Order - Odonata

Taxonomic Hierarchy for Freshwater Invertebrate Collection


Results

56 results for "Odonata"

Ophiogomphus colubrinus

Freshwater Invertebrate Collection

Common NameBoreal Snaketail SeasonalityFlying from early May to late August or early September (Needham et. al., 1955). IdentificationColoration is dominantly green on the head, eyes and thorax, with a black outline around the labrum and facial sutures as well as black lateral stripes on thorax. Eyes do not meet dorsally on the head. The anterior thoracic strip is divided by a narrow green line seen in many other Ophiogomphus species. Legs are entirely black, except for trace green markings on the femora and tibia of females. The abdomen is primarily black with interrupted dorsal and lateral stripes that appear bright yellow and noticeably widen on enlarged segments 7, 8 and 9 and continue on to the caudal appendages of males. Length of the abdomen can vary up to 10mm between individuals. Unlike most other species, male boreal snaketails have small dark coloured horns on their head similar to females; however, females of this species have two pairs of horns, one in front and one behind the eye (Needham et. al. 2000).

Ophiogomphus severus

Freshwater Invertebrate Collection

Common NamePale Snaketail SeasonalityAdults have a flight season occurring from May to September. IdentificationColoration of Ophiogomphus severus is similar to its close relatives, except that O. severus has a larger proportion of black across the entire body. The head and eyes are yellow with a black line across the frons and a black vertex. Eyes do not meet dorsally. Thorax is more greenish yellow than the head and abdomen with a diagnostic dark brown oval on the prothorax. Both the forewings and the hindwings have a yellow costal vein, but dark venation color throughout the rest of the wing. Leg segments show a mottled color pattern, the leg base yellow, the tarsi black and the femur and tibia displaying both colours. Abdomen is primarily yellow and black. Lateral stripes are continuous from the first to the terminal abdominal segment while the dorsal stripe is arranged as a row of large yellow spots ending on the ninth segment. Caudal appendages are also entirely yellow. Males and females of this species look very similar, but can be differentiated by more color on the legs of the female (Needham, et al 2000).

This species is divided into two subspecies: Ophiogomphus severus severus Hagen (described above) and Ophiogomphus severus montanus Selys which is described as having a larger lateral brown spot on the prothoracic segment and more black on segment 10 of the abdomen (Needham, et. al. 2000).

Ophiogomphus sp.

Freshwater Invertebrate Collection

Paltothemis sp.

Freshwater Invertebrate Collection

Progomphus sp.

Freshwater Invertebrate Collection

Somatochlora hudsonica

Freshwater Invertebrate Collection

Somatochlora minor

Freshwater Invertebrate Collection

Somatochlora sp.

Freshwater Invertebrate Collection

Stylurus scudderi

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

Tetragoneuria sp.

Freshwater Invertebrate Collection

Taxonomic Hierarchy for Freshwater Invertebrate Collection