Biddies

BIDDIES Family Cordulegastridae

Identification: Large brownish to blackish dragonflies with yellowish markings. No brace vein. Ovipositor of 9 conspicuous.

Biddies resemble river skimmers (.Macromia, family Macromi-idae), but have a slightly different wing venation (compare illustrations, pp. 71 and 73). The compound eyes are slightly separated on dorsal side of head or meet at a single point only. A small group, and its members are not common. They occur chiefly along small woodland streams.

brace vein brace vein

Head of Darner Labium of Darner

(dorsal) (ventral)

Apex of abdomen of Darner (Aeshna consfricta)

Wings of Biddie

Head of Clubtail Labium of Grayback

(dorsal) (ventral)

Apex of abdomen of Darner (Aeshna consfricta)

Head of Darner Labium of Darner

(dorsal) (ventral)

Wings of Biddie

Skimmers: Superfamily Libelluloidea

Triangles in FW and HW different in shape, and triangle in FW farther beyond arculus than triangle in HW. Most antenodal cross veins between C and Sc in line with those between Sc and R. No brace vein. Ovipositor lacking.

BELTED and RIVER SKIMMERS Family Macromiidae

Identification: Anal loop of HW rounded, without a bisector, d" with inner margin of HW slightly notched, and a small lobe on each side of 2nd abdominal segment. Wings never with spots or bands.

Belted skimmers (Didymops) are brownish, with light markings on the thorax, and 2^-2% in. They occur along boggy pond shores but are not common. River skimmers (.Macromia) are 23^-3y± in., blackish, with yellow markings on thorax and abdomen, and the eyes in life are bright green; adults are fast fliers and are found along large streams and lakes.

GREEN-EYED SKIMMERS Family Corduliidae Identification.: Anal loop in HW elongate, with a bisector, usually not particularly foot-shaped. & with inner margin of HW slightly notched, and a small lobe on each side of 2nd abdominal segment. Hind margin of compound eyes slightly lobed.

Corduliids are usually blackish or metallic, and seldom have conspicuous light markings. The eyes in life are bright green. Most species have the wings entirely clear or with only a small dark spot at the base, and are lJ^-2% in. Members of the genus Epicordulia have a dark spot at base, middle, and tip of each wing, and are 2}in. Corduliids generally occur about swamps and ponds; only a few are found along streams.

COMMON SKIMMERS Family Libellulidae See also PI. 1 Identification: Anal loop in HW elongate, with a bisector, and usually foot-shaped. Inner margin of HW rounded in both sexes. <? without lateral lobes on 2nd abdominal segment. Hind margin of compound eyes straight or only very slightly lobed. Wing color variable.

This is a large group and many species are very common. They occur chiefly about ponds and swamps; most dragonflies one sees in such places belong to this family. The majority are 1-2J^ in. (a few may be somewhat larger), and the wingspread is noticeably greater than the body length. Many are brightly colored, often with spots or bands on the wings; some have the sexes differently colored. Their flight is fast, sometimes interrupted by periods of hovering.

antenodal cross veins nodus arculus

anal loop

Wings of Common Skimmer (Sympetrum)

Head of Common Skimmer

Head of Green-eyed Skimmer

Wings of Green-eyed Skimmer

Wings of Belted Skimmer arculus anal loop

Wings of Common Skimmer (Sympetrum)

antenodal cross veins nodus

Head of Common Skimmer

Head of Green-eyed Skimmer

Wings of Green-eyed Skimmer

Wings of Belted Skimmer

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