A NEW GLYPTOTERMES FROM PORTO RICO.

PROC. ENT. SOC. WASH., VOL.

_25,

NO.

4,

APR.,

1923

89

c

—

^{Cephalichorns.}

d

—

Anteriorspiracle ot larva and pupa.

e

—

Antero-dorsalspiraclesofpupa. Lateral view.

f

—

Posteriorspiracle. Righthalfdrawn.

Fig. 3

—

ChrysotoxumpubescensLoew.

Pupa,lateralview.

k

—

Posterior end. Dorsalview.

1

—

Posteriorspiracle. Righthalfdrawn.

Fig.

A—Brachypalpus

rileyi VVilliston.

Pupa

dorsal view.

g

—

^{Anteriorspiracleof larva}

and

^pupa.

h

—

^{Cephalichorns.}

i

—

Antero-dorsalspiraclesofpupa. Lateral view.

j

—

^{Posteriorspiracle. Right}halfdrawn.

Plate7.

Fig. ¹

—

Xylotabicolor

Loew.

Pupa,dorsalview, a

—

Cephalichorns.

b

—

^{Anteriorspiracle}of larva

and

pupa,

c

—

Antero-dorsalspiracleofpupa. Lateral view.

d

—

Posteriorspiracle. Righthalfdrawn.

Fig. 2

—

CriorhinapictipesBigot.

Pupa, dorsalview,

e

—

^{Anteriorspiracles}of larva and pupa,

f

—

Antero-dorsalspiraclesofpupa. Lateral view, g

—

^{Posteriorspiracles.}

Fig. 3

—

Myioleptanigra

Loew.

Pupa,dorsalview, k

—

^{Posteriorspiracles.}

Fig. 4

—

Blera {Criorhina)ufnbratilis VVilliston.

Pupa, dorsalview.

h

—

Anterior-spiraclesof larvaand pupa,

i

—

Antero-dorsalspiraclesofpupa,

j

—

Posteriorspiracles. Left halfdrawn.

A NEW GLYPTOTERMES FROM PORTO RICO.

Bv

Thos. E.

Snyder,

U. S. Bureau ofEntomology.

Only eight species of the genus Glyptotermes are known from

America, although

its

contained species are widely distributed

throughout the world. Two species are known from the

Antilles,

namely, G. pubescens Snyder and

this

new species G. corniceps

Snyder — both from Porto Rico.

92 PROC. ENT. SOC. WASH., VOL.

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In habits they are similar

to

species of Cryptoterynes Banks,

living in

dry, hard,

solid

wood. These termites might

easily

be imported through commerce

(in

furniture,

etc.)

and might prove very destructive. They probably could survive

in

the Southern

States.

Their presence

in

wood may be detected by small round holes and small impressed

pellets

of excreta which drop from the wood.

Glyptotermes

corniceps,

new

species.

Deixlatedadult.

— Head

yellow-brown(lightcastaneous-brown)lightertowards posteriormargin,where rounded,slightlylongerthan broad,onanterior slope, V-shaped, whitemarkingsoriginatingfroma fairlylarge, oblongfrontalgland depression,which hasitsbaseonalinewiththe center of theocelli;withscat- tered,longhairs.

Labrum

yellow-brown, broader than long, broadly rounded at apex, with longhairs.

Eyes black,not round, large, close to lateral margin ofhead. Ocelli large, oblong,placed obliquelybutclose to

compound

eyes.

Antennae

lightyellow-brown,9segments (broken),pubescent;thirdsegment slightly darker colored, subclavate, longer than second or fourth segments;

fourthto seventhsmall,ring-like towedge-shaped; from seventhon, segments longer

and

broader.

Palpilightyellow-brown,terminalsegments^conical,middlesegmentsbroad, pubescent.

Pronotum

lightyellow-brown,darkeron margins, margins emarginate

—

^only

slightly anteriorly, not twice as broad as long, sides nearly parallel, rounded nearposterior,withlonghairs.

Legs with femora white andswollen, tibiae andtarsi yellow-brown, slender, pubescent.

Abdomen

light yellow-brown,densely pubescent

—

^hairsfairly long.

Measurements:

Length

of entiredealated adult: 4.70-5.00

mm.

Length

ofhead (to tiplabrum):

L30 mm.

Lengthofpronotum: 0.80

mm.

Length

ofwingscale: 0.90

mm.

Lengthofhindtibia: 0.95-LOO

mm.

Diameterofeye (longdiam.): 0.31

mm.

Width

ofhead: 1.10

mm.

Width

of

pronotum:

1.10

mm.

Soldier.

—

(Plate8, figs.1-3).

Head

lightyellow-brown,darker(lightcastane- ous-brown)anteriorly,slightlyconcavein profile

and

withsides slightlyconvex, roundedposteriorly;depressionatanterior slope (epicranialsuture)whichisout- lined

by

aslightlyraisedrim;oneshort,slender,castaneous-brown

knob

orfor- ward-pointing lateral process between antennal socket and maxillary palpus;

faintoblong eye spotparallel to rim ofantennal socket; head with scattered,

fairlylonghairs.

w

Labrum

lightyellow-brown, broader thanlong;broadlyroundedatapexwhere there are longhairs.

PROC. ENT. SOC. WASH., VOL.

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APR.^

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93

Gula

fairlybroad,widthatmiddle

more

than halfthewidthat front.

Mandibles reddish-brown to piceous

—

^lighter colored near base; elongate, fairlystraight,incurvedat tips, slightly curved upwards; marginalteethpromi- nentneartip otleftmandible.

Antennae

lightyellow-brown, 11-12 segments, pubescent;thirdsegment sub- clavate,slightly longerthan secondor fourth; from fifthsegment on segments longerandbroader;lastsegmentshortandsuboval.

Maxillarypalpiwiththe terminalsegmentslender,elongate (longerand

more

slenderthan thetwoadjacent segments),with apexobliquely truncate, pubes- cent.

Pronotum

white withtingeotyellow,darkercoloredatanteriormargin,where deeply but roundly emarginate,

somewhat

semicircular, posteriorlyemarginate.

Legs with femora white

and

slightly swollen, tibiaeand tarsi yellowish

and

slender,pubescent.

Abdomen

dirtywhitewith tinge of yellow,withdense, fairlylonghairs.

Measurements:

Length

of entiresoldier: 3.7-3.8

mm.

Length

ofhead with mandibles: 2.20-2.45

mm.

Length

ofhead without mandibles(to anterior): 1.45-1.50

mm.

Length

ofleftmandible: 1.00

mm.

Length

ofpronotum: 0.50-0.65

mm.

Length

ofhind tibia: 0.70-0.75

mm.

Width

ofhead: 1.05-1.15

mm.

Width

ofpronotum: 0.9-1.05

mm.

The

specific

name

is

based on the processes on the front of the head of the

soldier.

Type

locality.

— Boqueron-Sahnas, Porto Rico.

Described from two dealated

^(cf

and

?)

adults and two

sol- diers,

collected together with workers at the type

locality

on February

21,

1923, by G. N. Wolcott, Ace. No. 81-23.

Type, male dedialed

adult.

— Cat. No. 26199, U. S. N. M.

Biological Note.

The manner of working

in

dry hard wood

is

similar

to

that of Glyptotei'mes pubescens Snyder of Porto Rico. Similar impressed

pellets

are expelled from tunnels

in

the infested wood —in this

case a dead

tree

branch. The

locality

where collected

is

one of the dryest sections of the island and about one mile away

salt

was being made by open-air evaporation of the sea-water.

Explanation ofPlate.

Plate8. Glyptotermes cornicepsSnyder. Soldier.

Fig. 1.

View

ofmandibles,dorsal.

Fig.2. Three-quarters viewofhead

and

pronotum.

Fig.3. Dorsalview ofhead

and pronotum

(outline),note anterior knobs.

PLATE8 PROC.EN-^. SOC.WASH.,VOL.

25

SNYDER— GLYPTOTERMES CORNICEPS.