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Melissodes clarkiae LaBerge, 1961
Life   Insecta   Hymenoptera   Apoidea   Apidae   Melissodes
Subgenus: Callimelissodes


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Identification
Extracted from: LaBerge, W. E., 1961. A Revision of the Bees of the Genus Melissodes in North and Central America. Part III (Hymenoptera, Apidae). The University of Kansas Science Bulletin, Vol. 43. 1-107.

This distinctive bee is clearly related to the foregoing three species (lupina, plumosa and metenua), but probably most closely to plumosa. The females are as pale in color as plumosa, but are readily distinguished from all species of the subgenus Callimelis- sodes by the weakly branched scopal hairs. The males are easily confused with those of either metenua or plumosa. The males of clarkiae are distinguished from those of lupina by the longitudinal, dorsolateral depressions of the flagellum being present on segments 3 through 10 and usually 11 as well. They can be separated from the males of plumosa and metenua by their shorter antennae, and specifically, by the penultimate flagellar segment being no more than twice as long as broad and usually shorter.

Female. Measurements and ratios: N, 7; length, about 11 mm.; width, about 3.5 mm.; wing length, M = 3.39 0.197 mm.; hooks in hamulus, M = 11.71 0.286; flagellar segment 1/segment 2, M = 2.02 0.038.

Male. Measurements and ratios: N, 10; length, 8-11 mm; width, 2.0-2.5 mm.; wing length, M = 2.90 0.253 mm.; hooks in hamulus, M — 10.60 0.267; flagellar segment 2/segment 1, (9) M.= 3.46 0.100.

Structure and color: Integumental color as in M. lupina. Sculp- turing and structure as in lupina with the following difterences: clypeus with punctures smaller, round and regular in size, sepa- rated mostly by less than half a puncture width, surface dulled especially posteriorly by reticular shagreening, but moderately shiny; supraclypeal area shiny, delicately or not at all shagreened: flattened lateral areas of vertex with minute round punctures sep- arated mostly by one to two puncture widths, surface shagreened; apical flagellar segment distinctly longer than broad, rounded apically; maxillary palpal segments in ratio of about 3.2:3.2:3.4:1.0, palpi longer in total length than in lupina; galeae moderately shiny above, dulled by finely reticular shagreening, usually less so in apical third. Mesoscutum not shagreened laterally and anteriorly, usually with small posteromedian impunctate area; metanotum often with dorsomedian area shiny, unshagreened; mesepisternum with lateral surface slightly or not at all shagreened, punctures round, deep, separated mostly by half a puncture width. Meta- somal tergum 2 with basal area with minute round punctures separated mostly by more than one puncture width and often by more than two puncture widths, interband zone with punctures separated mostly by one to two puncture widths, not much sparser medially than laterally, apical area impunctate; tergum 3 with narrow apical area impunctate; pygidial plate U-shaped with arms diverging in basal half or less and subparallel apically.

Hair: On head and thorax cinereous except dark brown on vertex, mesoscutum with large posteromedian brown patch extending for- ward to a line at anterior margins of tegulae or almost so, and scutellum brown medially. Vestiture of metasoma as in M. lupine except as follows: metasomal terga 2 and 3 with apical areas with suberect hairs more abundant; tergum 3 separated from apical margin across all or most of tergum; tergum 4 without suberect simple hairs medially near apical margin; terga 5 and 6 with hairs pale brown except large lateral cinereous tufts; sternal hairs golden brown medially to white laterally. Legs with white or pale ochra- ceous hairs except as follows: fore basitarsi and often distitarsi and often middle and hind basitarsi dark brown; fore and middle tibiae and middle basitarsi with inner surfaces yellow to red; hind basitarsi and tibiae with inner surfaces yellow to reddish-orange; scopal hairs white except pale brown on and near basitibial plates, with rachises extending far beyond plumose part, with branches sparse, usually one or two on each side of rachis, and long.


Names
Scientific source:

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Hosts · map
FamilyScientific name @ source (records)
Onagraceae  Clarkia sp @ BBSL (1)

Clarkia speciosa @ BBSL (1)
_  Withheld @ BBSL (2); BBSL__PINN (2)

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Updated: 2021-05-12 03:01:12 gmt
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