Eucalymnatus Cockerell in Cockerell & Parrott, 1901

Choi, Jinyeong, Soysouvanh, Pheophanh, Lee, Seunghwan & Hong, Ki-Jeong, 2018, Review of the family Coccidae (Hemiptera: Coccomorpha) in Laos, Zootaxa 4460 (1), pp. 1-62 : 34-35

Genus Eucalymnatus Cockerell in Cockerell & Parrott, 1901

Type species: Lecanium tessellatum Signoret, 1873 , by original designation.

Diagnosis. Polygonal sclerotized plates irregularly present on dorsum ( Fig. 30C ); ventral tubular ducts absent; legs each with a tibio-tarsal articulatory sclerosis ( Fig. 31G ) ( Hodgson 1994; Hamon & Williams 1984).

Remarks. Eucalymnatus comprises 11 described species, mostly restricted to Brazil, Guatemala and Guyana in the Neotropical region except for the cosmopolitan species, E. tessellatus . Mature adult females of the genus are easily recognized by the polygonal sclerotized plates on the dorsum ( Hodgson 1994; García Morales et al. 2016).

Figures

FIGURE 30. Eucalymnatus tessellatus (Signoret, 1873). A, female in life; B, slide-mounted adult female; C, polygonal plates; D, pregenital setae. Scale lines for B = 0.5 mm; C = 200 µm; D = 100 µm.

FIGURE 31. Eucalymnatus tessellatus (Signoret, 1873), adult female, from Williams & Watson (1990). A, dorsal tubercle; B, dorsal seta; C, dorsal microduct; D, anal plates; E, multilocular disc-pore; F, ventral microduct; G, leg; H, spiracular disc-pore; I, stigmatic spines and marginal setae; J, antenna.