Mortoniella punensis ( Flint, 1983 )

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 : 45-47

Mortoniella punensis ( Flint, 1983)

Fig. 22

Mexitrichia punensis Flint, 1983: 9 ; Rueda & Gibon 2008: 223 [illustration; distribution].

Mortoniella punensis (Flint) ; Blahnik & Holzenthal 2008: 69 [ M. leroda species group].

Mortoniella punensis is most closely related to M. marini . As mentioned in the discussion of the M. punensis subgroup, both species have curved, spine-like dorsolateral processes on the phallicata that hook over the paramere appendages, causing them to cross mesally, and also have upturned, flattened processes from the ventral margin of the phallicata. Both species also have a second apicolateral projection on each side of tergum X, in addition to the usual acute apicolateral projection. M. punensis is most readily diagnosed from M. marini by having a tergum X that is rounded and projecting apicomesally, rather than invaginated.

Adult. Length of forewing: male 4.2 mm. Forewing with forks I, II, and III present, hind wing with fork II only. Spur formula 0:4:4. Overall color medium brown. Tibial spurs somewhat darker than legs, contrasting in color. Wing bar at anastamosis more or less distinctly marked with whitish setae, bar discontinuous.

Male genitalia. Ventral process of segment VI laterally compressed, somewhat posteriorly directed, relatively wide basally, narrowed and subacute apically, length about 2 times width at base ( Fig. 22E ). Segment IX nearly evenly rounded anterolaterally, length greatest midlaterally, posterolateral margin convexly rounded in dorsal 1/2, 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 convexly rounded mesally, with short, projecting dorsolateral lobes and rounded ventrolateral lobes; dorsolateral lobes, as viewed dorsally, somewhat mesally curved, narrow basally, subacute apically. Inferior appendages short, without distinct ventromesal projection, lateral lobes rounded dorsally, not forming tapering dorsal projections. Mesal pockets of fused inferior appendages with apical processes relatively short, posteriorly curved. Paramere appendages short, narrow, uniform in width, acute apically, each mesally turned so that appendages from opposite sides cross over one another mesally. Dorsal phallic spine, as viewed laterally, somewhat widened in middle, rather gradually upturned from base, more strongly in apical 1/4th, tapering apically; in dorsal view, uniform in width in basal part, somewhat inflated before apical inflection, apex weakly bifid, apices acute. Phallicata with elongate narrow, sinuous dorsolateral processes, each curved over corresponding paramere appendage; laterally with broad, subtruncate, dorsallydirected lobes, each paralleling assemblage formed by paramere appendage and dorsolateral lobe of phallicata. Endophallic membrane apparently short and simple, without ventromesal spine; phallotremal spines absent.

Material examined. ARGENTINA: Tucuman: Rt. 307, La Angostura, 11.x.1973, OS Flint — 1 male (paratype, pinned) ( NMNH) .

Distribution. Argentina, Bolivia.

Figures

FIGURE 22. Mortoniella punensis (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.