TWO MIGROLEPIDOPTERA INJURIOUS TO CHESTNUT.

102

PROCEEDINGS ENTOMOLOGICAL SOCIETY

The

third

and

last paper

was by Mr. August Busck which

follows.

TWO MIGROLEPIDOPTERA INJURIOUS TO CHESTNUT.

BY AUGUST

BUSCK.

Bureau_ofEntomology.

Sesia castaneae,

new

species.

Labial palpiyellow onthe underside;aboveblack,sprinkledwith yellow scales; apical half ^of third joint ^all black. Antennaeblackwith the_tips bronzy ^fuscous. Facebluish black with the face before the eyesbroadly white.

Head

black. Thoraxmetallic bluishblackwithtwo narrowlateral stripes yellow; ⁱⁿ the female also with _posterior edge narrowly yellow.

Forewings^{alike in}thetwo_sexes,transparent,withbluishblack_scalingon the_{veins, slightly} mixed with golden yellow scales; ^cilia purplish black.

Hindwingstransparent withnarrowblackveinsandwith yellowcostal edge, whichshows throughthe

membrane

oftheforewing

when

innatural posi- tion;^ciliapurplish black.

Abdomen

deepbluishblackwithposterior half offourth_jointyellow onthe underside;ⁱⁿthefemaletheextreme edges ^of thirdandfourth_jointsarealsonarrowly yellow on^{the dorsal}side;thebase ofthe

abdomen

laterallyyellow; the inner side^ofthe male_claspers dark ochreous. Legs^bluishblackwithnarrowyellow annulations^attheendof the_joints;thetarsiofthefemalesdustedwith_yellow.

Habitat:

Lynchburg,

Virginia,

and Snow

_Shoe, Pennsylvania, F. C. Craighead, ^coll.

Foodplant: Chestnut.

Type: U. ^S. Nat.

Mus. No.

15505.

Bred from

the trunksofchestnut

by Mr.

^F. C. Craighead.

The

fullgrown ^{larva is}

about

half

an

inch _{long, yellowish} white with light

brown head and

with yellowish thoracic shield

and

thoracic legs; setae short

and

_pale;

hooks on abdominal

feet in

two rows

with

from

tento twelve

hooks

inthe _posterior

and from

twelve to sixteen inthe anterior row.

The

adults

emerged

^{April 12,}

and May

21, 1912.

The

_speciesisnearest in size

and

coloration toS. pictipes,

Grote and

_Robinson,

and

has

been mistaken

for this species,

which

ac- cording ^to the earliest records ^is injurious to

plum,

cherry

and

peach;

Grote

himselfidentified (Bull. U. S. Geol. Surv., vi, p. 287, 1881) the _species bred

by

Bailey

and

Kellicott,

from plum ^and

cherry (Can. Ent.,

xm,

p. 7, 1881) as his S. pictipes.

Beutenmuller

recordsit also

from

chestnut, butthis record

was undoubtedly

^caused

by

^a misidentification of the present species.

The

chestnut _species

may

^be distinguished

from

S._pictipes

by

^the

OF WASHINGTON, VOLUME

_XV, 1913 103 larger white, not _{yellow, cheeks,}

by

^theblack, not _yellow, collar

and by

the absenceofyellow

on

thesecond_jointofthe

abdomen.

Ectoedemia

castaneae, new_species.

Palpiandlowerface ochreous. Upper^face andheadblack. Antennae blackishbrownwithnarrowyellow annulations andwith_largemilk-white eyecapscontrasting stronglywiththedarktuftedhead. Thoraxblackish brown_sprinkledwith ochreous _scales, especially posteriorly; posterior tip ochreous. Forewings^blackishbrown_{liberallysprinkled}withbluish white scales. Cilia fuscous. Hindwing ^darkfuscous, blackish along the costa with _lighter ochreousfuscous cilia; in themales with astrong yellowish costal hair tuft.

Abdomen

dark fuscous with ochreous anal tuft and ochreousunderside. Legslightsilvery ochreous. Alar expanse:^7.5-8

mm.

Habitat: Vietch, Virginia.

Type: U. ^S. Nat.

Mus. No.

16333.

The

^life history of ^this species has _recently

been

ascertained

by

^{Dr. A.}

D. Hopkins and Mr.

T. E. Snyder,

who have

bred

it

from

small _galls

on young

twigs ^of chestnut,

reminding

^onein

form and

size ofthe egg

masses

oftheforest tent-caterpillar.

The

larva resembles that of Nepticula; the

head

is small, nor- mal, ^{retractive into} the first thoracic

segment which

^{lacks all} trace _{of feet;} the other thoracic feet

and

all the

abdominal

feet are represented

by rudimentary

processes; such are

found on

joints3

and

4, 6, 7, 8, 9, 10,

and on

_{joint 13}while

they

are faintly indicated

on

_{joint 5;} thus _joints 11

and

12arethe only ones^beside 2

which have no

trace of feet. In Nepticula ^the formula is

"

.

.2.6.

^{. ".}

The

species ^{is close} to E. obrutella Zeller,

which

_species

must

be included in the present genus, but ^differsin the darker thorax

and

_forewings. Obrutella

was

described in the

genus

Trifurcula¹ but

shows some

_important difference in pterogostic characters

from

_{the type} of this genus, ^T. pallidella, of

Europe

(fig. Ib).

The

life history ^of Trifurcula ^is not

known.

The

leaf

mining

genus Nepticula² (fig. Ic), typically

shows

a reduction of the venation

by

^{the absence of vein 8}

and

of the cubital veins; in

some

of the _larger blotch-making species of the genus however, these veins are present ^{or at least indicated}

and

thevenation is practicallythat of the gall-making Ectoedemia.

1Verh. Zoo-bot. Gesell. Wicn. XXIII, p. 316, 1873.

21 use the geonym Nepticula advised!}^ instead ^ofStigmella Schrank, as adopted by Lord Walsingharn and Mr. Durrant.

The

earlier name, Stigmella, ^is a nomen nudum, ^whetherby ^{accident, as held} by Lord ^\Val- singham ^ornot, and is for that reason in

my

opinion not ^{available as} a substitute for Nepticula ^Zeller.

104

PROCEEDINGS ENTOMOLOGICAL SOCIETY

These

three genera, Ectoedemia _{(fig. a), Trifurcula (fig. Ib),} Nepticula (fig. Ic),together with ScoUaula

Meyr.

(fig. Id),

form

a well separated

group among

^the Tinece aculeate. All the _species are

among

^{the smallest of} the Lepidoptera, averaging

from

4 to 9

mm.

in alar expanse. ^All

have

a

many

spined

frenulum

in bothsexes.

Fig. ^{1. a,} Ectoedemia _populella Busck; b, Trifurcula pallidella Zeller;

c, Nepticulamicrotheriella Stainton; d, Scoliaula quadrimacidella'Boh.

Under

notes

and

exhibition of specimens

Mr. Schwarz

read

by

title the following note

by Mr.

^{Chas. R.} Ely, ^of Frederick,

Md.

:

THE FOOD PLANT OF GLEONUS CALANDROIDES RAND.

BY

CHAS. R. ELY, Frederick, Md.

About

the 10th of August, 1912,

my

daughter while playing

on

thesea beach, near EastRiver,

found

thelarvse of aweevil _living in the roots of Cakile endetula_Bigel.

Because

of herinterest in theinsect

we

_collected,

_{on August}

14,a_large

number

ofthe various stages,

from

larva to adult.

Specimens which

^later

emerged from

the pupae

were

identified

by Mr.

^{E. A.}

^Schwarz

^{as Cleonus calan-}

draides

Rand.