Phenacoccus bromi 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 : 91-92

Phenacoccus bromi Moghaddam

( Fig. 38 , Plate 2 B , distribution map Fig. 69 A )

Phenacoccus bromi Moghaddam, 2018: 185 .

Field characteristics: Body broadly oval, greyish, covered with white powdery wax, with 1 pair of short waxy filaments at posterior end of body; body segmentation apparent.

Microscopic diagnosis: Slide-mounted adult female oval to broadly oval. Anal lobes moderately developed. Antennae each with 9 segments. Legs well developed; tarsal and claw digitules knobbed; translucent pores difficult to observe, present on hind tibia; claw with a distinct denticle; tarsal digitules pointed at tip and shorter than claw. Cerarii numbering 18 pairs; anal lobe cerarii (C 18) each with 5 lanceolate setae, 4 or 5 spine-like auxiliary setae and 12‒18 trilocular pores, all situated on a sclerotized area; penultimate cerarii (C 17) each with 3 or 4 lanceolate setae and 4 or 5 trilocular pores; anterior cerarii each with 2 lanceolate setae and 2 trilocular pores, except for frontal and ocular cerarii (C 1 and C 3) each with 3 setae. Circulus oval, sclerotized, situated between abdominal segments III and IV, divided by an intersegmental line. Ostioles well developed. Anal ring with 2 rows pores and 6 setae.

Dorsum with lanceolate setae, some with a trilocular pore situated near setal collar; some minute setae present. Trilocular pores and minute discoidal pores scattered throughout. Oral collar tubular ducts and multilocular disc pores absent.

Venter with normal flagellate setae, except for some short lanceolate setae present on margins. Multilocular disc pores and quinquelocular pores absent. Trilocular pores and minute discoidal pores scattered throughout. Oral collar tubular ducts few, numbering 1‒3 on abdominal segments VI‒VIII.

Distribution: Phenacoccus bromi is known only from Iran, Markazi province ( Moghaddam 2018).

Host-plants: The species has been recorded on Bromus sp. (Poaceae) ( Moghaddam 2018).

Economic importance: None.

Natural enemies: None recorded.

Comments: Phenacoccus bromi is an unusual species of Phenacoccus in that it lacks multilocular and quinquelocular pores, and has tarsal digitules that are capitate.

The accompanying illustration is reproduced from Moghaddam (2018), page 186, Fig. 4 , with kind permission from the Chief Editor of Zootaxa.

Figures

PLATE 2. A. Phenacoccus aceris (Signoret); B. Phenacoccus bromi Moghaddam; C. Phenacoccus poae Moghaddam; D. Phenacoccus solenopsis Tinsley; E. Planococcus citri (Risso); F. Planococcus kraunhiae (Kuwana); G. Planococcus vovae (Nasonov); H. Pseudococcus comstocki (Kuwana).

FIGURE 4. Adult female of Artemicoccus bispinus Borchsenius.

FIGURE 38. Adult female of Phenacoccus bromi Moghaddam. © Magnolia Press, www.mapress.com/j/zt, reproduced with the copyright holder’s permission.

FIGURE 69. Maps of species distributions in Iran. A. Phenacoccus bromi Moghaddam; B. Phenacoccus daganiae Bodenheimer; C. Phenacoccus hordei (Lindeman); D. Phenacoccus insularis Danzig; E. Phenacoccus poae Moghaddam; F. Phenacoccus pumilus Kiritshenko; G. Phenacoccus solani Ferris; H. Phenacoccus solenopsis Tinsley; I. Phenacoccus transcaucasicus Hadzibejli; J. Planococcus citri (Risso); K. Planococcus ficus (Signoret); L. Planococcus kraunhiae (Kuwana).