Banyallarga (Banyallarga) penai, Prather Table Of Contents, 2004

Prather Table Of Contents, Aysha L., 2004, Revision of the Neotropical caddisfly genus Banyallarga (Trichoptera: Calamoceratidae), Zootaxa 435 (1), pp. 1-76 : 16-17

Banyallarga (Banyallarga) penai , new species

Figs. 8 , 9

Banyallarga penai is similar to B. columbiana in the broad apex of tergum X, which in B. penai is shallowly notched. Banyallarga penai is distinguished from B. columbiana and other species in the subgenus Banyallarga by the paired basolateral lobes of tergum X ( Fig. 8B ).

Adult. Forewing length 11.9–12.9 mm (n=10).

Head chestnut brown. Maxillary palps chestnut brown. Antenna twice forewing length, dark brown laterally, each flagellomere pale basally and with narrow patch of pale sensilla on mesal surface. Dorsal pterothorax chestnut brown; ventrolateral thorax and legs golden brown. Forewing mottled gold and dark brown, with large round patches of golden setae marking nygma and thyridium. Hind wing of male with basal semimembranous sleeve or pouch, enclosing brush of long setae.

Male. Tergum IX with heavily sclerotized anterior ridge, mesal surface semimembranous and covered with dense fine pilosity; lateral ridge present; dorsal pleural setae approximately 15; ventral pleural setae approximately 5; sternum IX with paired sublateral ridges extending from anterior margin to posterior margin ( Fig. 8C ). Preanal appendage shorter than tergum X, rounded apically, with long setae on apical half. Tergum X with paired rounded basolateral lobes; tapered and shallowly notched posteromesally ( Fig. 8B ); in lateral view tapered apically ( Fig. 8A ). Inferior appendage simple, with long setae ventrally and laterally on coxopodite; harpago rounded apically, of uniform circumference, with short fine setae basoventrally, peglike setae apically. Phallus with phallotremal sclerite horseshoe­shaped, ventral sclerite a short tube; endotheca with large round, spiculate lateral lobes and single large dorsomesal lobe ( Fig. 8D, E ).

Female. Sternum VIII anterior marginal ridge darkly sclerotized; dense fine setae covering posterior 1/2. Tergum IX without mesal ridge; sternum IX with anterior and posterior lobes darkly sclerotized and finely striate; anterior lobe smooth anteromesally, posterior lobe with fine punctations posterolaterally. Tergum X semisclerotized posteromesally, appendage roundly tapered posteromesally ( Fig. 9B ); sternum X with semisclerotized plates bearing fine setae lateral to anal opening. Vaginal apparatus anterior and posterior sclerites equal in length; anterior sclerite emarginate anteriorly, posterolateral projections tapered; posterior sclerite narrowing toward vaginal opening, posterior end of spermatheca a robust sclerotized ring ( Fig. 9A ).

Holotype male: BOLIVIA: La Paz: Unduavi / Coroico , 2500 m, 19–25.xi.1984, Peña G. ( UMSP000010005 ; NMNH).

Paratypes: BOLIVIA: La Paz: Unduavi / Coroico , 2500 m, 19–25.xi.1984, Peña G. — 3 males, 2 females, 2 adults ( NMNH) ; 1 male ( UMSP) ; ECUADOR: Loja: Loja , 2750 m, 21.xii.1992, Becker — 1 female ( NMNH) .

Distribution. Bolivia, Ecuador.

Etymology. Named in honor of the late L. E. Peña, who through his collecting efforts added greatly to our knowledge of the Neotropical caddisfly fauna.

Figures

FIGURE 8. Banyallarga (Banyallarga) penai. Male (holotype): A—lateral view; B—dorsal view; C—ventral view; D—phallus, lateral view; E—phallus, caudoventral view.

FIGURE 9. Banyallarga (Banyallarga) penai. Female (UMSP000010006): A—sterna IX, X and vaginal apparatus, ventral view; B—terga IX and X, dorsal view; C—sternum VIII, ventral view.