Aulagromyza cornigera (Griffiths)

(Figs. 6, 7, 37)

Material examined. MASSACHUSETTS: Franklin Co., Northfield, Dickinson St., 10.v.2016, em. 6.iv.2017, C.S. Eiseman, ex Lonicera × bella, #CSE3399, CNC939724–939726 ; Hampshire Co., South Hadley, Lithia Springs Rd., 11.v.2016, em. 4–5.iv.2017, C.S. Eiseman, ex Lonicera morrowii, #CSE3381, CNC939687–939690 (1³ 2♀ 1 pu- parium) .

Hosts. Caprifoliaceae: Lonicera *×bella Zabel, L. ciliosa (Pursh) Poir. ex DC. (leaf mines and larvae only), L. dioica L. (leaf mines and larvae only), L. involucrata (Richardson) Banks ex Spreng., L. morrowii A. Gray, L. tatarica L. (leaf mines and larvae only), Symphoricarpos albus (L.) S.F. Blake (Spencer 1969, 1981; Sehgal 1971; Griffiths 1973; this species is treated as Paraphytomyza lonicerae (Robineau-Desvoidy) in the older two references). We have also seen leaf mines on Lonicera caerulea L., L. japonica Thunb., and L. maackii (Rupr.) Herder, and Craves (2018) found them on Triosteum perfoliatum L.

Leaf mine. (Fig. 37) White to greenish-white, broadly linear, with frass in discrete black lumps. Larvae avoid crossing the midrib except toward the apex, and as a result the mine tends to more or less follow the leaf margin.

Puparium. (Fig. 7) Brown, with deep intersegmental grooves; formed outside the mine.

Distribution. USA: CA, KS, * MA; Canada: AB (Sehgal 1971), BC (leaf mines and larvae only), ON (leaf mines and larvae only), SK; Europe. We have also seen leaf mines (including photographs posted to www.Bug- Guide.net) in CT, MD, MI, MN, NJ, NY, and OH.

Comments. This species is univoltine, with larvae mostly present in early May (as early as 29 March in New Jersey (Alexander 2012)); the latest date larvae have been reported is 3 June, in Ottawa (Spencer 1969). Our adults emerged three to five days after the puparia were removed from winter refrigeration.