Hemerodromia

Meigen, 1822

dance flies

Species Guides

Hemerodromia superstitiosa

Hemerodromia is a of dance flies ( Empididae) comprising at least 170 described . Species are primarily associated with lotic freshwater , particularly streams and rivers. Several species show obligate associations with calcareous water systems and tufa formations in limestone karst regions. The genus exhibits high diversity in tropical Southeast Asia, with significant undescribed species richness anticipated.

Hemerodromia superstitiosa by (c) Zachary Dankowicz, some rights reserved (CC BY), uploaded by Zachary Dankowicz. Used under a CC-BY license.

Hemerodromia by (c) Zachary Dankowicz, some rights reserved (CC BY), uploaded by Zachary Dankowicz. Used under a CC-BY license.

Hemerodromia by (c) Katja Schulz, some rights reserved (CC BY), uploaded by Katja Schulz. Used under a CC-BY license.

Pronunciation

How to pronounce Hemerodromia: //ˌhɛmɛrəˈdroʊmiə//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Identification to level requires examination of genitalic structures and other fine morphological characters; using the mitochondrial COI region has been validated for species-level identification in Thai species with 100% agreement to morphological determinations. The is distinguished within Empididae by placement in Hemerodromiinae, tribe Hemerodromiini.

Images

Habitat

Lotic freshwater including streams and rivers. Several have obligate associations with calcareous streams, rivers, and tufa formations in limestone karst landforms. Three lowland Thai species are specifically linked to alkaline, mineralised water courses with tufa deposition.

Distribution

Widespread across multiple biogeographic regions with records from: Thailand (high diversity, 25+ ), China, Vietnam, Brazil (Cerrado and Atlantic Forest), Colombia (Antioquia, Cundinamarca), Denmark, Norway, and Sweden. Montane species in Southeast Asia show distributions extending between the Himalayas and southeast China.

Host Associations

Simuliidae - association stages have been found in pupal cocoons of blackflies (Simuliidae); this association has been recorded from the Brazilian Cerrado and Atlantic Forest

Life Cycle

stages develop in association with blackfly (Simuliidae) pupal cocoons; complete larval and pupal development details remain undocumented for most .

Behavior

are inefficiently captured by passive trapping methods (, interception traps, pan traps); hand collecting is approximately 2,000 times more efficient for obtaining specimens and 775 times more effective for discovery.

Ecological Role

Important components of lotic freshwater . Tufa-linked indicate a potentially diverse and previously underrecognised for aquatic Empididae in Southeast Asia. Some may persist in stable tufa spring systems, potentially representing relict marooned by historical hydrological fragmentation.

More Details

Taxonomic diversity

Thailand alone harbors at least 25 , with 20 described as new in a 2015 revision, suggesting extremely rich undiscovered fauna across tropical Southeast Asia.

Sampling methodology

The extreme inefficiency of passive trapping methods for this necessitates targeted hand collecting in appropriate aquatic microhabitats for biodiversity assessments.