Mortoniella guahybae, Blahnik & Holzenthal, 2011

Blahnik, Roger J. & Holzenthal, Ralph W., 2011, Revision of the austral South American species of Mortoniella (Trichoptera: Glossosomatidae: Protoptilinae) 2851, Zootaxa 2851 (1), pp. 1-75 : 19

Mortoniella guahybae , new species

Fig. 7

This species is distinguished from other members of the M. albolineata subgroup by the following diagnostic character set: Fused inferior appendages without distinct ventromesal process; paramere appendages short, narrow throughout, upcurved apically; and tergum X with a narrow, V-shaped mesal excision. Additional characters include a strongly inflected dorsal phallic spine and an endophallic spine that is short and curved.

Adult. Length of forewing: male 3.5–3.7 mm, female 3.8 mm. Forewing with forks I, II, and III present, hind wing with fork II only. Spur formula 0:4:4. Overall color very dark brown. Legs brown, apices of tarsi whitish, tibial spurs somewhat darker than leg, but not strongly contrasting in color. Antenna with apical part of basal segments whitish. Wing bar at anastamosis distinctly marked with white, contrasting setae, band narrow, but more or less continuous.

Male genitalia. Ventral process of segment VI laterally compressed, ventrally projecting, subtriangular, wide basally, acute apically. Segment IX nearly evenly rounded anterolaterally, length greatest midlaterally, posterolateral margin weakly, convexly rounded dorsally, narrowing ventrally; segment deeply excised dorsomesally and ventromesally, forming lateral lobes, lobes separated dorsomesally by much less than 1/2 width of segment. Tergum X with narrow V-shaped mesal excision and projecting lateral lobes; lateral lobes tapering, acute, slightly mesally curved. Inferior appendages without ventromesal projection; laterally, on each side, with setose, tapering, dorsally-directed lobes. Mesal pockets of fused inferior appendages with apical processes short, dorsally curved. Paramere appendages of moderate length, narrow, uniform in width, upcurved apically, apices acute. Dorsal phallic spine, as viewed laterally, more or less uniform in width, strongly upturned in apical 1/2, apex narrowed and acute in both lateral and dorsal views. Phallicata with short, rounded, sclerotized dorsolateral processes. Endophallic membrane simple, with bulging membranous lateral lobes and ventromesal spine; ventral spine very short, curved, apex acute; phallotremal spines absent.

Holotype male: BRAZIL: São Paulo: Parque Estadual de Campos do Jordão, Rio Galharada , 22°41'40"S, 045°27'47"W, 1530 m, 4-5.iii.1996, Holzenthal & Guahyba ( UMSP000001575 ) (pinned) ( MZUSP).

Paratypes: BRAZIL: São Paulo: same locality and date as holotype — 1male, 2 females (pinned) ( UMSP) .

Etymology. This species is named M. guahybae in memory of Rosalys Guahyba, who helped to collect the type specimens and under whose invitation the second author initiated his studies of Trichoptera in Brazil.

Figures

FIGURE 7. Mortoniella guahybae, new species, male genitalia: A—lateral; B—segment IX and tergum X, dorsal; C—phallic ensemble, ventral.