A new genus of Scolytids from Florida

34 ENTOMOLOGICAL SOCIETY

A NEW GENUS OF SCOLYTIDS FROM FLORIDA.

By ^A. D. HOPKINS.

Erineophilus

gen. nov.

Fig. ^2.

Head medium

_{in size;} not_rostrate,front narrow and fringedⁱⁿ the

9

^>

broader,convex and_nearly

smooth

inthe_r?; anteriormargin (epistoma) (Fig^2,g)strongly produced over ^{base of} mandibles; eyes oblong, nar row, closelyjoined^toantennal scrobeand extending

more

than halftheir length above^it. Maxilla_{(Fig. 2, b} short,}broad;^cardo

more

than one- halfaslong^asremainingportion and lessthan one-halfasbroadatbase;

stipesshortcontinuous withsub-galea butwith distinctsuturebetween it

andthe _palpiger, which ^is large, stout, and as long^{as the} three-jointed palpi, ^itsouter angle bearing

numerous

_longhairs,the_tipsofwhich extend beyond ^thetipof the palpus^; galeanarrow,^as longas palpi,and

armed on

the inneredgewith closely^setcompressed^teethwith rounded_tips;palpi stout, distinctly three-jointed, the _joints nearly equal ⁱⁿ length; joint ⁱ nearly twice^asbroadas_2,which isalsonearly twice^asbroadas

3,which

istruncateat_tip; i and 2with a fewhairs on the outer portiontoward the anterior margins.

Mentum

_{(dorsal view) (Fig.}2, r,d') short, rather broad, anterior portionbroaderthan base; ligula short,conate, notextend ing^totip, sparsely clothedwith short _hairs; palpi^difficult to define,ap pear^tobe two-jointed

and

differ in the sexesas indicatedin the_figures.

That

of the

$

^{(c)appears tohave the second} joint globular and the _tip concave,andtheinneredge

armed

witha small chitinous_piece,while in the

9

(<0^iti narrower towardthe_tip,obliquely excavatedandthe surface chitinous. Antennae_(Fig.2,a):funiculus six-jointed (appears^tobefive- jointed ⁱⁿ

some

examples), joint ⁱ large,globular, nearly^as long ^{as the} others united, 2-5 aboutequal length, 5-6 compressed, closelyjoined, ^ir regularanddifficulttodetermine, exceptⁱⁿbalsam under highmagnifica tion_; club oblong, compressed,broadlyrounded from middle to_tip, nar rowing toward ^base,divided on its outer face by two sutures, the first nearly straight, the second _strongly curved, inner surface shining not annulated. Inbalsamthefirstsutureshowsa pi-ominent chitinouspiece, as in figure; the remaining surface,especially near the _suture,

marked

with

numerous

_punctures, and clothedwith long ^hairs which rise from minute _granules. Scapesimple,clavate,scarcely^asbroadasthefirstjoint offuniculus.

Front

tarsi (Fig.2,/') slender, shorterthan tibiae,joint increasingⁱⁿ lengthfrom_base, i shortand constricted in middle, ² broader at _tip, 3simple, oval-cylindrical,4 shortand narrowbutdistinct, 5 rather stout at_tip andaslong^as2and_{3 together.}

Front

ttbice (Fig. 2, e) stout, broad at base, slightly broader at _tip, upper^{or outer}edge

armed

with three or four _stout, broad, triangular teeth,connectedwith transverse elevationsontheouterface,andincreas-

WASHINGTON. 35

FIG. 2. Erineophilus schwarzi^nov. gen., ^et sp. ^i. Adult, dorsalview, x_22.7. 2. Adult

9

^lateralview. X22.j. ^a. Antenna(asseeninbalsam), x_133.4. b.Maxilla, x_133.4. c.Mentum

$

(palpiimperfectly denned).

x133.4. d. Mentum x_133.4. . Tibia,showing upper^{surface, x}

I33-4- f- Tarsus, x133.4. g, Epistoma. x _133.4. /z. Prosternum and coxae. x66.7. ^z". Section ofelytra, x_{66.7. /.} Section of pronotum. x 66.7. k.Tip^ofelytraand abdomen, showing pygidium and edge^oflast ventral segment, x_50. /. Maleorgan, x_133.4.

ing^{in size} toward the outer angle, which is strongly produced ^{into a} broad outward and

upward

^curved

mucron;

inneredgenearly straight, pubescent, angle withcylindrical

upward

^{curved tooth.} Middle and hind

tibiaenarrowat base, dilatedtowards _tip,and evenly serrated on outer edge; outer angle not produced^butbroadly rounded^to inner angle.

Front coxce (k} widely separated,large, almost contiguous with an teriormargin^ofprosterum. Middle and hindcoxae small.

Prothorax: sternum _(//)broad, sub-quadrate^; episterum with poster iorportion(2)excavatedfor reception of femur;

notum

_slightly shorter than broad, sides parallel and margined ^{to middle, anterior} portion

36 ENTOMOLOGICAL SOCIETY

broadly rounded,declivous, concealing the head from_above, roughened with transverse rugosities(j)posterior surface smooth, shining,

punc

tured, basal angle^acute.

Mesothorax: episternum (2) large, opaque;

epimerum

very small, narrow, obscure.

Metathorax: episterum narrow, elevated,base strongly oblique, ven

tral angle acute; sternum _large,with short

median

_groove toward the posterior margin, ⁱⁿ 9-

Abdomen

: ventral segments ⁱ and2equal width,both _togetheras long asthe others united,3, 4,and _{5 equal} length, sutures nearly straight, posteriormargin^of5concave, not strongly^{reflexed as is} usual; pygid- ium, (),prominent and extending beyond tip of _elytra in both _sexes, but

much more

_pubescentⁱⁿthe_<$',stronglypunctured^inthe

9

^;propygi-

dium

smooth,^chitinousand the posteriormargin

more

_shininginthe

$,

not chitinous ⁱⁿthe Q.

Elytra^{: sides} parallel or _faintly rounded for

more

than half their length, slightlywiderin middlethan prothorax, not elevated orroughened at base,but_faintly margined; surface nearly smooth,shining,^striae and interspacespunctured ⁱⁿ rows, declivity plain.

Type

of genus,

Erineophilus schwarzi

^described

^from

¹⁸speci

mens (n ?? and

₇ cTc?),

submitted by Mr. ^E. A. Schwarz.

Two _specimens

^of

each

sex

were

_dissected, the

remaining 9 9 9 and

_{5 cfcT} are in the type ^series,

two

retained

by

^{the author,}

and

the _others, including the ^c?

and

? types, are ⁱⁿ the

National

Museum

Collection

(No.

6242).

The

_species

_{upon which}

this

genus

^is

founded may ^be

^further

described, ^asfollows:

Erineophilus ^schivarzi

sp. nov.

Female

_type

(Gocoanut ^Grove,

^Fla.,

April

26).

Length, 1.7

mm.*;

color,yellowish-red^; posteriorportion ofprothorax to

abdomen,

darker; head and ventral surface dark; legs and antennae yellow.

Head

with front convex, middle of convex surface polished, shining, densely fringed with long yellowhairs,which extend aroundthe anteriormargin almost concealing the epistoma and ^mandibles. .Head withdrawn so thatposterior portion cannotbeseen. Base of prothorax emarginate. Posterior portion ofproepisternumshining. Elytra shining, margined ^{at base,} surface glabrous, except on sides which are faintly and _sparselypubescent; striae punctured but not impressed, interspaces not elevated and with

median row

of punctures slightly smaller than those of the striae; declivity not _steep, smooth, _punctures fine, apical margin slightly retuse, exposing^thepygidium^;ventral segments ⁱ and2 distinctlypunctured.

Male

_type

(Cocoanut Grove,

Fla.,

September

25).

*See_p.37, note.

equals description of

9

'

in all respects except the head, whichhas the front convex, smooth,sub-opaque, faintly punctured and withfaintmedian _line;epistoma ^{clothed with} long hairs, extending over base of mandibles.

\

The

characters heredefined

vary but

slightlyintheother

exam

ples before

me. The ^^

are generally smaller

and _vary more

in size.

When _exposed

the posterior portion of the

head

is

found

to

be sub-opaque and _punctured

tovertex.

The

_elytral ^striae

and

interspaces are _slightly

more

distinct in

some _examples than

in others.

Systematic Position of

^the

Genus.

This genus seems

^to represent a^distinct

group coming between

Blandford's

groups

Scolytides

and

Hex^colides.

These

three

groups may ^be

distinguished ^asfollows:

\\J

A. "Anteriortibiaeproduced ^{at the} upperapicalangle beyond ^thetar-

sal insertion intoamucro, ^{or bifid}process^" (Blandford); upper border unarmed. Third_jointoftarsibilobed.

SCOLYTIDES.

(Scolyti.) (Comptoceri.) (Bothrosterni).

B. Anteriortibiae stronglyproduced ^atthe upper apical angle^into an

upward

curved process; upper border armed. Third _{joint of} tarsi not bilobed.

ERINEOPHILIDES.

(Erineophili.) C. "Anteriortibiae notproduced

beyond

^thetarsal insertion" (Bland.)

HEXACOLIDES.

HYLESINIDES.

TOMICIDES.

*Detailedmeasurements and^ratios.

1. 9

9

9 average^1.66

mm. Maximum

_1.75.

Minimum

_1.50.

2. 5

$$

^{average 1.53}

^{mm. Maximum}

^1.65.

^Minimum

^1.30.

i.

999- ^Mean

^ratioof length ofprothorax^towidth,

94%.

Mean

ratioof length of prothorax ^to length of_elytra,

59%.

Mean

ratioofwidth of_{elyUra to} length ofelytra,

69%: mean

74 (ex pressesspecificvalue ofcompositecharacter.)

2- 5d*cT-

Mean

ratioof length ofprothorax^towidth,

95%.

Mean

ratioof length ofprothorax^tolength ofelytra, 58%.

Mean

ratio of width of _{elytra to} its length,

69%; mean

74 (expresses specificvalueof compositecharacter.)

38 ENTOMOLOGICAL SOCIETY

The

declivous asperated

pronotum concealing

^the

head from above

indicates affinites

with Tomicides, but

^the

mouth

_parts,

tibiae,tarsi,

widely

separated anteriorcoxae,

and _exposed pygidium

furnish characters

which

_separate it

from

this

and

all other

groups

^{as at} present recognized.

I

am under

obligations ^to

Mr. E. A. Schwarz

for the privilege of describing ^this interesting

genus and

_species.

He

also

sug

gested the generic

name.

In discussing the

paper Mr. Schwarz

said that this species

was

of

economic importance,

^asit

bored under

the

bark

of

branches

of the

Banyan

^trees (JFfctts),thus_killing

them.

The

first

paper

^read

was

thatof Dr.

Dyar,

^entitled:

A NEW ^FORM OF CLISIOCAMPA FROM COLORADO.

By ^{HARRISON G. DYAR.}

Clisiocampafragilis,

^the

common

_{species of}^this

_genus

ⁱⁿ

Col

orado, feeds

upon

a variety of plants, including

wild

cherry, rose

and

aspen, occasionally,

but

not

normally, on

theoak.

A

larva

was met with

_sparinglyin the Platte

Canyon near Denver, Col

orado, feeding exclusively

on

the

oak and

_differing ⁱⁿ habits

and

coloration

from

the

common form. Later

it

was

seen in

abun dance

at Sedalia,

Colorado. The

_species is nearly ^{allied to} the Californian C. constricta Stretch.

The _eggs were found on

the

lower twigs

^{of the}

dwarf oaks

in small rings

without any covering;

^these

were _eggs

of the

pre

vious season.

The

larvae fed atfirstincolonies,

spinning no

^tent, onlyjust

enough web

to

hold them

to the

branches

as

with

C.

disstriaof the Atlantic States.

Later

_they

wandered

_separately

in search of the

young

^leaves

which were

allthey

would

eat.

The

larva

has

a black head, blue

powdered

^{inthesutures.}

The _body

is as usual,short haired, the ^{lateral tuftsasin}constricta but

more

reddish, ^less contrasting.

Orange markings

^well

developed,

consisting of a dorsal

band

constricted atthe anterior thirdof the

segment, marked with black and

obscurely blue centered^; a sub- dorsal

and

^a lateral _line,practicallycontinuous,

running

^into pale

orange

transverse mottling ⁱⁿ the incisures; tracesof

substigma-

talorange.

Blue markings ^reduced

^;

two

lateralpatches, the

pos

terior

one

a transverse line cut

by

^thesubdorsal

band

; subventral region

washed

inpale^blue.

The black ground

color on.thesides, especially ofjoints 3,

4 and

12,

appears

^as

conspicuous

^transverse

lines.

Hairs

reddish, scarcely ^tufted dorsally,

orange

^or

white

on

the sides.