Texas Beetle Resources

Return to Texas Entomology - Compiled by Mike Quinn


Pachybrachis of Texas - Family Chrysomelidae

There are 58 spp. of Pachybrachis in Texas (Riley et al. 2003) plus numerous more undescribed spp.
  Over 80 Pachybrachis spp. from Texas and surrounding states are shown here.
Seven spp. are possibly endemic to Texas.
Speciemens primarily shot from the ERGC, OSUC, TAMUIC, TORC and the UTIC collections

Pachy identification is complicated by a generally high level of intraspecific variation in color,
and to some extent, in sculpture. Also, most species show strong sexual dimorphism. (Riley et al. 2002)
This genus was last revised by Fall (1915) and a number of synonymies may be in order.

Pubescent - Yellow - Striped - Dark - Mottled - Rio Grande - Morpho spp. - Adjacent States - Need - References


Pubescent Species (Fall's Group A) - Only morosus occurs e. of TX
 
Pachybrachis haematodes Suffrian - AZ-TX-SD-CO / Mex. - Hosts on var. Quercus spp.
Pachybrachis haematodes Suffrian - Pachybrachis haematodes Pachybrachis haematodes Suffrian - Pachybrachis haematodes Pachybrachis haematodes Suffrian - Pachybrachis haematodes Pachybrachis haematodes Suffrian - Pachybrachis haematodes


Pachybrachis morosus Haldeman - TX-FL-NY-NE, c. TX - on Oaks
Pachybrachis morosus Haldeman - Pachybrachis morosus Pachybrachis morosus Haldeman - Pachybrachis morosus

Pachybrachis thoracicus Jacoby - CA-TX, NV / Mex. - short series reported from willow
Pachybrachis thoracicus Jacoby - Pachybrachis thoracicus Pachybrachis thoracicus Jacoby - Pachybrachis thoracicus

Pachybrachis marmoratus Jacoby - AZ to w. TX, CO / Mex - several recorded on various Asteraceae
Pachybrachis marmoratus Jacoby - Pachybrachis marmoratus Pachybrachis marmoratus Jacoby - Pachybrachis marmoratus Pachybrachis marmoratus Jacoby - Pachybrachis marmoratus Pachybrachis marmoratus Jacoby - Pachybrachis marmoratus Pachybrachis marmoratus Jacoby - Pachybrachis marmoratus Pachybrachis marmoratus Jacoby - Pachybrachis marmoratus

Pachybrachis brunneus Bowditch - CA-TX-CO-UT - short series coll'ed from Salix in AZ
Pachybrachis brunneus Bowditch - Pachybrachis brunneus Pachybrachis brunneus Bowditch - Pachybrachis brunneus Pachybrachis brunneus Bowditch - Pachybrachis brunneus Pachybrachis brunneus Bowditch - Pachybrachis brunneus Pachybrachis brunneus Bowditch - Pachybrachis brunneus Pachybrachis brunneus Bowditch - Pachybrachis brunneus 

Pachybrachis xanti Crotch - CA to w. TX, UT / Mex. - saltbush - Atriplex (Chenopodiaceae) and creosote
Picture Rocks Pachybrachis - Pachybrachis xanti Picture Rocks Pachybrachis - Pachybrachis xanti

Slightly pubescent, pale sp. from Brewster Co.
Pachybrachis Pachybrachis Pachybrachis


Yellow Species (Fall's Group B) - All have western distributions

Pachybrachis abdominalis (Say) - AZ-TX-MB-AB - recorded from multiple plant families
Pachybrachis abdominalis (Say) - Pachybrachis abdominalis - female Pachybrachis abdominalis (Say) - Pachybrachis abdominalis - female Pachybrachis abdominalis (Say) - Pachybrachis abdominalis - female Pachybrachis abdominalis (Say) - Pachybrachis abdominalis - female

Pachybrachis arizonensis Bowditch - CA-TX, KS, UT - coll'ed from Salix
Pachybrachis arizonensis Bowditch - Pachybrachis arizonensis Pachybrachis arizonensis Bowditch - Pachybrachis arizonensis Pachybrachis arizonensis Bowditch - Pachybrachis arizonensis Pachybrachis arizonensis Bowditch - Pachybrachis arizonensis

Pachybrachis caelatus LeConte - CA-TX-SD-ID - most records from Asteraceae
Pachybrachis caelatus LeConte - Pachybrachis caelatus - male Pachybrachis caelatus LeConte - Pachybrachis caelatus - male Pachybrachis caelatus LeConte - Pachybrachis caelatus - male Pachybrachis caelatus LeConte - Pachybrachis caelatus - male

Pachybrachis diversus Fall - NM-TX-IL-SD, FL - Normally asso. w/ willow, Salix, but also on Baccharis and Heterotheca
Pachybrachis diversus Fall - Pachybrachis diversus Pachybrachis diversus Fall - Pachybrachis diversus Pachybrachis diversus Fall - Pachybrachis diversus

Pachybrachis immaculatus Jacoby - CA-TX (IA, IL ?) / Mex. - on Parthenium hysterophorus (Asteraceae) in Mex.
Pachybrachis immaculatus Jacoby - Pachybrachis immaculatus Pachybrachis immaculatus Jacoby - Pachybrachis immaculatus Pachybrachis immaculatus Jacoby - Pachybrachis immaculatus

Pachybrachis jacobyi Bowditch - CA-TX-SD-UT - Reported from several herbacious plant families.
Pachybrachis jacobyi

Pachybrachis macronychus Fall - w. TX - Asso. w/ Mexican pinon pine
Pachybrachis macronychus Fall - Pachybrachis macronychus Pachybrachis macronychus Fall - Pachybrachis macronychus Pachybrachis macronychus Fall - Pachybrachis macronychus Pachybrachis macronychus Fall - Pachybrachis macronychus

Pachybrachis mellitus Bowditch - CA-TX-UT-NV - hosts on Creosote Bush
Pachybrachis - Pachybrachis mellitus Picture Rocks Pachybrachis - Pachybrachis mellitus

Pachybrachis minor Bowditch - CA to w. TX / Mex. - Ericameria and Hymenoclea (Asteraceae) appear to be hosts
Pachybrachis minor Bowditch - Pachybrachis minor Pachybrachis minor Bowditch - Pachybrachis minor Pachybrachis minor Bowditch - Pachybrachis minor

Pachybrachis mitis Fall  - Texas endemic? - pale, lightly blotched, ~2 mm - Illinois bundleflower (Desmanthus illinoensis, Fabaceae)
Pachybrachis mitis Fall - Pachybrachis mitis Pachybrachis mitis Fall - Pachybrachis mitis Pachybrachis mitis Fall - Pachybrachis mitis Pachybrachis mitis Fall - Pachybrachis mitis

Pachybrachis nero Bowditch - AZ to w. TX - asso. w/ snakeweed - Gutierrezia spp. (Asteraceae)
Pachybrachis nero Bowditch - Pachybrachis nero Pachybrachis nero Bowditch - Pachybrachis nero Pachybrachis nero Bowditch - Pachybrachis nero 

Pachybrachis pusillus Bowditch - AZ to c. TX / Mex. - eyes bulge, nearly touch - possibly on mesquite
Pachybrachis pusillus Bowditch - Pachybrachis pusillus Pachybrachis pusillus Bowditch - Pachybrachis pusillus Pachybrachis pusillus Bowditch - Pachybrachis pusillus

Pachybrachis umbraculatus Suffrian - AZ to w. TX / Mex. - one adult collected from Baccharis in AZ
Pachybrachis umbraculatus Suffrian - Pachybrachis umbraculatus Pachybrachis umbraculatus Suffrian - Pachybrachis umbraculatus Pachybrachis umbraculatus Suffrian - Pachybrachis umbraculatus Pachybrachis umbraculatus Suffrian - Pachybrachis umbraculatus

Pachybrachis xantholucens Fall - NM to w. TX - beaten or swept from creosote bush - Larrea tridentata
achybrachis xantholucens Fall - Pachybrachis xantholucens Pachybrachis xantholucens Fall - Pachybrachis xantholucens

Striped Species (Fall's Group D)

Pachybrachis bivittatus (Say) - CA-GA-QC-BC / Mex. - Hosts on Salix, Populus (Salicaceae)
Casebearer - Pachybrachis bivittatus Chrysomelidae - Pachybrachis bivittatus Casebearer - Pachybrachis bivittatus Cryptocephalus

Pachybrachis dubiosus LeConte - NM-TX-KS-CO / Mex. - Found feeding on Baccharis foliage.
Median thoracic stripe bifurcate in front, but does not tough the lateral stripes.

Pachybrachis dubiosus LeConte - Pachybrachis dubiosus Pachybrachis dubiosus LeConte - Pachybrachis dubiosus Pachybrachis dubiosus LeConte - Pachybrachis dubiosus Pachybrachis dubiosus LeConte - Pachybrachis dubiosus

Pachybrachis nigricornis autolycus Fall - AZ-TX-IL-MT / adj. CAN - Large series coll'ed from Desmodium (Fabaceae)
Pachybrachis nigricornis autolycus Fall - Pachybrachis nigricornis

Pachybrachis othonus (Say) - TX-GA-ME-ND / adj Can. - recorded from many plant families
Pachybrachis othonus (Say) - Pachybrachis othonus Pachybrachis othonus (Say) - Pachybrachis othonus

Pachybrachis othonus pallidipennis Suffrian - TX-LA-SK-AB
Pachybrachis othonus pallidipennis Suffrian - Pachybrachis othonus Pachybrachis othonus pallidipennis Suffrian - Pachybrachis othonus Pachybrachis othonus pallidipennis Suffrian - Pachybrachis othonus Pachybrachis othonus pallidipennis Suffrian - Pachybrachis othonus Pachybrachis othonus othonus ? - Pachybrachis othonus - male

Pachybrachis pawnee Fall - Great Plains - coll'ed from dock - Rumex (Polygonaceae)
Pachybrachis pawnee Fall - Pachybrachis pawnee Pachybrachis pawnee Fall - Pachybrachis pawnee Pachybrachis pawnee Fall - Pachybrachis pawnee Pachybrachis pawnee Fall - Pachybrachis pawnee

Pachybrachis vau Fall - AZ-TX-SD-ID / AB - reported from var. Asteraceae
Pachybrachis vau Fall - Pachybrachis vau Pachybrachis vau Fall - Pachybrachis vau Pachybrachis vau Fall - Pachybrachis vau 

Pachybrachis viduatus (Fabricius) - TX-FL-NC - hosts on St. John's-Wort, Hypericum tenuifolium (Clusiaceae). only known TX record from Tyler, TX.
Pachybrachis viduatus (Fabricius) - Pachybrachis viduatus - male Pachybrachis viduatus (Fabricius) - Pachybrachis viduatus - male Pachybrachis viduatus (Fabricius) - Pachybrachis viduatus - male

Pachybrachis virgatus LeConte - TX-MO-SD-CO - median stripe dilated, but not bifurcate anteriorly - single spmn coll'ed from Polygonum (Polygonaceae)
Black and white striped beetle - Pachybrachis virgatus Black and white striped beetle - Pachybrachis virgatus Black and white striped beetle - Pachybrachis virgatus Pachybrachis virgatus LeConte - Pachybrachis virgatus


Dark Species (Fall's Group E)

Pachybrachis cruentus
 LeConte - Endemic to Texas - Adults on Live Oaks

Pachybrachis cruentus LeConte - Pachybrachis cruentus Pachybrachis cruentus LeConte - Pachybrachis cruentus Pachybrachis cruentus LeConte - Pachybrachis cruentus Pachybrachis cruentus LeConte - Pachybrachis cruentus

Pachybrachis hector Fall - TX-KS - Coll'ed from blooming Acacia
Pachybrachis hector Fall - Pachybrachis hector Pachybrachis hector Fall - Pachybrachis hector Pachybrachis hector Fall - Pachybrachis hector Pachybrachis hector Fall - Pachybrachis hector Pachybrachis hector Fall  - Pachybrachis hector Pachybrachis hector Fall  - Pachybrachis hector Pachybrachis hector Fall  - Pachybrachis hector

see also Pachybrachis subvittatus

Pachybrachis femoratus (Olivier) - TX-FL-NY-IN - Reported from a variety of hosts (commonly coll'ed in Alabama)
Casebearer Beetle - Pachybrachis femoratus Casebearer - Pachybrachis femoratus Casebearer - Pachybrachis femoratus

Pachybrachis hepaticus (F. E. Melsheimer) - CA-FL-ME-ID / adj. Can. / Mex. to C. Amer. - Coll'ed from a varity of plants.
Pachybrachis hepaticus (Melsheimer) - Pachybrachis hepaticus Pachybrachis hepaticus (F. E. Melsheimer) - Pachybrachis hepaticus Leaf Beetle - Pachybrachis hepaticus

Pachybrachis impurus Suffrian - TX-MO-PA-IA - two spmns labeled from MO in asso. w/ persimmon - Diospyros virginiana (Ebenaceae)
Pachybrachis impurus Suffrian - Pachybrachis impurus Pachybrachis impurus Suffrian - Pachybrachis impurus Pachybrachis impurus Suffrian - Pachybrachis impurus Pachybrachis impurus Suffrian - Pachybrachis impurus Pachybrachis impurus Suffrian - Pachybrachis impurus Pachybrachis impurus Suffrian - Pachybrachis impurus

Pachybrachis luridus (Fabricius) - AZ-FL-NY-MT / ON-QC - sp. complex w/ about four spp. in TX. - Asso. w/ Baptisia, Amorpha, Desmodium plus other plant families. (One of the most commonly coll'ed Pachy spp. in Alabama)
Pachybrachis luridus (Fabricius) - Pachybrachis luridus - male Pachybrachis luridus (Fabricius) - Pachybrachis luridus - male Pachybrachis luridus (Fabricius)  - Pachybrachis luridus - female chrysomelid on Ceanothus americanus - Pachybrachis luridus Chrysomelidae, dorsal - Pachybrachis luridus Chrysomelidae, lateral - Pachybrachis luridus

Pachybrachis nigricornis (Say) - TX-FL-QC-AB - Recorded from Legumes and other plant families
Pachybrachis nigricornis carbonarius Haldeman - Pachybrachis nigricornis Pachybrachis nigricornis carbonarius Haldeman - Pachybrachis nigricornis Pachybrachis nigricornis carbonarius Haldeman - Pachybrachis nigricornis Pachybrachis nigricornis carbonarius Haldeman - Pachybrachis nigricornis

Pachybrachis nigricornis difficilis Fall - mostly w. NA (AZ-TX-QC-BC)
Pachybrachis nigricornis difficilis Fall - Pachybrachis nigricornis

Pachybrachis turgidicollis Fall - NM to w. TX - Type - brown with yellow marks, eyes close, stocky ('swollen neck')
Pachybrachis turgidicollis Fall - Pachybrachis turgidicollis Pachybrachis turgidicollis Fall - Pachybrachis turgidicollis Pachybrachis turgidicollis Fall - Pachybrachis turgidicollis Pachybrachis turgidicollis Fall - Pachybrachis turgidicollis Pachybrachis turgidicollis Fall - Pachybrachis turgidicollis Pachybrachis turgidicollis Fall - Pachybrachis turgidicollis Pachybrachis turgidicollis Fall - Pachybrachis turgidicollis

Pachybrachis vestigialis Fall - TX-AL-AR-NE (very similar to P. atomarius, which occurs in OK-AR, e. N. Amer.) reported from Bidens, Erigeron, Parthenium
Pachybrachis vestigialis Fall - Pachybrachis vestigialis Pachybrachis vestigialis Fall - Pachybrachis vestigialis Pachybrachis vestigialis Fall - Pachybrachis vestigialis Pachybrachis vestigialis Fall - Pachybrachis vestigialis

see also Pachybrachis atomarius (Melsheimer) - e NA (but no TX record)

Pachybrachis wenzeli Fall - AZ to w. TX - Type - on oak (and Mimosa) based on just two spmns.
Pachybrachis - Pachybrachis wenzeli

see also Pachybrachis subvittatus


Mottled Species

Pachybrachis brevicollis LeConte - Rocky Mtn states: MT, CO, w.TX - possibly on Sumac - Rhus glabra
Pachybrachis brevicollis LeConte - Pachybrachis brevicollis Pachybrachis brevicollis LeConte - Pachybrachis brevicollis Pachybrachis brevicollis LeConte - Pachybrachis brevicollis

Pachybrachis brevicornis Fall - Mostly south Texas - Collected from Prosopis glandulosa (Fabaceae)
Pachybrachis brevicornis Fall - Pachybrachis brevicornis Pachybrachis brevicornis Fall - Pachybrachis brevicornis Pachybrachis brevicornis Fall - Pachybrachis brevicornis

Pachybrachis bullatus Fall - AZ, w. TX - 2 spmns ex. silverleaf oak
Pachybrachis bullatus Fall - Pachybrachis bullatus - male Pachybrachis bullatus Fall - Pachybrachis bullatus Pachybrachis bullatus Fall - Pachybrachis bullatus Pachybrachis bullatus Fall - Pachybrachis bullatus Pachybrachis bullatus Fall - Pachybrachis bullatus

Pachybrachis delumbis Fall - w. TX
Pachybrachis delumbis Fall - Pachybrachis delumbis Pachybrachis delumbis Fall - Pachybrachis delumbis Pachybrachis delumbis Fall - Pachybrachis delumbis Pachybrachis delumbis Fall - Pachybrachis delumbis
 
Pachybrachis gracillipes Fall - w. TX - plant asso. not reported
Pachybrachis gracilipes Fall - Pachybrachis gracilipes Pachybrachis gracilipes Fall - Pachybrachis gracilipes Pachybrachis gracilipes Fall - Pachybrachis gracilipes Pachybrachis gracilipes Fall - Pachybrachis gracilipes

Pachybrachis laevis Bowditch - AZ-TX-CO-NV, SD - Small, yellow. polished, elytral punctations in lines. May be asso. w/ Prosopis.
Pachybrachis laevis Bowditch - Pachybrachis laevis Pachybrachis laevis Bowditch - Pachybrachis laevis Pachybrachis laevis Bowditch - Pachybrachis laevis Pachybrachis laevis Bowditch - Pachybrachis laevis

Pachybrachis latithorax Clavareau - AZ, s. TX to C. Amer., (BG records from San Patricia & Cameron Co.) - Coll'ed from Acacia and Leucaena (Fabaceae).
Pachybrachis latithorax Clavareau  - Pachybrachis latithorax Pachybrachis latithorax Clavareau - Pachybrachis latithorax Pachybrachis latithorax Clavareau - Pachybrachis latithorax Pachybrachis latithorax Clavareau - Pachybrachis latithorax

Pachybrachis mobilis Fall - s. CA to w. TX, CO - plant asso. not reported
Pachybrachis mobilis Fall - Pachybrachis mobilis Pachybrachis mobilis Fall - Pachybrachis mobilis Pachybrachis mobilis Fall - Pachybrachis mobilis Pachybrachis mobilis Fall - Pachybrachis mobilis

Pachybrachis obsoletus Suffrian, 1852 - NM-FL-NB-BC - reported from a variety of plant families
Pachybrachis obsoletus Suffrian - Pachybrachis obsoletus Pachybrachis obsoletus Suffrian - Pachybrachis obsoletus Pachybrachis obsoletus Suffrian - Pachybrachis obsoletus Pachybrachis obsoletus Suffrian - Pachybrachis obsoletus

Pachybrachis peccans Suffrian - NM-FL-NS-YK - reported from Salix and many other families
Pachybrachis=Pachybrachis Casebearer Beetle - Pachybrachis peccans Pachybrachina? - Pachybrachis peccans Beetle - Pachybrachis peccans Beetle - Pachybrachis peccans

Pachybrachis pectoralis (F. E. Melsheimer) - TX-FL-NY-NE / adj Can., BG record from College Station - eyes nearly touch - multiple host families reported
Pachybrachis pectoralis (F. E. Melsheimer) - Pachybrachis pectoralis Pachybrachis pectoralis (F. E. Melsheimer) - Pachybrachis pectoralis Pachybrachis pectoralis (F. E. Melsheimer) - Pachybrachis pectoralis Pachybrachis pectoralis (F. E. Melsheimer) - Pachybrachis pectoralis

Pachybrachis postfasciatus Fall - AZ, TX, KS - brown on pale background, subapical lateral band across the elytra. asso. w/ whitethorn acacia
Pachybrachis postfasciatus Fall - Pachybrachis postfasciatus Pachybrachis postfasciatus Fall - Pachybrachis postfasciatus Pachybrachis postfasciatus Fall - Pachybrachis postfasciatus Pachybrachis postfasciatus Fall - Pachybrachis postfasciatus

Pachybrachis spumarius Suffrian - TX-FL-QC-MB, n. TX October (Most commonly coll'ed Pachy in Alabama) - reported from many plant families
Pachybrachis spumarius Suffrian - Pachybrachis spumarius Case Bearer - Pachybrachis spumarius - male Pachybrachis Pachybrachis

Pachybrachis signatus Bowditch 1909 - CA to c. TX - Adults coll'ed off Baccharis spp. (Asteraceae)
Pachybrachis signatus Bowditch - Pachybrachis signatus Pachybrachis signatus Bowditch - Pachybrachis signatus Pachybrachis signatus Bowditch - Pachybrachis signatus Pachybrachis signatus Bowditch - Pachybrachis signatus

Pachybrachis sonorensis Jacoby - CA to w. TX - Host(s) unknown
Pachybrachis sonorensis Jacoby - Pachybrachis sonorensis Pachybrachis sonorensis Jacoby - Pachybrachis sonorensis Pachybrachis sonorensis Jacoby - Pachybrachis sonorensis Pachybrachis sonorensis Jacoby - Pachybrachis sonorensis

Pachybrachis subvittatus LeConte - NM to c. TX (panhandle to s. TX) - variable and sexually dimorphic, males pale, females dark
Pachybrachis subvittatus LeConte - Pachybrachis subvittatus Pachybrachis subvittatus LeConte - Pachybrachis subvittatus Pachybrachis subvittatus J. L. LeConte - Pachybrachis subvittatus Pachybrachis subvittatus J. L. LeConte - Pachybrachis subvittatus Pachybrachis subvittatus J. L. LeConte - Pachybrachis subvittatus
Pachybrachis subvittatus J. L. LeConte - Pachybrachis subvittatus Pachybrachis subvittatus J. L. LeConte - Pachybrachis subvittatus Pachybrachis subvittatus J. L. LeConte - Pachybrachis subvittatus Pachybrachis subvittatus J. L. LeConte - Pachybrachis subvittatus

Pachybrachis texanus Bowditch - c. TX to Mex. - bulging eyes nearly touch - on Huisache and Texas Ebony
Pachybrachis texanus Bowditch - Pachybrachis texanus Pachybrachis texanus Bowditch - Pachybrachis texanus Pachybrachis texanus Bowditch - Pachybrachis texanus - female Pachybrachis texanus Bowditch  - Pachybrachis texanus Pachybrachis texanus Bowditch - Pachybrachis texanus

Pachybrachis turbidus LeConte - TX-MO-WI-KS, c. & s. TX - on Oaks (per Quinn, 2000)
Pachybrachis turbidus LeConte - Pachybrachis turbidus Pachybrachis turbidus LeConte - Pachybrachis turbidus Pachybrachis turbidus LeConte - Pachybrachis turbidus - male Pachybrachis - Pachybrachis turbidus Case-bearing Leaf Beetle? - Pachybrachis turbidus Pachybrachis turbidus LeConte - Pachybrachis turbidus

Pachybrachis tridens (F. E. Melsheimer) - TX-FL-QC-MB - hosts on poison ivy
Case-bearing Leaf Beetle - Pachybrachis tridens Case-bearing Leaf Beetle - Pachybrachis tridens Beetle: 2012.05.22.24828 - Pachybrachis tridens Pachybrachis tridens (F. E. Melsheimer) - Pachybrachis tridens Pachybrachis tridens (F. E. Melsheimer) - Pachybrachis tridens Pachybrachis tridens (F. E. Melsheimer) - Pachybrachis tridens

Restricted to Southmost Texas

Pachybrachis duryi Fall - Sabal Palm Grove only - Many adults coll'ed from Leucaena (Fabaceae)
Pachybrachis duryi Fall - Pachybrachis duryi Pachybrachis duryi Fall - Pachybrachis duryi Pachybrachis duryi Fall - Pachybrachis duryi
  
Pachybrachis sp. (EGR 2) - Sabal Palm Grove
Pachybrachis sp. (EGR 2) - Pachybrachis Pachybrachis sp. (EGR 2) - Pachybrachis Pachybrachis sp. (EGR 2) - Pachybrachis

Pachybrachis sp. (EGR 3) - coastal south Texas on screwbean mesquite - Prosopis reptens
Pachycrachis sp. (EGR 3) - Pachybrachis Pachycrachis sp. (EGR 3) - Pachybrachis Pachycrachis sp. (EGR 3) - Pachybrachis

Pachybrachis sp. (EGR 6) - Sabal Palm Grove, on Texas ebony.
Pachybrachis sp. (EGR 6) - Pachybrachis Pachybrachis sp. (EGR 6) - Pachybrachis
Numbered Morpho Species

Pachybrachis sp. (EGR 19) -  w. to c. Texas
Pachybrachis sp (EGR 19) - Pachybrachis Pachybrachis sp. (EGR 19) - Pachybrachis Pachybrachis sp. (EGR 19) - Pachybrachis Pachybrachis sp. (EGR 19) - Pachybrachis

Pachybrachis sp. (EGR 37) - Travis Co.
?

Pachybrachis sp. (EGR 136) - s. TX to OK (+?) - one spmn from Juniperus
Pachybrachis sp. (EGR 136) - Pachybrachis Pachybrachis sp. (EGR 136) - Pachybrachis Pachybrachis sp. (EGR 136) - Pachybrachis Pachybrachis sp. (EGR 136) - Pachybrachis

Pachybrachis sp. (EGR 141) - Brazos Co.
?

Pachybrachis sp. (MAQ 1) - common in central Texas north to OK, Apr-May (=EGR 37?)
Pachybrachis Pachybrachis Pachybrachis Pachybrachis Pachybrachis brevicollis LeConte - Pachybrachis brevicollis

Pachybrachis sp. (MAQ 2) - Val Verde & Brewster Co., AZ
Pachybrachis Pachybrachis Pachybrachis Pachybrachis sp. (MAQ 2) - Pachybrachis

Species Recorded From Adjacent States

Pachybrachis cephalicus Fall - mostly coastal e. US states to LA
Pachybrachis  - Pachybrachis cephalicus - male Pachybrachis  - Pachybrachis cephalicus - male

Pachybrachys fuscipes Fall - AZ-NM
Pachybrachis fuscipes Fall - Pachybrachis fuscipes Pachybrachis fuscipes Fall - Pachybrachis fuscipes Pachybrachis fuscipes Fall - Pachybrachis fuscipes

Pachybrachis m-nigrum - no TX record, but occurs in OK, AR, LA, e. N. Amer.
Pachybrachis m-nigrum (Melsheimer) - Pachybrachis m-nigrum Pachybrachis deceptor Riley & Barney - Pachybrachis deceptor

Pachybrachis subfasciatus (LeConte) - no TX records, but known from OK, AR, LA, e. N. Amer. - Recorded from Juglans, Ulmus
Casebearer - Pachybrachis subfasciatus Case-bearing Leaf Beetle - Pachybrachis subfasciatus Case-bearing Leaf Beetle - Pachybrachis subfasciatus Pachybrachis subfasciatus (J. E. LeConte) - Pachybrachis subfasciatus

Pachybrachis trinotatus (Melsheimer) - e. N. Amer. to OK - Baptisia (Fabaceae)
Beetle on goldenrod leaf - Pachybrachis trinotatus Beetle - Pachybrachis trinotatus Beetle - Pachybrachis trinotatus

Pachybrachis coloradensis Bowditch - pale sp. with prominent punctations - Rocky Mtns to NM

Pachybrachis confusus Bowditch - dark, mottled sp. - e. US to LA



Need BugGuide Photos For These Mostly Trans-Pecos Species

Pachybrachis calidus Fall - AZ-TX / Mex. - Type - similar to brevicornis - Recorded from Acacia, Prosopis, Quercus.

Pachybrachis delumbis Fall - Texas endemic? - Type - similar to brevicornis, but much smaller, ~2 mm. TL: Davis Mtns.

Pachybrachis fractus Fall - Texas endemic? - Type - pale, stout, black markings on pronotum, black restricted to puntations on elytra

Pachybrachis precarius Fall - AZ, TX - Type - pale, marked pronotum, lightly marked elytra


Selected References

Balsbaugh, E. 1973. Geographical variation in Pachybrachis othonus (Coleoptera: Chrysomelidae) with descriptions of a new subspecies. Annals of the Entomological Society of America 66(2): 252-261.

Balsbaugh Jr., E.U. and K.L. Hays. 1972. The leaf beetles of Alabama (Coleoptera: Chrysomelidae). Auburn University Agricultural Experiment Station Bulletin 441: 1-223. (Full PDF)

Balsbaugh Jr, E.U. and W.L. Tucker. 1976. Geographical variation in Pachybrachis nigricornis (Coleoptera: Chrysomelidae). The Coleopterists Bulletin 30(2): 117131. (JSTOR)

Barney, R.J. 2016. Definition and revision of the Othonus Species-Group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae). The Coleopterists Bulletin 70(3): 569-605. (BioOne)

Barney, R.J. 2017. Definition and revision of the Luridus Species-Group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae). The Coleopterists Bulletin 71(1): 1-45. (BioOne)

Barney, R.J., L. LeSage, and K. Savard. 2013. Pachybrachis (Coleoptera, Chrysomelidae, Cryptocephalinae) of eastern Canada. ZooKeys 332: 95175. (Full Text)

Barney, R.J., and S.L. Hall. 2011. New host plant records for selected Cryptocephaline leaf beetles (Coleoptera: Chrysomelidae) in Kentucky. The Coleopterists Bulletin 65(1): 15-19. (BioOne)

Barney, R.J., S.M. Clark, E.G. Riley. 2011. Annotated list of the leaf beetles (Coleoptera: Chrysomelidae) of Kentucky: Subfamily Cryptocephalinae. Journal of the Kentucky Academy of Science 72(1): 3-23. (BioOne)

Bowditch, F.C. 1909. Notes on Pachybrachys and descriptions of new species. Canadian Entomologist 41: 237-244, 285-292, 312-324. (Full Text)

Clark, S.M., D.G. LeDoux, T.N. Seeno, E.G. Riley, A.J. Gilbert and J.M. Sullivan. 2004. Host plants of leaf beetle species occurring in the United States and Canada (Coleoptera: Megalopodidae, Orsodacnidae, Chrysomelidae exclusive of Bruchinae). Coleopterists Society, Special Publication no. 2. 476 pp.

Fall, H.C. 1915. A revision of the North American species of Pachybrachys. Transactions of the American Entomological Society 41: 291486 (Full Text)

LeConte, J.L. 1880. Short studies of North American Coleoptera. Transactions of the American Entomological Society 8: 163218

Quinn, M.A. 2000. Abundance and distribution of potential arthropod prey species in a typical Golden-cheeked Warbler habitat. Unpublished Thesis. Texas A&M University, College Station. ix + 182 pp. (Full Text)

Riley, E.G. and R.J. Barney. 2015. Definition and revision of the viduatus species-group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae). The Coleopterists Bulletin 69(1): 2559. (BioOne)

Riley, E.G., S.M. Clark, R.W. Flowers, and A.J. Gilbert. 2002. Family 124. Chrysomelidae Latreille 1802, Pp. 617-691 In: R.H. Arnett, Jr. et al., (editors) American Beetles vol. 2, Polyphaga: Scarabaeoidea through Curculionoidea. CRC Press, Boca Raton, FL. xiv + 861 pp. (Limited Preview)

Riley, E.G., S.M. Clark, and T.N. Seeno. 2003. Catalog of the leaf beetles of America north of Mexico (Coleoptera: Megalopodidae, Orsodacnidae and Chrysomelidae, excluding Bruchinae). Coleopterists Society, Special Publication no. 1. 290 pp.


24 July 2017 Mike Quinn / entomike@gmail.com / Texas Entomology /  Texas Beetle Resources / Photo Techniques