Banyallarga (Banyallarga) argentinica Flint

Prather Table Of Contents, Aysha L., 2004, Revision of the Neotropical caddisfly genus Banyallarga (Trichoptera: Calamoceratidae), Zootaxa 435 (1), pp. 1-76 : 12-14

Banyallarga (Banyallarga) argentinica Flint

Figs. 1–4

Banyallarga argentinica Flint 1983:77 [Type locality: Argentina, Pcia. Salta, Cañada la Gotera, Rt. 59, km 23.5; NMNH; male]. — Flint & Angrisano 1985:691 [larva, pupa, biology].

Banyallarga argentinica is distinguished from other species in the subgenus by the height of tergum X at its apex (in lateral view it appears truncate) and the ventrolateral flanges ( Fig. 3A ). In all other species of the subgenus Banyallarga , the apex of tergum X is acute. Adult. Forewing length 10.2–11.3 mm (n=52).

Head chestnut brown, with dorsomesal crest of golden setae. Maxillary palps golden brown. Antenna twice forewing length, chestnut brown, each flagellomere pale basally and with narrow patch of pale sensilla on anterior surface. Dorsal pterothorax chestnut brown; ventrolateral thorax and legs golden brown, hind tibia of male without posterior fringe. Forewing mottled gold and golden brown, with large patch of gold in distal corner of cell A 3. Hind wings without basal structures.

Male. Tergum IX with heavily sclerotized anterior ridges, posterior margin rounded or notched mesally ( Fig. 3B ); lateral ridge present; dorsal pleural setae approximately 5; ventral pleural setae approximately 5; sternum IX without posterior extensions of anterior ridge. Preanal appendage shorter than tergum X, tapered apically, with long setae on apical half. Tergum X shallowly notched posteromesally; with posteroventral flange ( Fig. 3A ). Inferior appendage simple, with long setae ventrally and laterally on coxopodite; harpago rounded apically, of uniform circumference, with tiny peglike setae apically. Phallus with phallotremal sclerite V­shaped, ventral sclerite a short tube; endotheca with large round, spiculate ventrolateral lobes and small, paired dorsomesal lobes.

Female. Sternum VIII anterior marginal ridge darkly sclerotized; dense fine setae covering posterior 1/3 ( Fig. 4C ). Tergum IX with mesal ridge extending length of segment; sternum IX with anterior and posterior lobes darkly sclerotized and finely striate, smooth anteromesally. Tergum X semisclerotized posteromesally, appendage without clear suture line; with short digitate posteromesal process ( Fig. 4B ); 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 rounded; posterior sclerite triangular ( Fig. 4A ). Posterior end of spermatheca a tiny sclerotized cone.

The association of the female of this species is tentative. In other species of Banyallarga , the males and females appear very similar in color and proportion, the only significant difference being that females are slightly larger. Of the material I examined, only 5 females were collected with males of B. argentinica . Three of these, from Argentina, look rather different from the males, being darker, with a different wing shape, and possibly with the shape of the anterior setal wart (of the head) different. They are badly rubbed, so details of wing setation are not available. The other two females, from Bolivia, are different from the Argentina specimens. Unfortunately, all specimens in this series are badly rubbed, and while these females are more similar to the males in color and shape, they are indistinguishable from females of B. yungensis . The female illustrated here is one of the specimens from Argentina. It is distinct from females of other Banyallarga species , but examination of additional positively associated specimens would increase my confidence that this is indeed the female of B. argentinica .

Material examined. ARGENTINA: Catamarca: Ao. El Pintado, near La Viña , 18.x.1973, Flint — 3 male paratypes ( NMNH) ; El Rodeo, 18–19.x.1973, Flint — 1 male paratype ( NMNH) ; Formosa: 6.vi— 1 male ( MCZ) ; Jujuy: 29.ii.1920 — 1 male paratype ( NMNH) ; Yala , viii.1982, Angrisano — 1 female ( NMNH) ; Salta: Cañada La Gotera, Rt. 59 km 23.5, 16–17.x.1973, Flint — holotype male ( MHNJP) ; 1 male, 1 female paratypes ( UMSP) ; Payogasta , 13.x.1973, Flint — 2 male paratypes ( NMNH) ; Rt. 59. Km. 22.5 Pena Baya , 16–17.x.1973, Flint — 5 male paratypes ( NMNH) ; Salta , 17–18.v.1969, P & P Spangler — 4 male, 1 female paratypes ( NMNH) ; 1 male paratype ( UMSP) ; 1898–1904, Steinbach — 2 males, 2 females ( ZMHU) ; Tucuman: Dept. Tafi Viejo, Quebrada Cainzo , 18– 19.xii.1950, Golbach — 1 male ( NMNH) ; Siambon , 10.x.1973, Flint — 1 male paratype ( NMNH) ; Parque Aconquija , 6.iv.1929, Jaynes — 1 male paratype ( NMNH) ; BOLIVIA: El Palmar to Cristal Mayo (? label illegible), 1500 m, 10.xii.1984, Peña G. — 1 male ( NMNH) ; Cochabamba: Siberia , 2900 m, 18.ii.1976, Peña G. — 20 males, 2 females ( NMNH) ; 2 males ( UMSP) ; PERU: Cuzco: 13°08'00"S 71°33'00"W, 2150 m, 28– 29.viii.1989, Adams — 6 females ( NMNH) .

Distribution. Argentina, Bolivia, Peru.

Figures

FIGURE 1. Banyallarga (Banyallarga) argentinica. Adult (UMSP000022090): A—head, dorsal; B—thorax, dorsal.

FIGURE 2. Banyallarga (Banyallarga) argentinica. Wings (UMSP000022091): A—forewing; B—hindwing.

FIGURE 3. Banyallarga (Banyallarga) argentinica. Male (holotype): A—lateral view; B—terga VII–X, dorsal view; C—ventral view; D—phallus, lateral view; E—phallus, ventral view.

FIGURE 4. Banyallarga (Banyallarga) argentinica. Female (UMSP000022090): A—sterna IX, X and vaginal apparatus, ventral view; B—terga IX and X, dorsal view; C—sternum VIII, ventral view.