1. Troutnut Forum
›
2. Get Bugs Identified
›
3. Help what is this

Hi, I know it is a mayfly, but don't know the species, hope you can help me out, it was photographed down here in Mexico.

Looks similar to the genus Tricorythodes (what people call Tricos) or some other member of the family Leptohyphidae. The dark color, three tails and shape & coloration of wings all help me to guess that it is Tricorythodes.

How big was it? What part of Mexico were you in when you saw it?

It is small maybe 1.4 cm I saw it in the central part of mexico, the place is about 2000 mt above the sea level, it was a beautiful shinny black color

Several Tricorythodes species are known from central Mexico.
http://www.entm.purdue.edu/entomology/research/mayfly/species.html

Did you see the river or stream nearby? If so, please describe it. This might help.

Konchu, I was fishing on this small creek, the area where I caught it is where the water is most still avobe a small dam, the creek is only 6ft wide and not very deep, the deepest pools are about 4ft and average depth is 2ft bottom is mostly grtavel with some areas covered with a thin layer of silt, hope this help

Good leptohyphid habitat.

Xavier_Carp-

When you say Central Mexico, are you referring to the country or the state of México? This information would allow me to significantly narrow down the identification possibilities.

Here is a list of the Mexican states:

SW Southwest Region

• BN Baja California
  
• BS Baja California Sur
  
• CA Coahuila
  
• CH Chihuahua
  
• DU Durango (all but southern tip)
  
• NL Nuevo León
  
• SI Sinaloa (all but southern third)
  
• SL San Luis Potosí (northern tip)
  
• SO Sonora
  
• TM Tamaulipas (all but southern third)
  
• ZA Zacatecas (all but southern tip)
  
• FS Far South Region
  
• AG Aguascalientes
  
• CL Colima
  
• CM Campeche
  
• CP Chiapas
  
• DF Distrito Federal
  
• DU Durango (southern tip)
  
• GJ Guanajuato
  
• GR Guerrero
  
• HI Hidalgo
  
• JA Jalisco
  
• MC Michoacán
  
• MR Morelos
  
• MX México
  
• NA Nayarit
  
• OA Oaxaca
  
• PU Puebla
  
• QE Querétaro
  
• QR Quintana Roo
  
• SI Sinaloa (southern third)
  
• SL San Luis Potosí (all but northern tip)
  
• TB Tabasco
  
• TL Tlaxcala
  
• TM Tamaulipas (southern third)
  
• VE Veracruz
  
• YU Yucatán
  
• ZA Zacatecas (southern tip)

Taxon, it was pictured in Puebla
THX

Hmmmm. Puebla, doesn’t seem have any leptohyphids recorded, at least according to a list compiled from Dr. Pat Randolph’s PhD dissertation. So, I looked at the surrounding states, and found that Oaxaca, immediately south of Puebla, has records of the following leptohyphids:

Leptohyphes alleni
Leptohyphes brunneus
Leptohyphes castaneus
Leptohyphes zalope
Tricorythodes notatus
Vacupernius packeri

It is likely one of these. Perhaps Konchu will be able to narrow it further.

The tails on this beast are too long for Tricorythodes...