The Pholcidae are one of the most diverse and common web-forming families worldwide, and the West Indian fauna may exhibit high island endemism (Huber 2000). To our knowledge, Kerzhner's synonyms did not include the examination of the type material of that species, which has been lost for years (Duvallet to Santiago-Blay, personal communication8). The specimens were captured at the bottom of trees, between buttresses, on webs of the spiders Modisimus sp.
We hope that this work will stimulate further research into this fascinating group of the Nabidae. This is the National Insect Collection of the former Union of Soviet Socialist Republics (USSR). Unfortunately, curators of the Musee du Biterrois in France and colleagues who know that collection believe that all types of material from A.
Limitations in the amount of tilting possible with the microscope and our concern for the physical integrity of the specimens guided our decisions not to pursue some viewpoints. Features of reproductive organs are often considered important in systematic zoology (e.g., for Hemiptera, Faúndez and Carvajal 2014, Wygodzinsky 1952). For example, in boatmen (Hemiptera: Delphacidae) significant differences in parameters between morphs of the same species have been reported (Galolo et al. 2011) and in water boatmen (Hemiptera: Corixidae), significant differences have been found between individuals of the same species. population (Savage and Feakes 1991).
In that specimen, the genital capsule was carefully removed from the rest of the body and placed in dilute, approximately 10%, potassium hydroxide, KOH9 at room temperature. In examining the holotype and the totopypic adult, Kerzhner (2007) indicated that their gender is male, but the gender of the holotype cannot be verified due to the damage of its terminalia. Inexplicably, the color pattern of the antennae and femora (used to distinguish species in this genus) of the above specimens does not match their description in previous works and likewise the length ratios of antennomeres II to IV of the adults do not match those reported by Kerzhner (2007).
In the late 1960s, there was an exchange of the entire MCZ Heteroptera collection for a synoptic collection of identified Heteroptera provided by the AMNH (Schuh to Santiago-Blay, personal communication). Due to differences from what we propose represent biologically important color patterns of the antenna and the femora, as well as the length ratios of the antennomeres of A. Based on Carayon's comments and our own reevaluation of the original description, we propose the reinstatement of the original designation of Lopez-Moncet until additional specimens are examined.
Arachnocoris trinitatis resembles most other continental species in having an antennanomere I slightly longer than the length of the head, a dark overall color, and a white transverse band behind the celestial constriction. The color patterns of the antennae and femurs are diagnostic of the West Indian species and may have evolved to mimic their specific spider hosts (Mercado and Santiago-Blay 2015). Modisimus spiders have significant endemism at the island species level, especially on some islands such as Hispaniola (Huber et al. 2010).
We hope that this paper, like Mercado and Santiago-Blay (2015), will raise awareness of the complex ecological interactions that occur on spider webs (e.g., Wheeler 1928).
Arachnocoris albomaculatus Scott, 1881
An immature individual of an undetermined species of Arachnocoris is depicted by Mesabolivar sai Huber, 2015b (Huber 2015a, http://www.pholcidae.de/alive_pholcids/mesabolivar6a_l.jpg); last accessed 29 May 2016).
Arachnocoris berytoides (Uhler, 1894)
Arachnocoris darlingtoni Santiago-Blay and Mercado 2016, this publication
Arachnocoris dispar Scott, 1881
Arachnocoris eberhardi Kerzhner, 1990
Arachnocoris karukerae Lopez-Moncet, 1990
Arachnocoris myersi China, 1946
Arachnocoris panamensis (Distant, 1893)
Arachnocoris portoricensis Mercado, 2016, this publication
Arachnocoris setosus Kerzhner, 1990
Arachnocoris simoni Bergroth, 1899
Arachnocoris thesauri Lopez-Moncet, 1997
Arachnocoris torquatus Bergroth, 1914
Arachnocoris trinitatis Bergroth, 1916
Arachnocoris varius Lopez-Moncet, 1997
Derek Kohler (Lake Erie College of Osteopathic Medicine, Erie, Pennsylvania, USA) assisted JASB in using the linear measurement function within the Scandium (Olympus, Lakewood, Colorado, USA) at the NMNH Imaging-Scanning Electron Microscopy Laboratory. Efraín Tejada (Office of Education and Outreach, NMNH) facilitated the use of the Olympus DSX100 for co-author Santiago-Bay. Stephen Thurston (Division of Invertebrate Zoology, AMNH) kindly trained the second author (JASB) in the use of the imaging equipment.
Timothy Rose (Department of Mineral Sciences, NMNH) assisted with low-vacuum scanning electron microscopy of metal-free Arachnocoris specimens. Valérie Lemaître (Natural History Museum, England, UK) provided many stable links to older references and a final, extremely valuable reading of the manuscript. A reclassification of the families of the Cymicoids (Heteroptera) with the description of two new spider beetles.
XV – A new species of the genus Arachnocoris Scott with a key to the known species of the genus (Hemiptera, Nabidae). A case of human bite by Nabis americoferus (Heteroptera: Nabidae), with comments on bites by other species of the genus Nabis in the United States. Distributional notes on some Neotropical insects of the family Nabidae, with description of a new species.
Link to the main part of the book, https://books.google.com/books?id=dDzqU4zO3vgC&pg=PA185&lpg=PA185&dq=macropter ous+insects+that+cannot+fly&source=bl&ots=lpZtMuGdqD&sig=FQy7Z6n xSNWfSfxnxSNWfSf6nxsnwffxvnxvnxvn xvnfxvn = 0ahUKEwit_IXWu_3MAhXICD4KHVDhAr8Q6AEIHTAA #v=. Cytogenetic characterization of the Trinidad endemic, Arachnocoris trinitatus Bergroth: the first data for the tribe Arachnocorini (Heteroptera: Cimicomorpha: Nabidae). http://www.entoflorachne.com/araignee/andre_lopez.html and http://www.entoflorachne.com/. News about insects considered spiders and their hosts. http://milichiidae.info/sites/milichiidae.info/files/Lopez%20A_1984.pdf. Multiple model mimicry and feeding behavior of the cobweb-dwelling ladybug, Arachnocoris berytoides Uhler (Hemiptera: Nabidae), from Puerto Rico.
Plant bugs of the world (Insecta, Heteroptera, Miridae): systematic catalogue, distributions, host list and bibliography.
