Anthidium hallinani

Taxonomy

Family: Megachilidae
Subfamily: Megachilinae
Tribe: Anthidiini
Genus: Anthidium Fabricius, 1804
Subgenus: A. (Anthidium) Fabricius, 1804
Species: Anthidium hallinani Schwarz, 1933
Common name: none

Overview

Anthidium (Anthidium) hallinani are primarily dark brown to black with yellow maculations and reddish-brown antennal flagellumflagellum:
any segment of the antenna past the scape and pedicel
, tegulategula:
the usually oval, small shield-like structure carried at the extreme base of the wing where it attaches to the body
, distaldistal:
place on a segment that is furthest from the place of attachment with the body
half of the femorafemora:
the third segment of the leg, situated between the trochanter and the tibia
, inner tibiaetibiae:
the segment of the leg, between the femur and the tarsus
and tarsitarsi:
the group of segments at the end of the leg following the tibia
, and sternasterna:
the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
(Gonzalez and Griswold 2013Gonzalez and Griswold 2013:
Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal 168: 221ndash;425.). Females have white pubescencepubescence:
short, fine hair
, except for brown to light ferruginousferruginous:
rust-colored
hairs on the vertexvertex:
the area between the ocelli and the back of the head
, pronotal lobepronotal lobe:
a part of the pronotum located dorsally on the posterior margin of the pronotum and overlaps the anterior thoracic spiracle
, dorsaldorsal:
in general, the upper surface
area of the mesepisternummesepisternum:
the second or middle segment on the side of the thorax bearing the middle legs and the forewings, the pronotum is the first segment
and metepisternummetepisternum:
thorax segment bearing the hind legs and hind wings
, propodeumpropodeum:
the last segment of the thorax
, scutumscutum:
the large segment on top of the thorax located between the wings and behind the head
, axillaaxilla:
the triangular or rounded point on the thorax where thoracic muscles meet the forewing of an insect
, scutellumscutellum:
shield shaped plate behind scutum
, inner tarsitarsi:
the group of segments at the end of the leg following the tibia
, and S6S6:
the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
. Females and males have a body length of 9.2–11.2 mm and 10.3–14.6 mm, respectively (Gonzalez and Griswold 2013Gonzalez and Griswold 2013:
Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal 168: 221ndash;425.).

Diagnostic characteristics

(modified from Gonzalez and Griswold 2013Gonzalez and Griswold 2013:
Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal 168: 221ndash;425.)

• Female labrumlabrum:
  part of the head abutting the clypeus, folds down in front of the mouthparts
  has large preapicalpreapical:
  referring to a section of a bee that is physically found just before the outermost (or apical) end of the section or segment
  projections that curve upwards, and lacks basalbasal:
  originating at the foundation of a structure
  protuberances.
• Female mandiblemandible:
  bee teeth, so to speak, usually crossed and folded in front of the mouth
  has seven teeth.
• Female propodealpropodeal:
  the last segment of the thorax
  triangle is dull and finely lineolatelineolate:
  marked with fine lines
  .
• Female hind tibiatibia:
  the segment of the leg, between the femur and the tarsus
  with anterioranterior:
  toward the head or on the head side of a segment being described
  carina present.
• Female T1–T5 discal areas are dull and weakly imbricateimbricate:
  overlapping, like shingles or roof tiles
  between dense punctures.
• Female T1–T5 apicalapical:
  near or at the apex or end of any structure
  margins are narrow and dull.
• Female T6T6:
  the segments on the top side of the abdomen, often abbreviated when referring to a specific segment to T1, T2, T3, T4, T5, T6, or T7
  median emarginationemargination:
  a notched or cut out place in an edge or margin, can be dramatic or simply a subtle inward departure from the general curve or line of the margin or structure being described
  continues basally into a short carinacarina:
  a clearly defined ridge or keel, not necessarily high or acute; usually appears on bees as simply a raised line
  .
• Male S4S4:
  the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
  with median apicalapical:
  near or at the apex or end of any structure
  brush of short, dense, reddish-brown hairs.
• Male S4S4:
  the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
  apicalapical:
  near or at the apex or end of any structure
  margin is concave medially.
• Male S6S6:
  the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
  apicalapical:
  near or at the apex or end of any structure
  margin is thick and truncatetruncate:
  ending abruptly, or squared off
  medially with sharp laterallateral:
  relating, pertaining, or attached to the side
  projections.
• Male S7S7:
  the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
  is rounded distally.
• Male S8S8:
  the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
  apicalapical:
  near or at the apex or end of any structure
  process is straight and weakly bifidbifid:
  divided into two branches; forked
  .
• Male T6T6:
  the segments on the top side of the abdomen, often abbreviated when referring to a specific segment to T1, T2, T3, T4, T5, T6, or T7
  laterallateral:
  relating, pertaining, or attached to the side
  spine is straight, and about as long as the T7T7:
  the segments on the top side of the abdomen, often abbreviated when referring to a specific segment to T1, T2, T3, T4, T5, T6, or T7
  median spine.
• Male T7T7:
  the segments on the top side of the abdomen, often abbreviated when referring to a specific segment to T1, T2, T3, T4, T5, T6, or T7
  laterallateral:
  relating, pertaining, or attached to the side
  lobe is broadly rounded.

May be confused with

Anthidium hallinani may be confused with A. aztecum based on the dull and finely and densely punctatepunctate:
studded with tiny holes
terga with elevated discal areas, the shape of female T6T6:
the segments on the top side of the abdomen, often abbreviated when referring to a specific segment to T1, T2, T3, T4, T5, T6, or T7
, and male genitaliagenitalia:
all the genital structures collectively
and sternasterna:
the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
(Gonzalez and Griswold 2013Gonzalez and Griswold 2013:
Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal 168: 221ndash;425.). Female A. hallinani can be differentiated from A. aztecum by the depressed apicalapical:
near or at the apex or end of any structure
rim on T6T6:
the segments on the top side of the abdomen, often abbreviated when referring to a specific segment to T1, T2, T3, T4, T5, T6, or T7
only being visible medially and the presence of a short carinacarina:
a clearly defined ridge or keel, not necessarily high or acute; usually appears on bees as simply a raised line
above the median emarginationemargination:
a notched or cut out place in an edge or margin, can be dramatic or simply a subtle inward departure from the general curve or line of the margin or structure being described
(Gonzalez and Griswold 2013Gonzalez and Griswold 2013:
Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal 168: 221ndash;425.). Male A. hallinani can be differentiated from A. aztecum by the broad, dense brush of reddish-brown hairs; the brush of A. aztecum is more pale-colored and sparse. Anthidium hallinani also has a less sharply projected laterallateral:
relating, pertaining, or attached to the side
lobes of S6S6:
the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
, a more truncatetruncate:
ending abruptly, or squared off
S6S6:
the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
apicalapical:
near or at the apex or end of any structure
margin medially, and a broader S8S8:
the plates on the underside of the abdomen, often abbreviated when referring to a specific segment to S1, S2, S3, S4, S5, S6, S7, or S8
apicalapical:
near or at the apex or end of any structure
process (Gonzalez and Griswold 2013Gonzalez and Griswold 2013:
Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal 168: 221ndash;425.).

Phenology

Anthidium hallinani adults have been recorded in flight from November to March; however, a single record was recorded in September. Peak activity occurs from the last half of January to the first half of February (Gonzalez and Griswold 2013Gonzalez and Griswold 2013:
Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal 168: 221ndash;425.).

Host associations

Anthidium hallinani have been observed visiting Stylosanthes guianensis (Fabaceae) and Hyptis sp. (Lamiaceae) (Gonzalez and Griswold 2013Gonzalez and Griswold 2013:
Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal 168: 221ndash;425.).

Nesting behavior

Nesting behavior is unknown.

Distribution

Anthidium hallinani occur in Costa Rica, Panama, and Chiapas, Southern Mexico. They are found primarily in the Chiapas Depression, dry forests in Central American and Panama, pine-oak forests in Central America, and moist forest habitats (Gonzalez and Griswold 2013Gonzalez and Griswold 2013:
Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal 168: 221ndash;425.). None are known to occur in the U.S. or Canada.

​Distribution map generated by Discover Life -- click on map for details, credits, and terms of use.

References

Gonzalez, V.H. and T.L. Griswold. 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168: 221-425.