Goera higleri, Armitage & Arefina-Armitage, 2011

Armitage & Arefina-Armitage, Tatiana I., 2011, Three new species of Goera Stephens (Trichoptera: Goeridae) from Sulawesi, Indonesia, Insecta Mundi 2011 (186), pp. 1-10 : 7-9

Goera higleri sp. n.

Fig. 3 , 19-27

Diagnosis. Among the four Goera species now known from Sulawesi, the male genitalia of this new species most closely resembles those of G. skiasma and G. jolanda by the mesal process of the inferior appendage possessing a rather long subbasal projection, well visible in both lateral and ventral views. However, G. higleri can be easily distinguished from all Sulawesi species by the shape of the ventrolateral process of tergum X. It differs from G. skiasma by the wider and more robust mesal process of the inferior appendage; and, from G. jolanda by the absence of a projection on the mesal process of the inferior appendage. The female genitalia of G. higleri most closely resemble those of G. skiasma but differ by the shape of the vaginal apparatus in ventral view.

Description. Length of forewing: male – 6.8-7.5 mm; female – 8.0- 8.6 mm. Head and body yellowbrownish (in alcohol), antennae, wings and legs darker. Sternite VI in males with 3-7 spines; in females with 4-6 spines. Sternite V lacks spines. Erectile lobe of male maxillary palp light yellow, narrow basally and expanded apically, with tapered projection located at base, more than half length of lobe in unexpanded condition; projection covered with chocolate-brown setae and scales ( Fig. 3 ).

Male genitalia ( Fig. 19-24 ). Segment IX nearly vertical, in lateral view anterior margin widely rounded above midline and produced anteriorly. Preanal appendages elongate, less than half length of ventrolateral process of tergum X. Median dorsal process of tergum X absent. Ventrolateral process of tergum X elongate, slightly longer than inferior appendage, with distal portion slightly enlarged and then tapered to acute apex bent posteroventrad in lateral view; in dorsal view, ventrolateral processes fused basally, then each process bowed mesally until acute apices meet posteriorly; each ventrolateral process bearing mesally 3 setae slightly above fused base. Basal segment of inferior appendage nearly 1.5 times as high as wide in lateral view. Distal segment of inferior appendage nearly triangular in lateral view, ventral margin slightly concave. Mesal process of inferior appendage long (twice as long as distal segment), evenly tapered to acute apex, gently bent posteroventrad in lateral view, and having elongate subbasal projection; in ventral view, straight, almost parallel-sided for basal third, then tapered to acute apex directed posterolaterad and subbasal projection tapered, with smooth edges. Phallus bent ventrad mesally in lateral view, having small swelling ventrally; in dorsal view constricted mesally and expanded apically to rounded membranous apex; parameres absent.

Female genitalia ( Fig. 25-27 ). Sternite IX shoulder-like in ventral view. Segment X undivided, having slight depression apicomesally in ventral view. Supragenital plate rather short, rounded distally in ventral view. Vulvar scale bifid, divided by deep mesal notch, in ventral view; lobes triangular. Vaginal apparatus slightly longer than wide, divided into nearly equal anterior and posterior portions by mesal constriction on each side in ventral view; vaginal vestibule long.

Immature stages. Unknown.

Holotype male: INDONESIA, Sulawesi, Tenggara, Moramo, Sungai Sena , 50 m, 15 November 1989, light, R. de Jong and J. Huisman, RMNH JS 8946 . Paratypes: 43 males, 23 females, same data as holotype.

Etymology. This species is named after the late Dr. Bert Higler, for his lifetime accomplishments in Trichoptera biology and his affable, intellectual interactions with colleagues worldwide.

Figures

Figures 1-3. Left maxillary palpi, lateral. 1) Goera neboissi sp. n. 2) Goera jolanda sp. n. 3) Goera higleri sp. n.

Figures 19-24. Goera higleri sp. n., male genitalia. 19) Lateral. 20) Dorsal. 21) Ventral. 22) Phallus, lateral. 23) Phallus, dorsal. 24) Processes of sternum VI.

Figures 25-27. Goera higleri sp. n., female genitalia. 25) Lateral. 26) Ventral. 27) Processes of sternum VI.