Banyallarga (Histricoverpa) echinata, 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 : 24-26

Banyallarga (Histricoverpa) echinata , new species

Figs. 19–20

Banyallarga "n. sp. 1" Flint 1996b:424 As its name implies, B. echinata is distinguished easily from other known species by the presence of paired rows of prominent spinelike setae on the dorsal and lateral surfaces of tergum X ( Fig. 18B ). Banyallarga nica is the only other species in Histricoverpa with spinelike setae on tergum X, but these are shorter, not arranged in rows, and located on the apices of long lateral lobes.

Adult. Forewing length 9.3–11.0 mm (n=11).

Head golden brown, with dorsomesal crest of dark brown setae. Maxillary palps golden brown. Antenna twice forewing length, golden brown. Dorsal pterothorax golden brown; ventrolateral thorax and femora golden brown, metathoracic tibia of male with long posterior setal fringe. Forewing mottled chestnut and gold. Hind wing of male with basal semimembranous sleeve or pouch, enclosing brush of long setae.

Male. Lateral margin of sternum IV deeply excavated (as in Fig. 16 ). Sterna VI and VII with pointed anteromesal processes. Tergum IX with short truncate posterior projection; dorsal pleural setae numerous; sternum IX with paired mesal ridges extending from anterior to posterior margin. Preanal appendages long, slightly flexible apically; apical 2/3 covered with long fine setae ( Fig. 19B ). Segment X deeply emarginate posteriorly, forming two acute lateral projections; mesal and lateral margins bearing spinelike setae ( Fig. 19B ). Inferior appendage simple, with long setae ventrally and laterally on coxopodite; harpago of uniform diameter along length, with fine setae basally and peglike setae apically ( Fig. 19C ). Phallus with U­shaped phallotremal sclerite, thornlike setae on endothecal membrane ( Fig. 19D ).

Female. Sternum VII with pointed anteromesal process. Sternum VIII anterior marginal ridge darkly sclerotized; fine setae covering posterior surface of sternite ( Fig. 20C ). Tergum IX with mesal ridge extending only slightly from anterior margin, posterior margin marked by rounded lobes bearing fine pilosity ( Fig. 20B ); sternum IX with anterior and posterior lobes darkly sclerotized and striate ( Fig. 20A ). Tergum X semimembranous, appendage roundly tapered ( Fig. 20B ); sternum X with semisclerotized plates bearing fine setae lateral to anal opening. Vaginal apparatus anterior sclerite truncate anteriorly, posterolateral projections acute, posterior portion folded beneath ventral surface; posterior sclerite enclosed within a semisclerotized sheath more than half width of posterior abdomen; dorsal connective membrane with regular, dense pleating ( Fig. 20A ).

Holotype male: PERU: Madre de Dios: Manu Biosphere Res., Pakitza Bio. Sta., 01­ 13­19­99, 11°56'00"S 71°18'00"W, 350 m, 1.x.1987, Pogue (BIOLAT/TRIC000000105; NMNH).

Paratypes: PERU: Cuzco: Cosnipata Valley , 12.iii.1952, Woytkowski — 2 males ( INHS) ; 24.ii.1952, Woytkowski — 1 male ( INHS) ; Madre de Dios: Manu Biosphere Res., Pakitza Bio. Sta. , 01­13­01­99, 11°56'00"S 71°18'00"W, 350 m, 27.ix.1987, Pogue — 1 male ( NMNH) ; 01­13­19­99, 11°56'00"S 71°18'00"W, 350 m, 1.x.1987, Pogue — 1 male, 1 female ( NMNH) ; kitchen stream, 11°56'00"S 71°18'00"W, 250 m, 12–18.ix.1989, Adams — 1 male ( NMNH) ; trail 2, marker 18, 11°56'00"S 71°18'00"W, 250 m, 12– 23.ix.1989, Adams et al.— 1 male ( NMNH) ; Quebrada Paujil­Picoflor , trail 1, marker 13, 11°56'39"S 71°16'59"W, 350 m, 4–6.vii.1993, Blahnik & Pescador — 1 female ( MHNJP) ; Quebrada Trompetero , trail 2, marker 15, 11°56'39"S 71°16'59"W, 350 m, 3.vii.1993, Blahnik & Pescador — 1 male ( UMSP) .

Distribution. Peru

Etymology. Echinata, from the Latin echinatus, meaning "prickly," referring to the prominent spinelike setae of male tergum X.

Figures

FIGURE 16. Banyallarga (Histricoverpa) acutiterga. Male (UMSP00000051): abdominal segments IV–X, lateral view. FIGURE 17. Banyallarga (Histricoverpa) acutiterga. Male (A, D, E, holotype; B, C, UMSP000000056): A—lateral view; B—dorsal view; C—ventral view; D—phallus, lateral view; E—phallotremal sclerites, dorsal view.

FIGURE 18. Banyallarga (Histricoverpa) acutiterga. Female (UMSP000000051): A—sterna IX, X and vaginal apparatus, ventral view; B—terga IX and X, dorsal view; C—sternum VIII, ventral view.

FIGURE 19. Banyallarga (Histricoverpa) echinata. Male (UMSP000218882): A—lateral view; B—dorsal view; C—ventral view; D—phallus, lateral view.

FIGURE 20. Banyallarga (Histricoverpa) echinata. Female (BIOLAT/TRIC000000113): A— sterna IX, X and vaginal apparatus, ventral view; B—terga IX and X, dorsal view; C—sternum VIII, ventral view.