Synagapetus laurisilvanicus Martín, González & Martínez, 2017

Martín, Luis, Martínez, Jesús, Aguín-Pombo, Dora & González, Marcos A., 2017, new endemic Synagapetus species (Trichoptera: Glossosomatidae) from Madeira Island (Portugal), Zootaxa 4286 (2), pp. 296-300 : 297-299

Synagapetus laurisilvanicus Martín, González & Martínez n. sp.

Type material. Holotype Male : Madeira Island ( Portugal), Chão da Ribeira, 32°47’59.99”N, 17°06’36”W, 480 m elevation, 8-vii-1998, leg. I Silva. Paratopotypes: 10 ♂, same data as holotype , leg. I. Silva, Fernands, & Mauricio). 2♂, 19-ii-1997 ; 1♂, 19-xii-1997; 1♂, 26-i-1998; 1♂, 15-iv-1998; 2♂, 12-v-1998; 1♂, 8-vii-1998; 1♂, 4-viii-1998; 1♂; 4-xi-1998.

All specimens, including the holotype and paratopotypes, are preserved in 70% ethanol. The holotype and 8 paratopotype males are deposited in the collection of Marcos A. González at the University of Santiago de Compostela ( Spain) ; 3 paratopotype males are deposited in the Museu Municipal do Funchal (História Natural), Funchal, Madeira, Portugal .

Female. unknown.

Etymology. The species name refers to the “laurisilva,” the typical indigenous forest of the Macaronesia region.

Diagnosis. Although S. punctatus and S. laurisilvanicus belong to the same genus and are endemic to Madeira Island, the differences between them are remarkable. Forewings of S. punctatus (for details see Mosely 1938, fig. 3, described as Lanagapetus lumbladi Mosely 1938) are narrower and their venation is generally simpler. In the posterior wings of S. punctatus , only fork 5 is clearly present (forks 1, 2, 3 and 5 are present in the new species). Segment X in dorsal view is longer, narrower, and more deeply excised in the new species. In lateral view, the inferior appendages are nearly rectangular, with their apices obtuse or rounded in S. punctatus (see Mosely 1938, figs. 4–7; Malicky 2004, p. 244), but they are strongly oval in the new species; viewed ventrally they are strongly curved mesad in the new species, but are straight and divergent in S. punctatus . The position of the strong triangular black tooth on the inner edge of each inferior appendage is clearly apical in the new species and subapical in S. punctatus . The structure of the phallic complex is simpler and more nearly tubular in S. punctatus , less strongly bifurcate at the apex in dorsal view; in the new species, the distal part of the aedeagus is clearly bifurcate. In lateral view the aedeagus is shaped like a bird head at the apex, but is a simple rounded lobe in S. punctatus .

Description of the male ( Figs. 1–7 ). Antennae, head, and thorax brown; abdomen and legs pale brown (in ethanol). Length of each forewing 3.0–4.0 mm; narrow and long, apex acute; apical forks 1, 2, 3, 4, and 5 present. Hind wings clearly shorter and narrower than forewings; each with subcosta ending in costa about middle length of wing; fork 1 short but distinct; apical forks 2 and 3 about equal in length, fork 5 about twice as long as 2 or 3. Tibial spur formula 2,4,4. Sternum V without glands laterally, instead with folded posterolateral membrane. Ventral process of segment VI very short, spine-shaped.

Genitalia male ( Figs. 1, 2, 4–6 ): Segment IX in lateral view relatively short longitudinally, longer ventrally than dorsally, with dorsolateral 1/5 of each anterior margin slightly convex, ventrolateral 4/5 almost straight, and each posterolateral margin slightly concave above and below obtuse prominence in middle. Segment X long, in lateral view directed caudad, apical 1/3 attenuated, dorsally membranous along distal 2/3, slightly sclerotized ventrolaterally; in dorsal view somewhat wider in its distal half, with lateral margins slightly convex; apex with ogival excision 2/3 as deep as segment, separating two lateral lobes, these lobes apically acute and moderately sclerotized. Superior appendages (cerci) absent. Inferior appendages (gonopods), in lateral view ovoid, slightly shorter than segment X, each with ventral margin markedly convex, dorsal margin slightly convex; in ventral view pair of inferior appendages shaped like clamps, each rounded laterally and distally, with strongly sclerotized apical tooth directed mesad; longitudinal inner ridge furnished at 2/3 length with another, shorter tooth. Phallic complex, with pair of long and weakly sclerotized spines, ending just before apex; phallobase with dorsal sclerite Y-shaped in dorsal view; distal part (aedeagus), in dorso-ventral view clearly bilobed at apex; in lateral view, with apex resembling head of bird.

Figures

FIGURES 1 – 7. Synagapetus laurisilvanicus n. sp., male. 1, genitalia, left lateral; 2, genitalia, dorsal; 3, wings, dorsal; 4, phallic apex (spines not represented), dorsal; 5, phallic complex, left lateral; 6, genitalia, ventral; 7, sterna V and VI, left lateral.