A Revised List of the Diptera of Bermuda.
Psyche 11(4):76-80, 1904.
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ISED LIST OF THE DIPTERA OF BERMUDA.
BY CHARLES W. JOHNSON, BOSTON, MASS.
11 previous records, together with several r. C. Abbott Davis is brought together to show f the Diptera of the Bermudas, and the work necessary to a more satisfactory condition. The first recorded Diptera were a few without positive determination in "The Naturalist in Bermuda " by J. Matthew Jones, page I 23;. 18 jg. In the " Visitor's Guide to Bermuda" by the same author, 1876, page 143, is a list of seven^species determined by Baron Osten Sacken, and two by Walker. Dr. P. R. Uhier ("Obser- vations on the insects of the Bermudas,") in " The Bermuda Islands " by Angelo Heitprin pages 153-158, 1889, records three species. Dr. Fred. Dahl, "Land- fauna of the Bermudas," Plankton Expedition, Vol. I, A, 1892, page 109, records about eight species. The most complete account bearing on the Diptera is that given by Prof. A, E. VerriIl in his work "The Bermuda Is!ands," published in the Transaction of the Connecticut Academy of Arts and Sciences, Vol. XI, pages 74-49. qm-oa. In this work about thirtythree are recorded. The present list contains about fifty species; of this number, fifteen have been added by the collections made by Mr. Davis during a part of July and August, 1903, ch, 1897. The fauna seems for the most
nited States and West Indies, and is probably gradually augmented from these sources. The richness of the flora would te a greater number of species and careful collecting at all seasons of the ar will undoubtedly add many species to the fauna, \
icranomyia distans 0. S.
This seems to be the only species recorded. Prof.
species, and Mr. Davis captured Puchyrrhiiw C~TLICIDAE.
Walk. Several specimens of this and the following species recorded by Theobald in his Monograph
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ation in " The
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Diptera is that
ublished in the
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i August, 1903,
ms for the most
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1. his Monograph
JOHNSON: - DIPTERA
of the Culicidae I, p. 28, from collections made in July, 1899, by Dr. Eldon Harvey.
- ppp pp
Stegomyia fasciata (Fabr.). The yellow-fever mosquito. ThispZies,=dZdpp ppp by both Theobald and Verrill, was also taken by Mr. Davis. CHIRONOMIDAE.
Recorded by Prof. Verrill.
Recorded by J. M. Jones in 1876.
Scatofie atrata Say.
Determin.ed by Mr. Coquillett and recorded by Prof. Verrill.
Under this genus two species are referred to by Dr. Uhler. TABANIDAE.
Tabanus nipvittatns Macq.
Several specimens were taken by Mr. Davis, July 14-22.
This is probably the species referred to by Dr. Uhler as "one of the smaller horse-flies related to T. lineoh Fabr., but in color resembles the T. cincta Fabr . ''
Tabamis sp. "Of rather large size and with a large green head, is also corn- mon "( Errill) .
Asilus? sp. ?
"A Robber-fly belonging to Asilus or some allied genus is described in Miss Hayward's notes " ( VerriZZ). "
Sciapus chrysoprasus Walk. The species referred to as "Psiloftts chrysoprasi- nus Wied." by Dr. Fr. Dahl, is undoubtedly the same. PHORIDAE.
Recorded by Prof. Verrill.
78 PSYCHE. Q [Aiigmt
mma mftr@atw14 Say. A number of specimens were collected by St. Georges, July 9.
AIZograpta oWqtia Say. A common species of the islands, obtained by Mr. Davis, July 8-n.
Also reported by Mr. Jones in 1876, and by Prof. Verriil. Erisfalis fenax Linn.
One specimen was collected by Mr. Davis on July 10. Lothyrophthalmus aeneus Scop.
Two specimens were taken by Mr. Davis,
July 14 and 2 1.
This species which is more familiarly known as Eristalis ae7iens was also collected by Dr.-Fr. Dahl in 1892. Sarcofhaga camaria Linn. Both Prof. Verrill and Uhler refer specimen to this species.
Among the numerous specimens collected by Mr. Davis the true S. earnaria is not represented.
The specimens are nearer S. rabid0 Walk. also recorded by Prof. Verrill, but the present unsatisfactory condition of our Sarcopha- gids prevents me from positively determining the species. Sarcophaga sp. ?
A smaller form of which a number a‰ specimens were col- lected by Mr. Davis, July 8.
Helicobia helitis Town.
Two specimens were collected by Mr. Davis. SarmphaytZu sf.
Recorded by Dr. Dahl.
CaZZiphora voriiitor'ta Linn.
Recorded by Prof. Verrill,
LnciUa seniatu Meig. Numerous specimens were collected by Mr. Davis. iwciKa Zafifrws Schin, Recorded by Dr. Dahl. and also by Prof. Veirill. Probably only a variety of the preceding. LttciZia caesar Linn. Recorded by Prof. VerrUl. MUSCIDAE.
Mica domestics Linn. Common. The smaller form in which yellow is the predominating color of the abdomen is the M. basilaris Macq. It hardly deserves varietal distinction.
Stornoxys caldrans Linn. Recorded by Prof, Verrill. ~THOMK~DAE..
Ophyra cumseem Wied. A number of specimens re collected by Mr. Davis at St. Georges, July 9 ; also by Mr. T. L, Montgomery in March, 1897,
obtained by Mr.
avis on July 10.
1 by Mr. Davis,
fer specimen to
bavis the true S.
Wa Walk. also
3f our Sarcopha-
5mens were col-
y Prof. Verrill.
h yellow is the
d by Mr. Davis
Anthomyia lepida Meig.
Recorded by Jones, I 876.
Fannia femorala Loevv.
Several specimens were collected by Mr. Montgom- ery in March, --- -- 1897. - - - - --
Limno$hora cyrto~zenrina Stein.
Obtained by Mr. Davis, July 14.
AQdzea sp- ?
One imperfect specimen collected by Mr. Davis July 17. "Phorbia cejorum = A~~thumyitz iepamm,)' '' Onion fly," "We were told that this species occurs, but obtained no specimens of it." ( VerriZZ.)
FuceZZia frtcorutn Full.
This is probably what is meant by " Incellia fucorine" in Jonesy list.
Dr. Dahl also refers to a species as Fud-eZ/ia sp. Scatuphaga sp. ?. Recorded.
Tetanocera spinicornis Loew.
Collected by Mr. Mobray, May 30, and by Mr. Davis, July 8-
Recorded by Jones in 1876.
Chiefo/sis aenens Wied.
Recorded by Jones, 1876.
Aciura /~zsec/a Loew.
Two specimens were collected by Mr. Davis at St. Georges, July 9.
Several specimens were taken by Mr. Davis at St. Georges, July 9.
Trypeta hunzilis Loew, is a synonym.
Ceratifis capifaia Wied. "Peach-fly." This species was first recorded from Bermuda by Messrs. Riley and Howard as "A Peach Pest in Bermuda," Insect Life, 111, p. 5, figs. 1, 2 ; also p. 120, 1890. This species, which also infests the orange, was probably introduced from Madeira, the nearest locality from which it was previously recorded.
PIffJhiZa cmi Linn. The cheese-fly. Recorded by Prof. Verrill.
- - E.phydra_ausfrina Coq. One specimen-collected by-Mr. Davis.-- - Paratissa pollinosa (Will.).
A number of specimens were collected by Mr. Davis, August 5.
DrosojhiZa punctulata ~oew.
A number of specimens were obtained by Mr. Davis at St. Georges, July 9.
Dmophila a7npeZophila Loew. The fruit-fly. Record by Prof. Verrill as very
abundant on decaying fruit, associated with other related species. -
. Ophthalmomyia lacteipennis Loew. Two specimens were collected by Mr. Davis at St. Georges, July 2 1.
One specimen was obtained by Mr. Davis.
One imperfect specimen, much smaller than the preceding. Dr. Dahl also records an undetermined species found on dead sea-weed. b
DIESTRAMMENA UNICOLOR IN NORTH AMERICA. - I have lately received a female of this East Asian species which was captured in a greenhouse in Chicago, III., from Mr. W. J. Baumgartner. Its congener, marmorata, reported to have established itself in conservatories at Minneapolis, is likewise of Asiatic origin. Both species doubtless owe their introduction to commercial importations of foreign plants, among the wrappings of which they easily secrete themselves.- A. P. MORSE.
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