Anthidium cochimi

Taxonomy

Family: Megachilidae
Subfamily: Megachilinae
Tribe: Anthidiini
Genus: Anthidium Fabricius, 1804
Subgenus: A. (Anthidium) Fabricius, 1804
Species: Anthidium cochimi Snelling, 1992
Common name: none

Overview

Anthidium (Anthidium) cochimi are dark brown to black with yellow or cream-colored maculations (Gonzalez and Griswold 2013). Females have white pubescence except for limited yellow to brown hairs on the vertex, scutum, axilla, scutellum, inner tarsi, and S6. Females range in body length from 9.5–13.2 mm (Gonzalez and Griswold 2013). Males have pale pubescence on the vertex, scutum, and scutellum, and range in body length from 15–17.7 mm (Gonzalez and Griswold 2013).

Diagnostic characteristics

(modified from Gonzalez and Griswold 2013)

May be confused with

Female A. cochimi may be confused with A. maculifrons due to the presence of T1T5 with elevated discal areas, and T6 with crenulate preapical carina and small, lateral projections (Gonzalez and Griswold 2013). Female A. cochimi can be differentiated from A. maculifrons by its clypeus with a slightly convex distal margin and low sublateral tubercles (Gonzalez and Griswold 2013). Additionally, A. cochimi has hooked apical hairs on the disc of the clypeus and distal half of the supraclypeal area, while A. maculifrons has normal hairs (Gonzalez and Griswold 2013). Male A. cochimi can be differentiated from all other Anthidium by the subtriangular shaped lateral lobe on T7 (Gonzalez and Griswold 2013).

Phenology

Anthidium cochimi adults have been recorded in flight from March to June and from late September to early November (Gonzalez and Griswold 2013).

Host associations

Anthidium cochimi is a generalist that has been observed visiting a variety of species within Asteraceae, Fabaceae, and Zygophyllaceae (Gonzalez and Griswold 2013).

Nesting behavior

Anthidium cochimi may nest in the abandoned nests of Diadasia (Apidae) (Gonzalez and Griswold 2013).

Distribution

Anthidium cochimi occur throughout southern Arizona, southern New Mexico, and Texas within the U.S. (Gonzalez and Griswold 2013; Discover Life 2018). In Mexico, they are found in Baja California Sur, Baja California, Sonora, Durango, Coahuila, and Guanajuato. They are native to Baja California, the Sonoran and Chihuahuan deserts, the Gulf of California, and San Lucan xeric scrub landscapes (Gonzalez and Griswold 2013).


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

<p><em>Anthidium cochimi</em> female face, photo: Tevan Brady</p>
Anthidium cochimi female face, photo: Tevan Brady
<p><em>Anthidium cochimi</em> female lateral habitus, photo: Tevan Brady</p>
Anthidium cochimi female lateral habitus, photo: Tevan Brady
<p><em>Anthidium cochimi</em> female abdomen, photo: Tevan Brady</p>
Anthidium cochimi female abdomen, photo: Tevan Brady
<p><em>Anthidium cochimi</em> female, diagram showing the dorsal view of the sixth tergite (T6), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)</p>
Anthidium cochimi female, diagram showing the dorsal view of the sixth tergite (T6), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)
<p><em>Anthidium cochimi</em> male face, photo: Tevan Brady</p>
Anthidium cochimi male face, photo: Tevan Brady
<p><em>Anthidium cochimi</em> male lateral habitus, photo: Tevan Brady</p>
Anthidium cochimi male lateral habitus, photo: Tevan Brady
<p><em>Anthidium cochimi</em> male abdomen, photo: Tevan Brady</p>
Anthidium cochimi male abdomen, photo: Tevan Brady
<p><em>Anthidium cochimi</em> male, dorsal view of seventh tergum (T7), photo: Tevan Brady</p>
Anthidium cochimi male, dorsal view of seventh tergum (T7), photo: Tevan Brady
<p><em>Anthidium cochimi</em> male, diagram showing dorsal view of seventh tergum (T7), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)</p>
Anthidium cochimi male, diagram showing dorsal view of seventh tergum (T7), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)
<p><em>Anthidium cochimi</em> male, diagram showing ventral view of sixth sternum (S6), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)</p>
Anthidium cochimi male, diagram showing ventral view of sixth sternum (S6), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)
<p><em>Anthidium cochimi</em> male, diagram showing ventral view of seventh sternum (S7), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)</p>
Anthidium cochimi male, diagram showing ventral view of seventh sternum (S7), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)
<p><em>Anthidium cochimi</em> male, diagram showing ventral view of eighth sternum (S8), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)</p>
Anthidium cochimi male, diagram showing ventral view of eighth sternum (S8), diagram by Victor Gonzalez (Gonzalez and Griswold 2013)