Dysmicoccus brevipes (Cockerell)

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 : 45-48

Dysmicoccus brevipes (Cockerell)

( Fig. 14 , distribution map Fig. 67 A )

Dactylopius brevipes Cockerell. 1893a: 267 . Dactylopius (Pseudococcus) ananassae Kuwana, 1909: 162 . Pseudococcus missionum Cockerell, 1910: 113 . Pseudococcus palauensis Kanda, 1933: 135 . Pseudococcus cannae Green, 1934: 162 . Pseudococcus longirostralis James, 1936: 207 . Pseudococcus defluiteri Betrem, 1937: 43 . Pseudococcus pseudobrevipes Mamet, 1941: 58 .

Field characteristics: Usually found near the plant base or on exposed roots of grasses and herbaceous plants; can also occur underground on roots, e.g. on palms. Body of live adult female pink, coated with white mealy wax and with 17 pairs of slender wax projections around margins, these often rather untidy and all of similar, moderate lengths.

Microscopic diagnosis: Slide-mounted adult female oval to broadly oval. Antennae each with 8 segments. Legs well developed; hind leg with translucent pores abundant on dorsal surfaces of femur and tibia. Tarsal digitules pointed at tip and longer than claw. Cerarii numbering 17 pairs. Anal lobe cerarii each containing 2 conical setae, 6 or 7 auxiliary setae, and a compact group of trilocular pores, all situated on a more-or-less circular sclerotized area smaller than area of anal ring. Anterior cerarii each containing 2–4 conical setae, 3–5 auxiliary setae, and a compact group of trilocular pores. Circulus divided by an intersegmental line. Ostioles well developed.

Dorsum with slender stiff setae; setae on dorsomedial area of segment VIII (anterior to anal ring) obviously longer than those on segments VII and VI, and intermingled with large reticulated discoidal pores. Multilocular disc pores absent. Trilocular pores fairly numerous. Discoidal pores, each with a reticulated surface, of 2 sizes; large type, each larger than a trilocular pore, occurring medially on abdominal segments V – VIII; and smaller type, same size or smaller than a trilocular pore, fairly numerous, scattered. Oral collar tubular ducts absent .

Venter with normal setae, mostly shorter and slenderer than dorsal setae. Multilocular disc pores each with 12 loculi, present posterior to vulva and medially at posterior edges of abdominal segments VI and VII. Trilocular pores numerous. Discoidal pores of 1 size, each same diameter as a trilocular pore with a reticulated surface, fairly numerous, scattered. Each eye always with 1–4 adjacent small discoidal pores. Oral collar tubular ducts usually of 2 sizes: larger type present singly on margins of abdominal segments V – VII ; and slightly smaller type distributed across abdominal segments V and VI , also 1 or 2 present submarginally and laterally on segments VI and VII.

Distribution: Dysmicoccus brevipes has been recorded from 125 countries representing all zoogeographic Regions ( García Morales et al. 2016); in Iran, it is known from Sistan & Balouchestan province ( Moghaddam 1999).

Host-plants: The species has been recorded on host-plants in 148 genera belonging to 63 families ( García Morales et al. 2016); in Iran, it has been found on the roots of Medicago sativa (Fabaceae) ( Moghaddam 1999).

Economic importance: None in Iran.

Natural enemies: Not recorded in Iran.

Comments: The accompanying illustration is reproduced from Moghaddam (2013a), page 23, Fig. 10 , with kind permission from the Chief Editor of Zootaxa.

Figures

FIGURE 10. Adult female of Coccidohystrix burumandi Moghaddam.

FIGURE 14. Adult female of Dysmicoccus brevipes (Cockerell). © Magnolia Press, www.mapress.com/j/zt, reproduced with the copyright holder’s permission.

FIGURE 67. Maps of species distributions in Iran.A. Dysmicoccus brevipes (Cockerell); B. Dysmicoccus caspianensis Moghaddam; C. Dysmicoccus walkeri (Newstead); D. Dysmicoccus zagrosicus Moghaddam; E. Erimococcus kimmericus (Kiritshenko); F. Erimococcus talhouki (Matile-Ferrero); G. Eurycoccus tamariscus Williams; H. Exallomochlus balouchestanensis Moghaddam; I. Ferrisia virgata (Cockerell); J. Formicococcus robustus (Ezzat & McConnell); K. Kiritshenkella sacchari (Green); L. Maconellicoccus hirsutus (Green).