Mortoniella (Mortoniella) bolivica ( Schmid, 1958 )

Blahnik, Roger J. & Holzenthal, Ralph W., 2017, Revision of the northern South American species of Mortoniella Ulmer 1906 (Trichoptera: Glossosomatidae: Protoptilinae) *, Insecta Mundi 2017 (602), pp. 1-251 : 50-51

Mortoniella (Mortoniella) bolivica ( Schmid, 1958)

Fig. 32

Mexitrichia bolivica Schmid 1958: 193 .

Mortoniella bolivica (Schmid) : Blahnik and Holzenthal 2008: 69 [member of the leroda species group].

This species is closely related to M. flexuosa , n. sp. and the two form a closely related species pair. Both species are unusual for species in the leroda group in having an inferior appendage with an elongate, reflexed, dorsolateral projection. Mortoniella bolivica can be diagnosed in that the dorsal projection of its inferior appendage is shorter and more uniformly curved.

Adult —Length of forewing: male 4.4-5.0 mm. Forewing with forks I, II, and III present, hind wing with forks II and III. Spur formula 0:4:4. Overall color light brown. Tibial spurs slightly darker in color, contrasting with legs. Wing bar at anastamosis relatively indistinct, interrupted, marked with whitish setae.

Male genitalia —Ventral process of segment VI laterally compressed, very large, subtriangular, posteroventrally projecting, width at base nearly as long as segment, subequal to length. Segment IX nearly evenly rounded anterolaterally, length greatest midlaterally, posterolateral margin convexly rounded dorsally, narrowing ventrally; segment deeply mesally excised dorsally and ventrally, forming lateral lobes, separated dorsomesally by much less than ½ width of segment. Tergum X with excision between lateral lobes nearly linear; apicolateral lobes distinctly sclerotized, acute, curved inward from lateral margins, mesal margins subparallel. Inferior appendages relatively large and prominent, setose, nearly completely divided ventromesally, apicolateral angles acute, dorsolateral lobes narrow and posteriorly recurved, apices acute. Mesal pockets of inferior appendage with apical processes relatively short, dorsally curved. Paramere appendages moderately elongate, narrow, extending about as far as apical inflection of dorsal phallic spine. Dorsal phallic spine, as viewed laterally, nearly uniform in width, narrowing apically, base distinctly curved, apex weakly and obtusely upturned in about apical ¼ or 1/5; in dorsal view, with apical inflection distinctly widened (dorsoventrally flattened), apex irregularly serrate or bifurcate ( Fig. 32D and inset). Phallicata with dorsal margin weakly sclerotized, apparently to accommodate dorsal phallic spine. Endophallic membrane moderately elongate and relatively simple, with small membranous apical and preapical lobes, ventrally with pair of distinctly sclerotized, curved spines; phallotremal spines absent.

Material examined — BOLIVIA: Coroico, 3-13.xii.1955, LE Peña G – 2 male Paratypes (pinned) ( NMNH) ; PERU: Cuzco: Paucartambo to Pilcopata rd., river at Puente Unión , 13.07033° S, 71.56667° W, 1670 m, 21-23.vi.1993, Blahnik and Pescador– 2 males (pinned) ( NMNH) ; Paucartambo to Pilcopata rd., Río San Pedro at Puente San Pedro , 13.05500° S, 71.64633° W, 1445 m, 24.vi.1993, Blahnik and Pescador– 1 male (pinned) ( UMSP) .

Distribution — Bolivia, Peru.

Figures

Figure 32. Mortoniella (Mortoniella) bolivica (Schmid), male genitalia. A—lateral; B—segment IX and tergum X, dorsal; C—phallic ensemble, ventral; D—dorsal phallic spine and apex of variant, dorsal; E—ventral process of segment VI, lateral.