Genus - Laphria

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum


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5 results for "Laphria"

Laphria gilva

University of Alberta E.H. Strickland Entomological Museum

SeasonalityAdults are found late July to late August and possibly earlier and later in the southern portion of the range (Schmid 1969). IdentificationMedium to large, 15-20 mm in length. Robust flies with a general black appearance as compared to other Laphria spp. Body is mostly black, with the posterior, dorsal end of the abdomen being orange, finely pubescent (covered by hairs), and slender. Legs are black and raptorial. Laphria gilva can be distinguished by abdominal segments three, four, and five being covered dorsally with orange pubescence, and segment six being black (L. gilva can be confused with L. aimatis (McAtee), but is easily distinguished by this black sixth abdominal segment). Thoracic and leg pubescence is sparse and rather inconspicuous, and the setae of the mask and mystax (setae surrounding the pronounced hypopharynx) are uniformly black, and of medium length compared to other Laphria spp. Superior forceps of the male genitalia are each provided with two lamellar appendages (McAtee 1919; Adisoemarto 1967).

Laphria index

University of Alberta E.H. Strickland Entomological Museum

SeasonalityAdults are found June through mid August, and possibly earlier in the southern portion of the range. IdentificationMedium sized, 15 mm in length. Laphria index is a generally slender fly compared to other Laphria spp. Thorax and abdomen are covered in fine orange hair (pubescence), and legs are brown to red. Coloration of the abdominal and thoracic piles (clumps of hairs) are similar to L. janus (though less dramatic), with the thoracic pubescence being much more delicate. Legs are covered in fine pubescence, and are long and raptorial, ending in prominent tarsal claws used for subduing prey items and mates. Mystax (dense setae surrounding the hypopharynx) and the surrounding mane are white and rather sparse, and scutellar bristles are yellowish. Metapleural hairs are lightly colored or white. Laphria index can be confused with L. aeatus (Walker), but can be most easily distinguished by the yellow scutellar bristles (McAtee 1919; Adisoemarto 1967).

Laphria janus

University of Alberta E.H. Strickland Entomological Museum

SeasonalityAdults are found late may through July, and possibly earlier in the southern portion of the range. IdentificationMedium to large, 10-20 mm in length. Laphria janus is a conspicuous bee-mimic which is generally robust, with highly-pubescent raptorial legs and an enlarged hypopharynx used in hunting. The hypopharynx of this species is surrounded by coarse white to yellow setae, referred to as a mystax. Antennae are stout and short, and eyes are large and conspicuous. Moderately course hairs (pubescence) are present and cover the posterior ends of the thorax and abdomen; L. janus is easily distinguished from other Laphria by the abdominal piles being orange and thoracic piles being yellowish. Fine pubescence can continue along the whole of the thorax and abdomen. Males have a slender abdomen, while females have a more rounded abdomen. (McAtee 1919; Adisoemarto 1967).

Laphria sadales

University of Alberta E.H. Strickland Entomological Museum

SeasonalityAdults are found June through July, and possibly earlier in the southern portion of the range. IdentificationMedium sized; 8-12 mm in length. Body is black and apparently bare (with no significant pubescence), giving a slender appearance. Abdomen is slender and black, and legs are orange to red, except coxae and tarsi which are black. Legs are mostly bare, and are relatively delicate. Compared to most Laphria, which are bee-mimics and large, robust predators, Laphria sadales is one of the less impressive flies of the genus. Antennae are very small, and the setae of the mystax (hairs surrounding the mouthparts) and surrounding mane are relatively short and inconspicuous compared to other species. The hypopharynx is also small relative to other species in the genus Laphria. Sexual dimorphism is slight, with males having slightly paler abdomens and golden abdominal piles (clumps of hairs; compared to black abdominal piles in females). This species is often confused with L. xanthippe (Williston), but can be distinguished by the entirely black abdomen and red legs (McAtee 1919; Adisoemarto 1967).

Laphria vultur

University of Alberta E.H. Strickland Entomological Museum

SeasonalityAdults have been found from late May to late July. IdentificationMedium-large flies, 20 mm in length. Laphria vultur is robust-looking with a general gold/orange coloration, due to copious amounts of reddish-orange hair (pubescence) covering the entirety of the head, thorax, and abdomen. The pubescence of other species in the genus Laphria is generally less distinct and sparser. Pubescence is most intense on the abdomen and face, with the mystax (hairs surrounding the mouthparts) and mane (surrounding the hypopharynx) slightly lighter in color. Long raptorial legs are covered in moderately thick black and reddish-orange pubescence, with long claws at the end of the tarsi for capturing and subduing prey (McAtee 1919; Adisoemarto 1967)

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum