Mortoniella buenoi, Blahnik & Holzenthal, 2008

Blahnik, Roger J. & Holzenthal, Ralph W., 2008, Revision of the Mexican and Central American species of Mortoniella (Trichoptera: Glossosomatidae: Protoptilinae), Zootaxa 1711 (1), pp. 1-72 : 19-22

Mortoniella buenoi , new species

Fig. 7

Mortoniella buenoi is easily distinguished from any other species by the structure of the paramere appendages, which are flattened and have distinctive spines on the apical half. Mortoniella buenoi has some similarity to M. leroda and M. rovira , resembling both in having a tubular phallicata without conspicuously developed dorsal projections. The apicomesal projection of the inferior appendage in M. buenoi is similar to M. leroda , but is longer and more asymmetrically curled. In contrast, the spine on the endophallic membrane in M. buenoi is more similar to M. rovira , especially in being wide basally and in its general position in the phallicata when unexpanded. The distinctiveness of this character suggests a possible sister taxon relationship between these two species.

Adult. Length of forewing: male 3.2–3.7 mm. Forewing with forks I, II, and III, hind wing with forks II and III. Overall color (in glycerin) light brown. Ventral process of abdominal segment VI (male) short, ventrally oriented, rounded to subtruncate apically, distinctly constricted basally at anterior margin.

Male genitalia. Segment IX nearly evenly rounded anterolaterally, length greatest midlaterally, posterolateral margin forming rounded projection in dorsal half, narrowing ventrally; segment deeply mesally excised dorsally and ventrally, dorsal excision narrow, much less than half width of segment. Tergum X with evenly rounded mesal excision and projecting lateral lobes, lateral lobes with apices narrowed, acute, and mesally curved. Inferior appendage with distinctly asymmetrically developed apicomesal projection, apicomesal projection very narrow and strongly dorsally curled, apically tapered and acuminate; basolaterally, with short, rounded projection on each side; mesal pockets of inferior appendage with apical processes short, dorsally curved. Paramere appendages elongate, flattened and relatively wide; each appendage in apical half with 2 or 3 rows of prominent, stout spines on outer surface. Dorsal phallic spine sinuous in lateral view, bulging basoventrally in contour with dorsal margin of phallicata, apical part distinctly, sinuously, dorsally curved; as viewed dorsally, with apex very narrowly acuminate. Phallicata narrow, tubular, moderately elongate, dorsal margin somewhat concavely depressed, dorsally without projections, basoventrally with minute microsetae. Endophallic membrane short, with single prominent, curved spine, broad basally, narrow acuminate apically, dorsally projecting in repose, ventrally projecting when everted; apicodorsally with distinct paired phallotremal spines.

Holotype male: MEXICO: Oaxaca: Loxicha, Pluma Hidalgo, 450 m, 20.x.1982, J. Bueno-Soria ( UMSP000118948 ) (in microvial of glycerin, on pin) ( IBUNAM).

Paratypes: MEXICO: Oaxaca: Candelaria de Loxicha, Finca Pacifica , 510, 2.vi.1985, E. Mariño — 9 males (alcohol) ( IBUNAM); Finca Pacifica (J. Bueno-Soria) — 2 males (alcohol) ( IBUNAM); Totoltepec ,

15°53'51"N, 096°28'37"W, 22.xi.1985, E. Barrera — 2 males (in microvial of glycerin, on pin) ( IBUNAM); same locality as holotype, 22.x.1982, J. Bueno-Soria — 2 males (in microvial of glycerin, on pin) ( IBUNAM) .

Etymology. We take great pleasure in naming this species M. buenoi , for Joaquin Bueno-Soria, who collected the type specimen, in recognition of his contributions to the study of Neotropical Trichoptera .

Figures

FIGURE 7. Mortoniella buenoi, new species. Male genitalia: A—lateral; B—segment IX and tergum X, dorsal; C— phallic ensemble, ventral; D—dorsal phallic spine, dorsal; E—ventral process of sternum VI, lateral.