Return
to Texas Entomology - Compiled by Mike
Quinn
Pachybrachis of Texas - Family
Chrysomelidae
There are 59 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.
Specimens 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)
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 morosus Haldeman - e. US to AZ - on Oaks (Syn: haematodes)
![Pachybrachis haematodes Suffrian - Pachybrachis morosus Pachybrachis haematodes Suffrian - Pachybrachis morosus](https://bugguide.net/images/cache/KKE/KRK/KKEKRK6K4KB0VQJ08QC0EQD0PQO0LKVKZKB0HKPKEQ2K0KUK0KV08QD0AQAK5KHS1QRSNQTK5KVK7KAKWQ10WQOKBQCK.jpg)
Pachybrachis thoracicus Jacoby - CA-TX, NV / Mex. - short series reported from willow
![Pachybrachis thoracicus Jacoby - Pachybrachis thoracicus Pachybrachis thoracicus Jacoby - Pachybrachis thoracicus](https://bugguide.net/images/cache/8HV/HXH/8HVHXHBH9HGZ8LVZ8LAZ5LEZZLVHRL2ZGHRRGHTH0L5ZZL5Z7H3HXHVHQL1H8HAH0LEZ4H6ZLL4ZSLPZ5L1Z7LHR4H.jpg)
Pachybrachis marmoratus Jacoby - AZ to w. TX, CO / Mex - several recorded on various Asteraceae
![Pachybrachis marmoratus Jacoby - Pachybrachis marmoratus Pachybrachis marmoratus Jacoby - Pachybrachis marmoratus](https://bugguide.net/images/cache/NZ8/LBZ/NZ8LBZGL4ZUHVH8HAH8HCH5HDHGHPZHLDH5HGZMHOH4HVH4HEZ7HTHHL6Z4L3HEHRRGHPZGHBH7H6ZRLUZ5LUZ8LYHMH.jpg)
Pachybrachis brunneus Bowditch - CA-TX-CO-UT - short series coll'ed from Salix in AZ
Pachybrachis integratus Fall - CA to sw TX - asso. w/ willow (Salix, Salicaeae)
Pachybrachis xanti Crotch - CA to w. TX, UT / Mex. - saltbush - Atriplex (Chenopodiaceae) and creosote
![Picture Rocks Pachybrachis - Pachybrachis xanti Picture Rocks Pachybrachis - Pachybrachis xanti](http://bugguide.net/images/cache/O05/QA0/O05QA04QHSHKOKIKDK8KDKGKDKGKBK7KY05QNKKKOK7KTKGKF0NQAKNQY0VQOK5KRSMKTKKKO0PQC0HKUKGQ10PQB09Q.jpg)
Slightly pubescent, pale sp. from Brewster Co.
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](http://bugguide.net/images/cache/NLJL2L3LDLSRKH5RTZXRJZERYZSRPLFLNLRZ3ZKRFZJLJZKRWL3LNLMZVLSZOLMZBL3L2L3LNLQRJZFLCZJLNLYL1L.jpg)
Pachybrachis arizonensis Bowditch - CA-TX, KS, UT - coll'ed from Salix
![Pachybrachis arizonensis Bowditch - Pachybrachis arizonensis Pachybrachis arizonensis Bowditch - Pachybrachis arizonensis](http://bugguide.net/images/cache/6KSKWKKK1KEQ301QF09QJ08QY0UQJ08KTKAQLSAQDKXK2KQKV00KUKQK10EQC0SKCKMKDKAQLS1QHSIKVK9QCK8K1K.jpg)
Pachybrachis caelatus LeConte - CA-TX-SD-ID - most records from Asteraceae
![Pachybrachis caelatus LeConte - Pachybrachis caelatus - male Pachybrachis caelatus LeConte - Pachybrachis caelatus - male](http://bugguide.net/images/cache/SHGRLH8RYZKZUL3LWLFLELQZPLXR3ZIRULXZ9LFLULLZTZ3LAL2RZHGRSHERCLRZ9LXZSHXZTLKZAL3LWLSRRH4RZH.jpg)
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](https://bugguide.net/images/cache/MLV/ZGL/MLVZGLBZHLHRMHDHXHAHMHVHEHVZPHJHILNZNHTH5HDHHL2ZGLAZ7LWZXLBZ6H3H5LRREHJHNHLR8HTHGH4ZSLAHIH.jpg)
Pachybrachis immaculatus Jacoby - CA-TX (IA, IL ?) / Mex. - on Parthenium hysterophorus (Asteraceae) in Mex.
![Pachybrachis immaculatus Jacoby - Pachybrachis immaculatus Pachybrachis immaculatus Jacoby - Pachybrachis immaculatus](http://bugguide.net/images/cache/HZ2LJLPLMZOZ6RRH5ROZ0RHHSRELFLFZ7RCZJLWLLZ3Z7RJZJL1LPRKH2R1LKZCL2ROLQZAL4ROL8RAL7ZTL0ZDL4R.jpg)
Pachybrachis jacobyi Bowditch - CA-TX-SD-UT - Reported from several herbacious plant families.
![Pachybrachis jacobyi Pachybrachis jacobyi](http://bugguide.net/images/cache/QH5RHH4R3Z0ZWLYLVLIZVLQZTLLZ6LSREL0R3ZSRUL7ZTL7ZOLZZOZ7R0HSZSHGRDZ0RRH2R1LGRBLFLFZSRDZYL6L.jpg)
Pachybrachis macronychus Fall - w. TX - Asso. w/ Mexican pinon pine
![Pachybrachis macronychus Fall - Pachybrachis macronychus Pachybrachis macronychus Fall - Pachybrachis macronychus](https://bugguide.net/images/cache/9RR/Q1R/9RRQ1RLQOR80H09000E0H0P0R0600060S0MQL0E0K080CQG0VRIQVRIQFRKQCRP0Z060CQ401RYKNRZQYQ40YQRQYQ40.jpg)
Pachybrachis mellitus Bowditch - CA-TX-UT-NV - hosts on Creosote Bush
![Picture Rocks Pachybrachis - Pachybrachis mellitus Picture Rocks Pachybrachis - Pachybrachis mellitus](http://bugguide.net/images/cache/WHY/H6H/WHYH6HFHGH9ZQLPZRL8ZRLGZRLGZHLDHZL5ZILAZILJH2HJHIHTH7HTH4HGZXLUZRL1HLLBH0L5Z0LTH0LDHRL4ZKL2Z.jpg)
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](http://bugguide.net/images/cache/YK1RRQARSQFQP0S0W0YQG00040YQZQDQ50Q0KQCRIQ00U0CRSQH0W0FRKQH0SQJRLQCQG0YQG0S0G0S060Q0XQDRIQ.jpg)
Pachybrachis mitis Fall - Texas endemic? - pale, lightly blotched, ~2 mm - Illinois bundleflower (Desmanthus illinoensis, Fabaceae)
Pachybrachis nero Bowditch - AZ to w. TX - asso. w/ snakeweed - Gutierrezia spp. (Asteraceae)
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](https://bugguide.net/images/cache/002/0Z0/0020Z0P0JQQQARLQ1RLQVRRQURZQNRG0JQHQ3R0QS0G0BRJKFQM0L0P0R0XQH060TR20L0QQNRQQDRP0K050OQ80FQ.jpg)
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](https://bugguide.net/images/cache/QRY/ZXR/QRYZXRFZGR9LQZDLSZTL7ZOLXZDLSZDLKZ0H0ZLHQZLHKRDZ4R0H7ZAL2RHHPRRH2RFZFLALPRHH2RTL0ZBL0Z1LGRDL.jpg)
Pachybrachis xantholucens Fall - NM to w. TX - beaten or swept from creosote bush - Larrea tridentata
![Pachybrachis xantholucens Fall - Pachybrachis xantholucens Pachybrachis xantholucens Fall - Pachybrachis xantholucens](https://bugguide.net/images/cache/YRQ/QDR/YRQQDR0QBR20YQN0JQ70DQ80JQ50Q0QQORMQCR90CRN0L0I0VR3K1RYKAR40DQ80WRKQORKQWRHQNRZQDQHQCQ70ARYK.jpg)
Striped Species (Fall's Group D)
Pachybrachis bivittatus (Say) - CA-GA-QC-BC / Mex. - Hosts on Salix, Populus (Salicaceae)
![Pachybrachis bivittatus (Say) - Pachybrachis bivittatus Pachybrachis bivittatus (Say) - Pachybrachis bivittatus](https://bugguide.net/images/cache/CZ7/RJZ/CZ7RJZIRZHZZALIZNL3LUL3L9LRZ6LYL6LSRWLHZDZ0RJZ7RTZSR9LYLYZKR3Z2RAL6RZHERJZ0RULRZCZ4RCZ7RTZ7R.jpg)
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](http://bugguide.net/images/cache/V0EQD06QF0SKVKZKPKRK9KZK1K5KAK8KRSMKZSMKLSXK2KKK6K2QA0GQF0WQAK4KOKUQY0GKAKNQCK4KAK8KWK2QC0.jpg)
Pachybrachis nigricornis autolycus Fall - AZ-TX-IL-MT / adj. CAN - Large series coll'ed from Desmodium (Fabaceae)
![Pachybrachis nigricornis autolycus Fall - Pachybrachis nigricornis Pachybrachis nigricornis autolycus Fall - Pachybrachis nigricornis](https://bugguide.net/images/cache/9HF/HEH/9HFHEHYH8HWZ0LAZGLNZZLEZKL6Z5HEZ8LJH4LHRGHEZ4H1HLL8Z0LGZ4HRR9H9Z9HCHIHGZZLWZPHYHPHFH6HYHPHVZ.jpg)
Pachybrachis othonus (Say) - TX-GA-ME-ND / adj Can. - recorded from many plant families
![Pachybrachis othonus (Say) - Pachybrachis othonus Pachybrachis othonus (Say) - Pachybrachis othonus](https://bugguide.net/images/cache/RZ6/LYL/RZ6LYLELIZTZ2RZHERQHERLH8RRH8RTL5RALFLBLXZALQZELLZ3ZLZ2LYLELSR9L3LAL8RLH0ZRH4RKH6RRH8RVL6ROL.jpg)
Pachybrachis othonus pallidipennis Suffrian - TX-LA-SK-AB
Pachybrachis pawnee Fall - Great Plains - coll'ed from dock - Rumex (Polygonaceae)
![Pachybrachis pawnee Fall - Pachybrachis pawnee Pachybrachis pawnee Fall - Pachybrachis pawnee](https://bugguide.net/images/cache/DKX/KVK/DKXKVKMKNKNQD0PQT08Q10WQV02QC0GQV00KUK4KCKVQDK8KF04K1KNQOKBQHSXK2KQKWK2QB04QA08QA0UQB0QKPK.jpg)
Pachybrachis vau Fall - AZ-TX-SD-ID / AB - reported from var. Asteraceae
![Pachybrachis vau Fall - Pachybrachis vau Pachybrachis vau Fall - Pachybrachis vau](https://bugguide.net/images/cache/HL2/ZQL/HL2ZQLPZMLOH6HRR6HLRWHOHNHLR5HCHHL2Z8HZR4LHR6HAH7HTHHL4ZSLCH8HPZRL8ZML9Z4L9ZILNZLL1HRLCHHL.jpg)
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](https://bugguide.net/images/cache/2K0/KNK/2K0KNKQKVKPQF0WQZS9QHSVQZSVQF09QJ0NQV04QWK8QT05QWKHK10RK6K4QPKIK1KGKBKRKO08QB04QB09QY0NQTK5K.jpg)
Pachybrachis virgatus LeConte - TX-MO-SD-CO - median stripe dilated, but not bifurcate anteriorly - single spmn coll'ed from Polygonum (Polygonaceae)
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](https://bugguide.net/images/cache/KZO/L7Z/KZOL7ZCLFLSHKRDZGRKHPRYZERBLMZKH8RQH5RBL0ZAL8RTZQRCZLZNLKR6LIRJZERYZKRZHSZ0H7ZRHQZVLKZTL7Z.jpg)
Pachybrachis hector Fall - TX-KS - Coll'ed from blooming Acacia
Pachybrachis femoratus (Olivier) - TX-FL-NY-IN - Reported from a variety of hosts (commonly coll'ed in Alabama)
Pachybrachis hepaticus (F. E. Melsheimer) - CA-FL-ME-ID / adj. Can. / Mex. to C. Amer. - Coll'ed from a varity of plants.
Pachybrachis impurus Suffrian - sc US to e. TX - two spmns labeled from MO in asso. w/ persimmon - Diospyros virginiana (Ebenaceae)
![Pachybrachis impurus Suffrian - Pachybrachis impurus Pachybrachis impurus Suffrian - Pachybrachis impurus](https://bugguide.net/images/cache/6LR/ZWL/6LRZWLLZ1LMRHH4RDZ0RCZSRCZKRYZYLELJLJZFLWLIR9LYL6LZZNL7RDZHZELZZ2L0RNL3LFZLZTZZZOZIRULRZELQZ.jpg)
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 nigricornis (Say) - TX-FL-QC-AB - Recorded from Legumes and other plant families
![Pachybrachis nigricornis (Say) - Pachybrachis nigricornis Pachybrachis nigricornis (Say) - Pachybrachis nigricornis](https://bugguide.net/images/cache/1LI/ZCL/1LIZCL7Z6L6ROZ7RSH5RLHKRZHMZRH7ZALSZCL0ZZHMZVLER0HKZHHERQHKZRH5RKH7ZCL5R1L4RLH0ZTL0ZSH4RQH.jpg)
Pachybrachis nigricornis difficilis Fall - mostly w. NA (AZ-TX-QC-BC)
![Pachybrachis nigricornis difficilis Fall - Pachybrachis nigricornis Pachybrachis nigricornis difficilis Fall - Pachybrachis nigricornis](https://bugguide.net/images/cache/4R0/HPR/4R0HPRQHKRTLFLELRZ2LLZ6LHZNLJLULMRYZ0RUL0RPLXR3Z2RLHQRWLRZPLLZTZ7RNLHZYZYLYZXRWLFLUL0RCZIR.jpg)
Pachybrachis stygicus Fall - TX-FL-NC-SD (Syn: vestigialis, very similar to P. atomarius, which occurs in OK-AR, e. N. Amer.)
![Pachybrachis vestigialis Fall - Pachybrachis vestigialis Pachybrachis vestigialis Fall - Pachybrachis vestigialis](http://bugguide.net/images/cache/MHTHGHDH6H6ZML5ZSLPZLL6ZHLVHZL6Z4HEZMHEZRLPZXHOHKL1H4HTHIHGZHL9ZEHHRNH1Z8L1ZGL3HGLZR9HBZML.jpg)
Pachybrachis turgidicollis Fall - NM to w. TX - Type - brown with yellow marks, eyes close, stocky ('swollen neck')
Pachybrachis varians Bowditch - TX-AL-TN-OK
![Pachybrachis varians Bowditch - Pachybrachis varians Pachybrachis varians Bowditch - Pachybrachis varians](https://bugguide.net/images/cache/6HR/RWH/6HRRWHLRMH1ZHL8ZKL4ZQLGZXLHREH1ZNHLRNHFHGL3H4L3HUHDH0LEZIH4Z4HDH7HEZSLAHLLEZHLEZ5LHRUHWZ2H.jpg)
Pachybrachis wenzeli Fall - AZ to w. TX - Type - on oak (and Mimosa) based on just two spmns.
![Pachybrachis - Pachybrachis wenzeli Pachybrachis - Pachybrachis wenzeli](http://bugguide.net/images/cache/IROZSRCZ2R2LIZ1LIZ1LSZALQZCLQZPLSR3Z3L6LQRNLRZWLRZYZQRYZ0RPLZZOZKR2L0RYZERCLXZOL0ZOL7ZOL6R.jpg)
see also Pachybrachis atomarius (Melsheimer) - e NA (but no TX records)
see also Pachybrachis subvittatus LeConte - NM to c. TX (panhandle to s. TX)
Mottled Species
Pachybrachis brevicollis LeConte - Rocky Mtn states: MT, CO, w. TX - possibly on Sumac - Rhus glabra
Pachybrachis brevicornis Fall - Mostly south Texas
- Collected from Prosopis glandulosa (Fabaceae)
![Pachybrachis brevicornis Fall - Pachybrachis brevicornis Pachybrachis brevicornis Fall - Pachybrachis brevicornis](https://bugguide.net/images/cache/MLV/ZGL/MLVZGLBZHLHRMHYHUHLRUHYH6HZRMLRR7LRRXLBZXLYHNHAZ6HFHILZRNHTH8H8ZHLPZSLAZGLZR6HLRWHTH5H5ZMH.jpg)
Pachybrachis bullatus Fall - AZ, w. TX - 2 spmns ex. silverleaf oak
![Pachybrachis bullatus Fall - Pachybrachis bullatus Pachybrachis bullatus Fall - Pachybrachis bullatus](http://bugguide.net/images/cache/VK8KDKGK2KBQV0PQA06QC0AQD0QKB05QC04QA05Q9KSK2K7KTKIKDK9QBKBQTK9QJ0WQOK7K6K6Q6K0K9KGQ30AQRS.jpg)
Pachybrachis delumbis Fall - w. TX
![Pachybrachis delumbis Fall - Pachybrachis delumbis Pachybrachis delumbis Fall - Pachybrachis delumbis](http://bugguide.net/images/cache/9HF/HEH/9HFHEHYH8HWZ0L6ZSL6ZHL5ZRLGZKLPZIHEZLL6ZLL1HHLPZXH4ZSLBH7HOHWHBZ5LVZWHZR5HBH0L8Z4H6Z4LBZ5LAZ.jpg)
Pachybrachis gracillipes Fall - w. TX - plant asso. not reported
![Pachybrachis gracilipes Fall - Pachybrachis gracilipes Pachybrachis gracilipes Fall - Pachybrachis gracilipes](http://bugguide.net/images/cache/O05/QA0/O05QA04QHSHKOKKK6KKKUKQK9KSKB0LKPKHKT08QT02QC02QA06QRSAQY0AQDKIKBKHKUK4QB06QT0QKWKHKBKBQF04K.jpg)
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](http://bugguide.net/images/cache/CZ7/RJZ/CZ7RJZIRZHZZALQZPLHZCLQZVLQZTLZZ9L7R3Z0RPLQZSH7R3ZRZUL0RNL0RRH5R0HIZVLXZDL7ZULSRCZXRWL7R6LJL.jpg)
Pachybrachis latithorax Clavareau - se. 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](http://bugguide.net/images/cache/QZTLXZDL3L0HQRLH4RZH5RSH7RFZSR6LJLDZRZDZGRRH4RDZZZOLPRYZ0RYZQRLHERCL4RKH2RQHIZ1L0ZAL3LPLYL.jpg)
Pachybrachis mobilis Fall - s. CA to w. TX, CO - plant asso. not reported
![Pachybrachis mobilis Fall - Pachybrachis mobilis Pachybrachis mobilis Fall - Pachybrachis mobilis](http://bugguide.net/images/cache/E0K/090/E0K090S0X03RJK9RHQNRFKWR3KUR401RM0DQJKVR3KFQHQAR70YQN0R0P0S0G0JQLQBRYKARJKNRLQFQ903QLQWR50FQ.jpg)
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](http://bugguide.net/images/cache/R090K0W0TQIQURHQ1RMQJRZQYRW0K00Q3RN0R0U0CRXQBRJKWRQQYR60L0IQCRP0DRP0K0KQYR7Q00E0OQRQCQ80WR.jpg)
Pachybrachis peccans Suffrian - NM-FL-NS-YK - reported from Salix and many other families
=
![Beetle - Pachybrachis peccans Beetle - Pachybrachis peccans](http://bugguide.net/images/cache/AK4KOK5KEK1QA0PQD04QO0VQF0WQDK1QHS5KJ05KY0UQOKMKEK5Q9KZKD0AQTKXKJ09QA0RKWKKK102QRS7KRSVQJ0.jpg)
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](https://bugguide.net/images/cache/WHY/H6H/WHYH6HFHGH9ZQL2ZLLWZML8ZILUZ5LJHWHLRGL6Z7HFHUHAZ5LBZMLZR5LBZ2H3H4LBZ6HLR4L9Z4L2Z4L1ZGL1ZIL.jpg)
Pachybrachis postfasciatus Fall - AZ, TX, KS - brown on pale background, subapical lateral band across the elytra. asso. w/ whitethorn acacia
Pachybrachis spumarius Suffrian - TX-FL-QC-MB, n. TX October (Most commonly coll'ed Pachy in Alabama) - reported from many plant families
![Pachybrachis Pachybrachis](http://bugguide.net/images/cache/OQ503Q40H0HQORIQTRKQNRFKVRM0TQ50WRQQL0M0CQG0FQ3KWRQQORU0R090L0W0TR7QH0N03R0QTRSQJRP000SQJR.jpg)
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](http://bugguide.net/images/cache/5LWZ7L9ZSLFH5H1H5HLR9HCHUHVZ7LHRPHJHNHAZGLAZILVZ7LUZHL4Z0LBZ7L9ZML9Z2H9ZIL1ZEHZRILNZZLNZXL.jpg)
Pachybrachis sonorensis Jacoby - CA to w. TX - Host(s) unknown
![Pachybrachis sonorensis Jacoby - Pachybrachis sonorensis Pachybrachis sonorensis Jacoby - Pachybrachis sonorensis](http://bugguide.net/images/cache/R090K0W0TQIQURSQFRIQJRZQYR0QK00QFR60OR0QZ07QORMQ00N03RHQDQZQWRI0L0N0JQN0Z07QZ0U0Q060ORU0K0.jpg)
Pachybrachis subvittatus LeConte - NM to c. TX (panhandle to s. TX) - variable and sexually dimorphic, males pale, females dark
![Pachybrachis subvittatus J. L. LeConte - Pachybrachis subvittatus Pachybrachis subvittatus J. L. LeConte - Pachybrachis subvittatus](http://bugguide.net/images/cache/5LW/Z7L/5LWZ7L9ZSLFH5HDHIHJH9HZR6HLR4LUZ9HRREH1Z9HZR7LWZZLVHEHZR5LYHWHYHXL4Z7LBZML8Z4H8ZZL4ZGHGZXL.jpg)
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](https://bugguide.net/images/cache/NLJ/L2L/NLJL2L3LDLSRKH6RZH6RFZQROZKRZHGRTLXZBLKZEL3LNLQRCZ7RWLKR3ZIRCZJLVL0ZCL7Z1L4RZH5RZH8RBL7ZZHMZ.jpg)
Pachybrachis turbidus LeConte - Great Plains to s. TX - on Oaks - one of the most common spp. in Texas
Pachybrachis tridens (F. E. Melsheimer) - TX-FL-QC-MB - hosts on poison ivy
![Pachybrachis tridens (F. E. Melsheimer) - Pachybrachis tridens Pachybrachis tridens (F. E. Melsheimer) - Pachybrachis tridens](http://bugguide.net/images/cache/BKG/KTK/BKGKTK8KPKVQB0GQD08QC0GQA04QUKSKDK8K1KLK102QO0SK6KLKO01QHSAQD0GQEKQKNKZKPKLKA0LKB0SKCK7KOKNQ.jpg)
Pachybrachis sp. - Val Verde Co.
![Pachybrachis Pachybrachis](https://bugguide.net/images/cache/7RC/ZKR/7RCZKROZPRPL7ZULHZ2LRZELRZ9LKRJZJLEL3LULIRDZ0RCZMRTZ5ROL4RDLSZ6LYLPLYL6LSZOL2RZHPRRH4RDZ0RNL.jpg)
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](http://bugguide.net/images/cache/NLJ/L2L/NLJL2L3LDLSRKH2RLHQRDZSRFZXRWLIRULJLULMRFZJL6LFL9LHZTZLZPL3LPLHZFZHZYZIRCZGRCL5ROL2ROLKZTL8R.jpg)
Pachybrachis sp. (EGR 2) - Sabal Palm Grove
![Pachybrachis sp. (EGR 2) - Pachybrachis Pachybrachis sp. (EGR 2) - Pachybrachis](https://bugguide.net/images/cache/UL3/LPL/UL3LPLJLTLKRSH7RFZ7RSHPRRHXZBLERKH6RALKZQHXZDLGRSHSZSHIZOLSZCL4RKH5RTLXZQHIRWLYLYZKR6LYLWL.jpg)
Pachybrachis sp. (EGR 6) - Sabal Palm Grove, on Texas ebony.
Numbered Morpho Species
Pachybrachis sp. (EGR 19) - w. to c. Texas
![Pachybrachis sp. (EGR 19) - Pachybrachis Pachybrachis sp. (EGR 19) - Pachybrachis](https://bugguide.net/images/cache/P0Q/0U0/P0Q0U00070FRYKNRHQARXQJR0QS0U03QRQDQHQAR7Q3RN0R07Q3R60K0MQ1RYKTR20ORXQCRE0Z020JR90JRSQ9R50.jpg)
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](http://bugguide.net/images/cache/80TQX0DQ909RMQDRQQORJK9RZQTQE0JRMQFRQQDRQQCRSQYRW0DRKQR0E0CRE0JRSQYRP0R07QJR7QTRQQFRQQL0U0.jpg)
Pachybrachis sp. (EGR 141) - Brazos Co.
?
Pachybrachis (TOR 7) - w. Texas
![Pachybrachis (TOR sp. #7) - Pachybrachis Pachybrachis (TOR sp. #7) - Pachybrachis](https://bugguide.net/images/cache/IRO/ZSR/IROZSRCZ2R2LIZALKZELQZCL7ZCLKZEL0R3ZKR6LZZULFLFZFLNLXRFZXRPLJLFZMRKHQZQHQZBLXZ1L0ZLH2RRH0ZRH.jpg)
Pachybrachis sp. - c. to n. Texas
![Pachybrachis from North Central Texas - Pachybrachis Pachybrachis from North Central Texas - Pachybrachis](https://bugguide.net/images/cache/DZX/RYZ/DZXRYZMRLHLZBL3LALFLALIZOL7ZRH0ZCLHZWL7RSHGRKHXZALKZBLXZKHER1LKZBLMZ1LXZBLERYZJLCZIRJZIR3ZFL.jpg)
Species Recorded From Adjacent States
Pachybrachis cephalicus Fall - mostly coastal e. US states to LA
Pachybrachys fuscipes Fall - AZ-NM
![Pachybrachis fuscipes Fall - Pachybrachis fuscipes Pachybrachis fuscipes Fall - Pachybrachis fuscipes](http://bugguide.net/images/cache/3RS/QOR/3RSQORKQ1RE03QG0JQG0YQI0L060FRHQARLQJRLQ3QZQ9RZQYQM0DQRQWRKQTRSQYR0QZ07QBR50K060K07QAR50AR.jpg)
Pachybrachis deceptor Riley & Barney - no TX record, but occurs in OK, AR, LA, e. N. Amer.
![Pachybrachis deceptor Riley & Barney - Pachybrachis deceptor Pachybrachis deceptor Riley & Barney - Pachybrachis deceptor](https://bugguide.net/images/cache/UH3/HPH/UH3HPHJH5HNZSL6ZQL2ZHL9Z5LEZGHDHKL1ZKLVHPHVZGLLRWHZR7LWZUHAZNHBZ8LHRPH3H4LLR9HUZEH3HMLWZGL.jpg)
Pachybrachis subfasciatus (LeConte) - no TX records, but known from OK, AR, LA, e. N. Amer. - Recorded from Juglans, Ulmus
Pachybrachis trinotatus (Melsheimer) - e. N. Amer. to OK - Baptisia (Fabaceae)
![Pachybrachis trinotatus (Melsheimer) - Pachybrachis trinotatus - female Pachybrachis trinotatus (Melsheimer) - Pachybrachis trinotatus - female](https://bugguide.net/images/cache/ZHP/R0H/ZHPR0H2RCZXZELHZDLHZELYLPLJLNL3LTZ0RCZSRYZPR1L0ZBL3LYZJLCZFLPLLZUL3LOZSROZ5ROL8RQHGRCZYLNLIZ.jpg)
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): 117–131. (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. 2017a. 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. 2017b. Definition and revision of the spumarius species-group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae). The Coleopterists Bulletin 71(3): 449-460. (BioOne)
Barney, R.J. 2018a. Definition and revision of the atomarius species-group of North American Pachybrachis Chevrolat
(Coleoptera: Chrysomelidae: Cryptocephalinae), including descriptions
of nine new species. The Coleopterists Bulletin 72(1): 9-74. (BioOne)
Barney, R.J. 2018b. Definition and revision of the pectoralis species-group of eastern North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae). The Coleopterists Bulletin 72(3): 471-499. (BioOne)
Barney, R.J. 2019. Key to all sixty-four species of Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae) in the eastern USA. The Coleopterists Bulletin, 73(1): 85-96. (BioOne)
Barney, R.J., L. LeSage, and K. Savard. 2013. Pachybrachis (Coleoptera, Chrysomelidae, Cryptocephalinae) of eastern Canada. ZooKeys 332: 95–175. (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: 291–486 (Full Text)
LeConte, J.L. 1880. Short studies of North American Coleoptera. Transactions of the American Entomological Society 8: 163–218
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): 25–59. (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.
11 April 2018 © Mike
Quinn / entomike@gmail.com
/ Texas
Entomology / Texas Beetle Resources / Photo Techniques