Valid Names Results

Lachnodius hirsutus (Froggatt, 1921) (Eriococcidae: Lachnodius)

Nomenclatural History

• Pseudopsylla hirsutus Froggatt 1921b: 6. Type data: AUSTRALIA: Northern Territory, Darwin, on Eucalyptus sp., by G.F. Hill. Lectotype, female, Type depository: Orange: Agricultural Scientific Collections Unit, Orange Agricultural Institute, NSW, Australia; accepted valid name Notes: One slide bearing two specimens and a section of twig bearing four empty galls constitute the type material. The slide was labeled in Froggatt's handwriting as "Pseudopsylla solida n.s. & gen." This was undoubtably the material for L. hirsutus and was an error on Froggatt's part. The name P. solida was never published. Beardsley remounted the single original slide and put each of the two adult females on a separate slide, and he dsignated a lectotype. (Beardsley, 1982a). Illustr.
• Lachnodius hirsutus (Froggatt, 1921); Beardsley 1982a: 31-35. change of combination Illustr.

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

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

Remarks

• Systematics: Slide-mounted adult female body outline circular to oval; length 3.2–6.8 mm, greatest width 3.1–6.1 mm. Eyes 75–105 μm wide, on margin. Antennae six-segmented (Hardy, et al., 2019) Body with: marginal fringe of several hundred hair-like setae; legs well developed, tibia and tarsi with enlarged setae on inner margin; anal ring ventral, with pores and 6 or 7 small setae; tubular ducts without cup-like structure; multilocular pores few, present near spiracles (Beardsley, 1982a). Because of the similarity of the species epithets "hirtus" and "hirsutus" these species have sometimes been confused. The adult female of L. hirsutus can be distinguished from all other species by the combination of 6-segmented antennae, extremely long marginal setae (350–450 μm long), and the scarcity of quinquelocular pores, which occur only near the spiracular openings. The anal ring ofL. hirsutus is also unique among Lachnodius species; it has six or fewer ring setae present, with only a few minute pores near the base of each seta. (Hardy, et al., 2018)
• Structure: Adult female deep red, legs and antennae brownish yellow. Body convex above, concave below (Froggatt, 1921b Gall of adult female covers portion of dorsum; venter hirsute; anal ring with few setae and pores; microtubular ducts absent.(Hardy, et al., 2019) At female maturity, the gall of L. hirsutus probably splits open at the apex to reveal the female, because enclosed globular twig galls of nymphs have been collected in association with galls resembling those of L. hirsutus (Gullan et al. 2005).
• General Remarks: Original description and illustration by Froggatt (1921b). Subsequent taxonomic discussion by Beardsley (1982a). Redescription and illustration in Hardy, et al., 2019.

Illustrations

Citations