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).