ALEYRODES ERRANS, new species

II. ALEYRODES CORONATUS ( Quaintance

16. ALEYRODES ERRANS, new species

Plate

XXX,

^{figs. 20-21.}

Eg<j.

—

^{Size,about0.21}

^by

^0.11

^mm.;

^{yellow, curved,shellumnarked.}

Pedicel short, slender,

and

on the convex curveatonesideof truncate base.

Larva.

—

(Stage 1.) Size 0.3

by

0,16

mm.;

subelliptical, pale, semi- transparent3"ellow.

Dorsum

convex and bearingfivepairs ofspines

—

a pair of verylongcurved onesonthe cephalicregion;

two

pairs

nmch

shorteron the thorax; a pairon

abdomen

cephalad ofthevasiformori-

«Thesemaybespaceswhich,intheliving insect,arefilledwithwax; when^freshly mountedspecimensareexamined the spaces are seenfilledwithair,

N0.13G2.

AUn'RODIDS OF CALIFORNIA— BEMm. 501

ticcandapairlatero-cephalad ofit.

The

usualcaudalandlatero-caudal hairsare present,

much

longer than in otherypecies.

There

isa dis- tinctthickened maro-inalrim,in whichare

two

parallel

rows

of minute trans})arent spots; the lateral

wax

tubes

seem

to be wanting andthere

is no

wax

secretion of

any

kind; on thelateral marginsofthe rimare seven pairs of delicate hairs set in conical >)ascs. These hairs are

much

longer than usual, and extend

from

the latero-cephalicmargin, aboutone-half the distance to thecaudalend. Vasiform oritice sub- circular,

bounded

l)y adark rim;

operculum

relativelythe

same

shape and size as oritice; lingula the length of oritice, enlarged distally, strap-shaped.

Legs and antemuB

functional. Moutlipartslarge, sette

more

than one-half the length of larva.

Larva.

—

^(Stage2.) Size,0.45

by

0.8

mm.

^; broadlyelliptical inshape andof ayellowish-brown colormottled withdark spots.

Dorsum

flat,

witha narrow lateral fringeof transparent rods,

which

arecontinuous at basebutraggeddistalh'; nodorsal exudation. Spinesasinstage1,

except that the cephalic pair are wanting

and

the second and third pairsare verylong. Lateral

wax

tubes distinct; crenulations ofmar- ginshallow and rounded; marginal rim, latero-marginal hairs, legs,

andanteunffi havedisappeared

from

view.

Larva.

—(Stage

3.) Size, 0,,5

by

0.45

mm.

to0.7by 0.83

mm.

; color, dark brown; b}- transmitted light, yellow or gray-brown.

No

mar- ginal rim, but the lateral

wax

tubes are bent

downward

to

some

extent, andthe crenulationsarerelativelydeeperthaninthepupa-case. Hairs and spinesas instage 2, except that there is a pair ofminute hairs on the cephalic region.

Abdominal

segments distinct along the dorsi- meson, bearing

two

rows of small pores on each side of the median

line, a pair to eachsegment; inother respects as in pupa-case.

Pupa-case.

—

^Size,

^from

^{0.75 by 0.5}

^mm.

^{to 1.03}

^by

^0.7

^mm.;

^shape,

broadl}^ su})elliptical, widest across the

abdomen,

narrow on thorax, and tapering to the caudal ejid; color, shining ))lack.

There

is a pro- fuse lateral exudation in the

form

of a fringe

made up

^of thread-like, white,

wax

rods

which

have

many

minute projections,thewholeinter- laced into amass whichvaries considerably in width.

Dorsum

keeled for entire length,

body

segments conspicuous; onthethird andfourth abdominal segments are a pair of small pores; the thoraco-a))dominal suture is very sinuate and extends to the marginal ridge. There is a distinct

and

wide marginal rim

somewhat

wider on the sides, which is

demarked from

the

dorsum

all around b}' asharp ridge; the lateral

wax

tubes are quite prominent and extend

mesad

about one-half the width of the rim; the

margin

is crenulated, incisions irregular, and the ends of the tubes truncate and notched.

On

the cephalic region there are a pair of wedge-siiaped or triangular transparentplaces, the acute angle toward the median line, the outer edge parsdlel with the marginalridge; betweenthetransparentplacesisa pair of smallpores,

Proc. N.

M.

vol.

xxvii—

⁰³ 35

502 niOCEEDINdS OF THE NATIONAL MUSEUM.

^vol.xxvii, and near to the

median

lineareseverallongitudinaldashes. Vasiform

orificesmall, tubercled,

and

subcircular;

operculum

lieavilychitinized, approximatel}' the

same

shape

and

size asthe orifice; lingulaobscured

bv

theoperculum.

On

the ventral side the reduced legs can ^lie

made

out; antennaj not visible.

Adult

female.

— Body

so distorted thataccurate

measurements

could not be made; fore-wing, 1.4

by

0.65

mm.;

hind tibia, 0.5

mm.;

mid- dle tibia, 0.35

mm.;

fore tibia, 0.3

mm.;

hind and middle tarsi, 0.25

mm.;

proximal segments, 0.15

mm.;

fore tarsus, 0.21

mm.

Color, bright yellow, legs

and

antennse white.

Wings

immaculate, thickly coatedwith white

wax

^{granules; costal} margins golden yellow;

main

vein of both wings extending to apex; in fore-wing the flexure is at the middle of length, bej^ond it the vein becomes gradually less evident: the basal veinlet arises at base of

wing and

extendsobliquely caudad to margin of wing.

Mentum

yellow, with proximal segment longest; this is slenderand tapers to the middle segment, which is

shorterthan theothers; distal

segment

gradually taperingtotheapex, which is dark

brown

at extreme tip. E3'esdivided into

two

lobes, of which the anterior lobeis smaller,

more

transparent,and glowingred;

the facets are also

much

smallerand of adifl^erentshape

from

thoseof the posterior one, which is subrectangular in shape

and

of a dark, reddish-browncolor. (See

drawing

of

A.

pruinosus.) Genitaliaordi- nary,

brown

in color andacute conical.

Adult

male.

—

Fore-wing, 1.23 b}" 0.6

mm.;

hind ^tibia, 0.6

mm.;

middle tibia, 0.33

mm.;

proximal tibia, 0.3

mm.;

tarsi, proximal and middle, 0.21

mm.,

hind 0.26

mm.,

theproximal

segment

of latter 0.15

mm.

Genitalia ordinar}-.

The body

very

much

smaller than thatof the female, in other respects essentially thesame.

Coti/pes.—^o. T089,

U.S.N.M.

Collected on Umbellularia californicaon campus, Leland Stanford Junior Universit}'; in various places in the Santa Clara Valley; on the lower slopes of the Santa

Cruz

Mountains, and along the San

Ramon Creek

at the base of

Mount

Diablo, Contra Costa County.

Also collected

on

Arhutus onenziesil on

King

Mountain, on the Ceanothus, near Usal,

Mendocino

County, July 6,1901,

and

on Zhnhel- lularla califarnica at

Redwood

Creek,

Napa

County,

June

6, 1901,

by Mr. George

Coleman.

The

pupa-cases are

conmion

all the 3"ear.

The

eggs

and young

larva were collected

from

the middle of

March

to

May,

and again found in

October

and November.

April 28, 1902, the adults

emerged from

segregated cases. This species is

common

in the above localities.

Often the leavesare incrusted with the pupa-cases, which arealways on the under sides of the leaves. Frequently

A.

inconspicuus., A.

nigrann^

A.

quaintancei^ and A. pruinosus arecollected

from

the

same

leaveswith A. errans.

ALEYllODIDS OF

CALI

roLWIA —

lU'JMIS.

503