Australian Biological Resources Study

Australian Faunal Directory

Museums

Regional Maps

Species Lachnodius eucalypti (Maskell, 1892)

Redgum Pit Scale

 

Distribution

States

Australian Capital Territory, New South Wales, Northern Territory, Queensland, South Australia, Tasmania, Victoria, Western Australia


IBRA and IMCRA regions (map not available)

IBRA

ACT, NSW, NT, Qld, SA, Tas, Vic, WA: Central Kimberley (CK), Eyre Yorke Block (EYB), NSW North Coast (NNC), NSW South Western Slopes (NSS), Riverina (RIV), South East Corner (SEC), South Eastern Highlands (SEH), South Eastern Queensland (SEQ), Tasmanian South East (TSE), Victorian Volcanic Plain (VVP)

Ecological Descriptors

Sap-feeder.

 

Systematics

Slide-mounted adult female with: marginal fringe with mixture of enlarged setae and hair-like setae; antennae 7-segmented; anal ring with pores and about 20 setae; tubular ducts without cup-like structure; multilocular pores present (see Morrison & Morrison 1922).

Biology

The female attaches herself to the upper surface of the leaf, causing a circular depression in the center of a reddish blotch in the tissue of the leaf. The scale fits into this pit, the dorsal surface raised a little above the rim showing transverse markings covered with fine dull white cottony secretion (see Froggatt 1917).

General

Original description and illustration by Maskell (1892); subsequent description and illustration by Morrison & Morrison (1922).

Structure

Adult females congregated in masses of white cotton between sheets of bark. Adult females red or yellowish brown. First-instar nymphs yellowish brown, congregated sometimes in very great numbers on the bark of host, mingled with thin white cotton or meal, subcircular in form. Male pupae congregated in sacs of white loose cotton, mixed with those of the females and first instars or sometimes in masses by themselves. Adult male reddish brown (see Maskell 1892).

 

History of changes

Note that this list may be incomplete for dates prior to September 2013.
Published As part of group Action Date Action Type Compiler(s)
05-Jun-2024 COCCOIDEA 11-Dec-2023 MODIFIED Dr Vivian Sandoval (ABRS)
05-Jun-2024 ERIOCOCCIDAE 01-Mar-2019 MODIFIED
21-Nov-2012 01-May-2014 MODIFIED
29-Jun-2012 29-Jun-2012 MODIFIED
12-Feb-2010 (import)