Liriomyza paumensis Spencer

Lonsdale, Owen, 2011, The Liriomyza (Agromyzidae: Schizophora: Diptera) of California 2850, Zootaxa 2850 (1), pp. 1-123 : 82

Liriomyza paumensis Spencer

Figs 178–180

Liriomyza paumensis Spencer 1981: 255 . Spencer & Steyskal 1986: 117.

Wing length mm 1.3mm (♂), 1.7mm (♀). Length of ultimate section of vein CuA 1 divided by penultimate section: 2.8. Eye height divided by gena height: 3.8–4.0. Scutum subshining.

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

Colouration: Externally as described for darker L. artemisiae specimens except as follows: first flagellomere slightly larger with base only slightly paler on outer face and more yellowish on inner face (basal 2/5 of segment yellow in holotype); orbit yellow with brownish stripe approaching, or reaching posterior ori; sometimes only dorsomedial margin of katepisternum yellow; femora always yellow distoventrally.

Genitalia: Figs 178–180 . Surstylus with one long subapical spine. Paraphallus very thin and weakly-pigmented. Hypophallus well developed with short apical hairs. Mesophallus fused to distiphallus. Distiphallus slightly longer than wide, dorsum well sclerotized and thick, and internally spinulose apical chamber on distal 2/3 enclosing paired fringed processes. Blade of ejaculatory apodeme with darker margin and faint distal annulations.

Host. Unknown.

Range. USA. California [Los Angeles, San Diego, San Luis Obispo].

Type material. Holotype, USA. California: San Diego Co., Pauma Valley , 17.iv.1977, K.A. Spencer (1♂, USNM) ; Paratypes, USA. California: San Luis Obispo Co., La Panza Camp , 25.iv.1968, J.A. Chemsak (1♂, EMEC), La Panza Cp., 12mi NE POZO , 29.iv.1962, C.A. Toschi (1♀, EMEC) .

Comments. Aside from a number of minor colour differences, these specimens strongly resemble Liriomyza artemisiae and may represent the same species. The genitalia of the dissected males are also largely similar to those of darker L. artemisiae , although the phallus of one is preserved on an angle that makes it difficult to make a proper comparison.

Figures

FIGURES 175–180. Figs 175–177: Liriomyza nigrissima Spencer, male holotype genitalia; 175: phallus, ventral; 176: phallus, left lateral and ventral, and ejaculatory apodeme, from original figures in Spencer (1981); 177: external components, ventral. Figs 178–180: L. paumensis Spencer, male holotype genitalia; 178: external components, ventrolateral; 179: ejaculatory apodeme; 180: phallus, right lateral.