Phytomyza verticillatae Kulp

Figs 796-799

Phytomyza verticillatae Kulp, 1968: 25. Spencer and Stegmaier 1973: 123; Spencer and Steyskal 1986b: 214; Griffiths and Piercey-Normore 1995: 23; Scheffer and Wiegmann 2000: 249; Lonsdale and Scheffer 2011: 1201; Scheffer et al. 2021: 62.

Description.

As described for P. ilicicola except as follows:

Wing length 1.5-1.9 mm (♂), 1.7-2.0 mm (♀). Eye height divided by gena height: 4.3-6.0.

Chaetotaxy: Anterior ori minute. Four to five scattered rows of acrostichal setulae.

Colouration: Parafacial and side of face dark grey, centre of face yellowish. Posterolateral margin of frons dark to base of inner vertical seta; dark spot sometimes extending along eye margin to level of posterior ori and occasionally extending from margin to surround base of all fronto-orbitals. Legs slightly whitish with mid tibia sometimes paler.

Genitalia: (Figs 796-799) Surstylus short and tapered. Epandrial process relatively broad. Sclerite of hypophallus ill-defined, darkest near leading margin, but entire lateral and ventral surface of hypophallus lightly sclerotised to form an irregular cup. Paraphalli narrow, curved, diverging. Mesophallus ~ 11 × longer than wide at midpoint, apex broader, clearer, and U-shaped. Arms of distiphallus broadly separate, weakly diverging, and not much more than 1/2 length of mesophallus.

Hosts.

Aquifoliaceae - Ilex verticillata, I. mucronata .

Distribution.

USA: AL, DC, FL, MA, MD, ME, MI, MN, NY, PA, TN, TX, VA, WV.

Type material.

Holotype: USA. DC: Washington, 6.vii.1964, L.A. Kulp, Type No. 67428 (1♂, USNM).

Additional material examined.

See Lonsdale and Scheffer (2011).