For sorting difficult or impossible to identify Toxomerus observations into groups smaller than genus for ease of comparison. (holding bin)

Datatype: text
Allowed values:
T. cf. duplicatus 391
T. croesus/pictus 30
T. dispar/floralis 94
T. lacrymosus/musicus 72
T. cf. aquilinus 4
Unidentified Florida species 9
Created by: upupa-epops upupa-epops
Values:

Observations specifying this field

Observation Toxomerus identifiable group

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

seaandstars5

Date

August 15, 2019 09:32 AM EDT
T. dispar/floralis

Photos / Sounds

What

Calligrapher Flies Genus Toxomerus

Observer

arctic_mongoose

Date

August 19, 2019 07:00 PM EDT
T. dispar/floralis

Photos / Sounds

What

Calligrapher Flies Genus Toxomerus

Observer

jbar82

Date

August 19, 2019 05:11 PM -03
T. cf. duplicatus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Date

August 16, 2019 08:17 AM EDT
T. cf. duplicatus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

pacof

Date

November 5, 2014

Description

En Paco´s Nature Reserve

T. cf. duplicatus

Photos / Sounds

What

Calligrapher Flies Genus Toxomerus

Observer

francisco3_tutor

Date

September 19, 2016 11:30 AM HST
T. dispar/floralis

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

kami_db

Date

May 30, 2019 06:12 AM -05
T. cf. duplicatus
T. lacrymosus/musicus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Date

August 2, 2019
T. lacrymosus/musicus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

mgiddings

Date

July 24, 2019 12:36 PM CDT
Unidentified Florida species

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Date

July 15, 2019

Description

Visitando Raphanus sp.

T. cf. duplicatus

Photos / Sounds

What

Calligrapher Flies Genus Toxomerus

Date

July 15, 2019

Description

Visitando Oxalis corniculata

T. cf. duplicatus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

mgiddings

Date

July 23, 2019 08:23 AM CDT

Description

Host plant IDed as Hypericum crux-andreae via @jayhorn

Unidentified Florida species

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

trekman

Date

March 9, 2016
T. cf. duplicatus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

lisnel

Date

July 21, 2019 12:13 PM EDT
T. dispar/floralis

Photos / Sounds

What

Calligrapher Flies Genus Toxomerus

Observer

joemdo

Date

July 19, 2019 12:36 PM EDT
T. dispar/floralis

Photos / Sounds

What

Calligrapher Flies Genus Toxomerus

Observer

arctic_mongoose

Date

July 14, 2019 06:00 PM EDT
T. dispar/floralis

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

lacrespa

Date

July 6, 2019 02:32 PM -05
T. cf. duplicatus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

bryan238

Date

June 14, 2019 12:57 PM -05

Description

Diptera

T. cf. duplicatus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

bryan238

Date

May 10, 2019 04:19 PM -05

Description

Diptera

T. cf. duplicatus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

arctic_mongoose

Date

July 10, 2019 06:41 AM EDT
T. dispar/floralis

Photos / Sounds

What

Calligrapher Flies Genus Toxomerus

Observer

arctic_mongoose

Date

July 12, 2019 12:54 PM EDT
T. dispar/floralis

Photos / Sounds

Square

Observer

lisnel

Date

July 6, 2019 02:19 PM EDT
T. dispar/floralis

Photos / Sounds

Square

Observer

lisnel

Date

July 9, 2019 04:43 PM EDT
T. dispar/floralis

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

arctic_mongoose

Date

July 10, 2019 06:40 AM EDT
T. dispar/floralis

Photos / Sounds

Square

Observer

lisnel

Date

July 9, 2019 04:47 PM EDT
T. dispar/floralis

Photos / Sounds

Square

Observer

lisnel

Date

July 9, 2019 04:56 PM EDT
T. dispar/floralis

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Date

June 23, 2019
T. cf. duplicatus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

tainah

Date

July 5, 2019 01:57 PM UTC
T. lacrymosus/musicus

Photos / Sounds

Square

What

Calligrapher Flies Genus Toxomerus

Observer

carlosarturo2

Date

July 4, 2019 03:20 PM -05
T. cf. duplicatus
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Comments

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T. duplicatus group
This group contains all the Toxomerus with simple patterns of horizontal bars on the abdomen and usually a pair of commas on each abdomen section. Common species in this group are likely T. duplicatus and T. watsoni, however there are many other species with a similar pattern.

"Many species of Toxomerus present the same abdomen color pattern as Toxomerus duplicatus and the morphology of the male and female genitalia ... helps their segregation." - Borges & Couri 2009, pg. 32

Note that in some locations, such as Florida, observations may be identifiable to species by range.
---
Possible list of species that resemble this:

T. brevifacies
T. buscki
T. corbis/planiventris?
T. difficilis
T. duplicatus
T. ecuadoreus
T. idalius
T. minutus?
T. norma
T. papaveroi
T. paraduplicatus
T. pinchinchae
T. productus
T. puellus
T. steatogaster
T. taenius
T. watsoni

(draft, please let me know of any more or of any way to identify particular species)

Posted by upupa-epops about 1 year ago (Flag)
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T. lacrymosus/musicus
"Toxomerus lacrymosus is very similar to Toxomerus musicus with a few morphological differences. The characters to distinguish them are the microtrichia distribution on wing, the genitalia morphology and numbers of spermathecae on the female." - Borges & Couri 2009, pg. 39

Posted by upupa-epops about 1 year ago (Flag)
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T. floralis/dispar
These two species are both very variable and also widely ranging and share a range in many areas in Central and South America, as well as Florida. See Thompson 1981 (Flower Flies of the West Indies) for the most details about this pair.

Posted by upupa-epops 12 months ago (Flag)
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T. croesus/pictus
Information from Borges & Couri 2009, Revision of Toxomerus from Brazil.
T. croesus: "Geographical record. Southeastern to southern Brazil."
T. pictus: Synonymized with T. jaguarinus, maculatus, and extrapolatus.
"Geographical record. Widespread, from Mexico to southern South America."

I don't think I have seen abdomen diagrams looking similar to this that are labelled anything other than those species. I'm not sure how to separate T. croesus and T. pictus, but based on the range description it sounds like T. croesus might be restricted to southern Brazil.

Posted by upupa-epops 9 months ago (Flag)
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https://www.inaturalist.org/observations/6744479

T. cf. aquilinus "group"
A group of 4 very similar species from South America.

"Toxomerus aquilinus, intermedius, teliger and tibicen have been frequently confused given the identifications we have seen in collections. All these species appear similar. Of the four, aquilinus is readily distinguished by the black subapical fasciae on the 3rd and 4th terga being nearly straight so that the lateral margin on the basal 1/2 is pale (Fig. 4). The other species have the black fasciae extending anterolaterally so that the lateral margin is black along most of its length (Figs 2, 8)." - Metz & Thompson, pg. 234

"Toxomerus intermedius and teliger are sister species. They share a unique shape and setal pattern of the paramere, which is not found elsewhere among Toxomerus species. They differ mainly in wing microtrichia (alula bare in teliger, microtrichose in intermedius) and male genitalia (dorsal arm of paramere with 4 long setae in teliger, two in intermedius), Toxomerus intermedius has been rarely collected, being known only from six collections." - Metz & Thompson, pg. 238

"Toxomerus teliger looks like aquilinus, but is separated from all other large species by its bare alula" - pg. 247

"Toxomerus tibicen is similar to aquilinus, intermedius and teliger in appearance but as discussed under those species it can be readily distinguished by its abdominal pattern and microtrichose alula" - pg. 249

Posted by upupa-epops 9 months ago (Flag)
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If you're interested in looking into Toxomerus further:
- Guide thing https://www.inaturalist.org/journal/upupa-epops/14985-identifying-toxomerus-hoverflies
- Neotropical Toxomerus project https://www.inaturalist.org/projects/neotropical-toxomerus
- Toxomerus in Florida project https://www.inaturalist.org/projects/toxomerus-in-florida
- Best species photos of each species, and how often each are observed https://www.inaturalist.org/observations?place_id=any&subview=grid&taxon_id=58753&view=species

Posted by upupa-epops 9 months ago (Flag)

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