D I S C O V E R    L I F E   
Bee Hunt! Odonata Lepidoptera 
  HomeAll Living ThingsIDnature guidesGlobal mapperAlbumsLabelsSearch
  AboutNewsEventsResearchEducationProjectsStudy sitesHelp


Andrena malacothricidis Thorp, 1969
Life   Insecta   Hymenoptera   Apoidea   Andrenidae   Andrena
Subgenus: Diandrena

Andrena malacothricidis
Hartmut Wisch · 1
Andrena malacothricidis

Click on map for details about points.

Links
80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2
Set display option above.
Click on images to enlarge.
Andrena malacothricidis, top
Hartmut Wisch · 1
Andrena malacothricidis, top
Andrena malacothricidis
Hartmut Wisch · 1
Andrena malacothricidis
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. subchalybea and may be distinguished from that species by its shiny mesoscutum, deeply emarginate apex of the labral process, and entirely pale facial pubescence.

FEMALE. Integument golden-green; antenna above dark brownish-black, apical 8 to 9 flagellar segments below yellow-brown, forewing with stigma yellow-brown, clypeus with large triangular dark area with violaceous reflections covering all but narrow basolateral area; pubescence pale, white except anal fimbria golden, basoposterior surface of tibial scopa golden brown; facial fovea with gray sheen, tomentum white. Head moderately shiny, coarsely, closely punctate with tessellate interspaces; clypeus with punctures separated by less than one diameter, latero- and supraclypeal areas with punctures contiguous; facial fovea extending from summit of eye to middle of antennal base; eye slightly arcuate medially; antenna with segments 1 to 3 of flagellum as 11:4:4; labrum with process deeply emarginate apically (fig. 47); subgenal coronet moderately long, well developed; gena moderately shiny, moderately coarsely punctate with tessellate interspaces, longitudinally finely striate, punctures separated by one diameter; pubescence of clypeus moderately long, sparse, subdepressed. Mesosoma shiny, closely, coarsely punctate with tessellate interspaces; pronotum with punctures separated by 1 to 2 diameters, interspaces transversely tessellate, dorsolateral angle absent, without lateral fold; mesoscutum with punctures separated by one diameter, notaulus short, distinct; scutellum with punctures separated by less than one diameter; metanotum rugose-punctate with punctures separated by one diameter; propodeum with enclosure basally with short, sparse, longitudinal rugulae, irregularly rugulose centrally, rugulae becoming finer laterally, transversely tessellate apically; episternum 2 closely, coarsely punctate with tessellate interspaces, punctures separated by one diameter or less and with dorsal edges raised; wing pale, submarginals 1:2 (28:33), stigma : rest of marginal cell (12.5:20.5), hind wing with jugal lobe narrow and without incision between it and vannal, reaching beyond level of cu-v; posterior trochanter with long, curved, white, perfect floccus; tibial scopa long; moderately dense with branched hairs, posterior hairs of scopa one and three-fourths times as long as width of tibia at apex; pubescence of mesoscutum sparse, with few long and numerous moderately short white hairs. Metasoma moderately shiny on basal elevations of terga with depressed apical margins shiny; moderately finely, sparsely punctate; first tergum with punctures moderately coarse, separated by 2 diameters or slightly less; terga 2 to 4 with punctures finer, separated by less than 2 diameters on basal elevations; pubescence moderately long erect on tergum 1, short suberect on terga 2 to 4, depressed on apical margins of terga 1 to 3 with spatulate hairs laterally forming weak, medially interrupted hair bands, hair band nearly complete on tergum 4. Length 7 to 8.5 mm, forewing 5.5 to 6 mm.

MALE. Integument, golden-green; antenna uniformly dark brownish-black, forewing with stigma dark brownish-black, clypeus with narrow, transverse, subapical dark band with violaceous reflections; pubescence pale, while except anal fimbria golden, laterally on face, above and behind eye black. Head moderately shiny, closely, coarsely punctilio with tessellate interspaces; clypeus, latero- and supraclypeal arena with punctures contiguous; parocular depression short, oval; eyes slightly convergent below; antenna with segments 1 to 3 of flagellum as 10:5:6; labrum with process deeply emarginate apically (fig. 48); mandibles short; gena moderately finely, sparsely punctate with tessellate interspaces, longitudinally, finely striate, punctures separated by 2 diameters; pubescence of clypeus long, dense, subdepressed. Mesosoma moderately shiny, coarsely, shallowly punctate with granular interspaces; pronotum with punctures separated by 1 to 2 diameters, interspaces transversely tessellate, dorsolateral angle absent, without lateral fold; mesoscutum with punctures separated by less than to slightly more than one diameter, notaulus short, distinct; scutellum and metanotum with punctures separated by one diameter or less; propodeum rugose-punctate with punctures separated by one diameter or more, enclosure with inner triangle longitudinally rugose basally, irregularly rugose apically, outer margins finely irregularly rugulose; episternum 2 coarsely punctate with dorsal rims of punctures produced, punctures separated by less than one diameter; wing pale, submarginals 1: 2 (28.5: 20), stigma : rest of marginal cell (12: 20), hind wing with jugal lobe narrow, without incision between it and vannal, reaching beyond level of cu-v; pubescence long, sparse. Metasoma moderately dull, moderately finely, sparsely punctate with scale-like interspaces, punctures somewhat indistinct, separated by about 2 diameters on terga 1 to 5; pubescence of basal elevations of terga 1 and 2 long, erect, of terga 3 to 5 moderately long, suberect, apicolateral hairs spatulate, subdepressed, forming weakly defined, medially interrupted hair bands on terga 1 to 3, terga 4 and 5 with hair bands complete. Length 6 to 7 mm, forewing 5 to 6 mm.

Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Asteraceae  Malacothrix glabrata @ BBSL (1)

Malacothrix sp @ BBSL (1)
Brassicaceae  Descurainia sophia @ BBSL (1)

go to Discover Life's Facebook group

Updated: 2021-05-08 14:22:21 gmt
Discover Life | Top
© Designed by The Polistes Corporation