SUPPLEMENT - Hindawi Publishing Corporation · 2019. 8. 1. · September x895. SUPPLEMENT TO PSYCItE. As it runs over the ground, this insect looks extremely like a bit of thistle-down

September x895. SUPPLEMENT TO PSYCItE.

As it runs over the ground, this insectlooks extremely like a bit of thistle-downblown by a gentle breeze. The resemblanceis so extraordinary, that it is difficult torealize that it is an insect until it is actuallyin the killing-bottle. It proceeds in a zigzag

jerky manner, so increasing the illusion.What is the purpose of this mimicry, I donot know; these creatures possess powerfulstings, and most of the allied forms seem tobe warningly colored--usually contrasts ofblack and red. T. 29. A. Ckll.

IV, NEw SPECIES OF COCCIDAE.

BY T. D. A. COCK:ERELI..

Aspidiotus hartii, n. sp.- scales irreg-ular, subcircular to oval, about i mm. diam.,moderately convex, dull brownish-gray, witha slight purplish tint; first skin partly cov-ered or entirely exposed, shining pale straw-color, nearly central. When removed, thescales leave a conspicuous white mark, withno black ring.

scale colored like that of the , small,elongate, with the exuviae near one end.

brown, becoming pale lemon yellowwhen boiled in soda. 5 groups of ventralglands, median of about 4, cephalolaterals9, caudolaterals 6 to 7. Anal orifice posteriorto level of caudolateral glands, but somedistance from hind end. No long tubularglands at bases of lobes. Two pairs of lobesonly; median large with parallel sides andgently rounded subtruncate ends, slightlydiverging, not contiguous, obscurely notchedat end towards outer side. Second lobessimilar in shape, but much smaller. Tworather stout branched plates between themedian lobes, and two between Ist and 2ndlobes. Margin cephalad of 2nd lobe withfirst three stout strongly branched platesclose together, then three equally long butnot so stout and only slightly branchedplates fllrther apart. Then two very slendersmall plates, then a long interval, then themargin coarsely serrate, with about 6 serraotions.

I-lab. Trinidad, West Indies, in greatnumbers on tubers of yam. Sent by Mr.Hart, of the Royal Botanic Gardens. Theoccurrence of an Aspidiotus on yams was

hardly expected; though Mr. Barber hacsent me from Antigua a new Lecanlum (L.batatae Ckll. ined.) on sweet potato tubers.The-present insect is allied to Asbidiotussacckari Ckll., I893.

Aspidiotus sphaerioides, n. sp. ? scalecircular, rather over ram. diam., in num-bers 0n the leaf, moderately convex, darkreddish-brown, with the part covering theexuviae indicated by a pale raised ring.When rubbed, the exuviae are uncovered andappear shining black. Removed from theplant, the scale leaves a whitish patch, sur-rounded by a blackish ring.

pale yellow, circular, mouth-parts aboutas far fi’om anterior margin as their length.Anterior margin with a row of about 9 strongspines or stout hairs, such as have seen inno other species. Anal orifice oval, a fairdistance from hind end, but posterior to levelof caudolateral groups of glands. 5 groupsof ventral glands, caudolaterals of 3 cepha-lolaterals 4, median 3.Three pairs of well-developed lobes, small

but distinct, about equal in size, rounded,.with a slight tendency to be notched on eachside. Branched plates, hardly longer thanthe lobes, between them. Margin cephalaffof 3rd lobe very coarsely serrate, with fivelarge serrations, the bases of these all fringedwith numerous tubular glands. Long tubu-lar glands at bases of lobes; those cephaladof median lobes, and in the interval between2nd and 3rd lobes much the longest; thatcephalad of 3rd lobe next longest.Hab. On leaves of New Zealand flax,

SUtz’PZEMENT 7"0 PST’CftE. [September x895.

Louisiana (exact locality not known) sentby Mr. E. M. Ehrhorn. This is a species ofneotropical affinities, and must have attackedthe New Zealand flax since the introductionof the latter into this country as an orna-mental plant. It cannot be A..hormiiBreme, which has a white scale. In itsblack exuviae it resembles A. vitis, fromwhich it differs in other respects. Of theNew Zealand species it only comes near A.sot]orae, with its 5 groups of glands andbranched plates, but that is different in itslobes. It is very near to A. bowrey, butthat has 4 groups of glands, differs some-what in the tubular glands, and also mark-edly in the shape of the scale. In the scarit leaves it suggests A. ersonatus, which isotherwise different. It resembles, also, A.yuccae Ckll. ined, but that has a differentscale, and leaves a scar without any blackring. It is also allied to A. obscurus, but inthe long glands rather resembles A. 3erseae,from which it differs in the grouped glands.

Dactylopius aphyllonis, n. sp.-- 3 mm.long, of the general shape and appearanceof D. cirri, but without any caudal or lateraltufts. Dorsum covered more or less withmealy white secretion; color of body whenfreed from secretion olive-brown, antennaeand legs small and pale, inconspicuous.Boiled in caustic soda it gives a blood redcolor, after the manner of D. indicus and29. zvalkerLAntennae 7-jointed; 7 much longest, a

little longer than 5+6; 5 shortest, 4 and 6equal, next longest; 2 and 3 equal, nextlongest, then i. Formula 7I (32 (46) 5,Joints with sparse whorls of hairs. Color ofantennae very pale yellowish. In some ex-amples, 4 is a little longer than 6, and aboutas long as 3, which is not quite as long as2; the formula is then 712 (34) 65.Legs pale brown, ordinary, femur about

as long as tibia; tarsus hardly half as longas tibia. Claw large, stout, blunt, littlecurved; digitules filiform. Mentum elon-gate, with several short bristles. Posterior

tubercles obsolete, the place of each indi-cated by a large bristle. Anal ring small,with 6 hairs, maach smaller than bristle oflobe.

ttab. Wenatchee, Washington State, onA]tyllonfascculatum. Collected by Prof.C. V. Piper. By its antennae and legs, thisis clearly not D. trifoliLEriococcus neglectus n. sp.- Enclosed

in a somewhat irregular waxy pyriform scale,nearly 3 ram. long, shiny, pale ochreous notin the least divided into plates. The scalesor sacs, when boiled in soda, are seen tobe really composed of very closely-feltedthreads. oval or subpyriform, pale pink-ish, about I mm. long; when boiled in sodait becomes bright crimson.Antennae brown, joints distinct, 6 in num-

ber, 3 much longest, rather longer than 4+ 5,which are subequal and shortest, 5 beinga little the shorter. 6 rather longer than4, but hardly so long as 2. about as longas 2. Formula 3 (12) 645. In another ex-ample, 2 is clearly shorter than 6.Legs small, pale brown. Trochanter with

two bristles. Femur moderately swollen,with a short bristle on its inner side. Tibiathick, stouter than tarsus, but aboutshorter. Claw large, very little curved.Tarsal digitules long, filiform. Digitules ofclaw filiform. Posterior tubercles low androunded, with several bristles, one longerthan the rest; also round gland orifices.Anal ring small, chitinous, without bristles(or bristles easily deciduous?). Mentumobscurely timerous. Derm colorless. Eggspale lemon yellow.Hab. Las Cruces, N. M., on stems of

Atriples caneseens, looking very like thePhoradendron seeds so commonly seen ontrees in this vicinity. The plants are thicklyinfested by them, but I had entirely over-looked them until recently, notwithstandingthat I pass within a few feet of them on myway to and from College. The insect ispeculiar for its waxy scale, and might forma new subgenus.

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SUPPLEMENT - Hindawi Publishing Corporation · 2019. 8. 1. · September x895. SUPPLEMENT TO PSYCItE. As it runs over the ground, this insect looks extremely like a bit of thistle-down