Astrotischeria atlantica Diskus & Stonis, 2020
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publication ID |
https://dx.doi.org/10.3897/zookeys.970.54801 |
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publication LSID |
lsid:zoobank.org:pub:EAAFFA3F-EB72-413E-9450-A0A9B7844F14 |
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persistent identifier |
https://treatment.plazi.org/id/24A33F1D-005A-4BB1-AF77-56D5543BD528 |
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taxon LSID |
lsid:zoobank.org:act:24A33F1D-005A-4BB1-AF77-56D5543BD528 |
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treatment provided by |
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scientific name |
Astrotischeria atlantica Diskus & Stonis |
| status |
sp. nov. |
Astrotischeria atlantica Diskus & Stonis sp. nov. Figs 1-9 View Figures 1–9 , 40 View Figures 38–43 , 41 View Figures 38–43 , 68-76 View Figures 68–76 , 77-80 View Figures 77–80
Holotype.
male, pinned, with genitalia slide no. AD969. Labels: Uruguay, Rocha Department, La Paloma, 34°39'41"S, 54°13'4"W, elevation 5 m, mining larva on Baccharis spicata (Lam.) Baill., Asteraceae , 26 Feb 2019, field card no. 5303, A. Diškus (ZIN).
Diagnosis.
Externally, this new species can be confused with some other speckled Astrotischeria species, including the species described in this paper. Astrotischeria atlantica sp. nov. can be distinguished from similar A. jociui sp. nov. (see described above) by the significantly paler color of forewing: in A. atlantica forewing is cream to pale yellowish ochre, in A. jociui is ochre. In the male genitalia, the shape of dorsal processes of the valva with unique folds (Fig. 75 View Figures 68–76 ) and the presence of additional lobes on the uncus (Figs 68 View Figures 68–76 , 69 View Figures 68–76 ) distinguish A. atlantica sp. nov. from all known congeneric species. In the female genitalia, the presence of a highly modified ovipositor (Fig. 78 View Figures 77–80 ) differentiates this new species from other Astrotischeria taxa. This species is also distinctive because no other species in this genus is known to feed on Baccharis spicata (Lam.) Baill. ( Asteraceae ).
Description.
Male (Fig. 40 View Figures 38–43 ). Forewing length 3.6-4.2 mm; wingspan 7.7-9.3 mm (n = 2). Head: frons and pecten golden cream; frontal tuft glossy cream distally, ochre-grey proximally; collar ochre-grey; antenna slightly longer than one half the length of forewing; flagellum yellowish cream proximally, pale yellowish grey distally. Tegula yellowish grey, distally cream; thorax yellowish cream. Forewing cream to pale yellowish ochre, irregularly speckled with grey and pale grey scales, apically also with some black scales; fringe pale grey, with fringe line comprised of black scales; forewing underside pale ochre-grey to brownish cream, without spots or androconia. Hindwing glossy greyish cream to cream on upper side, pale grey on underside, without androconia, but sometimes with a dark line of grey scales along one third of the fold; fringe cream. Foreleg pale grey or blackish grey on upper side, midleg and hindleg ochre cream to cream, with some pale grey scales on upper side and spurs. Abdomen yellow cream, distally pale grey on upper side, pale ochre with some grey scales on underside; genital plates large, covered with long, yellow cream scales; anal tufts long, merged into one, cream.
Male genitalia (Figs 68-76 View Figures 68–76 ) with capsule 1120 µm long, 730 µm wide. Uncus (Figs 68-71 View Figures 68–76 ) comprised of two short, triangular lobes (Fig. 71 View Figures 68–76 ) and two long, slender lobes (Fig. 70 View Figures 68–76 ); the latter possess a unique lobe-like process (Figs 68 View Figures 68–76 , 69 View Figures 68–76 ). Socii small, paired, membranous. Valva (Figs 72 View Figures 68–76 , 75 View Figures 68–76 ) ca. 730 µm long; dorsal lobe (Figs 72 View Figures 68–76 , 75 View Figures 68–76 ) greatly developed, with folds distally (Fig. 75 View Figures 68–76 ); ventral lobe of valva slender. Anellus mostly membranous, thickened only laterally (Fig. 75 View Figures 68–76 ). Vinculum rounded distally (Fig. 72 View Figures 68–76 ). Phallus ca. 970 µm long, apically bifid, with hook-like apices (Fig. 73 View Figures 68–76 ).
Female (Fig. 41 View Figures 38–43 ). Forewing length 3.6-4.3 mm; wingspan 7.7-9.4 mm (n = 2). Similar to male, but thorax and forewing tend to be paler, i.e., less speckled with grey scales. Anal tuft long, ochre cream; ovipositor slightly protruding. Otherwise, identical with male.
Female genitalia (Figs 77-80 View Figures 77–80 ) ca. 3410 µm long. Ovipositor lobes modified into a unique (among Tischeriidae ) plate-like ovipositor without peg-like setae (Fig. 78 View Figures 77–80 ); second pair of ovipositor lobes large, with numerous long setae. Posterior apophyses shorter than anterior ones (Fig. 79 View Figures 77–80 ); prela comprised of three pairs of unique projections (Fig. 79 View Figures 77–80 ). Corpus bursae with very slender and long proximal part and small main body without pectination (Fig. 77 View Figures 77–80 ). Ductus spermathaecae with three large coils (Fig. 77 View Figures 77–80 ).
Bionomics.
(Figs 1-9 View Figures 1–9 ). Host plant is Baccharis spicata (Lam.) Baill., Asteraceae (Figs 1-4 View Figures 1–9 ). Larvae mine leaves in February. The blotch-like mine (Figs 5-9 View Figures 1–9 ) is irregular, but elongated, pale brown or pale green, without frass. Adults occur in March.
Distribution.
This species is known from a single locality on the Atlantic coast in Uruguay, Rocha Department, La Paloma (Fig. 1 View Figures 1–9 ), at sea level, but the host plant has a much wider distribution (see Discussion).
Etymology.
The species is named after the Atlantic Ocean, in reference to its occurrence on the Atlantic coast of Uruguay.
Other material examined.
2 ♂, 3 ♀, paratypes: Uruguay, Rocha Department, La Paloma, 34°39'41"S, 54°13'4"W, elevation 5 m, mining larvae on Baccharis spicata (Lam.) Baill., Asteraceae , 26 Feb 2019, field card no. 5303, A. Diškus, genitalia slide nos AD970♂ (from adult in pupal skin, no moths preserved), AD968♀ (ZIN).
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