Astrotischeria ambrosiaeella (Chambers, 1875),

Jonas R. Stonis, Arūnas Diškus, Fernando Carvalho Filho & Owen T. Lewis, 2018, American Asteraceae-feeding Astrotischeria species with a highly modified, three-lobed valva in the male genitalia (Lepidoptera, Tischeriidae), Zootaxa 4469 (1), pp. 1-69: 57-59

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Astrotischeria ambrosiaeella (Chambers, 1875)


Astrotischeria ambrosiaeella (Chambers, 1875) 

( Figs. 14View FIGURES 11–15, 225–229View FIGURES 225–229, 233View FIGURE 233)

Tischeria ambrosiaeella  CHAMbERS, 1875: 112, 113.

Tischeria ambrosiaeella  CHAMbERS, in FORbES (1923: 147); BRAUN (1972: 77–79).

Tischeria ambrosiella  WALSINGHAM, 1890: 325. MISSPELLING.

Astrotischeria ambrosiaeella  (CHAMbERS); DIŠKUS & PUPLESIS (2003: 427).

Material examined. 1 ♂, 1 ♀, USA: Missouri, Kirkwood, St. Louis, mining larvae on Ambrosia trifida  ( Asteraceae  ), 13.ix.1886, ex. pupa 9.i.1890, Lord Walshingham Collection ( BMNH); 1 ♂, 1 ♀, same label but without host-plant data, [leg. Miss Murtfeldt], Lord Walshingham Collection, genitalia slide nos 28951 ♂, 28962 ♀ ( BMNH).

Diagnosis. The species belongs to the Astrotischeria trilobata  group. The combination of the very distinctive, unique, horn-shaped dorsal lobes of valva (see Figs. 226–228View FIGURES 225–229), unique shape of the phallus (see Fig. 229View FIGURES 225–229), and a rather large but short uncus in the male genitalia distinguishes A. ambrosiaeella  from all other Astrotischeria  , including other members of the A. trilobata  group. The fact that it feeds on Ambrosia  also makes this species rather distinctive.

Male ( Fig. 225View FIGURES 225–229). Forewing about 3.5–3.6 mm; wingspan about 7.5–7.7 mm. For a description see Braun Braun 1972: 77, 78.

Female. Similar to male.

Male genitalia ( Figs. 226–229View FIGURES 225–229). Desribed in Braun 1972: 78.

Female genitalia. Described and illustrated in Braun 1972: 78, Fig. 39View FIGURES 38–42 (only apophyses and prela).

Bionomics. Host plants: Ambrosia trifida  L., A. artemisiifolia  L., also possibly A. psilostachya  DC. (Braun 1972). Leaf mine is an irregular, elongated blotch, usually between two veins (illustrated in Braun 1972: Fig. 49View FIGURES 46–50). Larvae recorded from July, September and October; adults from August –November (Braun 1972: 78).

Distribution ( Fig. 233View FIGURE 233). USA (Pennsylvania, Ohio, Kentucky, Missouri, California).