C. W. Johnson.
A Study of the Clusiodidæ (Heteroneuridæ) of the Eastern United States.
Psyche 20:97-101, 1913.

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PSYCHE
VOL. XX. JUNE, 1913. NO. 3
A STUDY OF THE CLUSIODIDE, (HETERONEURIDB) . OF THE EASTERN UNITED STATES.
BY CHARLES W. JOHNSON.
Boston Society of Natural History,
.
Since the publication of the "Revision der Heteroneuriden" by P. Leander Czerny (Wien. Ent. Zeit. XXII, 61, 1903), it has been apparent to the writer that there were many discrepancies and er- rors in the determination of the American species. The want of material, however, has caused me to hesitate in attempting to define our species more clearly. It seems imperative that these errors should be corrected and brought to the attention of future workers.
The species seem to separate quite readily into the genera de- scribed by Czerny and Coquillett, based on the arrangement of the cephalic bristles, and later tabulated by Dr. Williston in his "Manual of North Americap Diptera."
Clusiodes Coquillett.
For the genus Heteroneura Fallen 1823, not 1810, Coquillett pro- posed the genus Clusiodes 1904, Type H. albimana Meigen. The
four species belonging to this genus may be tabulated as follows: 1. Wing with the clouding on the anterior portion confined to the apical third. . .2 Wing with the clouding extending from the end of the first vein geomyzina Fall. ............... ..........
2. Legs with the anterior tarsi more or less black. : .3
Legs entirely yellow; face of the c? black.. ........... melanostoma Loew, 3. First, or the first two anterior tarsal joints black, the others white albimana .Meig.
All of the anterior tarsal joints in the ? and the last three or four joints in the c? black. .......................................... pietipes Zett. Clusiodes geomyzina Fallen.
Heteroneura geomyzina Fall., Agromyz. 2. 2. 1823; Czerny, Wien. Ent. Zeit., XXII, 77, Taf. I, f. 1, 2 and 4,1903.
One specimen was taken by the writer at Machias, Me., July 19, 1909, the first American record.
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Psyche [June
Clusiodes melanostoma Loew.
Heteroneura jlavgacies Coq. MS. in Mrs. Slosson's List of Mt. Washington In- sects, Ent. Newsy JTIII, 239, 1897, not "Smith's Kew Jersey Cat.," as stated in Aldrich's Cat., p. 570.
The fourteen specimens before me show the following distribu- tion: Maine-Northeast Harbor, July 12 (Dr. C. S. Minot) and Machias, July 19, 21 (C. W. J.); New Hanipshire-Franconia .
and Mt. Washington (Mrs. Slosson) ; Vermont-Norwich, July 7, and Mt. Ascutney, July 11 ; hXassachusetts-A4uburndale, June 15, 21, Mt. Greylock, June 15, and Chester, May 26, $28 (C. W. J.); Montreal, Can., July 14, (Beaulieu).
Clusiodes albhana Meigen.
Thirteen specimens show the following distribution: Maine Capens, Moosehead Lake, July 14 (C. W. J.); New Hampshire Intervale, August 23 (G. M. Allen); Vermont-Burlington, iJune 24, St. Johnsbury, July 28, Norwich, July 8, Mt. Ascutney, July 11, and Manchester, June 4 ; Massachusetts-IVashington, August 8, Bash Bish Falls, June 27 (C. W. J.); New Jersey-Delaware Water Gap, July 12; Canada-Rouville County, Quebec (G, Cha,gnon) .
Clusiodes pictipes Zetterstedt .
Mt, Washington, N. H., Coquillett in Mrs. Slosson's List of Mt. Washington Insects (Ent. News, VIII, 239, l89'i'). The oc-
currence of this species in North America is somewhat doubtful. Heteromeringia Czerny
The following species, placed under this genus, are distinguished by the absence of frontal cross bristles. The four species may be
separated by the following table:
1. Species in which yellow predominates. ................................... .2 ................................................ Species entirely black. .3
2. Thorax entirely yellow, cephalic bristles yellowish. .......... .ji?aviseta sp. nov. Thorax with a large black lateral spot or stripe, cephalic bristles black latifrons Loew ,
3. Anterior legs entirely yellowy posterior femora and tibize annulated; wing clouded beyond the end of the fifth vein. ..................... .annulipes sp. nov. Anterior tibize and tarsi, and apical half of the femora black; wing clouded before the end of the fifth vein. .......................... .nitida sp. nov.



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19131
Johnson-A Study of the Clusiotlid~ (Heteronez~ridce) Heteromeringia latifrons Loew.
Heteroneura latifrons Loew.? Wien. Ent. Monatssch.? IV, 89, 1860. Twelv,e specimens show the following distribution: Massachu- setts-Auburndale, August 13, Weston, July 23, Chester, August 7; New -Jersey-Delaware Water Gap, July 15; Pennsylvania- Lake Ganoga, North Mt., August 29.
Heteromeringia flaviseta, sp. nov,
Female: Face, cheeks and lower half of the occiput whitish? fronl and upper half of the occiput light yellowy antenne and a space above their base? fulvous yellowy arista blackish; frontal and vertical bristles yellowish. Thorax? scutellum~
and metanotum yellow, humerus? pleura and coxz white. Abdomen yellowy the
tip of t,he fourth, all of the fifth? and the dorsal portion of the sixth segment, brownish black? tip of the last segment margined with white? ovipositor yellow. Halteres qnd legs yellowish white. Wings yellowish hyaline, apical third slightly cloudedy especially near the veins. Length 4 mm. Two specimens.
Holotype, New Brunswick, N. J., May 28 (Dr. J. B. Smith),
Paratype, Pt. Lee, N. J.
Types in the author's
Collection.
Heteromeringia annulipes sp. nova
Face and cheeks white, lower part of the front and orbits yellow; upper part of the front, the vertex and occiput black? palpi and antenne yellowy apical half of the third joint and arista dark brown. Thorax, upper half of the pleura, scutel- 1um7 metanotumy and abdomen, shining black; lower half of pleura, legs and hal- teres yellowish white; tip of the posterior femora and tibiz annulated with dark brown. Wings hyaline, apical third? and a small area at the anterior cross-vein, and end of the discal celly slightly clouded with smoky black. Length 3 mm.
One specimen, Murfreesboro, Hertford County, N. C., June 9, 1895. Type in the author's collection. This species resembles Heteroneura jtavipes Will., but the annuli on the posterior legs and the apical clouding of the wing, which is entirely beyond the end of the fifth longitudinal vein, readily distinguish the species. Heteromeringia nitida sp. nov.
Male: Face yeIIowish, orbits whitish pruinose, cheeks shining black; front black, opaque? vertex shining; antennz yellowish, tip of the third joint and arista dark brown. Thorax dull black? pleura and abdomen shining black; legs yellowy the anterior legs except the cox= and basal half of the femora? black, base and tip of the posterior tibize dark brown. Halteres white. Wings smoky? darker along the anLerior portion beyond the midde and near the cross veins. Length 3 mm.




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100 Psgche [June
The female differs but little from the male except that the front is entirely shining black. Length 3.5 mm. Three specimens. Holotype and allotype from Goose Neck, near Long Branch, N. J., June 12, 190% Paratype, Riverton, N. J., May 14. All are in the author's collection. In the "Insects of New Jersey" this was erroneously referred to Heteroneura pictipes which it resembles superficially and, barring the absence of the frontal "cross bristles," agrees fairly well with the description of that species. It is also closely allied to Heteromeringia nigrimana Loew. but the shining black cheeks and white halteres seem to separate it from that species. Clusia czernyi sp. nov.
Male: Upper half of the face black,~orbits and lower half including the cheeks, white, proboscis and palpi white, front yellow, antenn~ light yellowy arist? and ocelli black. Thorax yellow, pleura with a wide, black, shining sl ripe extending from the neck to the base of the abdomen, the rest of the pleura and sternum yellowish white.
Abdomen yellow with wide lateral stripes of black. Legs yellowish, base of the femora and the cox= whitey base of the posterior tibi~ brownish, halteres white. Wings grayish hyaline, with a middle and apical band of black, broadly connected by a band filling a11 of that portion of the marginal and submarginal cells. Length 5 mm.
Female: Face yellow with two black stripes extending from ihe base of the an- tennte to the oral margin, tips of the palpi black. The broad lateral stripes of the abdomen are interrupted at the fifth segment. Ovipositor yellow, Length 6 mm. In other respects resembling the male.
Seventeen specimens.
Holotype and allotype, Northeast Har-
bor, Me., July 1, 1909 (Dr. Charles S. Minotj. In the collection
of the Boston Society of Natural History. Paratypes, Northeast
Harbor, Me., June 3, July 4, 19 and 23 (Dr. Minotj, Eastport, Me., July 15, Mt. Equinox, Vt., June 5, Chester, Mass., May 25 and 27, and North Mt., Pa., June 8, 1898 (C, W. Johnson); Fran- conia, N. H. (Mrs. A. T. Slossonj; Holland, N. Y., May 21 (M. c. Van Duzee); Sport Island, Sacandaga River, K. Y., June 16, 1910 (C. P. Alexander).
This species has been confused with C. lateralis, from which it can be readily separated by the double banding of the wings and the broader and more continuous lateral abdominal stripes. Both species have a similar distribution but C. lateralis usually appears somewhat later in a given locality. At Chester, Mass., C. lateralis was common in August but was not observed in May.



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19131 Johngon-A Study of the Clusionid~ (Heteroneurid~) 10 1 Clusia lateralis Walker.
Heteroneura spedabilis Loew,, Wien. Ent. Monatschr. IV, 82. The nineteen specimens before me show the following distri- bution: MaineNortheast Harbor, July 4 (Dr. C. S. Minot); Vermont-Norwich, July 7, Burlington, June 23, and St. Johns- bury, June %'; Massachusetts-Auburndale, August 9, Chester, August 4-7, and Bash Bish Falls, June 27; Connecticut-Middle- tom, June 19; New Jersey-Riverton, July 6; Pennsylvania- Folsom, June 12, and Glenside, May 26 (C. W. Johnson); Canada, (Beaulieu), July 16.
Chtstoclusia ailinis sp. nov.
Male: Head light yellow, palpi and antenn~ yellow, arista black, densely plu- mose, ocelli black. Thorax yellow, abdomen brownish, tip yellow. Legs yellow,
anterior tibi~ and tarsi brown. Halteres yellow. Wings yellowish hyaline. Length 9.5 mm.
Female: Similar to the male except that the anterior tibize and tarsi are black and the abdomen shining with an obscure dorsal line and black tip. Length 3 mm. Holotype, Riverton, N. J., June 18 (C. W. J.); aIIotype, James- burg, N. J., July 15 (J. B. Smith). Both in the author's collection, The Jamesburg specimen was referred doubtfully to Clusia flava Meig. in Smith's Insects of New Jersey. The Fort Lee specimen also referred to that species is H. flaviseta. As this is the only American record for C. $ava, it should be omitted from the list of North American Diptera.




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