Ministrymon janevicroy
Glassberg, 2013
Vicroy's Ministreak, Pebbly Ministreak
Ministrymon janevicroy, commonly known as Vicroy's Ministreak or Pebbly Ministreak, is a small lycaenid discovered in 2013 by Jeffrey Glassberg. The remained unrecognized in museum collections for over a century due to its close resemblance to the Gray Ministreak (Ministrymon azia). It is distinguished by its distinctive olive-green , a unique feature among North butterflies. The species occurs from southern Texas through Central America to Rica, with on Caribbean islands.
Pronunciation
How to pronounce Ministrymon janevicroy: /ˈmɪnɪstriˌmɒn ˈdʒænevɪˌkrɔɪ/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from the Gray Ministreak (Ministrymon azia) by olive-green versus dark /black eyes. patterns and internal structures also differ, though these require closer examination. Both are similar in size and may occur sympatrically. Dissection or detailed wing pattern analysis may be necessary for definitive identification when eye color cannot be assessed.
Appearance
A diminutive approximately the size of a thumbnail. length is 9.1 mm in both sexes. Most notable feature is the olive-green coloration of the . patterns differ from the similar Gray Ministreak, though specific pattern details are not fully documented in available sources. Internal structures also differ from related .
Habitat
Dry deciduous forests and scrub vegetation. requirements differ from but overlap with those of the Gray Ministreak.
Distribution
Southern United States (Texas) south through Central America to Rica (Guanacaste Province). occur on the Venezuelan islands of Curaçao and Isla Margarita.
Seasonality
have been recorded on from January to August in Texas. in other parts of the range is not well documented.
Diet
possibly feed on Mimosa and Leucaena (Fabaceae). This association is considered tentative and requires confirmation.
Host Associations
- Mimosa - probable larval tentative, requires confirmation
- Leucaena - probable larval tentative, requires confirmation
Human Relevance
Named in honor of Jane Vicroy Scott, wife of the discoverer Jeffrey Glassberg. Represents a notable case of a 'cryptic' discovered through re-examination of museum specimens combined with field observation. The discovery has been cited as potentially the last truly distinctive species to be discovered in the United States, marking the end of an era of butterfly discovery in North America that began with .
Similar Taxa
- Ministrymon aziaGray Ministreak is extremely similar in appearance and size; distinguished primarily by color (dark /black vs. olive-green) and subtle pattern differences; historically confused with M. janevicroy in collections
- Ministrymon ledaLeda Ministreak is another congeneric with similar size and preferences; occurs in overlapping range (Arizona, Texas)
Misconceptions
Specimens were deposited in the Smithsonian collections for over a century but remained unrecognized as a distinct due to confusion with the Gray Ministreak. This illustrates how cryptic species can persist undetected even in well-curated museum collections.
More Details
Discovery and naming
Discovered by Jeffrey Glassberg, President of the North Association, and formally described with Bob Robbins (Smithsonian Institution) in ZooKeys in 2013. The specific epithet honors Jane Vicroy Scott.
Taxonomic significance
The discovery has been highlighted as emblematic of the declining era of discovery in the United States, while noting that hundreds of species likely remain undiscovered in tropical America.