Revision of the Derbidae of Seychelles Islands (Insecta: Hemiptera: Fulgoromorpha)
Author
Löcker, Holger
Author
Löcker, Birgit
Author
Holzinger, Werner E.
text
Zootaxa
2009
2221
1
26
journal article
10.5281/zenodo.190082
d1fe9bf7-b084-4fc7-b58f-409f58c04c37
1175-5326
190082
Sikaiana albomaculata
(
Distant, 1917
)
(
Figs 9
,
17
)
Iguvium albomaculatum
Distant, 1917
: 287
.
Sikaiana albomaculata
(
Distant, 1917
)
,
comb. nov.
by
Muir, 1918
.
Types
.
Lectotype
, here designated, 3 (examined),
SEYCHELLES
, Silhouette
: glued on card, labelled ‘Silhouette’08,
Seychelles
Exp., (handwritten) 126, (round label with red border)
Type
, H. T., (handwritten)
Iguvium albomaculatum
Type
Dist.,
Seychelle
Islands, Percy Sladen Trust Expedition, 1913-170 (BMNH).
Paralectotype
, 1 Ƥ (examined),
Mahé
: glued on card, right forewing separately on second card, labelled “
Mahe
,´08-9’
Seychelles
Exp., (handwritten) 104, (round label with yellow border) Co-type, (handwritten)
Iguvium albomaculatum
Cotype Dist.,
Seychelle
Islands, Percy Sladen Trust Expedition, 1913
-170 (BMNH).
Remarks.
The two specimens examined match the features given in the original description. The original description further details the
type
localities: The specimen from Silhouette was collected on the Mare aux Cochons plateau, whereas the specimen from
Mahé
was found on the Cascade Estate, about
800 feet
high. Because the original description does not mention the designation of a
holotype
these specimens are regarded as
syntypes
. The male specimen labelled
Type
, H. T., is hereby designated as
lectotype
to provide a diagnostic reference for the species.
Other material examined.
SEYCHELLES
, Silhouette
: 1 3, mixed forest
300 m
below (E) Jardin Marron, on
Phoenicophorium borsigianum
,
4°28'52''S
,
55°14'26''E
,
250–320m
,
20.ix.2008
, (W. Holzinger) (
OEKO
).
FIGURE 9.
Sikaiana albomaculata
: A habitus dorsal; B male genitalia; C face; D forewing. Scalebar 1 mm applies to figures A, D; scalebar 2 mm applies to figure C.
Description.
The original description is accurate. Eyes dark, very large, reaching to base of clypeus. Body and legs ochraceous with darker mottlings. Forewings subhyaline with five dark fasciae crossing few delicate dark markings (see original description and
Fig 9
). Costal vein with an orange tinge, other veins concolorous with cells. Antennae about as long as frons. Forewing with Cu arising independently from base of forewing; basal median cell broad and short, not nearly reaching the middle of forewing. Hindwing 1/3 of length of forewing. Resting position with wings spread. Body length of male
1.8–1.9 mm
, of female about
1.5 mm
, length of forewings about
4.1 mm
.
Male genitalia: Anal tube short, about 1.3 times as long as wide, apically rounded (
Fig. 17
B). Pygofer laterally with a small lobe and without ventromedian process (
Fig. 17
A). Genital styles elongated, with a curved tip, about midlength with a long and slender process and a little lobe pointing dorsad (
Fig. 17
A). Aedeagus long and slender, bearing three apical spines (a, b, c) (
Fig 17
A).
Distribution.
Mahé
, Silhouette.