pale-testaceous, with four setae, wider (
1.43–1.50 mm
) than long (
0.61–0.65 mm
) (
Fig. 64
), slightly antero-triangular, five apical teeth, and one lateral tooth on each side, acute median tooth with a dark tip, third apical teeth reduced. Mandibles pale-testaceous on the lateral and rufous-testaceous on the inner side, teeth dark reddish-brown to black. Labial and maxillary palpi pale-testaceous with dark-brown apices of terminal palpomeres. Antennae slender, extending back over the middle of the elytra, dark brown, scape and antennomere 3 dark-testaceous on underside, pedicel testaceous at base, scape with a single apical seta, antennomeres 3–4 with few scattered setae, antennomeres 5–11 finely and evenly pubescent.
Thorax entirely glabrous. Pronotum with irregularly rugose orange spot on disc, bordered yellow, followed by iridescent bluish-green, and finally a blue lateral margin, slightly longer (
2.45–2.55 mm
) than wide (
2.31–2.41 mm
), rather shallow transverse grooves, running concentrically on disc, strong median line, pronounced anterior and posterior sulci, anterior lobe wider than posterior, lateral margins of the median lobe slightly converging to the base, but sloping stronger posteriorly, giving the median lobe a specific globular shape. Episterna violet-blue, metepisternum with blue-green lustre. Prosternum, posterior mesosternum, metasternum, and epimera iridescent yellowish-green to bluish-green.
FIGURES 55–61.
Heptodonta mindoroensis
Cassola, 2000: 55
, 57, 59–61—♂, Philippines, Mindoro, Mt. Halcon (JWCW): 55—habitus, 57—head, 59—lateral body, 60—aedeagus in left lateral aspect, 61—aedeagus in right lateral aspect; 56, 58—♀, holotype, Philippines, Mindoro, Mt. Halcon (RMNH): 56—habitus, 58—head. Scales: 55–59 = 1 mm, 60–61 = 0.5 mm.
FIGURES 62–67.
Heptodonta wiesneri
sp. nov.
, Philippines, Negros oriental (JWCW): 62, 64–67—♂, holotype: 62—habitus, 64—head, 65—lateral body, 66—aedeagus in left lateral aspect, 67—aedeagus in right lateral aspect; 63—habitus, ♂, paratype. Scales: 62–65 = 1 mm, 66–67 = 0.5 mm.
Elytra elongate, length
7.1–7.5 mm
, slightly dilated laterally, maximal width posterior, iridescent colouration bronze along the sutures from base to posterior declivity, yellow transition to bluish-green sublateral area, passing to blue margin and violet juxtaepipleural area, discal and juxtahumeral impression moderate, as well as impression on posterior declivity, apical impression deep, basodiscal convexity and posterior gibbosity moderate; deep blue punctures irregularly distributed, large in front, decreasing in size to apex, particularly anteriorly and along the sutures, slightly fused to transverse lines.
Coxae dark-testaceous with iridescent green lustre, pro- and mesocoxae anteriorly, metacoxae laterally densely covered with long white setae. Trochanters and femora testaceous. Femora distally sparsely black-coloured dorsoapically and on apical margin, black colouration slightly extended at metafemoral apex. Tibiae for the most part metallic-black, but testaceous in proximal half of protibiae, proximal third of mesotibiae and proximal apex of metatibiae. Tarsi metallic-black with a slight violet lustre. Claws rufous-testaceous.
Abdominal sternites glabrous (apart from few long setae at posterior margins, and some minute setae on posterior margin of sternite 5), dark-brown with violet-blue reflections, anal sternite almost completely brown (
Fig. 65
).
Aedeagus robust, length
2.26–2.32 mm
, ventral side straight, also anterodorsally and medioposterodorsally straight and ascending, forming a generally triangular shape; straight, converging apex with short round tip, short and stout base steeply sloping. Inner sac in left lateral aspect with specifically y-shaped median sclerite (
Figs. 66–67
).
Variability.
Pronotal and aedeagal shape showing some variation without losing the species-specific characters.
Distribution.
Central
PHILIPPINES
(Negros).
Remarks.
Together with the three
type
specimens, Romeo Lumawig collected a specimen of
H. melanopyga
, showing the same specific colour pattern of
H. wiesneri
sp. nov.
, which is unique within
H. melanopyga
.