Valid Names Results

Chionaspis caudata Vea, 2012 (Diaspididae: Chionaspis)

Nomenclatural History

• Chionaspis caudata Vea 2012: 44-47. Type data: MEXICO; Oaxaca, Oaxaca, Hwy 175, 16°11'59"N, 96°31'30.9"W, 28/09/2007, on Pinus patulata longipedunculata, by R. Gwiazdowski and M. Dahlberg.. Holotype, female, by original designation Type depository: Mexico: Coleccion Entomologica, Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Mexico; accepted valid name

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• VeaGwNo2012: pp.53-54 ( Adult (F) ) []

Remarks

• Systematics: Chionaspis caudata Vea differs from other Chionaspis with the following combination of characters (Table 1): median lobes (L1) unyoked, parallelsided, with a single gland spine between them, subtended by a microduct; submedian microducts absent on abdominal segment 7; gland spine absent on abdominal segment 5; head square-shaped, body with an extended thorax relative to other pine-feeding Chionaspis. Chionaspis caudata Vea differs from the other species by the rather squareshaped head and noticeably longer body, the presence of a single gland spine subtended by one microduct between the median lobes, and the gland spine formula. The presence of the median gland spine is striking as this feature prevents this species from keying to the genus Chionaspis (or indeed any related genus) in available keys to genera; however, the phylogenetic analyses of Gwiazdowski et al. (2011) unambiguously place C. caudata Vea within Chionaspis.(Vea et al. 2012)
• Structure: All pine-feeding Chionaspis discussed here, including C. heterophyllae and C. pinifoliae, are indistinguishable by eye in the field. The adult female for all species possesses a white oystershell-shaped and slightly convex cover, with the amount of posterior expansion varying according to the diameter of host needles. Body elongate, color varying from yellow when immature to reddish brownish in specimens containing eggs, with lateral protrusion on the anterior abdominal segments. Found on needles.
• General Remarks: Detailed description, illustration and table of diagnostic morphological characters for six species of pine-feeding Chionaspis also in Vea et al. (2012).

Illustrations

Citations