Papers by Lourdes Chamorro
This study provides an illustrated synoptic key and comparative morphology to the 38 known larvae... more This study provides an illustrated synoptic key and comparative morphology to the 38 known larvae of dryophthorine genera representing seven subtribes in four of the five tribes: Cactophagus LeConte, Cosmopolites Chevrolat, Cyrtotrachelus Schoenherr, Diathetes Pascoe, Diocalandra Faust, Dryophthoroides Roelofs, Dryophthorus Germar, Dynamis Chevrolat, Eucalandra Faust, Eugnoristus Schoenherr, Foveolus Vaurie, Mesocordylus Lacordaire, Metamasius Horn, Metamasius (=Paramasius Kuschel), Myocalandra Faust, Nassophasis Waterhouse, Nephius Pascoe, Odoiporus Chevrolat, Phacecorynes Schoenherr, Polytus Faust, Poteriophorus Schoenherr, Rhabdoscelus Marshall, Rhinostomus Rafinesque, Rhodobaenus LeConte, Rhynchophorus Herbst, Scyphophorus Schoenherr, Sipalinus Marshall, Sitophilus Schoenherr, Sparganobasis Marshall, Sphenophorus Schoenherr, Stenommatus Wollaston, Temnoschoita Chevrolat, Trigonotarsus Guerin-Meneville, Trochorhopalus Kirsch, Tryphetus Faust, Xerodermus Lacordaire, and Yuccaborus LeConte. Only Prodioctes Pascoe was not included due to lack of specimens to examine. Seven genera are reported here for the first time. Detailed line drawings of the mouthparts of 37 genera are provided. The synoptic key is a multi-entry key, different from a traditional, single entry dichotomous key, which allows the user to identify dryophthorine larvae using any combination of characters (couplets). A total of 52 characters are included. This study provides support for the retention of Stromboscerini in the subfamily.
The agave snout weevil (AGW) or sisal weevil, Scyphophorus acu- punctatus Gyllenhal is here repor... more The agave snout weevil (AGW) or sisal weevil, Scyphophorus acu- punctatus Gyllenhal is here reported for the first time in St. Croix, U.S. Virgin Islands (USVI) where it threatens Agave eggersiana Trel., a USVI endemic and endangered century-plant. We provide molecular, morphological, and behavioral characters to suc- cessfully distinguish the two known Scyphophorus species at all developmental stages. We identified seven new larval characters on themandibles and characters relating to the chaetotaxy of the labrum and labio-maxillary complex as well as new, putatively infor- mative characters for weevil systematics: chitinized arm of mentum (postlabial strut or postlabial bracon) and the presence of 4 ventral malar setae, instead of 5. In the pupae, the difference in number and placement of rostral setaewere also found to be diagnostic. We analyzed two genes, mtCO1 and EF1a, to confirm the identity of the immatures. Phylogenetic analysis of both genes separately and together suggests a clear pattern of substantial phylogeographic structure with specimens clustering by geographic location and this pattern strongly suggests the presence of cryptic species or allopatrically di- verged populations. We provide management recommendations for the protection of Agave eggersiana against the threat posed byASW.We also report, for the first time, the presence of Sphenophorus cubensis (Buchanan) in St. Croix and Scyphophorus yuccae Horn in Panama on Hesperoyucca whipplei (Torr.) Trel. (Asparagaceae: Agavoideae).
Although some species of Cryptocephalinae (Coleoptera: Chrysomelidae) have been documented with a... more Although some species of Cryptocephalinae (Coleoptera: Chrysomelidae) have been documented with ants (Hymenoptera: Formicidae) for almost 200 years, information on this association is fragmentary. This contribution synthesizes extant literature and analysizes the data for biological patterns. Myrmecophily is more common in the tribe Clytrini than in Cryptocephalini, but not documented for Fulcidacini or the closely-related Lamprosomatinae. Myrmecophilous cryptocephalines (34 species in 14 genera) primarily live among formicine and myrmecines ants as hosts. These two ant lineages are putative sister-groups, with their root-node dated to between 77–90 mya. In the New World tropics, the relatively recent radiation of ants from moist forests to more xeric ecosystems might have propelled the association of cryptocephalines and ant nests. Literature records suggest that the defensive behavioral profile or chemical profile (or both) of these ants has been exploited by cryptocephalines. Another pattern appears to be that specialized natural enemies, especially parasitoid Hymenoptera, exploit cryptocephaline beetles inside the ant nests. With the extant data at hand, based on the minimum age of a fossil larva dated to 45 mya, we can infer that the
Illustrated guide to the emerald ash borer Agrilus planipennis Fairmaire and related species (col... more Illustrated guide to the emerald ash borer Agrilus planipennis Fairmaire and related species (coleoptera, buprestidae) m. lourdes chamorro, eduard Jendek, robert a. haack, toby r. petrice, norman e. Woodley, alexander s. Konstantinov, mark g. Volkovitsh, Xing-Ke Yang, Vasily V. grebennikov, steven W. lingafelter Sofia-Moscow 2015 Illustrated guIde to the emerald ash borer Agrilus plAnipennis FaIrmaIre and related specIes (coleoptera, buprestIdae) 3 usDA Forest service, northern research station, 3101 Technology Blvd., suite F, lansing, Mi, usA 4 laboratory of insect systematics, Zoological institute, russian Academy of sciences, universitetskaya nab. 1, st. petersburg, 199034, russia 5 Key laboratory of Zoological systematics and evolution, institute of Zoology, Chinese Academy of sciences, ISBN 978-954-642-778-6 (paperback) ISBN 978-954-642-779-3 (e-book) © pensoFt publishers all rights reserved. no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the copyright owner. printed in bulgaria, august 2015 author contributions: MlC, sWl, VVg, XKY, AsK, designed and planned the research; MlC*, eJ*, MgV performed the research; MlC, eJ analyzed the data; contributions were as follows: MlC, eJ are primarily responsible for delimitation of relatives (sans A. sinensis group eJ); MlC is responsible for group
Two new species of Cryptocephalus Geoffroy (Coleoptera: Chrysomelidae) are described and illustra... more Two new species of Cryptocephalus Geoffroy (Coleoptera: Chrysomelidae) are described and illustrated from fossil resin: Cryptocephalus groehni sp. nov (Baltic amber) and Cryptocephalus kheelorum sp. nov. (Dominican amber). These are the first described species of Cryptocephalinae from fossil resin. These new fossil species may serve with taxonomic certainty as calibration points in divergence dating estimates.
This study provides the most detailed description of the immature stages of Agrilus planipennis F... more This study provides the most detailed description of the immature stages of Agrilus planipennis Fairmaire to date and illustrates suites of larval characters useful in distinguishing among Agrilus Curtis species and instars. Immature stages of eight species of Agrilus were examined and imaged using light and scanning electron microscopy. For A. planipennis all preimaginal stages (egg, instars I-IV, prepupa and pupa) were described. A combination of 14 character states were identified that serve to identify larvae of A. planipennis. Our results support the segregation of Agrilus larvae into two informal assemblages based on characters of the mouthparts, prothorax, and abdomen: the A. viridis and A. ater assemblages, with A. planipennis being more similar to the former. Additional evidence is provided in favor of excluding A. planipennis from the subgenus Uragrilus. Citation: Chamorro ML, Volkovitsh MG, Poland TM, Haack RA, Lingafelter SW (2012) Preimaginal Stages of the Emerald Ash Borer, Agrilus planipennis Fairmaire (Coleoptera: Buprestidae): An Invasive Pest on Ash Trees (Fraxinus). PLoS ONE 7(3): e33185.
Citation: Chamorro ML, Konstantinov AS (2011) Cachiporrini, a remarkable new tribe of Lamprosomat... more Citation: Chamorro ML, Konstantinov AS (2011) Cachiporrini, a remarkable new tribe of Lamprosomatinae (Coleoptera, Chrysomelidae) from South America. ZooKeys 78 : 43 -59 . doi: 10.3897/zookeys.78.980
Zookeys, 2009
Citation: Chamorro-Lacayo ML, Konstantinov AS (2009) Synopsis of warty leaf beetle genera of the ... more Citation: Chamorro-Lacayo ML, Konstantinov AS (2009) Synopsis of warty leaf beetle genera of the World (Coleoptera, Chrysomelidae, Cryptocephalinae, Chlamisini). ZooKeys 8: 63-88.
Naturwissenschaften, 2009
Complex ethological adaptations and intraspecific interactions leave few fossil traces. We docume... more Complex ethological adaptations and intraspecific interactions leave few fossil traces. We document three Dominican (20 million years old [myo]) and Baltic (45 myo) amber fossils that exhibit firm evidence of highly integrated interactions between mothers and offspring in the diverse camptosomate lineage of beetles (Chrysomelidae, leaf beetles). As in contemporary species, these hard cases were initially constructed by mothers, then inherited and retained by offspring, which then elaborate this protective domicile with an unusual but economical building material, their feces. The three fossils are classified in the Subfamily Cryptocephalinae; two are classified in the tribe Chlamisini based on morphological evidence-the flattened head lacking a sharp keel and long legs with simple recurved untoothed claws. These diagnostic features are not clearly visible in the third specimen to permit more refined identification. These fossils provide more precise paleontological dating of tribal nodes within the cryptocephaline radiation of leaf beetles. These fossils are the first and earliest evidence of mother-offspring interaction, building behavior, and fecal recycling in Camptosomata beetles and of inheritance of architectural structures in beetles.
Coleopterists Bulletin, 2009
Nicaltica new genus and new species (N. selvanegra Konstantinov, Chamorro-Lacayo and Savini) from... more Nicaltica new genus and new species (N. selvanegra Konstantinov, Chamorro-Lacayo and Savini) from moss habitat in Nicaragua are described and illustrated. Nicaltica is compared to Kiskeya Konstantinov and Chamorro-Lacayo, Monotalla Bechyné, and Normaltica Konstantinov.
The total number of caddisfly species in Nicaragua is 176, in 13 Families and 43 Genera. The numb... more The total number of caddisfly species in Nicaragua is 176, in 13 Families and 43 Genera. The number of caddisfly species recorded for Nicaragua has more than tripled since the first checklist in 1988, from 54 to 176 and almost doubled since 1999 despite the limited number of collections undertaken in the country in the last 18 years. This list adds 56 new country records.
Coleopterists Bulletin, 2006
Kiskeya new genus and two new species (K. baorucae and K. neibae), from the Dominican Republic ar... more Kiskeya new genus and two new species (K. baorucae and K. neibae), from the Dominican Republic are described and illustrated. Kiskeya is compared to Monotalla Bechyne, Normaltica Konstantinov, and Clavicornaltica Scherer. Geographic ranges in which Greater Antillean endemics have closest relatives in the Old World are discussed.
Coleopterists Bulletin, 2006
The female genitalia of New World Cryptocephalini was studied and illustrated based on representa... more The female genitalia of New World Cryptocephalini was studied and illustrated based on representatives of 11 of the 13 genera of the tribe. It was found that female genitalia contain pleurites IX, a rare and apparently primitive feature among leaf beetles. In other features cryptocephaline female genitalia are simpler than genitalia of other leaf beetles in having a poorly sclerotized sternite VIII and lacking the tignum. It is also hypothesized that the vagina is formed by sternites IX (dorsally) and VIII (ventrally), and that sclerotized plate of sternite IX can be homologized with vaginal palpi of flea beetles. A set of characters of diagnostic and of possible phylogenetic value was found. In general, Cryptocephalina and Monachulina bear the greatest affinity in overall morphology of the female genitalia, with Pachybrachina possessing a different set of unique morphological states. Of particular diagnostic and phylogenetic value at the subtribal level, as revealed by this study, are the shape and degree of sclerotization of tergite VIII, tergite IX, and sternite VIII.
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Papers by Lourdes Chamorro