Lonicerae russoi Gagné, 2016

Gagné, Raymond J., 2016, Three new genera and three new species of Nearctic Lasiopteridi (Diptera: Cecidomyiidae: Cecidomyiinae) from Asteraceae and Caprifoliaceae, and the tribe Rhopalomyiini subsumed under Oligotrophini, Zootaxa 4158 (3), pp. 403-418 : 413

Lonicerae russoi Gagné , new species

Figs 5 , 19–31 .

Description. Adult: Wing ( Fig. 5 ) length: male 3.7–3.9 (n=3, avg.=3.8); female 3.7–3.9 mm (n=5, avg.=3.8). Head as in Figs. 19–20 , palpus 2-segmented, antennal flagellomeres as in Figs 21–22 . Anepimeron with 28–32 setae (n=5). Male terminalia as in Figs 26–27 . Female abdomen as in Figs 25 , 31 .

Pupa. Anterior segments ( Fig. 28 ) as in the generic description.

Larva, third instar ( Figs 29–30 ): Length, 3.5 mm (n=1). Spatula as in Fig. 29 . Papillae as for generic description.

Material examined. HOLOTYPE: male, from Lonicera hispidula, Alameda Co. , California, 22.ii.2005, R. Russo . Paratypes: 2 males, 5 females, 2 pupae, 1 pupal exuviae, and 1 larva, same data as holotype .

Etymology. This species is named for Ronald A. Russo in recognition of his contributions to the study of galls of western North America. Formerly Chief Naturalist, East Bay Regional Park District, Alameda and Contra Costa Counties in California, he now resides in Bellingham, Washington. He is the author of Field Guide to Plant Galls of California and other Western States ( Russo 2007 ).

Distribution. The type specimens were reared from galls found in Alameda Co., California. R. Russo (in litt.) found similar galls also in Mendocino Co., California.

Life history. Lonicerae russoi is responsible for a green, leafy rosette bud gall ( Fig. 1 , this paper, and plate 238 of Russo (2007)) on Lonicera hispidula . Russo (2007) reported that galls usually appear several together at the tips of shoots, but may occur singly also. Individual galls may be 10 mm high by 8 in diameter and the clusters 30 mm in diameter. Individual leaves or bracts covering the galls are about 3 mm wide. White hairs protrude from edges of the bracts and more densely from the center of each gall. The individual larval chambers are 4 mm long by 2 mm in diameter. Larvae were pupating in late February when the galls were found and adults emerged in late February to early March. The gall is one of at least three distinct bud galls on Lonicera spp. in California ( Russo 2007 ), including that of L. lonicera ( Fig. 2 , this paper; also Fig. 241, Gagné (1989) and plate 236, Russo (2007)), from L. subspicata in southern California.

Figures

FIGURES 4 – 6. Wings. 1, Helianthecis capitum. 2, Lonicerae russoi. 3, Chiosperma turgidum. Line = 1 mm.

FIGURES 19 – 27. Lonicerae russoi. 19, Head (frontal, flagella removed). 20, Labella and palpi (detail). 21, Male third flagellomere (ventral). 22, Female third flagellomere (ventral). 23, Claw and empodium (lateral). 24, Acropod (mesal). 25, End of ovipositor (dorsolateral). 26, Male terminalia (dorsal, one gonopod removed). 27, Mediobasal gonocoxal lobes and aedeagus (dorsal).

FIGURES 28 – 30. Lonicerae russoi. 28, Pupal anterior parts (ventral). 29, Larval spatula and associated papillae. 30, Larval eighth and terminal segments (dorsal).

FIGURES 31 – 32. Female abdomens, end of fourth segment to cerci (dorsolateral). 31, Lonicerae russoi. 32, Chiosperma turgidum. Letter a: position of lateral setae on fifth tergite, at midlength on L. russoi, farther anteriad on C. turgidum; b: presence of scales on L. russoi, their absence on C. turgidum; c: weakly sclerotized area of seventh sternite anteriad of the posterior setal rows; d: lateral sclerite of protrusible part of the ovipositor. Line = 0.5 mm.

FIGURES 1 – 3. Galls. 1, Lonicerae russoi on Lonicera hispidula (photo by R. Russo). 2, Lonicerae lonicera on Lonicera subspicata (photo by R. Russo). 3, Chiosperma turgidum on Symphoricarpos albus (photo by M. Althaus). Line = actual size of gall.