Atopsyche (Atopsaura) svitoki Zamora-Muñoz & Derka, 2017

Zamora-Muñoz, Carmen, Derka, Tomáš & Múrria, Cesc, 2017, Four new species and new records of Atopsyche Banks (Trichoptera: Hydrobiosidae) from Pantepui biogeographical region (Venezuela), Zootaxa 4272 (2), pp. 178-200 : 186-191

publication ID	https://doi.org/ 10.11646/zootaxa.4272.2.2
publication LSID	lsid:zoobank.org:pub:6B292518-1134-47D6-9F1D-007A63935501
DOI	https://doi.org/10.5281/zenodo.6030375
persistent identifier	https://treatment.plazi.org/id/03F64075-1945-FF82-2E86-BD152A5CFE48
treatment provided by	Plazi
scientific name	Atopsyche (Atopsaura) svitoki Zamora-Muñoz & Derka
status	sp. nov.

Treatment

Atopsyche (Atopsaura) svitoki Zamora-Muñoz & Derka , n. sp. ( Figs 4 View FIGURE 4 , 7)

Atopsyche sp. nov. 2 Derka & Zamora-Muñoz 2012.

Diagnosis. Atopsyche svitoki n. sp. belongs to the A. longipennis Group ( Schmid 1989) and is very different from other described species, mainly by the shape of the parapods of the male genitalia ( Figs 4 View FIGURE 4 A, 4B), and of the lateral lobes of the phallic apparatus ( Figs 4 View FIGURE 4 D, 4E). The new species is similar to A. hamata (Mt Roraima, Brazil), A. zernyi Flint 1974 (Alto da Serra São Paulo, Brazil), and A. blahniki Santos & Holzenthal 2012 (Cachoeiras de Macacu, Rio de Janeiro, Brazil). All four species have an apical process on the first article of each inferior appendage as long as the second article, and a phallic apparatus with long paired processes, apically upturned. However, in A. svitoki n. sp. the parapods are not simple as in the other species (see Ross & King 1952b, fig. 21; Flint 1974, figs 24, 26; Santos & Holzenthal 2012, fig. 1), but are each composed of two processes, the superior, with a strong dorsal tooth at the apical third and the inferior, which is setose and bearing several spines on its mesal and lateral edges ( Figs 4 View FIGURE 4 A, 4B, arrows).

Description. Male (in ethanol). Length of each forewing 6.5 mm (n = 1). Forewing venation (Fig. 7A) complete; R1 unbranched; stem of fork I equal to its length; fork II long, sessile; fork III shorter than its stem; fork IV long, sessile; stem of M slightly curved between m -cu crossvein and first fork of M; fork V long, narrow; Cu2 long, converging near fused anal veins (1A+2A+3A), with crossvein near apex forming small cell on posterior margin of wing; apical stem of 1A + 2A long. Hind wings (Fig. 7B) each with Sc and R1 fused and incomplete. Forks I, III, and V present, fork I with short stem, fork III shorter than its stem, fork V with short stem; forks II and IV absent; Cu1 bearing long setae sub-basally; Cu2 long, straight, thickened basally and bearing long setae; 1A sinuate, widely separate from Cu2; 2A bearing long setae sub-basally. Nygmas absent in both wings. Abdomen: Sterna VII and VIII each with posteromesal process, that on VII two times longer than that on VIII, process on sternum VII armed with spine-like apical setae.

Male genitalia. Segment IX, in lateral view, longitudinally long ( Fig. 4 View FIGURE 4 A). Proctiger, in lateral view, uniformly wide, with truncate apical margin, and middorsal margin with long setae ( Fig. 4 View FIGURE 4 A). Parapods long, each divided into two processes: superior process with strong dorsal tooth at apical third, apically tapered and acute; inferior setose, slender in lateral view, broader in dorsal view, bearing several spines and subapical setae on its lateral edges ( Figs 4 View FIGURE 4 A, 4B, arrows). Preanal appendages short, button-like, setose ( Figs 4 View FIGURE 4 A, 4B). Filipods (lost in the holotype specimen after drawing) long, slender, with long setae apically ( Figs 4 View FIGURE 4 A, 4B). Inferior appendages each with first article long and of uniform width, slightly sinuous in lateral view and slightly curved mesad in ventral view, heavily setose, with apical process more slender and slightly shorter than second article ( Figs 4 View FIGURE 4 A, 4C). Phallic apparatus complex, phallotheca ( Figs 4 View FIGURE 4 D, 4E) irregular basally with narrow ventral and dorsal processes; posteriorly divided into pair of long, lateral lobes, each ending in membranous, upturned section, bearing apical and lateral small spines; aedeagus elongate, stout, spine-like, curved ventrad in basal 1/5 and then caudad, nearly as long as lateral lobes.

Type material. Holotype, 1 male (ref. number: 48). VENEZUELA: Estado Bolivar: Quebrada El Peñón in camp El Peñón —Auyán Tepui massif, 8.i.2010, 1,832 m a.s.l., N5°44'40.4", W62°32'29.7", Derka & Svitok, leg. GoogleMaps

Etymology. The species is named in honour of Marek Svitok, our colleague and friend who sampled with T. Derka at Auyán Tepui.

Atopsyche (Atopsaura) carmenae Zamora-Muñoz & Derka , n. sp. ( Figs 5 View FIGURE 5 , 8, 9, 12)

Atopsyche sp. nov. 3 Derka & Zamora-Muñoz 2012.

Diagnosis. The new species belongs to the A. longipennis Group ( Schmid 1989) and apparently is related to A. calahuaya Schmid 1989 and A. atahuallpa Schmid 1989 , both described from Ptari-tepui ( Venezuela) and A. siolii Flint 1971 (Cachoeira Pora Comeschie, Amazonas, Brazil). Atopsyche carmenae and A. calahuaya have complex parapods each composed of two processes, one superior and one inferior (see Schmid 1989, pl. XVIII, fig. 4; Figs 5 View FIGURE 5 A, 5B, arrows). The superior process is long and strongly curved at the tip in both species, although thinner in A. carmenae . The inferior process is divided in two pointed, nearly equal, acute processes in A. carmenae ( Figs 5 View FIGURE 5 A, 5B, arrows), but they are unequal in A. calahuaya , the superior longer than the inferior ( Schmid 1989, pl. XVIII, fig. 4). Parapods in A. atahuallpa and A. siolii are each composed of a single process ( Schmid 1989, pl. XVIII, fig. 7; Flint 1971, fig. 2). Also, the phallic apparatus of the new species is similar to that of A. atahuallpa ( Schmid 1989, pl. XVIII, fig. 7) and A. siolii ( Flint 1971, fig. 2): The apical portions of the lateral lobes of the phallus are divided into long, paired lateral lobes which, in lateral view, each have two short processes apically, in dorsal view with the apex expanded, spoon-like ( Figs 5 View FIGURE 5 D, 5E). In A. calahuaya , the apical portions of the lateral lobes are, in lateral view, broad bands abruptly thinner in the middle of their length and ending in an ogival and sharp point, in dorsal view, parallel ( Schmid 1989, pl. XVIII, fig. 4).

Differences between the pupae of the two species of the A. longipennis Group described here ( A. carmenae and A. cristinae ) are found primarily in the length of the mandibles and the shape of the labrum. In A. carmenae mandibles are shorter ( Fig. 12 View FIGURE 12 B) than in A. cristinae ( Fig. 12 View FIGURE 12 A). The labrum in the former species is roughly semicircular ( Fig. 12 View FIGURE 12 B), while in A. cristinae it is subtriangular ( Fig. 12 View FIGURE 12 A).

Description. Male (in ethanol). Forewing length 6.5 mm (n = 1). Forewing venation (Fig. 8A) complete; R1 branched; stem of fork I equal to its length; fork II long, sessile; fork III equal in length to its stem; fork IV longer than its stem; stem of M straight between m -cu crossvein and first fork of M; fork V long, narrow; Cu2 long, converging subapically near fused anal veins (1A+2A+3A); apical stem of 1A+2A long. Hind wings (Fig. 8B) each with Sc and R1 fused and incomplete. Forks I, III, and V present, fork I slightly longer than its stem, fork III shorter than its stem, fork V with very short stem; forks II and IV absent; Cu1 bearing small patch of long setae subbasally; Cu2 long, straight; 1A sinuate, widely separate from Cu2; base of 2A thickened with a patch of long setae. Nygmas absent in both wings. Mesothorax with bilobulate tegula bearing relatively long setae on anterior side ( Fig. 9 View FIGURE 9 C). Abdominal sterna VI and VII each with posteromesal process, that on VI two times longer than that on VII, process on sternum VI armed with spine-like apical setae.

Male genitalia. Segment IX, in lateral view, long ( Fig. 5 View FIGURE 5 A). Proctiger, in lateral view, three times widener apically than basally, covered externally with numerous minute setae; mesodorsal and lateral margins with long, coarse setae ( Fig. 5 View FIGURE 5 A). Parapods complex, each with two processes; superior process long, strongly curved at tip, setose along distal third; inferior process divided in two pointed, nearly equal, straight, acute, and setose processes ( Figs 5 View FIGURE 5 A, 5B, arrows). Preanal appendages short, rounded, setose. Filipods short, but three times longer than preanal appendages, with long setae at tips ( Figs 5 View FIGURE 5 A, 5B). Inferior appendages each with first article short, of uniform width in lateral view ( Fig. 5 View FIGURE 5 A), heavily setose, with apical process thin, subtriangular, as long as second article, curved mesoventrad ( Fig. 5 View FIGURE 5 C). Phallic apparatus complex, phallotheca ( Figs 5 View FIGURE 5 D, 5E) rounded basally with ventral extension; posteriorly divided into long, paired lateral lobes which, in lateral view, each divided into two short processes apically and, in dorsal view, with apex expanded spoon-like; aedeagus long, spine-like structure, curved caudoventrad in basal 1/4 and then caudad and slightly dorsad, shorter than tips of lateral lobes.

FIGUREs 6–8. Atopsyche n. spp., male right wings, dorsal, showing venation: Fig. 6, Atopsyche (Atopsaura) inmae n. sp.: 6A, forewing; 6B, hind wing. Fig. 7, Atopsyche (Atopsaura) svitoki n. sp.: 7A, forewing; 7B, hind wing. Fig. 8, Atopsyche (Atopsaura) carmenae n. sp.: 8A, forewing; 8B, hind wing. Scale bar 1 mm.

Pupa (in ethanol). Specimen lacking abdominal segments. Mandibles long (Length 0.62 mm), slender, two and a half times as long as width of base, and toothed and serrate over entire inner margin ( Fig. 12 View FIGURE 12 B). With three large teeth at mid-length of mesal margin of right mandible and two on left mandible. Labrum nearly semicircular. Type material. Holotype, 1 male (ref. number: 49). VENEZUELA: Estado Bolivar: Cueva Charles Brewer —Churí Tepui plateau, Chimantá massif, 15.i.2009, 2,200 m a.s.l., N5°14'57.6", W62°1'36.5", Derka, leg GoogleMaps . Paratypes, VENEZUELA: Estado Bolivar: Same data as holotype, 1 P male (ref. number: 50). Cueva Colibrí — Churí Tepui plateau, Chimantá massif, 26.i.2009, ca 2,300 m a.s.l., Derka, leg., 2L (ref. numbers: 51, 137). Other reviewed material. Atopsyche (Atopsaura) atahuallpa (see below details about number of specimens and locality of the material).