Sept. 1,1925 
Identification of the Mealybug 
495 
IV, 45; V, 57; VI, 34; VII, 43; VIII, 86; the second segment thus the longest; legs 
not unusual, hind coxae with pores near base, at least, claw rather stout, somewhat 
curved, claw digitules stouter than those of tarsus, both pairs exceeding the tip 
of the claw, tibia and femur about equal in length, tibia about three times length 
of tarsus; beak stout conical, about as broad at base as length; with only the two 
posterior pairs of cerarii with the spines developed, these with 2 stout conical 
spines accompanied by several triangular pores in each, and with a loose cluster 
of 4 to 5 setae outside the spines; location of some additional cerarii indicated by 
presence of 1 or 2 larger setae at appropriate place on body margin, but no other 
definite cerarii present; anal lobes, as such, not indicated, apical seta large, about 
196 ft long, without ventral chitinous thickening but with a ventral subapical 
seta about 90 n long; body with small triangular disk pores of the normal type, 
occurring both dorsally and ventrally in indistinct transverse bands of widely 
scattered pores, with circular multilocular disk pores in indefinite transverse 
bands of scattered pores in the posterior abdominal region, with a few pores 
distributed apparently indiscriminately over the midventral area as far anteriorly 
as around the base of the mouth parts, and with numerous short tubular ducts 
distributed much in the same fashion as the triangular pores, but most numerous 
and conspicuous along the body margin; body setae scattered, varying consider¬ 
ably in size, with large setae both dorsally and ventrally, more conspicuous on 
the head than elsewhere; anal ring not unusual, with the usual inner and outer 
bands of pores and normally 6 setae, the longest about 183 n) with a single, small, 
transversely oval, ventral cicatrix placed on the median line well back of the 
posterior legs. 
This species has been described from two specimens from the 
Maskell collection, one, the holotype, one of MasKelPs slides bearing 
the notation “Dactylopius calceotariae . From Danthonia (grass) 
(Stewart’s Island). Adult. Sept. 1880, W. M. M.,” the other 
mounted from the bottle of miscellaneous specimens labeled “Dacty¬ 
lopius calceolariae ,” but without further data, received from the 
Canterbury Museum. 
The holotype has been returned to New Zealand, and the paratype 
has been retained in the United States National collection of Coccidae. 
TbIONYMUS DIMINUTUS (LEONARDO (fig. 6) 
Adult female. —External appearance extensively described and figured by 
Maskell (11, p. 100) (as calceolariae) and by Leonardi (8 ); size apparently variable, 
maximum length as mounted 5 mm., maximum width 2.5 mm., but most examples 
smaller than this; antennae normally 8-segmented, average lengths of segments 
in microns about as follows: I, 72; II, 76; III, 50; IV, 41; V, 49; VI, 34; VII, 45; 
VIII, 96; legs not unusual, hind coxae with pores near base, lengths of this leg in 
microns: Coxa 215, trochanter 125, femur 243, tibia 268, tarsus 115, claw 35, 
without denticle, claw digitules thickened somewhat, tarsal slender, both ex¬ 
panded at apices and exceeding tip of claw; beak short conical, about 125 m long 
and 118 n wide at base, indistinctly 2-segmented; without recognizable cerarii 
anterior to the 3 or 4 posterior abdominal pairs, the two posterior each with 2 
spines, the antepenultimate with 2 spines or 1 spine and 1 spine-like seta or 2 
spine-like setae, the next with 2 spine-like setae or not evident; none of cerarii 
underlaid by chitinized thickenings, triangular pores somewhat more numerous 
around each pair of spines, but hardly definitely clustered; apical cerarii each with 
as many as 11 setae above and around the spines, possibly to be considered as 
associated with it, but not intimately, remaining developed cerarii with as many 
as 4 or 5 setae adjacent to, but not intimately associated with, the spines; anal 
lobes not protruding, apical setae stout, about 175 a* long, somewhat longer 
than those of anal ring (these about 130 ju), without any ventral chitinized thicken¬ 
ing; anal ring normal, with inner and outer pore rows and 6 setae; ventral cicatrix 
small, transversely oval, the posterior side often bulging more or less distinctly; 
with the usual types of pores present, the triangular type more or less uniformly 
distributed over both surfaces, the multilocular disk type likewise present on 
both surfaces, very abundant in the posterior ventral abdominal region, less 
abundant but still numerous over the whole of the remainder of the ventral 
surface, much fewer and more widely scattered over the dorsal surface; ducts 
reduced to a few of the short, small tubular sort along the body margin; body 
setae fairly large and conspicuous for the genus, longest near body margins, 
and longer beneath than above, varying considerably in size. 
