Dysmicoccus zagrosicus Moghaddam

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 : 49-52

Dysmicoccus zagrosicus Moghaddam

( Fig.17 , distribution map Fig. 68 D )

Dysmicoccus zagrosicus Moghaddam, 2018: 183 .

Field characteristics: Not recorded.

Microscopic diagnosis: Slide-mounted adult female oval to broadly oval. Anal lobes well developed. Antennae each with 8 segments. Legs well developed; hind leg with a few inconspicuous translucent pores on femur and tibia. Tarsal digitules not knobbed; claw digitules knobbed and longer than claw. Cerarii numbering 7 pairs, all on abdominal segments, absent from thoracic segments and head. Anal lobe cerarii each containing 2 enlarged conical setae, about 6 auxiliary setae, and 12‒18 trilocular pores, all situated on a sclerotized area smaller than anal ring. Penultimate cerarii (C 17) lightly sclerotized, each with 2 conical setae shorter than those in anal lobe cerarii, about 5 auxiliary setae, and 4 or 5 trilocular pores. Circulus absent. Ostioles well developed. Anal ring with 2 rows of pores and bearing 6 setae.

Dorsum with slender flagellate setae. Trilocular pores evenly distributed. Discoidal pores scattered throughout. Oral collar tubular ducts of 2 sizes: most ducts present in groups of 3, usually with 2 large and 1 small type together; large type ducts also present singly between duct groups.

Venter with normal flagellate setae. Multilocular pores present in single to double rows at posterior edges of abdominal segments VI and VII, at anterior edge of segment VIII, also on segment IX; and present in submarginal areas of segments III ‒ V. Trilocular pores distributed in a regular arrangement. Discoidal pores minute, scattered. Oral collar tubular ducts of 2 sizes, same as those on dorsum: small type present in rows across abdominal segments, sparsely present in median areas of head and thorax, also in groups of 3 (each group consisting of 2 large-type and 1 small-type ducts) on margins of head, thorax and abdominal segments, also on medial areas of body .

Distribution: Dysmicoccus zagrosicus is an Iranian species that has been recorded from Lorestan province ( Moghaddam 2018).

Host-plants: The species was collected on Lactuca sp. (Asteraceae) ( Moghaddam 2018).

Economic importance: None.

Natural enemies: Not recorded.

Comments: Dysmicoccus zagrosicus differs from D. caspianensis in having (character-states of D. caspianensis in brackets): (i) multilocular disc pores present on submargins of segments IV and V (absent), and (ii) multilocular disc pores absent from behind anterior coxa (present).

The accompanying illustration is reproduced from Moghaddam (2018), page 184, Fig. 2 , with kind permission from the Chief Editor of Zootaxa.

Genus ERIMOCOCCUS Ezzat

Erimococcus Ezzat, 1966: 169 . Type species: Phenacoccus limoniastri Priesner & Hosny by monotypy and original designation.

Principal characters: Live adult female covered with white powdery wax and forming a woolly, white wax ovisac (Kaydan 2015). Slide-mounted adult female elongate oval to broadly oval, membranous. Antennae each with 8 or 9 segments. Legs well developed, claw with a denticle. Posterior spiracles always larger than anterior spiracles. Cerarii numbering 17 or 18 pairs, or with fewer than 8 recognisable pairs. Circulus present. Both pairs of ostioles well developed. Multilocular disc pores each with a single ring of 12 loculi, present on or absent from dorsum; always present on venter, on posterior abdominal segments, especially around vulva, but sometimes also on thorax and head. Quinquelocular pores, if present, either present medially on thorax or scattered throughout. Trilocular pores on dorsum scattered, often slightly larger than ventral trilocular pores. Oral collar tubular ducts forming clusters, each formed of a pair of ducts of 2 sizes; clusters arranged in transverse rows across body segments. Ventral oral collar tubular ducts of 1, 2 or 3 sizes, each differing in length and width; clusters of multilocular disc pores and ducts concentrated in submarginal zone (Kaydan 2015).

Comments: According to the generic concept above, all these species can be separated from Peliococcus by having: (i) enlarged setae on the dorsum each lacking a trilocular pore near the basal socket and not situated on an elevated area, and (ii) each dorsal pore / duct cluster usually containing 2 sizes of oral collar duct (Kaydan 2015).

Worldwide, seven species are included in Erimococcus ( García Morales et al. 2016) ; two species are known from Iran ( Asadeh & Mossadegh 1993a, Moghaddam 2013a).

Key to species of Erimococcus in Iran

1(0) Cerarii numbering 6 or 7 pairs, on abdominal segments only. Quinquelocular pores absent from venter or with very few around mouthparts..................................................................... .. talhouki (Matile-Ferrero)

- Cerarii numbering 18 pairs, around entire body. Quinquelocular pores abundant on venter of head, thorax and abdomen.................................................................................... kimmericus (Kirichenko)

Figures

FIGURE 2. Adult female of Antonina crawi Cockerell.

FIGURE 17. Adult female of Dysmicoccus zagrosicus Moghaddam. © Magnolia Press, www.mapress.com/j/zt, reproduced with the copyright holder’s permission.

FIGURE 68. Maps of species distributions in Iran. A. Mirococcus inermis (Hall); B. Nipaecoccus viridis (Newstead); C. Paracoccus burnerae (Brain); D. Paracoccus ficus Moghaddam; E. Peliococcopsis priesneri (Laing); F. Peliococcus chersonensis (Kiritshenko); G. Peliococcus marrubii (Kiritshenko); H. Peliococcus turanicus (Kiritshenko); I. Pelionella grassiana (Goux); J. Phenacoccus aceris (Signoret); K. Phenacoccus arthrophyti Archangelskaya; L. Phenacoccus betae Moghaddam.