Liriomyza frigida Spencer

Lonsdale, Owen, 2011, The Liriomyza (Agromyzidae: Schizophora: Diptera) of California 2850, Zootaxa 2850 (1), pp. 1-123 : 51

Liriomyza frigida Spencer

Figs 100–103

Liriomyza frigida Spencer 1981: 234 . Spencer & Steyskal 1986: 116.

Wing length 1.3mm (♂), 1.2–1.3mm (♀). Vein dm-cu absent. Eye height divided by gena height: 3.8. Scutum subshining (holotype) to shining.

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

Colouration: Calypter margin and hairs grey. Head mostly light yellow with ocellar tubercle, clypeus, back of head and posterolateral region of frons to base of inner vertical bristle (slightly fading medially) dark brown; space behind tubercle yellow; lateral margin of frons brown with pigment extending to base of fronto-orbitals; first flagellomere, excluding basal margin, light brown, with basal half of inner surface yellow; venter of gena with light brown stripe. Scutum dark with complete lateral yellow stripe becoming lightly mottled with brown posteriorly; katatergite with light mottling; anatergite dark below scutellum, and paler lateral to scutellum with posterodorsal margin yellowish. Pleuron mostly dark with dorsal margin of anatergite yellow (margin irregular in female), anepimeron with yellow mottling, and dorsal margin of meron and katepisternum (excluding posterior corner) yellow. Base of coxae brown in females; coxae brown in male with distal half of fore coxa and apex of mid coxa yellow; femora with brown spot at base, dorsally at 2/3 length, and with and thin dorsal striations; tibiae and tarsi dark brown with base of fore and mid tibiae yellowish. Abdomen brown.

Genitalia: Figs 100–103 . Surstylus with one long subapical spine. Ejaculatory duct only slightly swollen apically. Paraphallus short and weakly sclerotized. Hypophallus well developed. Mesophallus slightly darker than, and fused to distiphallus, with point of attachment narrow. Distiphallus thin and with swollen apical chamber enclosing one pair of fringed structures. Ejaculatory apodeme relatively small with pileus ejaculatorius wide, truncated and thickened at ends; blade relatively narrow with dark submarginal band and striations.

Host. Unknown.

Range. USA. California [Alpine].

Type material. Holotype, USA. California: Alpine Co., Hope Valley , 7.viii.1948, sweeping, Lot 91-20, K.E. Frick (1♂ [head missing], CASC) ; Paratypes examined, USA. California: Alpine Co., Hope Valley , sweeping, 8.viii.1948, Lot No. 91-30, K.E. Frick (1♀, CASC), 8.viii.1948, Lot No. 91-30 (1♀, CASC) .

Comments. Liriomyza frigida is a distinct species with no vein dm-cu and a small wing (1.2–1.3mm). The holotype is in poor condition, missing its head and all legs excluding the right fore leg and the left hind leg.

Figures

FIGURES 96–103. Figs 96–99: Liriomyza frickella Spencer, male holotype genitalia; 96: phallus, left lateral and ventral, from original figure in Spencer (1981); 97: phallus, ventral; 98: ejaculatory apodeme; 99: external components, ventral. Figs 100– 103: L. frigida Spencer, male holotype genitalia; 100: external components, ventral; 101: ejaculatory apodeme; 102: phallus, left lateral and ventral, from original figures in Spencer (1981); 103: phallus, left lateral.