Liriomyza monoensis Spencer

Lonsdale, Owen, 2011, The Liriomyza (Agromyzidae: Schizophora: Diptera) of California 2850, Zootaxa 2850 (1), pp. 1-123 : 73-74

Liriomyza monoensis Spencer

Figs 155, 156

Liriomyza monoensis Spencer 1981: 251 . Spencer & Steyskal 1986: 125. Wing length 1.5mm (♂), 1.5mm (♀). Length of ultimate section of vein CuA 1 divided by penultimate section: 2.1– 2.6. Eye height divided by gena height: 3.5–4.9. Scutum shining.

Chaetotaxy: Two ori, two ors. Acrostichal setulae in four rows.

Colouration: Calypter margin and hairs greyish-brown. First flagellomere dark yellow, pedicel and scape slightly brownish; posterolateral corner of frons dark to base of outer vertical bristle and brown to region surrounding inner vertical; brown stripe from posterior margin of frons to base of posterior ors and faint stripe to base of anterior ors; back of head, clypeus and ocellar triangle dark brown. Scutum with complete yellow lateral band; laterotergites dark. Pleuron dark with dorsal suture of katepisternum and anepisternum yellow. Fore coxa brownish with basal half darker, mid and hind coxae brown and tibiae and tarsi dark brown; femora yellow with base brown, fore femur with dorsal mottling on basal ½–2/3 or with faint dorsal mark at 2/3 length.

Genitalia: Figs 155, 156 . Surstylus with single thin, elongate, curved ventroapical spine. From illustration in Spencer (1981): mesophallus and distiphallus separate, cylindrical, subequal in length and width, with combined length approximately that of basiphallus; mesophallus slightly narrowing apically; distiphallus with ventral suture, basal half darker and distal half enclosing narrow, smooth chamber.

Host. Unknown.

Range. USA. California [Mono, Siskiyou*].

Type material. Holotype, USA. California: Mono Co., 7mi E of Tioga Pass, 15.vii.1961, G.I. Stage, Type No. 14063 (1♂, CASC) ; Paratype, USA. California: Mono Co., same collection as holotype (1♀, EMEC) .

Additional material examined. USA. California: Siskiyou Co., Bear Basin , 7000’, 9.viii.1967, L. Eighme (1♂, CASC) .

Comments. The terminalia are most characteristic for this species—the spine on the surstylus is apical, curved and very elongate, and the mesophallus and distiphallus are thin, cylindrical and subequal in length. The distiphallus of the holotype was largely destroyed during the original dissection, and as such, has not been reillustrated here. The figure provided is from the original publication ( Spencer 1981). The only other known male was dissected to find the phallus missing.

Figures

FIGURES 152–156. Figs 152–154: Liriomyza minor Spencer, male genitalia; 152: phallus, ventral; 153: phallus left lateral; 154: external components, ventral. Figs 155–156: L. monoensis Spencer, male genitalia; 155: holotype phallus, left lateral and ventral, from original figures in Spencer (1981); 156: external components, ventral.