Photos / Sounds

Observer

naturephotosuze

Date

May 22, 2024 11:43 AM PDT

Description

Dexter Park

Photos / Sounds

Date

May 11, 2024 03:55 PM PDT

Photos / Sounds

What

Long-tongue Horse Flies (Subfamily Pangoniinae)

Observer

souhjiro

Date

April 14, 2022 12:57 PM -05

Photos / Sounds

Observer

oebenin

Date

August 29, 2020 03:24 PM CET

Photos / Sounds

Observer

superegnum

Date

June 7, 2011 09:51 AM WEST

Photos / Sounds

Observer

faluke

Date

September 12, 2014 08:32 PM CEST

Photos / Sounds

Observer

patricklm35

Date

October 8, 2013 11:20 AM CEST

Description

pondant sur toiles des chenilles d'Evergestes extimalis

Photos / Sounds

Observer

obi_

Date

August 2023

Photos / Sounds

What

Whitney's Horse Fly (Merycomyia whitneyi)

Observer

gaudettelaura

Date

September 2, 2021 09:30 PM EDT

Photos / Sounds

Observer

treegrow

Date

August 22, 2017 01:37 AM EDT

Description

Oestrophasia calva female. Portal Peak Lodge, Chiricahua Mountains, Cochise County, Arizona, USA.

Photos / Sounds

Observer

wayne_fidler

Date

September 10, 2019 08:54 AM EDT

Photos / Sounds

Observer

miller_museum

Date

July 4, 2020 04:00 PM MDT

Description

Collector: K.E.
Elev: 5184'
Temp: 74 °F
MMEW# 424
Nectaring on shoreline Sunflower. Private slip - North Poudre Reservoir Number 6

See Also: https://bugguide.net/node/view/2084732/bgimage

Photos / Sounds

Observer

lauraafiyb

Date

September 13, 2020 10:27 AM +03

Place

Hargeisa (Google, OSM)

Description

Camel nasal bot found after butchering camel

Photos / Sounds

What

African Rhinoceros Botfly (Gyrostigma rhinocerontis)

Observer

jessicatyrer

Date

April 5, 2022 08:13 PM SAST

Description

Is this Synolcus dubious?

Photos / Sounds

What

African Rhinoceros Botfly (Gyrostigma rhinocerontis)

Observer

karooicus

Date

March 1, 2022 08:09 AM SAST

Photos / Sounds

What

Bristle Flies (Family Tachinidae)

Observer

jackychiangmai

Date

April 9, 2023 11:03 AM +07

Photos / Sounds

Observer

naturephotosuze

Date

September 2, 2020 12:25 PM PDT

Description

Rucker Canyon

Photos / Sounds

Observer

vaughanjessnitz

Date

November 16, 2022 12:41 PM SAST

Photos / Sounds

What

Horse and Deer Flies (Family Tabanidae)

Observer

glennstockil

Date

December 24, 2022 09:33 PM CAT

Photos / Sounds

What

Horse and Deer Flies (Family Tabanidae)

Observer

mdjusri

Date

January 3, 2019 01:34 PM AWST

Photos / Sounds

What

Horse and Deer Flies (Family Tabanidae)

Observer

ktor

Date

April 30, 2019 04:34 PM +07

Photos / Sounds

Observer

anukma

Place

Malaysia (Google, OSM)

Photos / Sounds

Observer

siddantas

Date

December 3, 2021 09:40 AM -03

Photos / Sounds

Observer

siddantas

Date

August 22, 2020 02:27 PM -04

Photos / Sounds

Observer

blazeclaw

Date

March 1, 2020 07:41 AM MST

Photos / Sounds

What

Bristle Flies (Family Tachinidae)

Observer

miguelangelrnr

Date

August 6, 2022 09:33 AM -04

Photos / Sounds

Observer

ibycter

Date

February 18, 2011 11:56 AM AST

Place

Nouragues (Google, OSM)

Photos / Sounds

What

Giant Otter (Pteronura brasiliensis)

Observer

jpiolain

Date

August 2022

Photos / Sounds

Observer

olivier_fortune

Date

December 23, 2022 06:47 PM -03

Photos / Sounds

Observer

benoit_segerer

Date

July 2, 2022 02:11 PM -05

Photos / Sounds

Observer

stephen_wv

Date

May 21, 2013 10:09 AM -04

Photos / Sounds

Observer

nelson_wisnik

Date

April 27, 2020 11:47 AM -03

Photos / Sounds

What

Glire Bot Flies (Genus Cuterebra)

Observer

ibycter

Date

March 2, 2021 10:51 AM PST

Photos / Sounds

Observer

christianmarty

Date

April 8, 2022 11:45 AM -04

Description

Saul village

Photos / Sounds

Date

November 21, 2022 09:36 PM -03

Photos / Sounds

What

Horse and Deer Flies (Family Tabanidae)

Observer

cesarfavacho

Date

April 10, 2014 04:30 PM -03

Photos / Sounds

Observer

augusto50

Date

January 13, 2017 10:51 PM -04

Photos / Sounds

Observer

tarekbejaoui

Date

May 17, 2021 03:59 PM CET

Place

Magheraoua (Google, OSM)

Photos / Sounds

Observer

xespok

Date

September 2, 2006 03:53 PM CEST

Description

det. Theo Zeegers (diptera.info)
cf. species level I very vague
https://diptera.info/forum/viewthread.php?forum_id=5&thread_id=8961

Photos / Sounds

Observer

xespok

Date

July 30, 2008 06:22 PM CEST

Description

Photos / Sounds

Date

June 11, 2022 10:56 AM CEST

Photos / Sounds

What

Bristle Flies (Family Tachinidae)

Observer

pisum

Date

September 30, 2022 02:09 PM CDT

Description

there's something orange emerging from the end of this Wheel bug, and I assume the egg on its back (and another on its left front leg) is probably also from the same parasitic organism. maybe a feather legged fly.

Photos / Sounds

Observer

neilnicholas

Date

December 31, 2021 11:55 AM EET

Photos / Sounds

What

Redflank Needlenose Fly (Philoliche rubramarginata)

Observer

birdingislife

Date

October 4, 2020 12:32 PM UTC

Photos / Sounds

Observer

faluke

Date

May 2, 2022 08:43 PM CEST

Photos / Sounds

What

Bristle Flies (Family Tachinidae)

Observer

faluke

Date

May 2, 2022 11:00 AM CEST

Photos / Sounds

Observer

faluke

Date

May 22, 2022 01:29 PM CEST

Photos / Sounds

Observer

faluke

Date

May 22, 2022 12:06 PM CEST

Photos / Sounds

Observer

birdingislife

Date

March 20, 2022 03:38 PM EET

Photos / Sounds

What

Bristle Flies (Family Tachinidae)

Observer

dibra007

Date

August 27, 2022 06:17 PM WEST

Photos / Sounds

Observer

kostaszontanos

Date

June 22, 2022 10:20 AM EEST

Photos / Sounds

What

Longtongue Tanglevein Flies (Genus Prosoeca)

Observer

karooicus

Date

May 13, 2022 03:56 PM SAST

Photos / Sounds

Observer

cheryl394

Date

May 15, 2022 12:54 PM +07

Photos / Sounds

Observer

hauke_koch

Date

May 8, 2022 03:34 PM BST

Description

At oak processionary moth nest. Several individuals ovipositing.

Photos / Sounds

Observer

waldgeist

Date

May 14, 2022 04:09 PM CEST

Photos / Sounds

Observer

waldgeist

Date

May 11, 2022 03:20 PM CEST

Photos / Sounds

Observer

aispinsects

Date

April 2022

Description

Please note this is an informal description done for fun.

Female. 4 mm. Head short and round, slightly swollen, with integument reddish yellow on the parafrontals and becoming yellow on the parafacials and below, ocellar tubercle black, triangle undifferentiated, pruinescence nearly absent, thinly whitish on the gena and occiput. Occiput entirely black setulose, postocular row black setose. Front at vertex about 0.36 times head width, widening towards antennae. Parafrontals mostly bare, with several short black setulae restricted to the posterior half. Frontal vitta yellow, at middle about as wide as either parafrontal, widening slightly anteriorly. Postocellar setae present, parallel. Inner and outer vertical setae present, inner slightly longer, pair convergent and cruciate, setae meeting near the tips. Ocellar setae present, proclinate, situated between posterior and anterior ocelli. Upper reclinate setae present in 1 pair. Lower proclinate setae present in 8–9 pairs situated closely to frontal rows, extending down to nearly whole row. Frontal setae present in about 11 pairs, all inclinate, none descending below antennal bases, but lowest 2 oblique arrangement from main frontal row. Parafacials bare, wide, at narrowest about half the width of the face. Face concave, not visible in profile, without a median carina separating antennae, lower portion narrowed. Vibrissa barely differentiated as more robust setae, crossed, angle situated distinctly above lower facial margin. Facial ridge setose on lower third, supravibrissal setae of 4–5 setae. Antennae about a third as long as the height of the face, but situated on the upper fourth of the face, leaving about a third of the face below the antennae, bases narrowly separated by distance less than width of scape. Scape and pedicel yellowish. First flagellomere uniformly bright yellowish orange, rounded, 1.7–1.8 times as long as pedicel. Arista light brown, with tiny whitish area in the middle, cylindrical, nearly bare, as long as antennae or longer, first aristomere minute, second barely longer than wide, third thickened only on basal fifth. Gena with dark setulae, wide, about a third head height and half eye height, with groove extensive, ending nearly at facial ridge, forming a very large genal dilation. Eyes bare. Proboscis not elongated. Palpi present, well-developed, yellow, somewhat short and strongly expanded apically.
Scutum reddish, becoming yellowish on the humeri and the scutellum. Pleura reddish, mostly bare with few sparse, black, short setulae. Anterior thoracic spiracle yellow, small. Posterior thoracic spiracle reddish. Chaetotaxy: acrostichals 2+2-4 (2 posterior pairs distinctly developed, 2 anterior pairs weak); dorsocentrals 2+3; intrapostalar setae weak or absent; intraalars 1+2 (anterior about as far from suture as first dorsocentral); posthumeral 1 or 1+1; presutural 1; humeral 2, mostly bare posteriorly; notopleura 2, bare of setulae; supralar 2, anterior shorter than or about as long as dorsocentrals; postalar 2; prosternum bare; proepisternum bare, lower portion with 1 short seta, directed upwards; proepimeron with 2 setae, directed upwards; anepisternum with a posterior row of 6 setae, with 1 anterodorsal seta, 2 short setulae below it; katepisternal 2, with anterocoxal row of 4 setae curved posteriorly; katepimeron bare; anepimeron with a cluster of 4-5 short setae; meron with row of 6-7 setae; infrasquamal hairs on the postalar wall absent; scutellum with 6 pairs of setae total: a basal pair, 2 lateral pairs about the same size, curved, a longer convergent and cruciate subapical pair, a very short, convergent and cruciate apical pair, and a short discal pair. Disc of scutellum mostly bare, clothed with dark setulae except for a broadly bare basomedial area, without erect, subapical setae.
Legs moderately stout, entirely yellowish except for claws and pulvilli, covered in black vestiture, fore tarsi slightly darkened apically. Chaetotaxy: Cx1 with medial area bare, only setose at the margins; T1 with row of numerous ad (10 or more), 2 p; Cx2 with row of 8 or so anterior setae curved posteriorly; F2 with 2 a/av, 2 ad, 2 pv; T2 with 1 av, 2–3 ad, 2 pd; Cx3 bare posteriorly; F3 with 1 basal av, row of 5 d, 2 pv; T3 with 2-4 av, row of 10 ad, widely separated, of various sizes, 3 outstanding, row of 7 pd, widely separated, of various sizes, 2 outstanding. Tarsi with tarsomeres normal. Claws and pulvilli shorter than fifth tarsomere. Claws black, pulvilli whitish.
Wings pictured, with contrasting yellowish, brownish, and hyaline area. One crossband present. Picture as a yellowish costal area from base to middle of cell R1, reaching down to crossvein r-m, conspicuously a brown spot on the crossvein, and back to cover cell Br. Picture also brownish yellow on almost the entire basal portion of the wing and as a single disjunct apical crossband that crosses crossvein dm-cu and recurves to terminate near the middle of cell dm. Tegula and basicosta yellow. Costal spine distinct, in length about 1.5 times the width of the costa. Costal arc between vein Sc and R1 three or more times as long as costal spine. Vein R1 bare. Vein R4+5 basally and dorsally with 4 setae in a row less than a third of the distance to crossvein r-m, ventrally even shorter. Vein M sinuous, ending in wing margin, away from the end of vein R4+5 by distance shorter than length of crossvein r-m. Bend of M sinuous, angle roundedly perpendicular to obtuse, without a spur vein or fold in the membrane as a continuation, much closer to wing margin than crossvein dm-cu, latter convex or bowed outward in the middle, the latter joining M about half the distance from crossvein r-m to bend of M. Vein CuA1 with distal section very short, ending before wing margin, about 0.14 times the length of the preceding section. Vein A1 not reaching wing margin. Calypters uniformly yellow, with yellow pubescence throughout and fringe. Halteres uniformly yellow.
Abdominal dorsum and venter subshining reddish yellow with black spots and bands. Tergite 1+2 with only a marginal, black, dash-like spot on the median fifth. Tergite 3 with black posterior band about a ninth of the tergite's length thick, continuing to the sides, not reaching venter, and expanding into a median black triangle that extends up to less than half of the tergal length, triangle about as wide as median spot on tergite 1+2. Tergite 4 with black posterior band about a fifth of the tergite's length thick, continuing to the sides, only narrowly reaching venter, and expanding into a median black triangle that extends up to half of the tergal length, triangle about as wide as base of median triangle on tergite 3, triangle more truncate than that of tergite 3. Tergite 5 trifasciate, with 3 long black spots or stripes equally spaced. Tergite 1+2 without setae, only recumbent black setulae, with median depression narrow, restricted to anterior half to two thirds of segment. Tergite 3 without discal setae, with 1 pair of median marginal setae, 3 pairs of short lateral setae. Tergite 4 without discal setae, with several marginal setae extending to sides, median pair slightly displaced forward. Tergite 5 truncate, round apically, with transverse discal row of 13 setae extending to ventral margins of tergite. All sternites hidden, ventral margins of tergites overlapping. Ovipositor not modified into a sickle.

I have been wanting to find these flies for a while. Contrary to what the key on the Manual of Nearctic Diptera suggests, vein M does not meet vein R4+5 well before the wing margin in this specimen and probably the whole genus. This specimen keys to couplet 319. The vibrissa are very poorly differentiated but the postgenal margin forms a distinct genal dilation. The katepisternum has 2 setae and 2 postsutural supra-alar seta similar to genus Eutrixa. Otherwise, this species keys variously to Trigonospila and Euhalidaya. The mid tibia has only an anteroventral seta on the ventral surface, not directly ventral, and interestingly, the frons has a row of proclinate orbital setae extending to nearly the end of the frontal row of setae.
No accessible key to species to Oestrophasia has been made since Wulp in 1890. Oestrophasia sabroskyi was diagnosed by Kovarik & Reitz in 2005. They write females in the subgenus Oestrophasia lack the pointed ovipositor of subgenus Cenosoma. The only species in our area in subgenus Oestrophasia are O. calva and O. clausa. Both sexes of O. clausa have vein R4+5 almost entirely setose to crossvein r-m, and the abdomen is more extensively dark, with dark median vitta that continues past the tergites. O clausa has also not been collected in Florida. Oestrophasia calva has probably not been traditionally described since its original description in 1902 by Coquillett. As a result, there little to expect and disagree with from the description. However, Coquillett's description mentions the vertex being twice as wide as either eye in the female, which is ridiculously wide. This should be an error as most tachinid flies don't have such widely separated vertices. In addition, the "first segment" of the abdomen (tergite 1+2) is written as having marginal setae, which are lacking in this specimen. Both sexes of O. sabroskyi are described as also lacking setae on tergite 1+2. Looking at BugGuide photos, the development of these setae might vary intraspecifically, but are never well-developed.
A systematic analysis of the tribe Dufouriini by de Santis & Nihei was made in 2022 which included O. calva. The species was not fully redescribed but an extensive character matrix was created. This specimen matches nearly all characters, except for the yellow postnotum (this may be sexually dimorphic) and only 2 anterodorsal setae on the female mid femur instead of the 3 suggested. BugGuide images of this species also show less than 3 setae present on this surface of the mid femora.

Photos / Sounds

Observer

gerrit_oehm

Date

March 28, 2022 12:31 PM CEST

Photos / Sounds

Observer

faluke

Date

February 26, 2022 08:10 PM CET

Photos / Sounds

What

Horse and Deer Flies (Family Tabanidae)

Observer

seemamerchant

Date

March 27, 2022 09:09 PM IST

Photos / Sounds

Observer

thijsvalkenburg

Date

March 13, 2022 04:17 PM GMT

Photos / Sounds

What

Bristle Flies (Family Tachinidae)

Observer

surfinbird

Date

March 19, 2022 02:44 PM SAST

Photos / Sounds

Observer

david_cabanillas

Date

March 27, 2021 01:36 PM CET

Tags

Photos / Sounds

What

Long-tongue Horse Flies (Subfamily Pangoniinae)

Observer

isaiasmorataya

Date

June 26, 2018 01:50 PM CDT

Photos / Sounds

What

Cutworm Flies (Genus Gonia)

Observer

phacelia15

Date

March 4, 2022 01:27 PM CST

Photos / Sounds

Observer

giovannifontana

Date

March 5, 2022 01:41 PM CET

Photos / Sounds

Observer

rui_andrade

Date

September 8, 2008

Photos / Sounds

Observer

zeferreira

Date

May 26, 2020 11:50 AM BST

Photos / Sounds

Observer

marcello

Date

June 25, 2017 01:57 PM CEST

Description

Bithia modesta/demotica ♀

Photos / Sounds

What

Horse and Deer Flies (Family Tabanidae)

Date

September 25, 2020 07:15 AM -03

Description

Enorme mosca encontrada em residência. Apresentava movimentos lentos e não voou durante o manuseio

Photos / Sounds

What

Glossy Horsefly (Tabanus insignis)

Observer

konkoit

Date

February 13, 2022 05:03 PM SAST

Place

Mtunzini (Google, OSM)

Photos / Sounds

What

Horse and Deer Flies (Family Tabanidae)

Observer

reiner

Date

February 5, 2022 01:50 PM AEDT

Photos / Sounds

What

Bristle Flies (Family Tachinidae)

Date

August 24, 2018 11:24 AM +03

Photos / Sounds

What

Schizophoran Flies (Zoosection Schizophora)

Observer

joachim

Date

October 7, 2020 07:22 PM CEST

Photos / Sounds

Observer

cecileroux

Date

January 29, 2022 10:26 AM SAST

Photos / Sounds

Observer

trevorpescott

Date

January 30, 2022 01:30 PM AEDT

Photos / Sounds

What

Glossy Horsefly (Tabanus insignis)

Observer

konkoit

Date

January 27, 2022 05:12 PM SAST

Place

Mtunzini (Google, OSM)

Photos / Sounds

Observer

aworsey

Date

June 22, 2020 09:17 AM UTC

Photos / Sounds

What

Pale Giant Horse Fly (Tabanus bovinus)

Observer

john_hepburn

Date

June 19, 2020

Place

Devon, UK (Google, OSM)

Photos / Sounds

What

Pale Giant Horse Fly (Tabanus bovinus)

Observer

archaeo-em

Date

July 2, 2021 07:53 PM CEST

Photos / Sounds

Observer

botswanabugs

Date

January 25, 2022

Description

On sedge sp Serowe dam, https://www.inaturalist.org/observations/105650767 No water currently but a lot of vegetation.

Photos / Sounds

Observer

c_hutton

Date

December 22, 2020 09:54 AM EST

Photos / Sounds

Observer

c_hutton

Date

December 22, 2020 09:54 AM EST

Photos / Sounds

Observer

suecee

Date

January 26, 2022 04:19 PM +11

Photos / Sounds

Observer

xespok

Date

September 19, 2021 11:23 AM CEST

Photos / Sounds

Observer

bottin

Date

July 14, 2021 03:17 PM CEST

Photos / Sounds

Observer

bottin

Date

July 14, 2021 03:46 PM CEST

Photos / Sounds

What

True Horse Flies (Genus Tabanus)

Observer

al_losk-lifebra

Date

June 24, 2008 01:35 PM UTC

Photos / Sounds

Observer

lucaskaminski

Date

February 20, 2012 05:23 PM -02

Photos / Sounds

Observer

phillipchp

Date

July 22, 2020 12:41 PM CST

Photos / Sounds

Observer

sara_atailia

Date

April 11, 2021 11:19 PM CEST

Photos / Sounds

What

Bristle Flies (Family Tachinidae)

Observer

substanz

Date

October 2019

Photos / Sounds

What

Bristle Flies (Family Tachinidae)

Observer

tonyrebelo

Date

November 7, 2021 11:40 AM SAST

Photos / Sounds

What

Glossy Horsefly (Tabanus insignis)

Observer

evansolomon

Date

January 15, 2022 12:57 PM CAT

Photos / Sounds

What

True Horse Flies (Genus Tabanus)

Observer

lemoncul

Date

December 24, 2021 12:15 PM SAST

Photos / Sounds

Observer

aacocucci

Date

January 16, 2022 04:46 PM -03

Photos / Sounds

Observer

sethmusker

Date

November 4, 2017 11:01 AM CET

Photos / Sounds

Observer

esant

Date

August 29, 2021 11:14 AM HST

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