Hydraenidae, Mulsant, 1844

Wallace, Gregory S., Lanning, Seth W., Mabee, William R., Combes, Matthew D. & Epler, J. H., 2016, New State Records, Habitat Characteristics, and Range Extensions for Three Aquatic Beetles (Coleoptera: Gyrinidae, Hydraenidae) from Wadeable Streams in Missouri, USA, The Coleopterists Bulletin 70 (4), pp. 907-910 : 907-910

Hydraenidae

(minute moss beetles)

Hydraena indiana Jäch. USA, Missouri: Lawrence County; tributary to White Oak Creek (UTM Northing: 409893 and UTM Easting: 4120214); 18 September 2006; near bank margin of riffle habitat: B. Landwer, S. Dunnaway; 4 adults. USA, Missouri: Lawrence County; tributary to Spring River (UTM Northing: 429445 and UTM Easting: 4092390); 19 September 2011; near bank margin of pool habitat: S. Lanning, W. Mabee; 14 adults. Both streams are small, spring-influenced headwaters in the Spring River basin. Hydraena indiana was described from material collected in Indiana and also has been found in Oklahoma ( Jäch 1994). Therefore, although H. indiana is a new state record for Missouri, the occurrence of this species in Missouri is not surprising.

Hydraena punctata LeConte. USA, Missouri: Vernon County; tributary to Landon Branch (UTM Northing: 382384 and UTM Easting: 4178307); 27 March 2008; near bank margin of riffle habitat underneath overhanging native prairie grasses: R. Espeo, W. Mabee; 4 adults. This collection was from a small headwater tributary that probably completely dries annually, but maintains small pools through groundwater seepage. The site is in the Osage River basin in a managed prairie remnant with relatively intact hydrological patterns. Hydraena punctata is primarily known to occur in the northeastern region of the USA ( Perkins 1980), but also has been found as far west as Indiana ( White et al. 1985). Our collection of H. punctata is new for Missouri and extends the known range for this species farther southwest than was previously documented.