Coccus, Linnaeus

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 : 50-52

Genus COCCUS Linnaeus

Coccus Linnaeus, 1758: 455 . Type species: Coccus hesperidum Linnaeus by subsequent designation. Calymmata Costa, 1828: 6 . Calypticus Costa, 1829: 8 . Taiwansaissetia Tao, Wong & Chang, 1983: 77 .

Diagnostic characters of the adult female: Live adult female oval / elongate / pyriform, usually flat to only slightly convex. Slide-mounted, body oval; dorsal surface membranous, gradually increasing in thickness at maturity, with small areolations present. Dorsum with short setae setose / spinose / clavate / cylindrical. Ventral surface with short setae. Pregenital disc-pores mainly each with 10 loculi, present around anogenital fold or extending anteriorly, even as far forward as head. Spiracular disc-pores each with 5 loculi. Preopercular pores present or absent. Dorsal tubular ducts and dorsal submarginal tubercles sometimes present (usually on submargin). Ventral tubular ducts present or absent; when present, located medially or occasionally forming a sparse to moderately dense submarginal band. Marginal setae simple or branched distally; stigmatic clefts deep or shallow, each containing 3 stigmatic setae. Antennae usually with 7 or 8 segments. Legs usually well developed, with or without a tibio-tarsal articulatory sclerosis. Anal cleft of moderate depth. Anal plates together quadrate, sometimes with subdiscal setae but never with discal setae. Anal ring with 6 or 8 setae.

Comments: Worldwide, 114 species are included in Coccus ( García Morales et al. 2016) ; two species are known from Iran ( Moghaddam 2013).

Key to species of Coccus in Iran, based on slide-mounted adult females.

1(0) Submarginal duct tubercles present. Antennae each with 7 segments. Ventral tubular ducts present medially near attachments of legs (especially on mesothorax), absent from abdominal submargin. Each claw without a denticle. Dorsal setae bluntly pointed............................................................................ hesperidum Linnaeus

- Submarginal duct tubercles absent. Antennae each with 8 segments. Ventral tubular ducts absent medially near attachments of mesothoracic legs but present on abdominal submargin. Each claw with a denticle. Dorsal setae sharply pointed.................................................................................... .. pseudomagnoliarum (Kuwana)