Descriptions of six new wasps (Hym.)

54 PROC. 3NT.

SOC.

WASH., VOL.

22,

NO.

_3,

MAR., 1920

rufous,rather broadlyedged withpiceous. Tipspale.

Under

partspiceous, legs piceous, with _exception of the coxae, knees

and

tarsi which are _pale.

Length6.5-12

mm.

Male

has the rami of the antennal club _slightly prolonged and has the terminal ventral segment with ^a median raised portion, strongly depressed

on

eitherside.

Female

hasthe surfaceoftheterminal ventral even,not_depressedlaterally.

Mexico: Venodio,

Sinaloa, late

June, July and August; Tehuan-

tepec,

Oaxaca, July

7;

Mazatlan,

Sinaloa,

September

^15.

Type from Venodio.

Described from twenty-three specimens.

Type. No. _{22557, U.}

S.

N. M.

Corinthiscus _spinolae,

new

species.

Form

similar to C. sinaloaebutlarger. Head, pronotum, meso-

and

meta- sterna _{piceous, elytra} pale with dark _spots,

abdomen

_{pale, legs pale} with kneespiceous.

Head much

as inthe preceding speciesbutthepunctures^are slightly ^finer. Scape

and

funicle of antenna reddish chestnut, club darker.

Palpi rufo-testaceous.

Thorax

slightly longer than broad _(33:29), form similar to that of C. sinaloae but without the lateral depressions and with the

median

^fissure very

much

less distinctly marked.

The

post

median smooth

space^isnotraisedand^isintheformofanarrowline. Elytralpunc- turesfinerthaninthe precedingand

become

obsoletenear apex.

The

_ground

color is pale testaceous; the base ^is dark, the dark _extending toward the apex ^for a short distance at the humeri and onthe _disk, there isa

medium

fascia which is broken into three spots on each _elytron, the middle one of which is largerandis

more

apical in position;near the apex ^isa transverse fascia apparently

composed

^{of four} large spots,

two

on each _elytron, the spots just touching.

Under

parts of the thorax _piceous, of the

abdomen

pale.

The

_legsare pale butfor the knees which are dark, the dark color sharply

demarked

fromthe_pale. Length11-12

mm.

Described from four specimens,

^allfemales, collected at

Venodio,

Sinaloa,

Mexico, June ²⁷

^to

July

^{10, 1918,}

A. Kusche,

collector.

Type. No. _{22558, U.}

S.

N. M.

DESCRIPTIONS OF SIX NEW WASPS (HYM.).

BY

S. A.

ROHWER,

Bureau _of Entomology.

The

six

new _wasps described

in

the

_following

pages were sub- mitted

for identification

by Dr. Chas. Robertson. The _types

of all of

them

are in

the

collection of

the U.

S.

National Museum.

Elis floridanus,

new

_species.

In

_size,

appearance and

structure this

new

_species ^is

much

like interrupta (Say)^,

but

^it

can

_readily

be

distinguished

by the yellow

PROC. ENT. WASH., VOL.

22,

NO.

_3,

MAR., 1920 55

posterior

margin

^of

^the pronotum. ^{In the}

^{color of}

^the pronotum

it

resembles

qwinquecincta (Fabricius), atriventris

Gahan,

etc.,

but

itdiffers

from

these species ⁱⁿ

the

sculpture of the

pronotum ^and propodeum.

Female. Length, 15

mm.

Anteriormargin^ofthe clypeus broadlyrounded, the surface of clypeus convex and with a median _ridge, opaque with close fine punctures and withlarge irregular punctures ⁱⁿaddition; front shining, unipunctate, ventrally the punctures ^{are closer}

and

sometimes _confluent;

vertex, occiput

and

_templesshining, with widely separated punctures; post- ocellar line about two-thirds the length of the ocellocular line, a distinct, transverse impressed ^line behind lateral ocelli; second to fourth (inclusive) joints ofantennaedentateatapexbeneath;^dorsalaspectof

pronotum

closely bipunctate, the larger punctures sometimes _confluent; scutum shining with separate^distinctpunctures,finelygranular along the anteriormargin;scutel-

lum

_shining, with _large rather close punctures; ^dorsal aspect of

propodeum

opaque

by

^fine granulations,

and

in addition with rather _small, distinct puncturesevenly distributed over the^entiresurface;posterioraspect ofpro-

podeum

subshining, finelycloselypunctured, at the top withafew _irregular, transverse _wrinkles, ventrally with

some

^fine dorsal-ventral striae; sides of

pronotum

striate; mesepisternum shining, with large, rather close, distinct punctures;^{sides of}

propodeum

striate;abcissae ofradius inorder of length fromshortestare_3,1,2;tergitesshiningwithwell-separated, smallpunctures;

pygidium with complete, uniform striae. Black; mandibles, except apices,

two

lateral spots on _clypeus, a broad

band

above antennae, inner margins of eyes, a narrowlineanterior to ocellus, posterior orbits, a narrow_irregular lineacrossthe_occiput,elongatelateralspotsonanteriordorsal aspect^ofpro-

notum

whichextend onsides, narrow_posteriormarginofpronotum,tegulae, lateral and amedian _spoton scutum, spoton _scutellum, lineon

metanotum,

large spoton mesepisternum, lateral angles ofpropodeum,

band

onanterior dorsalmargin ^{of first} tergite (broader laterally), lateralspot on second ter- gite,

band

on _third, fourth, fifth, tergites anteriorly (slightly narrowed

me-

dianlyand onfifthsubinterrupted), spotonsides ofpygidium, and spotson second and third sternite yellow; legs reddish, coxae, except a yellow spot, black, lines on femora

and

tibiae yellow; wings yellowish, anterior margin offrontwingssmoky;^venationyellowish;scapebeneath_piceous.

The

_paratypefemale has theentireanterior dorsalmargin^ofthepronotum, a _posterior spoton mesepisternum, spotson sternites fourand _five, a band atbaseofpygidium and^a mediandorsalspotonthe

propodeum

yellow.

Male. Length, 15

mm.

Clypeus with large, confluent punctures, the anterior margin with a shallow arcuate emargination^; supraclypeal area ^dis- tinctlyridged; lower partoffront_closely punctured, theupper part,occiput

and

_temples shining and with well-separated punctures; an elongate fovca betweenbases ofantennae; postocellar^linethree-fourths aslongas ocellocu- lar _line; antennae _reaching tobase of propodeum, third jointabout halfas long as fourth;

pronotum

shining,with separate ^distinct punctures;scutum.

56 PROC. ENT.

SOC.

WASH., VOL.

22,

NO.

_3,

MAR., IQ2O

scutellum

and

mesepisternum shining with distinct separate punctures;

median

_impressed lines on

scutum

foveolate; dorsal aspect of

propodeum

with large, distinct punctures

and

posteriorly with irregular raised lines in addition; posterior aspect ^of

propodeum

transversely ^striato-punctate; side of

propodeum

striato-punctate; second abscissa of radius longerthan the third;

abdomen

_shining with a few widely scattered punctures; pygidium

flat. Black; mandibles _{exceptapices,} clypeus, innerorbitsto emargination,

two

spots between antennae, scape beneath, anterior (slightly interrupted medianly) and posterior margins ^of pronotum, tegulae, small lateral

and

a largemedian spot on scutum, spotonscutellum

and

_{metanotum, largespot}

on

anterior part^ofmesepisternum

and

a small posteriorspot,spotonlateral angles of propodeum, apical

band

on _tergites one to six inclusive (slightly narrowed medianly) andspotsonsternites

two

to six inclusive, yellow; legs black, spotson coxae, four anteriorlegs

beyond

^{middleof femora and} apical half ofhindfemorayellow;posterior tibiae

and

tarsitestaceous;wingshyaline with apices dusky;venation testaceous except ⁱⁿ dusky ^{area of} wing where

it is brownish; clothedwithsilvery hair which isespecially denseonventer ofthorax.

In the paratype ^{the hind}

^{tarsi are}

mostly

yellow.

Type

locality.

Inverness,

^Florida.

Described from two

fe-

males and two males

collected

by ^{Charles Robertson and under}

his

numbers 24949

_(type),

24948

(allotype),

24987 and 25009.

Type. Cat. No. _{22731, U.}

S.

N. M.

Elis propodealis,

new

species.

In

size

and

_general

_appearance

this species looks

very much

like

E. quenquecincta

(Fabricius),

but can

_easily

be distinguished from that

_species

by the unsculptured

^{sides of}

the propodeum, the bipunctate pronotum,

^etc.

Female. Length,20

mm.

_Clypeusridged medianly, the surfacewith_large sometimes confluent punctures, anteriormargin rounded; ^front shining with large sometimes confluent punctures; ^frontal furrow deep

and

distinct, ex- tending ^half the distance to the anterior ocellus; postocellar ^line not _quite twiceaslong^asthe ocellocularline; vertex shining

and

withlarge, separate, distinct punctures; temples with ^smaller and fewer punctures; dorsal aspect of

pronotum

^and the

scutum

bipunctate; scutellum with _{large punctures} dorsally but small close ones _laterally; dorsal

and

posterior aspect of pro-

podeum

subopaque, the dorsal basal middle with a few large, shallowpunc- tures, the topofthe posterior aspectwith one ortwotransverse rugae; ^sides of

pronotum

^withfine,close,curvedstriae;mesepisternumshining,withlarge, distinct punctures; ^{sides of}

propodeum

shining, without distinct sculpture;

abdomen

shining; pygidium with uniform striae, the apical margin slightly produced medianly. Black; mandibles _{(except apices), trophi, apical part}

PROC. ENT. WASH., VOL.

22, 3,

MAR., IQ2O 57

ofclypeus, inner eye margins narrowly, ^a spot above each _{antenna, neck,} spot on each anterior dorsal corner of pronotum, posterior margin ^of pro-

notum

_narrowly, tegulae, spot on_scutellum,

metanotum

medianly, spoton mesepisternum below _{tegula, elongate spot} on _posterior lateral angles of propodeum, ^a broad narrowlyinterrupted

band

onfirst tergite, lateralspots

on

secondtergite,anteriormarginof third,fourthandfifthtergites (emargin- ate posteriorly),and^lateralspotsonsecond,thirdandfourthsternites, yellow;

legs black, dorsal

and

ventral spotson hindcoxae,and more orlessofapices ofallthefemorayellow;tibiaeandtarsiyellowish ferrugineous;wingshyaline withaduskytinge,the_apicalanteriormargindistinctlydusky;venationdark brown;hair yellowish.

In the paratype

^{there are}

^the

following additional

yellow marks

:

a small spot above the

_tegula,

a spot on

_posterior

margin

^of

mes- episternum,

^a

spot on

side of

propodeum, most

^of

^four

posterior

femora,

^dorsal

aspect

^of

metapleurae.

Type

locality. Inverness, Florida.

One female

collected

by Charles Robertson and under

his

number 25052. One fema

¹e

from

Virginia

Beach,

Va., collected

Aug.

31, 1903,

by ^E.

^S.

^G.

^Titus.

Type. Cat. No. 22611, U.

^S.

N. M.

Lindenius robertsoni,

new

species.

Because

of

the simple mandibles

this species

runs

directly to

Lindenius

in

Ashmead's

classification

and

_{placing generic}

_impor- tance on

this

character would make

it

necessary

to place^it there.

In Fox's arrangement, however, the

species

runs best

to planipes

Fox but

differs

from that

_{species in}

many important

characters.

The

_species is

excluded from "group pinguis"

^{as defined}

by Fox

in the flattened fore tarsi

and absence

of a

pygidium.

^It

seems very

likely

that the males

of

Lindenius,

^{as defined}

by having ^the mandibles _simple

_{at apex,} will possess a

wider range

^of

characters than allowed

inthe definition ofthis

group by ^Fox.

Male. Length, ^4.5

mm.

Anteriormargin^ofthe clypeus

armed

withfour obtuse teethofnearly equalsize;shortest distancebetween_{the eyes}abouttwo- thirdsthe length^ofthescape;uppermargin^ofthefrontaldepression defined

by

a sharp carina from the anterior _ocellus; area immediately above^{the carina} defining the frontal depression coarsely reticulate-punctured; supraorbital fovea_obsolete;vertexandcheeks_shining, almost without _sculpture;occiput with a strong carina which is foveolate in front,cheeksnotdentate; scape

somewhat

flattened and broader apically; flagellum short, stout, about one and one-half times as long as scape, thefirstjoint slightlyproducedapically beneath, second and third joints

somewhat

narrower so at firstsight ^tin- flagellum seems emarginate^atthe base beneath, jointsfourandfiveslightly produced beneath; ^anterior margin ^{of the}

pronotum

carinate, not dentate laterally; prothoracic tuberculc carinate anteriorly so

when

seenfromabove

58 PROC. ENT.

SOC.

WASH., VOL.

22,

NO.

_3,

MAR., 1920

itappears

somewhat

dentate; anteriormarginofthescutum witha transverse- carina,

two

short

median

ridges anteriorly;

scutum

shining, with separate setigerouspunctures; scutellum subshining,withafew longitudinal wrinkles;

top ^of

propodeum

^with large irregular areas defined

by

carinae, the median one the _largest and trapezoidal in outline; posterior aspectof

propodeum

foveolatelaterally,witha

median

elliptical-shapedfovea;sidesof

propodeum

smooth,shining;mesoplurae smooth,shining;anteriortarsistronglyflattened;:

calcaria of the hind tibiae stout, the longer one almost_{as long} asthe hind basitarsus; recurrent vein _slightly before the middle of cubital _cell; inter- cubitus joining radius^itslengthfromthe stigma;

abdomen

_{smooth, shining,} without apygidium. Black; mandibles, scape beneath, spotson pronotum, tubercule,twospots before the scutellum, yellow; legs black, anterior _legs below middle offemora, intermediate^tibiae

and

tarsi, posterior tibiaeexcept a spot within, and hindtarsiyellow;apex^of

abdomen

rufous;wingshyaline;

venation brown; head

and

thoraxwith_silverypubescence.

Type

locality. Carlinville, ^Illinois.

Described from two males

collected

by ^{Charles Robertson and recorded under}

^his

numbers 22928

_(type)

and 22927.

Type. Cat. No. _{22728, U.}

S.

N. M.

Anacrabro robertsoni,

new

_species.

Resembles A.

ocellatus

Packard but the markings

^are paler,

the abdomen

isless coarsely

punctured and ^the mesonotum

is

opaque and more

_closely

_punctured.

Female. Length,⁶

mm.

Clypeus stronglyconvex medianly, the anterior margin slightly produced medianly; head subshining, with the usual _fovea,

and

carinae the_largepunctures separate^;anteriordorsal marginof

pronotum

carina_te, the lateral angles strong;

scutum

subopaque; closely confluently punctured on a granularsurface; scutellum subshining with _{large separate,} distinctpunctures;

propodeum

^witha

row

of large foveaeonthe dorsal sur- face,theposterior facewitha

median

triangularly shaped^area;mesepsternum with separate, distinct punctures on a granular surface; sides of

propodeum

finelypunctured^;

abdomen

_shining,withwell-separated smallpunctures,larger onthefirstbecoming^smallerapically until onthe _apical segments they^are only setigerous pits; pygidium shining, one-fourth longer than the basal width, narrowly rounded apically, with large, separate punctures. Black;

two

small spots onthe clypeus, submediandorsal spotson pronotum,^tuber-

cles, metanotum, ^lateral spots onall the _tergites, whitish; legs black, tibiae andbaseof tarsi esteriorlywhitish;wingshyaline basally,brownishapically;

venation black;body,especiallythe cheeks, withshort_silverypile.

Type

locality. Inverness, Florida.

Described from one female

collected

by Chas. Robertson,

^for

whom the

_speciesis

named.

Type. Cat. No. _{22612, U.}

S.

N. M.

PROC. ENT. WASH., VOL.

22, 3,

MAR., 1920

Tachytes duplicatus,

new

_species.

Very

^closeto T. calcaratus

Fox and

_agrees

with the type except

asfollows^:

T. calcaratus Fox.

1. Bristles of pygidium ^{of a} golden color

and

extending ^{to lateral} margin.

2. Pygidium

more

elongate

and

nar- rower_apically.

3. Second abcissa of radius shorter thanthird.

4. Mesepisternum sparsely pilose, thepilegrayish.

5.

Abdominal

bristlesbrownish.

T. duplicatus,

new

_species.

1. Bristles of pygidium ^reddish

brown and

not reaching^lateral margin.

2.

Pygidium

^shorter

and

the apex broader.

3. Second

and

third abcissae of radius subequal.

4. Mesepisternum densely pilose es- pecially on dorsal partof pre- pectus, the pile witha distinct goldentinge.

5.

Abdominal

bristlesblack.

Type

locality. -Inverness, Florida.

Described from one female

collected

by ^{Charles Robertson} and under

his

number 24981.

TypeCat. ^{No. 22614, U.}

^S.

^{N. M.}

Tachytes pepticus ^var. floridanus,

new

variety.

Male. Length¹⁰

mm.

Differsfromthe_typicalforminhaving^the

scutum

andscutellum shining

and

_punctured (notopaque, finelygranularand punc- tured); ⁱⁿthe shiningalmost sculptureless sides ofpropodeum;^{in the rather} narrowerapical sternite; andinhaving^the medianprojection ^ofthe clypeus

more

_distinctlydepressed.

Type

locality. -Inverness, Florida.

Described from one male

collected

by ^{Charles Robertson} and under

his

number 24824.

Type. Cat. No. _{22730, U.}

S.

N. M.

A PROCTOTRYPID _INQUILINE WITH FORMICA EXSECTOIDES FOREL. _(HYM.).

BY WM. M. MANN,

^{U. S.} Bureau _of Entomology.

On the Conduit Road, about

three miles east of

Great

Falls,

Maryland,

^is

a very

^{fine cluster of}

Formica

exsectoides

mounds.

In October,

1919,

Mr.

_J.

C. Crawford and

the writer

made two

collecting excursions to these

and found a number

of

myrmeco-

philous ^insects.

On the

surfaces of

the

nests

two

case-bearers, Coscinoptera sp.,

and a Pyralid moth were numerous, Myrme-