Liriomyza venturensis Spencer

Lonsdale, Owen, 2011, The Liriomyza (Agromyzidae: Schizophora: Diptera) of California 2850, Zootaxa 2850 (1), pp. 1-123 : 111-113

Liriomyza venturensis Spencer

Figs 245–248

Liriomyza venturensis Spencer 1981: 286 . Spencer & Steyskal 1986: 132.

Wing length 1.5mm (♂). Female paratypes not examined. Length of ultimate section of vein CuA 1 divided by penultimate section: 4.1. Eye height divided by gena height: 3.6. Scutum subshining.

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

Colouration: Calypter margin and hairs brown. Head light yellow with antenna yellow, and back of head, ocellar triangle and clypeus dark brown; posterolateral corner of frons dark brown to base of outer vertical bristle and light brown to base of inner vertical. Scutum with complete lateral yellow stripe; katatergite yellow; anatergite dark brown below scutellum and brown lateral to scutellum with dorsum yellow. Anepisternum with broad oblique brown stripe; anepimeron with brown anterior and posterior mottling; meron brown on ventral 1/3; katepisternum brown on ventral 2/3 with small yellow emargination below bristle. Base of fore coxa and basal half of mid and hind coxae brown; base of femora (broadest on hind femur) and scraper on hind femur brown; tibiae brown with mid tibia slightly paler on distal and basal 1/3; tarsi brown, becoming paler to base. Abdominal colour unknown.

Genitalia: Figs 245–248 . Surstylus with one posterodistal spine. Paraphallus narrow and pale. Hypophallus short, strongly curved at midpoint. Mesophallus approximately as long as high, venter poorly sclerotized, and separate from distiphallus. Distiphallus cup-shaped, not much longer than mesophallus, and pale with base slightly darker and tapered; ovate in lateral view and with distal margin bulging in lateral view. Ejaculatory apodeme with blade pale, narrow and rounded.

Variation: UCR material as described above except as follows: wing length 1.3mm (♂), 1.6–1.7mm (♂); eye height divided by gena height 4.5; body less robust and pigment faded; distiphallus slightly larger; abdominal tergites becoming yellowish laterally and posteriorly .

Host. Unknown; tentatively-included material reared from Aster (Asteraceae) .

Range. USA. California [Los Angeles*[?], Santa Barbara[?], Ventura].

Type material. Holotype, USA. California: Ventura Co., mouth of Ventura River , 24.iv.1966, R. L. Langston, Type No. 14065 (1♂, CASC).

Tentatively-identified material: USA. California: Los Angeles Co., Altadena , 31.vii.1945, x Aster, R.H. Smith (1♂ 2♀, UCR) .

Comments. The UCR material is only tentatively included in this species because of the smaller male wing size, faded colouration and slightly larger distiphallus. See comments for Liriomyza trixivora .

Figures

FIGURES 245–251. Figs 245–248: Liriomyza venturensis Spencer, male holotype genitalia; 245: ejaculatory apodeme; 246: external components, ventral; 247: phallus, right lateral; 248: holotype phallus, left lateral and ventral, from original illustrations in Spencer (1981). Figs 249–251: L. venegasiae Spencer, male holotype genitalia; 249: external components, ventral; 250: phallus, ventral; 251: phallus, left lateral and ventral, from original illustrations in Spencer (1981).