Magadacerina Malm & Johanson, 2013, new genus
Creators: name: Malm, Tobias
name: Johanson, Kjell Arne
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Leptoceridae
Magadacerina

description: Magadacerina, new genus
Figures 1–8
Type species. Magadacerina forcipata, Malm & Johanson, new species; by present designation.
Placed in tribe Blyzophilini Andersen, Kjaerandsen & Morse 1999, for reasons stated in the Discussion section.
By having the tibial spur formula 2,2,2, the new genus is easily distinguished from most other Leptocerinae genera. It is distinguished from Poecilopsyche by having hind wings with stem of R1 fully developed, from Leptocerina by having hind wings without an expanded anal region and male genitalia with a narrow ventral part of segment IX, from Athripsodes and Ceraclea by having each forewing with a sessile fork of M, from Leptecho by having fork I present in the hind wing, from Axiocerina by having the forewing crossveins r-m and m - cu almost parallel and male genitalia without lateral bulbs on the inferior appendages, and from Blyzophilus by having male genitalia with the preanal appendages greatly produced posterad and forewings with the crossvein r-m not oblique.
Description. Male body. Colour yellowish brown (in alcohol). Head with prominent dorsolateral sulci, midcranial sulcus absent, anteromesal setal wart subtriangular with small circular mediolateral setal wart at each posterior corner (Fig. 1). Tibial spur formula 2,2,2.
Male wings. Forewings narrow; R1 indistinct along the length of Sc; discoidal cell nearly as long as thyridial cell; forks I and V present, fork I petiolate; crossvein r-m and crossvein m-cu almost aligned; bifurcation of M sessile; Cu2 slightly sigmoid (Fig. 2). Hind wings narrow, discoidal cell absent, forks I and V present, bifurcation of M sessile. Nygma in both wings located close to M1+2 (Fig. 3).
Male genitalia. Segment IX short ventrally, slightly longer dorsally. Preanal appendages wide basally and fused with segment IX, posterodorsally produced into pair of long, digitate extensions, apically curving ventrad (Figs 4–5). Tergum X directed posteroventrad before extending posterad into pair of dorsally curving lobes; fused basoventrally, greatly produced anterad into segment IX (Fig. 6). Inferior appendages each with 2 dorsal lobes: medial lobe club-shaped, lateral lobe tapering to acute apex (Fig. 4); basal plates merged with ventral ridge; curved anteroventrad (Fig. 4; IA.b.p). Phallus sinuous in lateral view, with pair of stout paramere spines; phallobase 1/5th of total length; phallic shield covering basal part, apparently articulating with basal plate of inferior appendage, dorsal apex produced into spine-like process articulating with basoventral extension of tergum X (Figs 7–8).
Etymology. Magada-, derived from Madagascar, the type country, and -cerina, from the Greek “keros” meaning “horn” (here “antenna”), following the suffix tradition of other leptocerine genera. Gender is feminine.
description: Published as part of Malm, Tobias & Johanson, Kjell Arne, 2013, Magadacerina, a new genus of Leptoceridae (Trichoptera) from Madagascar, pp. 215-220 in Zootaxa 3608 (3) on pages 216-217, DOI: 10.11646/zootaxa.3608.3.5, http://zenodo.org/record/216761