Research Article |
Corresponding author: Leonel Martinez ( leonelmarbio@gmail.com ) Academic editor: Ingi Agnarsson
© 2017 Leonel Martinez, Eduardo Villarreal, Neis Martinez.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Martinez L, Villarreal E, Martinez N (2017) A new species of the genus Parachemmis Chickering, 1937 from Colombia (Araneae, Corinnidae, Corinninae). ZooKeys 679: 29-35. https://doi.org/10.3897/zookeys.679.12421
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The spider genus Parachemmis Chickering, 1937 (Araneae: Corinnidae: Corinninae) is reported from Colombia for the first time. Parachemmis julioblancoi sp. n. Martinez-G & Villarreal is described and illustrated from the Sierra Nevada de Santa Marta, Magdalena department. The exclusive morphology of the short and apically truncated retrolateral tibial apophysis and club-like tegular laminar process of the male palp indicates that the specimens described herein belong to a new species of Parachemmis. A map of the distribution of species in the genus is included.
Dionycha, distribution, Neotropical Region, Sierra Nevada de Santa Marta, taxonomy
The family Corinnidae Karsch, 1880 currently includes 754 species in 67 genera (
The species of the genus Parachemmis can be recognized by having serrula in the lateral edge of the endites, subovate carapace, abdominal traqueal tubercule, male palp with retrolateral tibial apophysis (RTA) entire and by the presence of an articulated ventral tibial apophysis (VTA), as well as by the presence of a prolateral laminar process (PLP) arising from the tegulum. In females, the epigyne have two copulatory openings, the copulatory ducts are large and the secondary spermathecae are poorly-developed. On the other hand, specimens of the genus also have anterior eye row strongly procurved, posterior eye row lesser procurved, and anterior median eyes clearly larger than the others, in addition to having the sternum with two external anterolateral excavations; the latter is also characteristic of the genera Stethorrhagus Simon, 1896 and Tupirinna Bonaldo, 2000 (
In this paper, both sexes of a new species of Parachemmis Chickering, 1937 from Colombia is described and illustrated: P. julioblancoi sp. n. from the Sierra Nevada de Santa Marta (SNSM), Magdalena, Colombia. Finally, a map of the distribution of the genus is included.
The specimens examined are deposited in the Arachnological Collection of the Instituto de Ciencias Naturales of the Universidad Nacional de Colombia (ICN-Ar, Eduardo Flórez), Bogotá. The multifocal photographs of the copulatory structures and the measurements of the specimens were taken with a Leica MC–120 HD digital camera attached to a Leica S8AP0A stereomicroscope, the photographs were united by the image stacking software Leica Application Suite version 4.1.0. The illustrations of the palp and epigyne were made with a light camera attached to a Leica M125 stereomicroscope and the software Inkscape version 0.91.
Abbreviations used in the text and figures are:
AER anterior eye row
ALE anterior lateral eye
AME anterior median eye
c conductor
cd copulatory duct
co copulatory opening
d dorsal
e embolus
fd fertilization duct
m meters above mean sea level
p prolateral
PER posterior eye row
PLE posterior lateral eye
PLP prolateral laminar process
PME posterior median eye
po epigynal pocket
pr proximal
r retrolateral
RTA retrolateral tibial apophysis
sp spermathecal
Spe spermophore
ST I primary spermatheca
ST II secondary spermatheca
v ventral
VTA ventral tibial apophysis
The map was prepared in the Geographic Information System QGIS “Las Palmas” (version 2.18.0, http://www.qgis.org/es/site/). The measurements are given in millimeters.
Parachemmis Chickering, 1937:38 (type species: Parachemmis fuscus Chickering, 1937)
See
Male in ICN-Ar, from Colombia, Magdalena, Sierra Nevada de Santa Marta, San Pedro de la Sierra, 2104 m, 10.895138°N, 73.999611°W, 28 Mar.2017, L. Martínez (ICN-Ar 8420). Paratypes. 1♀, same data (ICN-Ar 8421); 2♂ (ICN-Ar 8422- 8423) and 4♀ (ICN-Ar 8424) from same locality; 1 ♂ and 1♀ (ICN-Ar 8327- 8328) same locality. 6 May 2016.
The specific epithet is a patronym in honor of Dr. Julio Enrique Blanco (Founder of the Universidad del Atlántico), for his many contributions to art and education in Colombia.
Males of P. julioblancoi sp. n. can be distinguished from all remaining species of the genus by the large, club-like PLP, which extends towards the middle and distal part of the tegulum, wide conductor that ends next to embolus, a short, apically truncated RTA and a wide VTA (Fig.
Male (holotype, ICN–Ar 8327). Total length: 7.77. Carapace brown, 3.20 long, 2.65 wide, 1.15 high. Eyes AER 1.18 wide, PER 1.32 wide. AME 0.25, PME 0.17, ALE 0.20, PLE 0.21. (Fig.
Female. (paratype, ICN–Ar 8328). Total length: 11.00. Carapace brown with yellowish posterior borders, 4.72 long, 3.84 wide, 1.97 high. Eyes AER 1.35 wide, PER 1.56 wide. AME 0.29, PME 0.24, ALE 0.27, PLE 0.19 (Fig.
The type material was collected manually, on leaf litter, in a conserved high mountain wet forest ecosystem.
Only known from the type locality (Fig.
LM and EV collected, and identified the material. LM was responsible for species description. LM, NM and EV reviewed the literature, drafted the manuscript, and contributed to the critical discussion. EV and LM prepared the images. All authors read and approved the final manuscript.
P. julioblancoi sp. n., holotype male (ICN–Ar 8420) A left male palp, prolateral view B same, ventral view C same, retrolateral view; paratype female (ICN–Ar 8421) D epigyne, dorsal view E same, ventral view. Abbreviations: c = conductor; cd = copulatory duct; co = copulatory opening; e = embolus; fd = fertilization duct; PLP = prolateral laminar process; po = epigynal; RTA = retrolateral tibial apophysis; sp = spermathecae; Spe = spermophore; VTA = ventral tibial apophysis. Scale bars 1 mm (A–C), 0.5 mm (D–E).
Thanks to Eduardo Flórez-Daza (ICN-Ar) for allowing us to examine the material here described, to Universidad del Atlántico for financial support. To Willian Galvis (LAM-UN, Universidad Nacional de Colombia) and to Dr Alexandre Bonaldo (Museu Paraense Emílio Goeldi) for their support and comments on the manuscript; to the Neoptera team (Universidad del Atlántico) for their help and support, to Conchita Pinzón for help with the illustrations, and to the Laboratorio de Ecología y Entomología (LEE), Departamento de Biología, Facultad de Ciencias, Universidad del Atlántico, for the assistance in photographing the material.