Acanthococcus isacanthus Danzig

Moghaddam, Masumeh & Watson, Gillian W., 2024, The Scale Insects Of Iran (Hemiptera: Coccomorpha) Part 3 The Soft Scales (Coccidae) And Other Families, Zootaxa 5542 (1), pp. 1-202 : 112-115

Acanthococcus isacanthus Danzig

( Fig. 50 , distribution map Fig. 88C )

Acanthococcus isacanthus Danzig, 1975: 45 .

Field characteristics: Body of live adult female ovoid, brown, about 2 mm long. Ovisac white, with slight transverse ribs and waxy spines on margin.

Microscopic diagnosis: Slide-mounted body of adult female oval, tapering posteriorly. Antennae each with 7 segments, with segment III of similar length to segments II and IV. Frontal lobes present. Eyes situated on margins. Legs small; each hind coxa and femur with spinulae on anterior surfaces; hind coxa without translucent pores; tarsus longer than tibia; tibia elongate, not enlarged, with 4 setae (median seta absent); tarsal and claw (not illustrated) digitules all slightly knobbed, longer than claw; each claw with a denticle. Anal lobes prominent, each lobe with acute apex, heavily sclerotized, with numerous teeth on mesad margin; with 3 dorsal enlarged setae and 3 ventral slender hair-like setae, and a suranal seta. Anal ring dorsal, incomplete (with anterior margin open), with pores rather irregularly arranged and bearing 6 setae. Cauda present.

Dorsum with enlarged setae normally of 3 sizes: each segment with 2 or 3 large setae on each margin, each seta less than 2x as long as a dorsal enlarged seta; medial area of abdominal segment VIII without enlarged setae. Macrotubular ducts present throughout. Microtubular ducts numerous.

Venter with hair-like setae elongate; enlarged setae of smallest size, present along body margin. Apical labial segment with 5 pairs of long setae and 1 shorter apical pair. Quinquelocular pores numerous throughout. Macrotubular ducts of 2 sizes: (i) larger size numerous along body margin; and (ii) smaller size fewer, present in medial or sublateral areas. Microtubular ducts absent. Cruciform pores present along lateral margins.

Distribution: Acanthococcus isacanthus is a Palaearctic species, known from China (Henan, Shaanxi, Shanxi), North and South Korea, Russia (Primor’ye Kray) and Iran, Kermanshah province ( García Morales et al. 2016, Torabi et al. 2010).

Host-plants: The scale has been recorded on three host-plant species belonging to the families Fabaceae , Rosaceae and Ulmaceae ( García Morales et al. 2016) . In Iran, it was collected on Ulmus spp. ( Ulmaceae ) ( Torabi et al. 2010).

Economic importance: Not known as a pest in Iran.

Natural enemies: None recorded in Iran.

Figures

FIGURE 50. Adult female of Acanthococcus isacanthus Danzig, reproduced from Kozár et al. (2013), page 117, fig. 44 (after Danzig (1975) with modifications), published by the Hungarian Academy of Sciences, Budapest, Hungary.

FIGURE 88. Distribution maps of scale insect species in Iran covered in this work. A, Acanthococcus aceris Signoret; B, Acanthococus costatus Danzig; C, Acanthococcus isacanthus Danzig; D, Acantholecanium haloxyloni (Hall); E, Acanthopulvinaria orientalis (Nasonov); F, Anapulvinaria pistaciae (Bodenheimer); G, Anophococcus abaii (Danzig); H, Anophococcus cingulatus (Kiritchenko); I, Anophococcus insignis (Newstead); J, Anophococcus kondarensis (Borchsenius); K, Anophococcus sanguinairensis (Goux); L, Antecerococcus longipilosus (Archangelskaya).