Mortoniella anakantha, 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 : 14-15

Mortoniella anakantha , new species

Fig. 4

This species is very similar to both Mortoniella tapanti , n. sp., and M. akantha , n. sp, as discussed above. All of these species are characterized by having an inferior appendage with a single, symmetrical apicomesal projection and also distinctive, elongate dorsolateral branches. Mortoniella anakantha is most similar to M. akantha , especially in the form of the inferior appendage. Both species have the apicomesal projection of the inferior appendage more elongate than M. tapanti , and the dorsolateral branches are not forked. Mortoniella anakantha differs from M. akantha in that the dorsolateral branches of the inferior appendage lack preapically widened, basket-like, and setose structures, although a few scattered setae may be present. Additionally, the apices of the dorsolateral branches, in M. anakantha , are usually more distinctly mesally inturned than in M. akantha , often with an accompanying small pleated fold at the bend.

Adult. Length of forewing: male 3.6–4.2 mm, female 3.9–5 mm. Forewing with forks I, II, and III, hind wing with forks II and III. Overall color light to medium brown, palps and basal part of antennal and tarsal segments darker brown, apices of tibiae, tarsal and basal antennal segments light brown. Wing bar at anastamosis distinct, marked by pale, light brown setae. Ventral process of abdominal segment VI (male) short, ventrally oriented, subtriangular, rounded to subacute apically, base about as long as length, not or very slightly constricted basally.

Male genitalia. Segment IX nearly evenly rounded anterolaterally, length greatest midlaterally, posterolateral margin forming rounded to slightly angular 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 prominent, subacute mesal projection and projecting lateral lobes, lateral lobes with apices narrowed, subacute, mesally curved. Inferior appendage with relatively broad, prominent, symmetrical, apically rounded apicomesal projection with elongate setae ventrally and laterally, short, sparse setae dorsally; appendages basolaterally, with prominent dorsal projection on each side, each terminating in elongate, narrow, posteriorly projected dorsolateral branch, extending past apicomesal projection of inferior appendage; apex of dorsolat- eral branch narrow, acute, mesally curved, not greatly widened, with a few scattered setae or setae absent; mesal pockets of inferior appendage with apical processes short, thick, dorsally curved. Paramere appendages emerging from membranous basolateral projections, very elongate, narrow, dorsally arched basally, mesally curved apically, each appendage slightly widened in apical half or third, sinuous, ribbon-like, apex narrowed and acute. Dorsal phallic spine with basoventral bulge, apical part sinuously, dorsally curved; as viewed dorsally, with apex acute. Phallicata relatively wide basally, expanded in middle, greatly narrowed apically, basoventrally with slight bulge, dorsally with broadly rounded, explanate lateral projection on either side. Endophallic membrane short, simple, without spines.

Holotype male: COSTA RICA: Puntarenas: Río Bellavista trib., Las Alturas , road to quarry, 08°57'07"N, 082°50'53"W, 1480 m, 19.iii.1991, Holzenthal, Muñoz & Huisman ( UMSP000000982 ) (pinned) ( UMSP).

Paratypes: COSTA RICA: Guanacaste: Parque Nacional Guanacaste, Río Orosí, Estación Pitilla , 10°59'28"N, 085°25'41"W, 700 m, 22–25.v.1990, Holzenthal & Blahnik — 1 male (pinned) ( UMSP) ; Puntarenas: Río Cotón, in Las Alturas , 08°56'17"N, 082°49'34"W, 1360 m, 16.ii.1986, Holzenthal, Morse & Fasth — 5 males, 8 females (pinned), 7 males (alcohol) ( UMSP) ; same locality, 12.viii.1990, Holzenthal, Blahnik & Muñoz — 16 females (pinned), 36 males, 359 females (alcohol) ( UMSP) ; same locality, 13–14.viii.1990, Holzenthal, Blahnik & Muñoz — 3 males, 31 females (pinned) ( UMSP) ; same locality, 18.iii.1991, Holzenthal, Muñoz & Huisman — 1 male, 15 females (pinned), 75 males, 327 females (alcohol) ( UMSP) ; same locality, 24.ix.1991, Muñoz & Quesada — 4 males, 54 females (pinned) ( INBIO) , 1 male, 60 females (alcohol) ( UMSP) ; small spring seep to Río Cotón in Las Alturas , 8°56'17"N, 82°49'26"W, 1380 m, 14.viii.1990, Holzenthal, Blahnik & Muñoz — 21 males (alcohol) ( NMNH) ; Río Bellavista , ca. 1.5 km NW Las Alturas, 08°57'04"N, 082°50'46"W, 1400 m, 18.ii.1986, Holzenthal, Morse & Fasth — 2 males, 18 females (pinned), 1 male (alcohol) ( UMSP) ; same locality, 15–17.vi.1986, Holzenthal, Heyn & Armitage — 2 males (alcohol) ( UMSP) ; same locality, 8–9.iv.1987, Holzenthal, Hamilton & Heyn — 4 males, 13 females (pinned), 8 males (alcohol) ( UMSP) ; same locality, 2–3.viii.1987, Holzenthal, Morse & Clausen — 1 male, 15 females (pinned), 1 male (alcohol) ( UMSP) ; same locality, 10–11.viii.1990, Holzenthal, Blahnik & Muñoz — 1 male, 25 females (pinned) ( UMSP) ; same locality, 16–17.iii.1991, Holzenthal, Muñoz & Huisman — 4 males, 31 females (pinned) ( UMSP) , 22 males (alcohol) ( INBIO) ; Río Guineal, ca 1 km (air) E Finca Helechales , 09°04'34"N, 083°05'31"W, 840 m, 22.ii.1986, Holzenthal, Morse & Fasth — 4 males (alcohol) ( UMSP) ; same locality, 4.viii.1987, Holzenthal, Morse & Clausen — 1 male (alcohol) ( UMSP) ; San Vito, 2 km S., Finca Las Cruces, 08°42'00"N, 083°00'00"W, 4000 m, 13–15.iii.1973 (Philadelphia Academy) — 1 male, 1 female (alcohol) ( NMNH) ; Río Singrí, ca 2 km (air) S Finca Helechales , 09°03'25"N, 083°04'55"W, 720 m, 21.ii.1986, Holzenthal, Morse & Fasth — 1 male, 9 females (pinned), 18 males (alcohol) ( UMSP) ; Zona Protectora Las Tablas, Río Cotón , Sitio Cotón, 08°56'28"N, 082°47'13"W, 1460 m, 15.iv.1989, Holzenthal & Blahnik — 2 males (alcohol) ( UMSP) ; Río Bellavista trib., Las Alturas , road to quarry, 08°57'07"N, 082°50'53"W, 1480 m, 19.iii.1991, Holzenthal, Muñoz & Huisman — 12 males, 6 females (pinned) ( UMSP) , 6 males, 3 females (alcohol) ( INBIO) ; PANAMA: Chiriquí: Boquete, brook at Hotel Fundadores , 1200 m, 29.v.1983, Spangler, Faitoute & Steiner — 1 male, 9 females (alcohol) ( NMNH) ; Fortuna , 08°41'00"N, 082°15'00"W, 3100 m, 1.xii.1977, R. W. Flowers — 3 males, 3 females (alcohol) ( NMNH) ; Fortuna Dam Site nr. Hornitos , 08°55'00"N, 082°16'00"W, 1050 m, 30.xi.–27.xii.1977, H. Wolda — 4 males, 1 female (alcohol) ( NMNH) .

Etymology. This species is named M. anakantha after the Greek word akantha , for a thorn or prickle, and referring to the absence of setae on the dorsolateral branches of the inferior appendage in this species, as compared to the setose processes present in M. akantha .

Figures

FIGURE 4. Mortoniella anakantha, new species. Male genitalia: A—lateral; B—segment IX and tergum X, dorsal; C— phallic ensemble, ventral.