A review of the genus Chrysomphalus Ashmead (Hemiptera: Coccoidea: Diaspididae) with descriptions of a new species and a new, related genus Smith-Pardo, Allan H. Evans, Gregory A. Dooley, John W. Zootaxa 2012 3570 1 24 3PJW 340494 [537,728,1704,1730] Insecta Diaspididae Chrysomphalus Animalia Hemiptera 4 5 Arthropoda genus    1a. Perivulvar pores absent (or with only 1 pair in some individuals of  C. variabilis)................................ 2  1b. Perivulvar pores present............................................................................. 7   2a (1a). Prosoma heavily sclerotized; paraphysis between L2 and L3 with a double apex; perivulvar pores absent or with only 1 pair; only known on  Santalumin Australia.....................................  C. variabilisMcKenzie(in part)  2b. Prosoma not heavily sclerotized; paraphysis between L2 and L3 with a single apex; perivulvar pores absent.......... 3   3a (2b). L1 with rounded apices; thoracic tubercle present or absent; only known on  Eucalyptusin Australia................. 4  3b. L1 with trilobed apices; thoracic tubercle absent; not known from Australianor on  Eucalyptus..................... 5   4a (3a). Thoracic tubercle present; second pygidial furrow each with 10-14 ducts in double rows.....  C. rubribullatusBrimblecombe  4b. Thoracic tubercle absent; second pygidial furrow with less than 10 ducts in a single row..................................................................................................  C. trifasciculatusBrimblecombe   5a (3b). Plates anterior to L3 with clavate apices; L3 notched once on each side; only known on  Prunusin China...................................................................................................   C. mume(Tang)  5b. Plates anterior to L3 with fringed apices; L3 with two or more lateral notches on each side........................ 6   6a (5b). L1 tri-lobed, with a notch on each side; prepygidial segments A1-A3 each with 2 macroducts; on orchids in the Philippines.............................................................................  C. nulliporus(McKenzie)  6b. L1 bi-lobed, with a notch only on lateral margin; prepygidial segments A1-A3 apparently lacking macroducts; only known on tea (  Thea) in Madagascar..........................................................  C. aberrans(Mamet)   7a (1b). Prosoma heavily sclerotized, beset with fine irregular lines; only known from Australia.......................... 8  7b. Prosoma membranous, without sclerotized fine irregular lines; widespread species or those known from other regions.. 9   8a (7a). Thoracic tubercle absent; perivulvar pore groups each with no more than 2 pores; second and third pygidial furrows each with 10–14 ducts in single or double rows; first pygidial plate anterior to L3 entire; only known on  Santalumfrom Australia.....................................................................  C. variabilisMcKenzie(in part)  8b. Thoracic tubercle present; perivulvar pore groups each with 2 to 4 pores; second and third pygidial furrows with 14–16 ducts in double or triple rows; first pygidial plate anterior to L3 forked; various hosts in Australia..  C. fodiens(Maskell)   9a (7b). First two plates anterior to L3 with clavate apices....................................................... 10  9b. First two plates anterior to L3 with fringed apices...................................................... 13   10a (9a). Prepygidial segments lacking a dorsal cluster of 4 or more ducts; numerous hosts, widespread...................................................................................................  C. dictyospermi(Morgan)  10b. Prepygidial segments with at least one segment with a cluster of 4 or more dorsal ducts........................ 11   11a (10b). Prepygidial segments A2 andA3 each with a submarginal dorsal cluster of ducts; pygidial furrows two and three each with ducts forming a single irregular row; numerous hosts, widespread..........................  C. bifasciculatusFerris  11b. Only prepygidial segment A2 with a submarginal dorsal cluster of ducts; pygidial furrows two and three each with ducts forming 2 to 3 rows............................................................................... 12   12a (11b). Test including exuvia uniformly reddish-brown in color; numerous hosts, widespread..........  C. pinnulifer(Maskell)  12b. Test variable from pale black to purplish in color, with only exuvia reddish-brown in color; numerous hosts, widespread................................................................................  C. diversicolor(Green)   13a (9b). Prepygidial segment A2 with a dorsal cluster of 5 or more ducts along lateral margin; numerous hosts, widespread.....................................................................................  C. aonidum(Linnaeus)  13b. Prepygidial segment A2 without a dorsal cluster of 5 or more ducts along lateral margin........................ 14   14a (13a). Second and third pygidial furrows each with 12-20 ducts; L1 notched only on outer margin...................... 15  14b. Second and third pygidial furrows each with less than 10 ducts; L1 notched on both margins or only on outer margin...... 16   15a (14a). Prepygidial segments A1, A2 and A3 with 3, 2 and 1 macroduct, respectively; on palms ( Arecaceae) and  Pandanusfrom Oriental and Pacific Island regions....................................................  C. propsimusBanks  15b. Prepygidial segment A3 with 2 or 3 macroducts; A2 with 0 or 1 macroducts and A1 without macroducts; on  Nepenthesfrom Thailand.................................................................  C. nepenthivorus sp. nov.   16a (14b). Pygidium with 3 fringed plates present between L3 and L4, each with a pair of terminal processes; anal opening separated from base of L1 by less than 1.5x its diameter; paraphysis arising from medial angle of L1 subequal in length of that arising from anterior base of L1; on  Cocosand  Litseafrom Seychelles..............................  C. ansei(Green)  16b. Pygidium with 4 fringed plates present between setae marking positions of L3 and L4, each without a terminal process; anal opening separated from base of L1 by more than 2xits diameter; paraphysis arising from medial margin of L1 about two-thirds length of that arising from lateral angle of L1; on Fabaceaein China....................  C. silvestriiChou