D I S C O V E R   L I F E   
  HomeIDnature guidesGlobal mapperSearchHelp  
   

Andrena sperryi Cockerell, 1937
Diandrena sperryi Cockerell, 1937

Life   Insecta   Hymenoptera   Apoidea   Andrenidae   Andrena
Subgenus: Diandrena




Click on map to enlarge and for details.
IDnature guides
Overview
Reprinted by permission of the Regents of the University of California from: Thorp, R. W. 1969. Systematics and ecology of bees of the subgenus Diandrena (Hymenoptera: Andrenidae). University of California Publications in Entomology 52: 1-146.

Please report text errors to: Leah at Discoverlife dot org.

This species is most closely related to A. lewisorum and is distinguished from that species by the more widely separated punctures of the mesoscutum and metasomal tergum 2 and by the smaller size.

FEMALE. Integument olive-green; antenna uniformly dark brownish-black, clypeus almost entirely dark, with violaceous reflections except narrow basal border, forewing with stigma yellow, brown; pubescence pale, white except brownish on antennal scape and inner orbits, rust-brown on anal fimbria; facial fovea with sheen gray-black, tomentum white. Head shiny, densely punctate; clypeus, latero- and supraclypeal areas closely, coarsely punctate with shiny, smooth interspaces, punctures separated by less than one diameter, nearly contiguous on latero- and supraclypeal areas; facial fovea extending from summit of eye to lower edge of antennal base; eyes essentially parallel along inner margins; antennae with segments 1 to 3 of flagellum as 9:4:4; labrum with process bifid (fig. 11); subgenal coronet short with 3 to 4 spines visible posteriorly; gena moderately densely, coarsely punctate with shiny, smooth interspaces, punctures separated by about one diameter or less; pubescence of clypeus short, sparse, suberect. Mesosoma shiny, coarsely, closely punctate with shiny, smooth interspaces; pronotum tessellate-punctate, dorsolateral angle obtuse, not elevated, with lateral fold; mesoscutum with notaulus moderately distinct; mesoscutum, scutellum and metanotum with punctures separated by less than one diameter, interspaces smooth, shiny; propodeum moderately shiny, rugose-punctate, enclosure irregularly rugose with faint median basal longitudinal carina; episternum 2 dull, coarsely, closely tessellate-punctate; wing pale, submarginals 1: 2 (28: 28), stigma : rest of marginal cell (25: 36), hind wing with jugal lobe broad and with incision between it and vannal, reaching beyond level of cu-v; posterior trochanter with long, curved, white, perfect floccus; tibial scopa moderately long, loose, simple except for narrow band of plumose hairs along posterior surface, posterior hairs of scopa about one and one-half times as long as width of tibia at apex; pubescence of mesoscutum of two lengths, with many short and few long hairs interspersed. Metasoma shiny, coarsely, densely punctate, with smooth, shiny interspaces; tergum 1 with punctures usually separated by 1 to 2 diameters, occasionally up to 4 diameters; punctures of terga 2 to 5 separated by one diameter or less; terga 1 to 5 with complete hair bands on apical depressed margins. Length 6.5 to 7 mm, forewing 5 mm.

MALE. Integument olive-green; antenna uniformly dark brownish-black, clypeus except for narrow basal border, dark with violaceous reflections, forewing with stigma yellow-brown; pubescence pale, white except for yellow-brown anal fimbria. Head shiny, densely punctate; clypeus, latero- and supraclypeal areas coarsely, closely punctate with shiny interspaces, clypeus with punctures separated by less than one diameter, latero- and supraclypeal areas with punctures nearly contiguous; parocular depression short, linear; eyes essentially parallel along inner margins; antenna with segments 1 to 3 of flagellum as 7:4:7; labrum with process bifid (fig. 12); mandibles moderately long, decussate; gena dorsally moderately closely, coarsely punctate with shiny, smooth interspaces, punctures separated by about one diameter, gena ventrally with punctures more sparse and finely tessellate, shiny interspaces; pubescence of clypeus moderately long, dense, subdepressed. Mesosoma coarsely, closely punctate with shiny, smooth interspaces; pronotum punctate-punctate, dorsolateral angle obtuse, not elevated, with small lateral fold; mesoscutum with punctures separated by about one diameter, notaulus moderately distinct; scutellum and metanotum with punctures separated by less than one diameter, metanotum with tessellate interspaces; propodeum moderately shiny, rugose-punctate, enclosure irregularly rugose with longitudinal median carina; episternum 2 dull, coarsely, closely punctate with tessellate interspaces; wing pale, submarginals 1: 2 (22.5:24.5), stigma : rest of marginal cell (23:31), hind wing with jugal lobe broad and with incision between it and vannal, reaching beyond level of cu-v, pubescence of mesoscutum long, pale. Metasoma shiny, coarsely, densely punctate, with smooth, shiny interspaces; tergum 1 with punctures usually separated by 1 to 2 diameters, occasionally up to 4 diameters; punctures of terga 2 to 5 separated by one diameter or less; sternum 8 (fig. 72); terga 1 to 5 with complete hair bands on apical depressed margins. Length 5.5 to 6 mm, forewing 4 to 4.5 mm.

Names
Scientific source:
Hosts · map
FamilyScientific name @ source (records)
Asteraceae  Malacothrix sp @ BBSL (2)
Onagraceae  Camissonia sp @ BBSL (1)

Top
Updated: 2024-10-10 15:12:40 gmt
© Designed by The Polistes Corporation