Chorizococcus viticola Kaydan & Kozár

MOGHADDAM, MASUMEH & WATSON, GILLIAN W., 2022, The Scale Insects Of Iran (Hemiptera: Coccomorpha) Part 2 The Mealybugs (Pseudococcidae And Rhizoecidae) And Putoidae, Zootaxa 5126 (1), pp. 1-169 : 36

Chorizococcus viticola Kaydan & Kozár

( Fig. 9 , distribution map Fig. 66 H )

Chorizococcus viticola Kaydan & Kozár in Fallahzadeh, Kaydan & Kozár, 2010: 158.

Field characteristics: Adult female body oval, light pink, with two white filaments at end of abdomen (Fallahzadeh et al. 2010).

Microscopic diagnosis: Slide-mounted adult female elongate oval. Anal lobes well developed. Antennae each with 8 segments. Legs well developed; hind leg with large translucent pores on tibia; tarsal digitules each pointed at tip and shorter than claw. Cerarii numbering 2 pairs, situated on last 2 abdominal segments; anal lobe cerarii each with 2 conical setae, 3−8 auxiliary setae and 34−49 trilocular pores. Circulus oval. Ostioles present.

Dorsum with long, stiff setae. Trilocular pores present throughout. Oral rim ducts present on head, thorax, and all abdominal segments except abdominal segment VIII. Oral collar tubular ducts present on segment VIII as a group on margin.

Venter with normal flagellate setae. Multilocular disc pores each with 10 loculi, present on posterior edges of abdominal segments IV−VIII + IX, not reaching to margin. Trilocular pores present throughout. Oral rim ducts present on margins of thorax and abdominal segments I and II. Oral collar tubular ducts usually present across abdominal segments II−VIII.

Distribution: Chorizococcus viticola is an Iranian species, recorded only from Fars province (Fallahzadeh et al. 2010).

Host-plants: The species has been collected on Vitis vinifera (Vitaceae) (Fallahzadeh et al. 2010).

Economic importance: In some parts of Fars province, C. viticola is the most important pest of grapevine. The damage caused by this pest has increased in recent years (Fallahzadeh et al. 2010), possibly in response to climate change.

Natural enemies: None recorded.

Comments: Chorizococcus viticola is similar to C. snellingi McKenzie in having a circulus and cerarii developed on abdominal segments VII and VIII, but differs by having translucent pores on the hind tibia only, whereas they are present only on the hind coxa in C. snellingi .

The accompanying illustration is reproduced from Fallahzadeh et al. (2010), page 177, Fig. 1 , with kind permission from Dr Fallahzadeh and the Chief Editor of Zootaxa.

Genus COCCIDOHYSTRIX Lindinger

Coccidohystrix Lindinger, 1943b: 219 . Echinococcus Balachowsky, 1936: 157 . Type species: Echinococcus echinatus Balachowsky by original designation. Seabrina Neves, 1943: 1 . Artemicoccus Balachowsky, 1953a: 147 .

Principal characters: Slide-mounted adult female elongate to broadly oval. Antennae each with 7–9 segments. Legs well developed; claw with a denticle. Tarsal digitules long and flagellate. Cerarii on numbering 16‒18 pairs, each cerarius formed by an elevated sclerotized prominence bearing groups of enlarged conical setae, several minute discoidal pores, and 1 or 2 spine-like setae. Similar prominences, with enlarged conical setae, also present elsewhere on dorsum. Circulus absent. Ostioles absent. Multilocular disc pores and quinquelocular pores present on venter. Trilocular pores present on dorsum and venter. Oral rim tubular ducts absent. Oral collar tubular ducts present. Anal ring normally situated at apex of abdomen, the ring bearing 6 setae ( Williams 2004).

Worldwide, 19 species are included in Coccidohystrix ( García Morales et al. 2016) ; one species is known from Iran (Moghaddam 2009).

Figures

FIGURE 1. Generalised morphology of an adult female mealybug (including two types of ceroris, a structure found only in the family Rhizoecidae). © The Trustees of the Natural History Museum, London, U.K.

FIGURE 9. Adult female of Chorizococcus viticola Kaydan & Kozár. © Magnolia Press, www.mapress.com/j/zt, reproduced with the copyright holder’s permission.

FIGURE 66. Maps of species distributions in Iran. A. Antonina crawi Cockerell; B. Antonina graminis (Maskell); C. Artemicoccus bispinus Borchsenius; D. Artemicoccus poacearum Moghaddam & Watson sp. n.; E. Brevennia (Brevennia) rehi (Lindinger); F. Ceroputo pilosellae Šulc; G. Chorizococcus pazoukii Moghaddam; H. Chorizococcus viticola Kaydan & Kozár; I. Coccidohystrix burumandi Moghaddam; J. Coccura circumscripta (Kiritshenko); K. Dysmicoccus angustifrons (Hall); L. Dysmicoccus boninsis (Kuwana).