Ollieopteryx inopinata Weaver & Gibon & Chvojka & Oláh 2020, new species
Creators: name: Weaver, John S.
name: Gibon, François-Marie
name: Chvojka, Pavel
name: Oláh, János
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Dipseudopsidae
Ollieopteryx
Ollieopteryx inopinata

description: Ollieopteryx inopinata, new species
Figs 1–2, 9–11
Diagnosis. This species is similar to O. fianarana, both species having inferior appendages each long and slender and bearing a long slender basodorsal process and having preanal and intermediate appendages long and slender. Ollieopteryx inopinata differs from O. fianarana by having male segment IX+X and preanal and intermediate appendages thicker in lateral view and with shorter and stouter spiniform setae.
Description. Male. General color light brown (in alcohol). Maxillary palps with 3rd segment 1.75 X length of 1st segment, 4th segment 1.33 X length of 1st segment, and 5th segment slightly longer than segments 1+2. Wings having venation same as depicted in Fig. 4 (of O. fianarana n. sp.). Forewings of holotype each 8.3 mm long, and hind wings each 7.3 mm. Head (Fig. 1) dorsum with posteromedian sulcus, one arched anteromedial wart, one pair of small central warts, and one pair of large posterolateral warts. Maxillary palps small (Fig. 2), each with relative length ratios of segments: 1, 1, 1.6, 1, 2. Labial palps reduced, each with total length equal to that of first two segments of maxillary palps.
Genitalia (Figs 9–11): Sternite IX subtriangular in lateral view; tergite IX articulating anteriorly with sternite IX and fused with base of tergite X (line of fusion not discernible). Preanal appendages (pre. app.), each with apical portion adjacent to ventrolateral margin of segment IX + X, curved slightly and bearing short and stout dorsal preapical and apical spiniform setae. Intermediate appendages (int. app.) slightly shorter than preanal appendages, each bearing many short spiniform setae along its ventral margin. Inferior appendages (inf. app.) each with two branches: 1) ventral main branch long, slightly longer than tergites IX + X, nearly straight with apex curved slightly dorsad in lateral view, with dense patch of short spiniform setae before furcation on basomesal surface; 2) basodorsal branch slender, rod-like, 3/4 as long as main branch, base directed posterodorsad, extended posterad and inclined slightly downward toward subapex of main branch. Phallic apparatus long, almost straight, with ventral margin slightly concave; partially retracted endotheca without identifiable enclosed sclerotized structure.
Holotype: MADAGASCAR: Toamasina Province, small tributary of the Sahatandra River, road to Lakato, 19°03’30’’S, 48°21’50’’E, 1.075 m a.s.l., male, 19.x.1995, light-trap, F-M. Gibon leg. (CBGP); mounted on a slide in Euparal. Paratype: male, small tributary of the Rianila, now included in the Mantadia National Park, 18°56’47’’S, 48°25’26’’E, 950 m a.s.l., 27.xi.1996, light-trap, F-M Gibon leg. (CBGP); mounted on a slide in Euparal.
Etymology: Latin adjective, inopinata, unexpected, or surprised.
Distribution: Known from only the Rianila River basin of Madagascar.
description: Published as part of Weaver, John S., Gibon, François-Marie, Chvojka, Pavel & Oláh, János, 2020, Ollieopteryx, a new genus of caddisflies from Madagascar (Trichoptera Dipseudopsidae), pp. 567-577 in Zootaxa 4890 (4) on pages 571-572, DOI: 10.11646/zootaxa.4890.4.8, http://zenodo.org/record/4306612