Mortoniella, Blahnik & Holzenthal, 2017

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 : 113

Key to males of northern South American Mortoniella

(The key is to known species and should be used cautiously, in conjunction with the figures and diagnoses for the species, since many undescribed species probably exist.)

1.

— Segment IX with anterolateral margin produced in ventral ½ ( Fig. 1A , 82A , 90A ), lateral lobes of segment usually widely divided dorsally (more than ½ width of segment ( Fig. 1B , 82B , 90B )), exception in flinti subgroup of the bilineata group ( Fig. 19B ), and M. triangularis of the ormina group ( Fig. 86B ), with lobes narrowly divided [intermediate species, M. unilineata Sykora ( Fig. 78 ), with segment IX slightly produced ventrally and lateral lobes separated by about ½ width of segment, treated below under couplet 41]; ventral process of segment VI elongate, narrow, and posteriorly directed (length usually 2 times width at base or more) ........ 2 Segment IX with anterolateral margin almost evenly rounded ( Fig. 28A , 35A ); lateral lobes of segment narrowly divided dorsally (usually much less than ½ width of segment) ( Fig. 28B , 35B ); ventral process of segment VI usually short (length 1-1½ times width at base), but very elongate in a few species listed as “unplaced to species group”) (subgenus Mortoniella , in part)

................................................................................................................................................... 30 2(1).

— Size smaller (forewing usually less than 3 mm); hind wing with fork II only ( Fig. 102B, 103B, 104B ) (subgenus Nanotrichia ) ................................................................................................... 3 Size larger (forewing usually more than 4 mm); hind wing with forks II, III and V present ( Fig. 97B, 99B ), or with forks II and V ( Fig. 98B ) (subgenus Mortoniella , bilineata group) ........... 4 3(2).

Figures

Figure 1. Mortoniella (Mortoniella) angulata Flint, 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.

Figure 19. Mortoniella (Mortoniella) flinti Sykora, 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.

Figure 28. Mortoniella (Mortoniella) atenuata (Flint), male genitalia. A—lateral; B—segment IX and tergum X, dorsal; C—phallic ensemble, ventral.

Figure 35. Mortoniella (Mortoniella) elongata (Flint), male genitalia. A—lateral; B—segment IX and tergum X, dorsal; C—phallic ensemble, ventral; D—dorsal phallic spine, dorsal.

Figure 78. Mortoniella (Mortoniella) unilineata Sykora, 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.

Figure 82. Mortoniella (Nanotrichia) macarenica (Flint), 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.

Figure 86. Mortoniella (Nanotrichia) simplicis, new species, male genitalia. A—lateral; B—segment IX and tergum X, dorsal; C—phallic ensemble, ventral; D—ventral process of segment VI, lateral.

Figure 90. Mortoniella (Nanotrichia) cognata, new species, male genitalia. A—lateral; B—segment IX and tergum X, dorsal; C—phallic ensemble, ventral.

Figures 102-104. Mortoniella (Nanotrichia) species, wings. 102—Mortoniella eduardoi (Rueda Martín and Gibon) [velasquezi group]. A—forewing; B—hind wing. 103—Mortoniella collegarum (Rueda Martín and Gibon) [ormina group]. A—forewing; B—hind wing. 104—Mortoniella usseglioi (Rueda Martín and Gibon) [ormina group]. A—forewing; B—hind wing.

Figures 97-99. Mortoniella (M.) species, wings. 97—Mortoniella roldani Flint [bilineata group, bilineata subgroup]. A—forewing; B—hind wing. 98—Mortoniella tusci, n. sp. [bilineata group, flinti subgroup]. A—forewing; B—hind wing. 99—Mortoniella cornuta n. sp. [unplaced to species group]. A—forewing; B—hind wing.