Valid Names Results

Lachnodius brimblecombei Beardsley, Gullan & Hardy, 2019 (Eriococcidae: Lachnodius)

Nomenclatural History

• Lachnodius brimblecombei Beardsley, Gullan & Hardy 2019: 51. Type data: AUSTRALIA: Queensland, Redland Bay, adult female, ex pit gall in young twig of Eucalyptus micrantha, 8/2/1937, by AR Brimblecombe,. Holotype, female, Type depository: Brisbane: Queensland Museum, Queensland, Australia; accepted valid name Notes: Paratypes: 15 second-instar females (on three slides, including two on same slide as holotype), five second-instar males (on two slides with second-instar females): same data as holotype; two adult females: Eucalyptus sp., Glasshouse Mts., Queensland, 12/20/1935, AR Brimblecombe Illustr.

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• HardyBeGu2019: pp.50-51 ( Adult (F) ) [Species of Lachnodius]

Remarks

• Systematics: http://zoobank.org/5A129F1F-3598-461D-9E50-50D4F8D3715D A.R. Brimblecombe recognized this species and used the manuscript name ‘Lachnodius geniculatus’ to refer to it in his dissertation. The slide-mounted adult female of L. brimblecombei is most similar to that of L. lectularius. Each has a marginal fringe of close-set setae, and the dorsum densely beset with macrotubular ducts of a single type, none of which have a seta touching the dermal orifice. In life the two are easy to distinguish. The adult female of L. brimblecombei induces a deep stem or bud gall with considerable swelling of the surrounding tissue that covers a portion of the female’s dorsum.. If the gall occurs on the stem, it causes the stem to bend, often sharply. The adult female of L. lectularius also induces a gall on the stem or bud of the host, but the gall does not cover any portion of the female’s dorsum, and if on a stem does not make it crooked. Slide-mounted specimens of L. brimblecombei can be distinguished from those of L.lectularius by having (1) a dense marginal band of quinquelocular pores on the venter (absent in L. lectularius) and (2) the marginal setae longer than the anal ring setae (marginal setae shorter than anal ring setae in L. lectularius). The habitat of the Victorian specimens of L. brimblecombei, which develop in galls formed on flower buds, is different from that of the type specimens from Queensland. (Hardy, et al., 2019)
• Structure: Gall of adult female covers portion of dorsum; adult female with marginal fringe of close-set setae, each longer than anal ring setae; one size class of dorsal macrotubular ducts. (Hardy, et al., 2019) Body outline circular to oval; length 2.6–7.3 mm (4.9 mm for holotype), greatest width 2.3–4.9 mm (3.8 mm for holotype). Eyes 43–58 μm wide, on margin. Antennae seven-segmented. Second-instar female slide-mounted specimen moderately elongate oval to broadly oval; length 1.9–3.0 mm, width 0.8–1.1 mm. Antennae six-segmented, short (230 μm total length), basally broad, becoming narrower toward apex. Second-instar male slide-mounted specimens moderately elongate-oval; length 1.2–1.5 mm. Antennae 7-segmented, ca. 280 μm long, slender, segment III 30–40 μm wide. Legs normal, slender, all segments present with tibiae 1.7–1.9 times length of tarsi; tarsal claws normally developed. . (Hardy, et al., 2019)
• General Remarks: Detailed description and illustration in Hardy, et al., 2019.

Illustrations

Citations