Mortoniella tripuiensis, 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 : 58-61

Mortoniella tripuiensis , new species

Figs. 29 , 30

This species is perhaps most likely to be confused with M. bocaina , since both species lack the elongate endophallic spines found in M. froehlichi . Unlike M. bocaina , this species lacks any sclerotized endophallic spines or lobes at all, but has a lightly sclerotized, rounded lateral lobe on the phallicata, similar to that found in M. froehlichi . The apical part of the inferior appendages is apparently adnate to or continuous with the apical spine-like projections of the mesal pockets of the fused inferior appendages, giving the ventral profile of the phallic ensemble an open appearance.

Adult. Length of forewing: male 2.8–3.1 mm, female 3.0– 3.5 mm. Forewing with forks I, II, and III present, hind wing with fork II only. Spur formula 0:3:4. Overall color dark brown. Legs brown, tibial spurs somewhat darker in color, but not strongly contrasting with legs. Wing bar at anastamosis marked with white, contrasting setae.

Male genitalia. Ventral process of segment VI posteriorly projecting, elongate, narrow, length more than 2 times width at base ( Fig. 29E ). Segment IX moderately rounded anterolaterally, length greatest in ventral 1/2 (or near middle), posterolateral margin nearly linear; segment deeply excised dorsomesally and ventromesally, forming lateral lobes, lobes separated dorsomesally by about 1/2 width of segment. Tergum X moderate in length, simple in structure, with deep, broad, U-shaped mesal excision; apical lobes, as viewed laterally, distinctly projecting, rounded to subacute apically. Inferior appendages almost completely fused to phallic ensemble, basally with short, setose, anteriorly-directed lobes, apically apparently fused to spine-like apical projections of mesal pockets of fused inferior appendages. Mesal pockets of fused inferior appendages very bulbously enlarged, with elongate, spine-like, posteriorly-directed apicoventral projections. Paramere appendages very narrow, elongate, about as long as dorsal phallic spine. Phallotheca very short; ventral rod-like appendages elongate, with widely flared apices. Dorsal phallic spine, as viewed dorsally, broad in middle, gradually narrowed and rounded apically; as viewed laterally, relatively narrow, upturned, more distinctly at about apical 1/3rd. Phallicata with lightly sclerotized, rounded lateral lobes. Endophallic membrane simple in structure, without sclerotized lateral processes or lobes. Phallotremal sclerite evident as small, rounded sclerite.

Holotype male: BRAZIL: Minas Gerais: Estação Ecológica do Tripuí, Córrego Tripuí , 20°23'22"S, 043°32'32"W, 1070 m, 21.xi.1998, Paprocki, Braga & Amarante ( UMSP000047049 ) (pinned) ( MZUSP).

Paratypes: BRAZIL: Minas Gerais: same locality and date as holotype — 1 female (pinned) ( MZUSP) ; same locality, 16.viii.1998, Paprocki & Amarante — 2 males, 1 female (pinned) ( UMSP) ; same locality, 20.ix.1998, Paprocki & Braga — 2 males (pinned)( UMSP, NMNH) ; Córrego Tripuí , 20°23'19"S, 043°32'37"W, 1100 m, 27.vii.1998, Paprocki Braga & Amarante — 1 female (pinned) ( UMSP) .

Etymology. This species is named M. tripuiensis after Estação Ecológica do Tripuí, the beautiful reserve where the holotype and paratype specimens were collected.

Figures

FIGURE 29. Mortoniella tripuiensis, 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 segment VI, lateral.

FIGURES 30–32. Mortoniella velasquezi species group, female genitalia: 30, Mortoniella tripuiensis, new species: A—tergum IX, dorsal; B—ventral; C—tergum VII, dorsal. 31, Mortoniella froehlichi, new species: tergum IX, dorsal. 32, Mortoniella bocaina, new species: tergum IX, dorsal.