Valid Names Results

Ferrisia williamsi Kaydan & Gullan, 2012 (Pseudococcidae: Ferrisia)

Nomenclatural History

• Ferrisia williamsi Kaydan & Gullan 2012: 56-58. Type data: COLOMBIA: Quindio, Parque Nacional del Café, on bract of inflorescence of Heliconia sp., 7/30/2004, by T. Kondo. Holotype, female, by original designation Type depository: Davis: The Bohart Museum of Entomology, University of California, California, USA; accepted valid name Illustr.

Common Names

Ecological Associates

Hosts:

Families: 4 | Genera: 6

Geographic Distribution

Keys

• TanakaLe2025: pp.297 ( Adult (F) ) [Species of Ferrisia based on adult females]
• PachecKaGe2016a: pp.72 ( Adult (F) ) [Ferrisia from the Neotropical Region]
• KaydanGu2012: pp.11-12 ( Adult (F) ) [Key to species of Ferrisia based on adult females]

Remarks

• Systematics: urn:lsid:zoobank.org:act:84AB7D42-7FB6-4660-B919-3D5FD9B604AD

  Adult females of F. williamsi from Colombia are most similar to F. cristinae from Argentina and the two species are difficult to distinguish morphologically, but in F. williamsi any minute discoidal pores associated with the ventral oral-collar ducts always touch the rim of duct opening and are larger than those in F. cristinae (in F. cristinae, discoidal pores associated with ventral ducts often do not touch the duct rim); furthermore, the translucent pores on the hind coxa of F. williamsi are mostly 2.0-3.0 µm in diameter (mostly 0.5-2.0 µm in F. cristinae). F. williamsi differs from F. kondoi by having scattered translucent pores on the hind coxa (none on the coxa of F. kondoi), fewer trilocular pores on each anal lobe (36-50 in F. williamsi; 58-62 in F. kondoi), and usually fewer small oral-collar tubular ducts in each cluster on the ventral margins of the posterior abdominal segments with mostly =6 on each side of each of segments VII and VIII (6-25 on each side of VII and 8-21 on each side of VIII in F. kondoi). The adult female of F. williamsi differs from that of F. virgata in the position of the discoidal pores, having 1 or 2 pores adjacent to the opening of most dorsal enlarged ducts and ventral oral-collar tubular ducts (discoidal pores never adjacent to duct openings in F. virgata). F. williamsi can be separated from F. milleri and . ecuadorensis by the absence of clusters of small oral-collar tubular ducts on the head, thorax and anterior abdominal segments (clusters present on all body segments in F. milleri and all abdominal segments in F. ecuadorensis). (Kaydan & Gullan, 2012) The live mature adult female of F. williamsi from Colombia has a distinctive dorsal pattern of wax that readily distinguishes it from the females of other species for which the live appearance is known. (Kaydan & Gullan, 2012)

• Structure: Ferrisia williamsi can be diagnosed by the following combination of features (based on type females only): presence of a few (0-10, usually =6, per segment) small oral-collar tubular ducts usually scattered or clustered on ventral margins of last 2-3 abdominal segments; ventral oral-collar tubular ducts with/without 1-2 minute discoidal pores, a few with 2 contiguous elliptical to elongate triangular pores touching rim of duct opening (if with discoidal pores, duct opening in slightly sclerotised area); dorsal enlarged tubular ducts totalling 100-120 throughout dorsum, with 1 or 2 circular to oval discoidal pores usually adjacent to rim of each duct opening and at least a few adjacent as a double pore; number of multilocular disc-pores on venter of abdominal segments as follows: segment VI (2-5), VII (12-16), and VIII + IX (12-21); anal lobe cerarii each with 2 conical setae; both pairs of ostioles present and pairs well developed; translucent pores scattered on dorsal surface of hind coxa. (Kaydan & Gullan, 2012)
• General Remarks: Detailed desscription and illustration in Kaydan & Gullan, 2012.

Illustrations

Citations