9 
A. albopunctatus, now regarded as a variety of perniciosus and A. 
andromelas (fig. 4), both Japanese, do not differ from perniciosus by any 
marked structuralcharacters; andromelasis easily recognized by its scale, 
A. obscurus, Which Mr. G. McCarthy reports as occurring rarely on 
peach in North Carolina (N.C. Exp. Sta., Bull. 138), belongs to a differ- 
ent section of the genus from the above, and is distinguished at once 
by the dark gray scale, with exuvie appearing piteh-black when rubbed. 
There are five groups of ventral glands, the median of as many as six. 
The figure of A. crawii (fig. 4) illustrates the group of rapax, convexus, 
cydonia, ete. (subg. Hemiberlesia Ckll.), in which the median lobes are 
large but the others practically obsolete, or at best very minute. The 
plates are branched and crowded up toward the median lobes, making 
quite a dense fringe. 
The following table of the grouped ventral glands may be found 
useful: 
l 
: | Cephalo-| Caudo- 
Median. | laterals. | laterals. 
ADOT ILUCTONLS HST e eet See moe aecie ae mince iam anis cise acc ciasstesainecinneccmacmecs | None. None. None. 
ANS EDOVROTIG UT ar ododote eee Bae Be SBE HOB AE OBOE EOE EASED CBC COeL ABE none None. None. None. 
JAC OPIN sac acigAS bed bpeSOe Gab SOS Gan AS ASR U oor eGd aoe Coo Se tee eee seeen nee _ None. | None. None. 
PAULO LMS TONE se oe oes Bor ciacemcee secs Onn MON arse yee NL 0to4! 7 to 16 4to 8 
FAN ONO CS Umer rere ie mh ret ae ates Mate Ret Lia(djniatciots, occ Seeibic ed wine es oeleetres 10.3 || 3 to. 17 3 to 5 
AMO SERE@OIMnUs (ILO PHM PIANC) ones seiselae ce ses cie'scosseeime te ocean ee 6 11 | 9 
PAM CONDOMUG Rape acini Ses Se claws Sais asm ss oes n(aininlse sielealasisinjs vies saunas Seles Sas None. TA\ 4 
JN CED EINE asocd = SCC O BES Re ass SU Roe) DOCU SO CDD SOO Seen eSooS dos ScerenSsessca5 0to6| 6 to 14 5 to 8 
VAMC Y CONG) Seria == -.|; None. | 8to 9 5 to 7 
PAW OT 201 Po Ie a ete meee oie vem icle cleleisteni= ial s stale aie oicice Siaisiniee = ciajei= None. 5 4 
A. uve (on grapevine) 0to2] 4to 9 3 to 8 
PAR OU SCID Sess ie eee mine ae ci mile ole wisis le slenlae ete we oiele = cystine ee esanss i. 6 12 8 
PACU UD ROLL RU ere reer isitciiete® oie Sas ones hone eclelnine sc ee aie soaels = sista tials None. | 6 to 7 3 to 4 
ASpatapinus\(onicherry in) tally) 22 ---2-2-----3-4-e=--- ---- - seas - == Otoz| 4to 9 7 to 10 
THE SUBGENERA AND SECTIONS OF ASPIDIOTUS. 
Professor Comstock, in his second Cornell report (1883), gave a table 
of the American species of Aspidiotus known at that time. It ran 
somewhat as follows: 
A. Last segment of female with six groups of ventral glands. This includes 4. 
sabalis, which is now placed in the genus Comstockiella. 
AA. Last segment of female with less than six groups of ventral glands. 
B. Last segment of female with three pairs of well-developed lobes, and with 
elongated thickenings of the body wall terminating at or near the bases of 
the lobes. Thisis the subgenus Chrysomphalus Ashmead (type A. fieus), with 
the related groups Melanaspis n. subg. (type A. obscurus), Mycetaspis n. subg. 
(type A. personatus), and Aonidiella Berl. & Leon. (type A. aurantii). 
BB. Second and third pairs of lobes smaller or wanting; caudal margin with two 
pairs of incisions, with thickened edges. This includes the subg. Diaspidio- 
tus Berl. & Leon., with the related group Hemiberlesia (type A. rapax). 
BBB. With neither elongated thickenings of the body wall nor incisions with thick- 
ened edges. This includes subg. Aspidiotus s. str. (type A. nerii); Comstock 
also placed here 4. parlatorioides, which belongs to Pseudoparlatoria. A figure 
is given of a Mexican specimen of this, showing some of the details more 
precisely than that of Comstock. It will be seen that it differs widely from 
any Aspidiotus in the characters of the female as well as those of the scale. 
Another species of this genus, P. ostreata, is very destructive to Acalypha in 
Jamaica. 
