Valid Names Results

Acanthococcus christopherus (Foldi & Kozar, 2007) (Eriococcidae: Acanthococcus)

Nomenclatural History

• Eriococcus christopherus Foldi & Kozar 2007: 53-54. Type data: BRAZIL: Rio Grande do Sul, Itaimbéznho, parc Natonal de Asparados, on Eugenia jaboticaba (Myrtaceae), 11/16/1985, by I. Foldi. Holotype, female, Type depository: Paris: Museum National d'Histoire naturelle, France; accepted valid name Illustr.
• Acanthococcus christopherus (Foldi & Kozar, 2007); Kozár & Konczné Benedicty 2008: 117-144. change of combination

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• GonzalClJu2020: pp.7-5 ( Adult (F) ) [Acanthococcus species from Brazil]
• FoldiKo2007: pp.62 ( Adult (F) ) [Key to the species of Eriococcus discussed here from South America] Key as: (Eriococcus christopherus

Remarks

• Systematics: A. christopherus differs from the other species of Acanthococcus found in south America in the characteristic arrangement of the dorsal spinose setae, in 2 longitudinal medial bands and 9 transverse rows.
• Structure: Adult female body outline elongate oval, 2.3-2.5 mm long, 1.2-1.3 mm wide. Antenna 7 segmented; antennal segments with few setae; segment III almost parallel-sided, without setae; apical segment with one seta, and three sensory falcate setae. Frontal lobes well developed, about as long as width of scape. Eyes near margin on venter. Venter: Labium 3-segmented, basal segment very small, bearing 2 pairs of setae, middle segment large, with one pair of setae and a;ical segment bearing 4 pairs of seetae. Legs well developed, with large translucent pores on each metathoracic coxa and febur. tarsal digitules knobbed. Each trochanger with a long seta, and with two oval campaniform pores on each side. Each claw with a distinct dentible. Legs with few hair=like setae. Coxae with about 90-115 large translucent pores; femur with about 10-15 translucent pores dorsally at distal end. Disc pores with 5 loculi, distributed in bands across all abdominal segments, and scattered on thorax and head; also frequent laterad to each spiracle. Each spiracle with peritreme. Hair like setae scattered throughout arranged segmentally on abdomen. Microtubular ducts absent. Macrotubular ducts variable in length, sparse on all segments. Cruciform pores few, present in a submarginal band from head posteriorly to about abdominal segment III. Anal lobes membranous, each about twice as long as broad, with 3 hair-like setae. Margin: Marginal spinose setae similar to dorsal setae, each straight but smaller, very few present as a sparse band anteriorly, becoming absent on abdominal segments VI-VIII. Dorsum: Dorsal setae all spine-like, each spinose seta varying in size and shape, sometimes slightly curved, each with a large basal socket. Dorsal spinose setae forming 2 longibudinal medial bands and 9 transverse bands. Macrotubular ducts similar to those on venter, sparse, present throughout. Microtubular ducts with a dentral septa but no sclerotised pore opening, scattered throughout. Disc pores absent. Anal ring with pores and with 8 hairlike setae. Anal lobes each with two spinose setae along inner margin, and one spinose seta on outer margin, similar in size to those on dorsum, plus a long apical seta. Median sclerotised plate absent.
• General Remarks: Detailed description and illustration in Foldi & Kozár (2007)

Illustrations

Citations