Valid Names Results

Lobimargo williamsi Hardy & Gullan, 2011 (Eriococcidae: Lobimargo)

Nomenclatural History

• Lobimargo williamsi Hardy & Gullan 2011: 500, 528. Type data: AUSTRALIA: Victoria, Belgrave (37º54'S., 145º21'E), Sherbrooke Forest Park, 10/29/1978, by P.J. Gullan & D.J. Williams. Holotype, female, by original designation Type depository: Canberra: Australian National Insect Collection, CSIRO Entomology, Australia; accepted valid name

Common Names

Ecological Associates

Geographic Distribution

Keys

• Hodgso2020: pp.73-74 ( Adult (M) ) [some “Gondwanan” Eriococcidae]
• HardyBeGu2011: pp.507-508 ( Adult (F) ) [Key to the adult females of species of Lobimargo]
• HardyBeGu2011: pp.507-508 ( Adult (F) ) [species of Lobimargo]

Remarks

• Systematics: Lobimargo williamsi is the only species of Lobimargo in which the adult female has both minute sagittate and enlarged spinose dorsal setae. The adult female of L. williamsi is most similar to those of L. latrobeus and L. sagittisetus, both of which also have a cluster of loculate pores on the dorsum near the margin between the metathorax and abdominal segment I, multiple size classes of dorsal macrotubular ducts and an elongate pair of submedial setae on the ventral surface of each abdominal segment. (Hardy, et al., 2011) The adult male of L. williamsi is diagnosed by: (i) lacking anterior extensions of the postoccipital ridge; (ii) lacking capitate sensory setae on the antennae; (iii) having a large number of X-type pores on the anterior head surface; (vi) the apex of each tibia with dense cluster of about eight shorter spines in addition to two spurs; and (v) flagellate fleshy setae on legs and antennae. The adult male of L. williamsi can be distinguished from every known adult male of Opisthoscelis and Tanyscelis by having well-developed legs, with the length of the trochanter + femur of each leg greater than twice the width of the head (length of trochanter + femur subequal to width of head in Opisthoscelis and Tanyscelis). Adult males of Lachnodius eucalypti differ from those of L. williamsi by: (i) lacking an apical cluster of auxiliary spines of each tibia; (ii) having a one-segmented tarsus (two segmented in L. williamsi); (iii) having the apical antennal segment about half of the length of the penultimate segment (segments subequal in L. williamsi); and (iv) having a longitudinal band of scutal setae on each side of the body (scutal setae are in a loose transverse band in L. williamsi).The adult male of Cylindrococcus spiniferus Maskell also has numerous X-type pores on the face, but can be distinguished from those of L. williamsi by having: (i) nine-segmented antennae; (ii) elongate styles; and (iii) a well-developed metasternite, among other features (Hardy, et al., 2011)
• Structure: The adult male of L. williamsi is somewhat similar to Stibococcus cerinus but differs in having (i) many long fleshy setae, those on the antennae being much longer than the width of each segment (fleshy setae, if present on S. cerinus, very similar to hair-like setae and sparce, those on the antennae subequal in length to segment width), (ii) no capitate setae on antennae (present on S. cerinus) and (iii) no caudal extensions on abdominal segment VIII (present). (Hodgson, 2020)
• General Remarks: Deatiled description of both male and female in Hardy, et al., 2011

Illustrations

Citations