Trabutina serpentina (Green)

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 : 134

Trabutina serpentina (Green)

( Fig. 61 , Plate 3 D , distribution map Fig. 70 L )

Naiacoccus serpentinus Green, 1919: 117 . Naiacoccus serpentinus minor Green, 1919: 118 .

Field characteristics: Found on shoots and branches. Live adult female with body 1.2‒3.0 mm long, secreting a long, cottony white, tubular ovisac that often forms a loop ( Danzig & Miller 1996). Eggs are pale yellow but turn red before hatching ( Green 1919).

Microscopic diagnosis: Slide-mounted adult female broadly oval to rotund. Anal lobes not developed. Antennae each with 6 segments. Legs well developed; hind leg with coxa and tibia swollen, each with translucent pores; tarsal digitules pointed at tip and longer than claw. Anal lobe cerarii distinguishable from other marginal setal clusters by presence of 4–8 conical setae with narrowed bases, 1‒4 longer setae without constricted bases, and uncon- centrated trilocular pores; C 17 and C 16 also sometimes distinguishable. Circulus absent. Ostioles present. Anal ring incomplete, V-shaped, bearing 6 setae.

Dorsum with setae becoming progressively shorter anteriorly. Setae surrounding anal ring numbering 17−30. Other body setae at posterior end of body conical to lanceolate. Multilocular disc pores present across many abdominal segments and sometimes on metathorax, most abundant laterally. Trilocular pores most abundant posteriorly near ostioles. Discoidal pores of 2 sizes: large pores, with thick irregular rims, conspicuous, anterior to anal ring; and small pores sparse in submarginal areas. Oral collar tubular ducts of 2 main sizes: small ducts present mostly in medial areas of abdomen, ducts increasing in size laterally to a larger type, on margins.

Venter with long flagellate setae. Multilocular disc pores each with 10 loculi, present in bands across most abdominal segments. Trilocular pores present mainly in submarginal areas. Discoidal pores most abundant on submargins. Oral collar ducts of 1 size, most ducts about same width as a trilocular pore or narrower, abundant on abdomen and present in clusters on thorax and head. Lobular swellings sometimes apparent near vulva.

Distribution: Trabutina serpentina has been recorded from 15 countries in the Palaearctic Region including Iran ( García Morales et al. 2016), where it has been recorded from Azarbaijan -e Gharbi, Azarbaijan -e Sharghi, Bushehr, Gilan, Khouzestan, Sistan & Balouchestan, and Zanjan provinces ( Moghaddam 2013b).

Host-plants: The species has been found on Tamarix spp. (Tamaricaceae) ( García Morales et al. 2016).

Economic importance: None in Iran.

Natural enemies: Not recorded in Iran.

Comments: The accompanying illustration is reproduced from Danzig & Miller (1996), page 32, Fig. II, with kind permission from the authors and the Editor of Israel Journal of Entomology.

Genus VRYBURGIA De Lotto

Vryburgia De Lotto, 1967: 21 . Type species: Pseudococcus bechuanae Brain , by original designation.

Principal characters: Body of adult female narrowly to broadly oval. Anal lobes normally membranous. Antennae each with 6‒9 segments. Legs well developed; claw with or without a denticle. Cerarii numbering 1–3 pairs on posterior segments of abdomen, absent from head. Anal lobe cerarii each with 2 conical setae, 1 or 2 auxiliary setae and a few trilocular pores. Multilocular disc pores present on venter. Quinquelocular pores absent. Ostioles present. Oral rim tubular ducts present or absent on dorsum, if absent, replaced by quite large oral collar tubular ducts. Oral collar ducts numerous, forming rows or groups on dorsum and venter.

Comments: Worldwide, 10 species are included in Vryburgia ( García Morales et al. 2016) ; two species are known from Iran ( Farahbakhsh 1961, Moghaddam 2015).

Key to species of Vryburgia in Iran

1(0) Antenna with 8 segments. Dorsal oral rim ducts present in single rows across all segments except abdominal segment VIII.................................................................................... amaryllidis (Bouché)

- Antenna with 9 segments. Dorsal oral rim ducts absent, replaced by quite wide oral collar ducts in single rows across all segments except abdominal segment VIII.................................................. succulentarum Williams

Figures

PLATE 3.A. Pseudococcus viburni (Signoret); B. Trabutina crassispinosa Borchsenius; C. Trabutina mannipara (Hemprich & Ehrenberg); D. Trabutina serpentina (Green); E. Vryburgia amaryllidis (Bouché); F. V. amaryllidis damage on Amaryllis sp. (Amaryllidaceae).

FIGURE 61. Adult female of Trabutina serpentina (Green).

FIGURE 70. Maps of species distributions in Iran. A. Planococcus vovae (Nasonov); B. Pseudococcus comstocki (Kuwana); C. Pseudococcus longispinus (Targioni Tozzetti); D. Pseudococcus viburni (Signoret); E. Rhodania aeluropi Williams & Moghaddam; F. Saccharicoccus sacchari (Cockerell); G. Spilococcus alhagii (Hall); H. Spilococcus mirzayansi (Moghaddam); I. Spilococcus williamsi sp. n.; J. Trabutina crassispinosa Borchsenius; K. Trabutina mannipara (Hemprich & Ehrenberg); L. Trabutina serpentina (Green).