Family - Libellulidae

Taxonomic Hierarchy for Freshwater Invertebrate Collection


Results

11 results for "Libellulidae"

Leucorrhinia hudsonica

Freshwater Invertebrate Collection

Common NameHudsonian Whiteface SeasonalityMay to August. IdentificationThe Hudsonian Whiteface has a length of 27 to 30 mm. Male dragonflies are black and marked with red on the thorax and the abdomen with pointed spots on one end that form a line in the top side of the abdomen. The female is a dark brownish color and marked similarly to the male except the markings are yellow instead of black. Both sexes have creamy white faces. The naiad of the Hudsonian Whiteface has a length of 16 to 18 mm. Its abdomen is rounded, which gives it a short, stocky appearance known as the sprawler form. Naiads are brown with three dark stripes marking the length below the abdomen. In some cases, there are tiny hooks on abdominal segments three through six. Every side of abdominal segments eight and nine has a spine that points out away from the abdomen.

Leucorrhinia intacta

Freshwater Invertebrate Collection

Common NameDot-tailed Whiteface SeasonalitySpring through summer. IdentificationMales have white faces and a single yellow dorsal dot on the 7th segment of the abdomen. The immature has a yellow marking on the thorax. The female has yellow markings on the abdomen with the same prominent, square dorsal spot on the 7th segment, which is often truncated into a trapezoid. The body varies from 1.1 to 1.3 inches in length. Larvae possess conspicuous epi-cranial protuberances on the frons or vertex.

Leucorrhinia proxima

Freshwater Invertebrate Collection

Leucorrhinia sp.

Freshwater Invertebrate Collection

Libellula quadrimaculata

Freshwater Invertebrate Collection

Libellula sp.

Freshwater Invertebrate Collection

Paltothemis sp.

Freshwater Invertebrate Collection

Sympetrum costiferum

Freshwater Invertebrate Collection

Sympetrum danae

Freshwater Invertebrate Collection

Common NameBlack Meadowhawk SeasonalityFlight season is from late June to mid September or October (Hutchings and Halstead 2011). IdentificationApproximately 3 centimeter meadowhawk with black and yellow patterns. Males are almost entirely black with few yellow stripes and have metallic face. Females have reddish-brown eyes with pale green colours. The thorax and abdomen is mostly yellow with black stripes on lateral sides and the costal veins on both wings are yellow. Immature adults are yellow with lighter black or brown patterns on thorax and abdomen, and will gradually turn darker as they become mature (Paulson 2009).

Sympetrum internum

Freshwater Invertebrate Collection

Common NameCherry-faced Meadowhawk SeasonalityFlight season is from June to September or October (Paulson 2009). IdentificationApproximately 3 cm red meadowhawk with reddish face, yellowish wing bases, and black legs. Black stripes are found on the lateral sides of abdomen. Males have red eyes whereas females have brownish red eyes. Immatures have yellowish face and yellowish brown body. Both the face and the body turn red as they reach maturity (Paulson 2009).

Sympetrum sp.

Freshwater Invertebrate Collection

Taxonomic Hierarchy for Freshwater Invertebrate Collection