Coccus gymnospori ( Green, 1908 )

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 : 27

Coccus gymnospori ( Green, 1908)

( Figs 22 , 23 )

Lecanium gymnospori Green, 1908: 29 .

Diagnosis. Dorsum with setae cylindrical, blunt apically ( Fig. 23D ); tubular ducts sparsely present in submarginal areas ( Fig. 23C ); duct tubercles present ( Fig. 23A ); and preopercular pores present anterior to anal plates ( Fig. 23E ). Marginal setae spinose, with pointed or slightly fimbriate apices ( Fig. 23M ). Venter with multilocular discpores each usually with 8–10 loculi ( Fig. 23G ); tubular ducts each with a narrow inner ductule, a few present between mesocoxae, and around meta-, meso-, and procoxa ( Figs 22D , 23L ); pregenital setae numbering 3 pairs; antenna 8 segmented ( Figs 22C ); and legs each with a tibio-tarsal articulatory sclerosis ( Figs 22E , 23I ) (partially adopted from Ben-Dov 1981; Avasthi & Shafee 1991).

Material examined. 3 ♀♀, LAOS, Salakham-nua Village, Hadxayfong Dist., Vientiane Capital, 30.iv.2015, coll. J.Y. Choi, on Mangifera indica L. ( Anacardiaceae ); 5 ♀♀, Phou Khao Khuay National Bio-Diversity Conservation Area, Thaphabath Dist., Bolikhamsai Prov., 4.v.2015, on Dalbergia cochinchinensis Pierre ex Laness. (Fabaceae) (same collector).

Hosts. Gymnosporia montana (Celastraceae) ( Avasthi & Shafee, 1991).

Distribution. Oriental Region ( India and Sri Lanka) ( Avasthi & Shafee, 1991); Laos (new country record).

Economic importance. Coccus gymnospori has not yet been recorded as an economically important pest.

Remarks. Coccus gymnospori is related to C. elatensis Ben-Dov , C. hesperidum Linnaeus and C. moestus De Lotto. Ben-Dov (1981) differentiated C. gymnospori from the other species using the following combination of characters: (i) the presence of 3 pairs of pregenital setae, (ii) antenna 8 segmented, (iii) dorsal tubular ducts shorter than or equal to length of ventral tubular ducts, and (iv) preopercular pores numbering 6–22 in a group.

Figures

FIGURE 22. Coccus gymnospori (Green, 1908). A, adult females in life; B, slide-mounted adult female; C, antenna; D, ventral tubular ducts between mesocoxae; E, leg (Arrow indicates a tibio-tarsal articulatory sclerosis). Scale lines for B = 0.5 mm; C, E = 100 µm; D = 10 µm.

FIGURE 23. Coccus gymnospori (Green, 1908), adult female, from Ben-Dov (1981). A, dorsal tubercle; B, dorsal microduct; C, dorsal tubular duct; D, dorsal seta; E, preopercular pore; F, anal plates; G, multilocular disc-pore; H, ventral microduct; I, leg; J, ventral seta; K, spiracular disc-pore; L, ventral tubular duct; M, stigmatic spines and marginal setae.