Sikaiana albomaculata ( Distant, 1917 )

Löcker, Holger, Löcker, Birgit & Holzinger, Werner E., 2009, Revision of the Derbidae of Seychelles Islands (Insecta: Hemiptera: Fulgoromorpha), Zootaxa 2221, pp. 1-26 : 17-19

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).

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.

Figures

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.