taxonID	type	description	language	source
A703A9650D30A400FDAFFB793C1602F5.taxon	description	urn: lsid: zoobank. org: act: 2896 E 944 - 5 E 55 - 49 FB- 89 D 5 - 76 DF 8 D 8 E 9 EC 2 Figs 1 – 5, 11	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D30A400FDAFFB793C1602F5.taxon	diagnosis	Diagnosis The species is distinguished from many of the Oriental and Palearctic species by the absence of modified tergites on segment VI – VIII. It resembles the Bornean Oecetis peleus Malicky, 2005 and Oecetis halirrhotios Malicky, 2005 in genitalic features, particularly in the shape of tergum X, the inferior appendages of the inferior appendages and the superior appendages. However, it is distinguished from both species by the presence of a row of short megasetae forming a comb along the mesal margin of the inferior appendages and by the phallus bearing a pair of sharply triangular lateral processes on the posterior part of the ventral side compared to rounded processes in O. peleus and O. halirrhotios. It is also distinguished from O. peleus by the more strongly curved tergum X in lateral view.	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D30A400FDAFFB793C1602F5.taxon	etymology	Etymology Mesospina, referring to the row of spine-like megasetae along the mesal margin of the coxopodites.	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D30A400FDAFFB793C1602F5.taxon	materials_examined	Type material Holotype MALAYSIA • ♂ (in alcohol); Sabah, Tawau, Maliau Basin, Nepenthes Camp, crossing stream; 4 ° 43 ′ 58.9 ″ N, 116 ° 52 ′ 40.7 ″ E; 994 m a. s. l.; 9 – 14 Dec. 2007; B. Viklund and N. Jönsson leg.; 6 m Malaise trap, loc # VKBS- 2007 - 27; DNA voucher JL 5; NHRS. Paratype MALAYSIA • 1 ♂ (in alcohol); same collection data as for holotype; DNA voucher JO 7; NHRS.	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D30A400FDAFFB793C1602F5.taxon	description	Description of male BODY. Forewing: 5.6 – 6.4 mm (N = 2). Tergites VI – VIII without reticulate pattern. GENITALIA (Figs 1 – 5). Higher than long in lateral view. In lateral view segment IX with almost straight anterior margin, dorsal and ventral parts slightly produced anteriorly and posteriorly. Acrotergite of segment IX well developed, forming single transverse wart-like aggregation of setal bases, more than three times wider than long. Pair of dorsal processes of segment IX minute, wart-like. In lateral view lower posterolateral plate of segment IX short, posteriorly rounded, situated at same level as base of inferior appendages; upper posterolateral plate of segment IX short, sharply triangular, located medially between superior appendages and inferior appendages. Longitudinal apodemes absent. Tergum X reaching as far posteriorly as inferior appendages, about twice as long as superior appendages; divided into long central and two shorter lateral processes; in lateral view, central process longer than lateral processes, curving posteroventrally, with apical megasetae, narrow in dorsal view; lateral processes curving posteroventrally, each with single, apical megaseta; in dorsal view forming triangular plates. In lateral view, superior appendages almost circular, about half as long as tergum X; in dorsal view situated closely to each other, mesally fused, almost circular. In lateral view, each inferior appendage slender along their, slightly sigmoid, parallel-sided, except narrowing apically; four very long dorsally oriented setae located at mid-length of each inferior appendage; in ventral view inferior appendages well separated after basal plate and pair of small rounded processes; each mesal plate with comb of short megasetae along mesal margin. Phallus about as long as tergum X. In lateral view almost as high as long; in ventral view anterior margin almost straight, widest anteriorly and weakly narrowing posteriorly; sharply triangular pair of lateral processes after mid-length; internal sclerite horse-shoe shaped.	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D30A400FDAFFB793C1602F5.taxon	distribution	Distribution The species is only known from the type locality (Fig. 11).	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D32A406FD55FAC93C16024D.taxon	description	urn: lsid: zoobank. org: act: 0463 DEDE-CF 3 B- 43 BA- 9 B 3 D-AF 23699 C 165 C Figs 6 – 11	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D32A406FD55FAC93C16024D.taxon	diagnosis	Diagnosis The species is distinguished from many of the Oriental and Palearctic species by the absence of modified tergites on segment VI – VIII. It resembles O. idas Malicky, 2005 in genitalic features, particularly the long and slightly curving superior appendages, long and strongly ventrally curving tergum X, with right branch longer than left branch, and long pair of dorsal processes. Oecetis apelqvisti sp. nov. can be distinguished from O. idas in lateral view by the clearly bifid inferior appendages, and the apical part of phallus with a single hook-shaped sclerotized process.	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D32A406FD55FAC93C16024D.taxon	etymology	Etymology Apelqvisti, named after one of the collectors, Niklas Apelqvist (formerly Niklas Jönsson).	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D32A406FD55FAC93C16024D.taxon	materials_examined	Type material Holotype MALAYSIA • ♂ (in alcohol); Sabah, Tawau, Maliau Basin, Nepenthes Camp, 150 m from Jalan Babi; 4 ° 43 ′ 56.1 ″ N, 116 ° 52 ′ 52.0 ″ E; 1031 m a. s. l.; 13 Dec. 2007; N. Jönsson, T. Malm and B. Viklund; light trap, loc # VKBS- 2007 - 47; DNA voucher JQ 1; NHRS.	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D32A406FD55FAC93C16024D.taxon	description	Description of male BODY. Forewing: 6.7 mm (N = 1). Tergites VI – VIII unmodified. GENITALIA (Figs 6 – 10). Longer than high in lateral view. Segment IX oriented almost vertically, anterior margin uniformly convex along its height; ventral part almost circularly expanded posteriorly; dorsal part reduced. Acrotergite of segment IX well developed, forming single oval aggregation of setal bases about width of dorsal processes combined. Pair of dorsal processes of segment IX elongate, tube-like; segment lacking membranous area. Lower posterolateral plate of segment IX short, high, located from basis of inferior appendages to mid-height of segment; upper posterolateral plate of segment IX lacking. Longitudinal apodeme absent. Tergum X in lateral view twice length of superior appendages, curving ventrally along its length to pointed apex; in dorsal view bilobed from half length, both lobes tapering. Superior appendages very long, tubular, originating at anterior margin of segment IX at junction between dorsal and ventral parts; oriented dorsally before curving posteriorly over segment IX. Each inferior appendage high and wide, about as long as superior appendages, all setae shorter than length of inferior appendages; in lateral view 2 - branched, basal two-thirds widening from base, sharply triangular dorsal branch, ventral margin expanded around mid-length; apical branch digitate, narrow, oriented posterodorsally; in ventral view, each inferior appendage with basimesal expansions, sharply narrowing after basal one-third, apical one-third narrow, digitate. Phallus about as long as tergum X in lateral view, uniformly slender, oriented posteriorly before curving ventrally at mid-length, apex with single hook-shaped sclerotized process; in ventral view about length of inferior appendages, tubular, slightly widening apically, hook-shaped sclerotized process located on left side.	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
A703A9650D32A406FD55FAC93C16024D.taxon	distribution	Distribution The species is only known from the type locality (Fig. 11).	en	Johanson, Kjell Arne, Malm, Tobias, Sjöberg, Tin (2022): Description of two new species of Oecetis (Trichoptera, Leptoceridae) from Borneo. European Journal of Taxonomy 819: 158-165, DOI: 10.5852/ejt.2022.819.1787
