EMBIOPTERA OF THE NEW WORLD ROSS 467

468

PROCEE/DINGS

OF THE NATIONAL MUSEUM

^vol.94

Body and

legswith allhairs noticeablylong.

Wings

asthroughout the genus but with marginal fringe exceptionally long, especially

toward

base.

Terminalia (figs. 112-114) with basal

apodeme

of tenth tergite (10) acute, extended on right sidebeneath almost entire ninthtergite (9) ^{; left} tergal process (10

LP)

(fig. 114) broadly attached basally, verygradually

narrowed

distad,

somewhat

parallel-sided, inner apical angle abrubtly expanded, acutely rounded, deeply, divergently fur-

rowed

dorsal]y, apex of process complex

and

thick (dorsoventrally)

;

right tergal process (10

RPi)

with a prominent, vertical,

naked

nodule atinner basal angle,suface of 10

KP2

sparsely echinulate, en- tire process

somewhat

swollen

and

(before preparation) strongly curvedventrad,apexsclerotic,golden,curled

downward

attip,pointed.

Hypandrium (H) weakly

sclerotized, its process

(HP)

^especially

so, nearly

membranous

across base, subobsolete; left apical angle stronger, with a fingerlike projection pointed toward

LCB. LPPT

fused to

H

^{basally, elongate,} greatly twisted distad. Left cercus- basipodite

(LCB)

sclerotic, with a single wrinkled, fingerlike, inner projection pointed dorsad,^thisterminating in a pair of claws; ventral

margin

with an acute, sclerotic lobe (probably

homologous

to that of

DUohoc.

rc(i) covered with minute ecbinulatioiis. Basal segment of left cercus (LCi)

submembranous

except along inner margin, apex swollen; basal segment of right cercus cylindrical, well sclerotized, basal

foramen

slightly irregular

and more

heavily sclerotized: termi- nal segments of both cerci normal, similar. Botli cerci are longer thanthose of

most

species.

Female.

— ^Unknown.

Holotype.

—

^Male,

^on

^{slide, deposited in the}

^Museum

^{of Com{)nr;i-}

tiveZoology,

from

Valle Nueva, near Constanza,

Dominican

Republic, 7,000feet,

August

1938 (P. J.Darlington)

(MCZ).

Remarks.

—

^{This species,}

^which

^can be separated at once

from

-AX

known

^species

by

the peculiarshapeofthe lefttergal ])rocess (10

LP),

is

named

for the collector.

OLIGEMBIA (OLIGEMBIA) BICOLOR, ncv species

FlQUEES 108-110

Male.

—

^{Color (in alcohol):}

^Head

^black; pterothorax, foretibiae,

mid and

hind femora,

and abdomen mahogany brown

_; prothorax

and

remainder of forelegs yellowish orange; basal half of antennae, mid- tibiae

and

hindtibiae,tarsi,

and

terminal segments ofcerci straw yel- low.

Length

5.1

mm.;

forewing length 3.0

mm.,

breadth 0.9

mm.

Head

^(fig. 108) circular,almostas broadaslong; eyessmall, separ-

EMBIO'PTERA OF

THE NEW

WO'RL.D ROSS

469

ated

by

aninterspace

two and

one-half eye widths wide; sides slightly arcuate

and

gradually convergent, posterior

margin

evenly rounded;

submentum

verylarge,dark,sidesarcuate,abruptlysomesad, anterior

margin

broader than posterior, shallowly incurved. Mandibles with the basal tooth, of the three apical dentations, of the right mandible, larger; left mandible Avith the

two

apical teeth close together; both mandibles with medial angles rounded, strongly constricted behind middle.

Wings

without specific peculiarities; fringe as in darlingfoni.

Terminalia (figs.109,110) withtenthtergite (10) veryshort, trans- verse; basal projectionshort, broadly rounded, extending just

beyond

middle of 9, reduced on right side

and

notched to right of middle.

Left process (10

LP)

constricted basad,

expanded

distad, outer side arcuate; apical

margin

shallowly, broadly emarginated; dorsal sur- face with a fine, diagonal carina extending

from

outer apical angle

toward

base of innermargin. Rightprocess (10

RPi)

reduced, inner

margin membranous,

apex curved

caudad and

with a minute bulbous

tip. Secondary process (lORPo) dark, sclerotic.

Hypandrium (H) pigmented

throughout; its process

(HP)

small, strongly

narrowed

caudad, semidetached basally. Left paraproct

(LPPT)

fused on inner basal side to

HP,

very narrow, elongate, tip almost attaining that of 10 RPi. Left cercus-basipodite

(LCB)

a dark sclerotic ring fused toLCi, with

two

projections in outline of ventral

margin

; pro- duced

mesocaudad

as a conical lobe. Basal segment of left cercus (LCi) robust, immediatelyswollenbehind

LCB

on innerside. Basal segment of right cercus cylindrical, not apically swollen,

margin

of

foramen

irregular.

Terminal

segments ofboth cerci similar, tapered

distally, almost unpigmented.

Female.

— ^Unknown.

Holotype.—M^Ae.

on slide,U.S.N.M. No. 56584.

Type

data.

— ^Nova

^Teutonia. Santa Catharina, Brazil (F. Piau-

mann).

Paratypes.

—

^Several males with above data deposited in the Cali- fornia

Academy

of Sciences, the

Museum

of

Comparative

Zoology^

and

the writer's collection.

OLIGEMBIA (OLIGEMBIA) UNICOLOR, newspecies

FiGUEES 115-117

Male

(in alcohol).

— Mahogany brown

throughout,

abdomen

some-

what

lighter,

head

darker; antennae with

two

basal segments brown, sixsucceeding segmentslightyellow, remainder

medium brown

; cerci with terminal segments pale.

Length

5.0

mm.;

forewing length 3.2

mm.,

breadth 0.9

mm.

470

PROCEEiDHNGS OF

THE

NATIONIAL

MUSEUM

^vor-.91

Head

(fig. 115) elongate, narrow; eyes rather small, slightly in- flated, facets large

and

outlined

by

pigmented interspaces; eye inter- space equal to

two and

^one-half eye widths; sides behind eyes

two

eye lengths long, nearly straight, scarcely convergent caudad; pos- terior

margin

broadly rounded; frontal region transA'ersely rugose:

occipital

foramen

small, narrowly rounded anteriorly.

Submentum

small, quadrate; sides slightly arcuate, gradually divergent

from

base; anterior anglesrounded; anterior

margin

feebly arcuate.

Man-

dibles with very broad bases, strongly

narrowed

distad; apical teeth short, broad, well defined; medial angles very sharp, prominent

;

inner margins of base greatly developed mesad, rounded.

Wings

without notable features except hyaline stripes in hind-

wing

areverybroad

and

diffused,

much more

sothan in forewing.

Terminalia (figs. 116, IIY) with tenth tergite (10) transverse;

basal projection broadly rounded, extending ^only

halfway

beneath ninthtergit-e; lefttergalprocess (10

LP)

very broadbasally,gradually

narrowed

but still broad, distad, inner "talon"' very feeble

and

short, outerportionangulateonapical

margin

^;

major

right process (10

RPi)

with inner basal angle developed as a

smooth

broad dome, extreme apex evenl}^ curved outward.

Hypandrium (H)

quadrate, each corner producedas anarrow, truncate projection; process

(HP)

sepa- rated from

H

by a narrow, transverse slit, broad basad, gradually

narrowed and

losing

pigment

distad. Left paraproct

(LPPT)

fused to

H

^atbase,very

^narrow

^{; apexattainingthat of 10KPi,}very strongly acuminated. Left cercus-basipodite

(LCB)

^{a heavily} sclerotized ring; inner projectionsclerotic,with a dorsal pair of short serrations.

Basal segment of left cercus (LCi) ^slightly

expanded

distad, en- tirely unpigmented. Basal segment of right cercus cylindrical, slightly broadened basad,

foramen

with angular dorsal

and

ventral projections on margin; outer apical angle

membranous.

Terminal segments of both cerci entirely unpigmented.

Fernale.

— ^Unknown.

Holotype.—M.Vi\Q, on slide, U.S.N.M. No. 56583.

Type

data.

— ^Nova

^{Teutonia, Santa Catharina, Brazil} (F. Plau-

mann).

Paratypes.

—

^Several males with above data deposited in the Cali- fornia

Academy

of Sciences, the

Museum

of

Comparative

Zoology,

and

the writer's collection.

OLIGEMBIA (OLIGEMBIA) MELANUUA,newspecies

Figures 118-120

Mole.

—

^{Color (in alcohol): Sclerites very dark chocolate}

^brown;

intersclerotal

membranes

reddish brown.

Head

with clypeal region.