Striking New Species ofBrachysDejean, 1833 (Coleoptera: Buprestidae) from New Mexico, Texas, and Mexico
Author
Hespenheide, Henry A.
text
The Coleopterists Bulletin
2015
2015-06-30
69
2
221
224
http://dx.doi.org/10.1649/0010-065x-69.2.221
journal article
10.1649/0010-065x-69.2.221
1938-4394
Brachys barri
Hespenheide
,
new species
(
Fig. 2
)
Description.
Holotype
female:
Rounded heptagonal, more abruptly narrow in front than behind; black head, pronotum, and venter, strongly shiny, with pale golden reflections, anterior 2/3 of elytra bright blue, more greenish blue along suture, posterior 1/3 irregularly reddish coppery, extending anteriorad at lateral margin and middle of each elytron, shorter along suture (
Fig. 2
); head nearly glabrous with sparse, inconspicuous setae between upper margins of eyes and on vertex, and just above epistoma and antennal insertions; pronotum glabrous on disc, sparsely covered with silvery setae along base lateral to midline and more broadly along lateral margins; elytra glabrous in blue area, coppery area with dense coppery setae with narrow band of silver setae along anterior margin; ventral surface with uniform, sparse, short, inconspicuous setae, line of sparse silvery setae along posterior margin of terminal ventrite;
3.55 mm
long,
1.75 mm
wide.
Head:
Width 1.00 mm, weakly depressed along midline, more broadly so between eyes; epistomal width 1/5 of distance between inner margins of eyes.
Pronotum:
Strongly convex at anterior margin in cross-section, nearly flat in lateral view, transversely depressed along base lateral to midline, widest at base, sides very weakly rounded to apical angles; prehumeral carinae broadly, weakly rounded ridge for about 1/2 length of pronotum at middle; surface shagreened on midline at base and on disc, otherwise ocellate punctate along margins. Scutellum triangular, weakly rounded on anterior margin, about 2X wider than long.
Elytra:
Slightly narrower than pronotum at base, equally wide at base and middle, weakly emarginate between; humeri moderately prominent, each elytron with strong, linear depression along base interior to humerus, and weakly carinate along lateral margin only on anterior 4/5 of blue area; surface obsoletely punctate on disk in blue area, becoming transversely rugulose at lateral margins, surface densely micropunctate and granular in the apical coppery area.
Venter:
Faintly, inconspicuously shagreened and ocellate punctate, punctures open behind. Apex of terminal abdominal ventrite broadly rounded with 12 deflexed, blunt teeth, longest at middle becoming shorter at lateral edges.
H o l o t y p e.
Mexico
:
Mexico
,
7.4 km
NW
Temescaltepec
,
2148 m
,
20.08.1991
,
W.F. Barr
, oak-pine for[est] (
CASC
, on indefinite loan from
WFBM
)
.
Etymology.
Named in honor of the noted coleopterist and collector of the unique
holotype
, the late William F. Barr (Westcott and Merickel 2012).
Discussion.
This is arguably one of the most beautiful species of
Brachys
in
Mexico
. The short lateral carina on the elytra of this and the following species is unusual among previously described species in the genus, with only
Brachys intervallorum
Hespenheide
,
Brachys simplex
Waterhouse
, and the following species having partial carinae, and
Brachys fulgidus
Fisher
and
Brachys exquisitus
Hespenheide
lacking carinae altogether.