BRN 9-3 - Flipbook - Page 66
Genus Schizax (LeConte, 1873)
80. Schizax senex (LeConte, 1873). Specimens have
been raised on both Net Leaf Hackberry (Celtis
reticulata) and Desert Willow (Chilopsis linearis).
The iNaturalist observation by Joel DuBois in Las
Cruces on 22 March 2020 is shown here under a
creative commons license.
85.
Genus Sphaenothecus (White, 1853)
81. Sphaenothecus bilineatus (Gory, 1831). Doublebanded Bycid. The larval host plants of this species
include Honey Mesquite (Prosopis glandulosa) and
roses. According to BugGuide: ÒMales position
themselves on the highest tips of branches on
ßowering shrubs or small trees and keep lookout
for females. Their long thin antennae wave in the
wind. When females arrive, the males are quick to
take action and they frequently mate while the
females feed.Ó (See original source at the link
above.) Laura GaudetteÕs observation of such an
encounter is posted on iNaturalist and is shown
here under a Creative Commons license. It was
made on 27 August 2015 near City of Rocks State
Park.
Genus Stenaspis (Audinet-Serville, 1834)
82. Stenaspis solitaria (Say, 1823). SayÕs Black Bycid.
Often found on Mesquite and Acacia. Apparently
they are fond of ßying about on hot days. Leslie
FlintÕs iNaturalist observation, shown here under a
Creative Commons license, was made at the City of
Rocks State Park on 27 August 2015.
83. Stenaspis verticalis (Audinet-Serville, 1834). There
are two subspecies, per BugGuide. S. v. insignis,
which has a red pronotum, is found in Texas, and S.
v. arizonicus, which has a dark pronotum, is found in
Arizona. As of 12 July 2025 there were no
iNaturalist observations of this species. Lon
Brehmer made the observation shown here (of S. v.
arizonicus) under a Creative Commons license on
23 September 2010, northeast of Tucson - showing
a dark pronotum. iNaturalist observations of S. v.
insignis, which tend to be from south central and
southeast Texas, show a red pronotum.
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Genus Dendrobius (LeConte, 1858)
84. Dendrobias mandibularis (Dupont in AudinetServille, 1834) Long-jawed Longhorn Beetle. Larval
hosts include willows and hackberry. Observations
bracket our area to the east and west. The closest
iNaturalist observation (as of 12 July 2025) is from
San Simon, Arizona, just north of Portal, by
ÒblacktipÓ. It is shown here under a Creative
Commons license.
Genus Tragidion (Audinet-Serville, 1834). BugGuide
sees Þt to note that ÒMost species (in this genus) are
morphologically similar and hard to identify; species
boundaries remain indistinct.Ó See Ted MacRaeÕs blog
(Beetles in the Bush) on the identiÞcation of species in this
genus (Tragidion confusion dated 02 February 2009).
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