Coccus latioperculatum ( Green, 1922 )

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 : 31

Coccus latioperculatum ( Green, 1922)

( Figs 26 , 27 )

Lecanium latioperculatum Green, 1922: 1022 .

Diagnosis. Dorsum with setae cylindrical, blunt apically ( Fig. 27D ); tubular ducts and duct tubercles absent; preopercular pores present anterior to anal plates ( Fig. 27E ). Marginal setae short, with pointed, bifid or fimbriate apices ( Figs 26C , 27B ). Venter with multilocular disc-pores each usually with 10 loculi ( Fig. 27G ); tubular ducts each with a narrow inner ductule, a few present around each pro- and mesocoxa ( Figs 26D , 27K ); pregenital setae numbering 3 pairs; antenna 7 segmented ( Fig. 27L ); and legs each with a tibio-tarsal articulatory sclerosis ( Figs 26E , 27H ) (partially adopted from Avasthi & Shafee 1991).

Material examined. 33 ♀♀, LAOS, Chanthabouly Dist., Vientiane Capital, 28.x.2014, coll. J.Y. Choi, on Mangifera indica L. ( Anacardiaceae ); 11 ♀♀, Nan Dist., Sayaboury Prov., 31.x.2014 (same collector and host plant).

Hosts. Anacardium occidentale ; Mangifera indica and Spondias pinnata (Anacardiaceae) ( Ali 1971; Avasthi & Shafee 1991).

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

Economic importance. Coccus latioperculatum has not been recorded as a serious pest.

Remarks. Coccus latioperculatum is similar to C. formicarii (Green) , which also lacks dorsal tubercles; however, C. latioperculatum is easily distinguished from C. formicarii by the following morphological differences (character states of C. gymnospori in parenthesis): (i) dorsal setae cylindrical (sharply spinose), (ii) marginal setae with bifid or fimbriate apices (with pointed apices), and (iii) legs with tibio-tarsal articulatory scleroses (without tibio-tarsal articulatory scleroses).

Figures

FIGURE 26. Coccus latioperculatum (Green, 1922). A, population of females in life; B, slide-mounted adult female; C, marginal setae; D, ventral tubular ducts near mesocoxa; E, leg. Scale lines for B = 0.5 mm; C = 50 µm; D = 10 µm; E = 100 µm.

FIGURE 27. Coccus latioperculatum (Green, 1922), adult female, from Avasthi & Shafee (1991). A, dermal areolations; B, marginal setae; C1-2, stigmatic spines; D, dorsal setae; E, preopercular pore; F, anal plates; G, multilocular disc-pore; H, leg; I, spiracular disc-pore; J, ventral seta; K, ventral tubular duct; L, antenna.