Exocelina bifida

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This page should be cited as follows (rationale):
Shaverdo H, Surbakti S, Hendrich L, Balke M (2012) Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae). ZooKeys 250 : 1–76, doi. Versioned wiki page: 2013-01-02, version 29880, https://species-id.net/w/index.php?title=Exocelina_bifida&oldid=29880 , contributors (alphabetical order): Michael Balke, Pensoft Publishers.

Citation formats to copy and paste

BibTeX:

@article{Shaverdo2012ZooKeys250,
author = {Shaverdo, Helena V. AND Surbakti, Suriani AND Hendrich, Lars AND Balke, Michael},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae)},
year = {2012},
volume = {250},
issue = {},
pages = {1--76},
doi = {10.3897/zookeys.250.3715},
url = {http://www.pensoft.net/journals/zookeys/article/3715/abstract},
note = {Versioned wiki page: 2013-01-02, version 29880, https://species-id.net/w/index.php?title=Exocelina_bifida&oldid=29880 , contributors (alphabetical order): Michael Balke, Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae)
A1 - Shaverdo H
A1 - Surbakti S
A1 - Hendrich L
A1 - Balke M
Y1 - 2012
JF - ZooKeys
JA -
VL - 250
IS -
UR - http://dx.doi.org/10.3897/zookeys.250.3715
SP - 1
EP - 76
PB - Pensoft Publishers
M1 - Versioned wiki page: 2013-01-02, version 29880, https://species-id.net/w/index.php?title=Exocelina_bifida&oldid=29880 , contributors (alphabetical order): Michael Balke, Pensoft Publishers.

M3 - doi:10.3897/zookeys.250.3715

Wikipedia/ Citizendium:

<ref name="Shaverdo2012ZooKeys250">{{Citation
| author = Shaverdo H, Surbakti S, Hendrich L, Balke M
| title = Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae)
| journal = ZooKeys
| year = 2012
| volume = 250
| issue =
| pages = 1--76
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.250.3715
| url = http://www.pensoft.net/journals/zookeys/article/3715/abstract
| pmc =
| accessdate = 2024-12-13

}} Versioned wiki page: 2013-01-02, version 29880, https://species-id.net/w/index.php?title=Exocelina_bifida&oldid=29880 , contributors (alphabetical order): Michael Balke, Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Coleoptera
Familia: Dytiscidae
Genus: Exocelina

Name

Exocelina bifida Shaverdo, Hendrich & Balke sp. n.Wikispecies linkZooBank linkPensoft Profile

Type locality

Indonesia: Papua Province: Jayawijaya Regency, Borme, Taramlu, approximately 04°24'S, 140°25'E.

Type material

Holotype: male “IRIAN JAYA: Borme Tarmlu 1500m 6.9.1993”, “ca. 140°25'E, 04°24'S leg. M. Balke (4-6)” (NHMW). Paratypes: 6 males, 3 females with the same label as the holotype, one of the females additionally with a green label “DNA M.Balke 3256” (NHMW). 3 males “IRIAN JAYA: Borme Tarmlu 1500m 6.9.1993”, “ca. 140°25'E, 04°24'S leg. M. Balke (4)” (NHMW).

Diagnosis

Beetle small, dark brown to piceous, shiny; pronotum without lateral bead; male antennomeres simple; male protarsomere 4 with large, thick, strongly curved anterolateral hook; median lobe with strong submedian constriction and apex bifid: with small dorsal extension; paramere with notch on dorsal side and subdistal part elongate, with dense, long, thin setae. The species is well recognizable by its characteristic male genitalia.

Description

Size and shape: Beetle small (TL-H 3.5–3.75 mm, TL 3.9–4.25 mm, MW 1.8–2.0 mm), with oblong-oval habitus, broadest at elytral middle. Coloration: Head reddish-brown to piceous, paler anteriorly; pronotum dark brown to piceous, with paler sides, yellowish in anterior angles; elytra dark brown to piceous, with reddish-brown sutural bands; head appendages yellow to yellowish-red, legs distally darker (Fig. 41).
Surface sculpture: Head with dense punctation (spaces between punctures 1–3 times size of punctures), evidently finer and sparser anteriorly; diameter of punctures smaller than diameter of cells of microreticulation. Pronotum with much finer and sparser punctation than on head. Elytra with very sparse and fine punctation, almost invisible. Head, pronotum, and elytra with weakly impressed microreticulation, dorsal surface, thus, shiny. Head with microreticulation stronger. Metaventrite and metacoxa distinctly microreticulate, metacoxal plates with longitudinal strioles and transverse wrinkles. Abdominal sternites with distinct microreticulation, strioles, and fine sparse punctation, coarser and denser on two last abdominal sternites.
Structures: Pronotum without lateral bead. Base of prosternum and neck of prosternal process with distinct ridge, anteriorly less rounded, smooth, with small anterolateral extensions. Blade of prosternal process lanceolate, relatively broad, slightly convex, with distinct bead and few setae; neck and blade of prosternal process evenly jointed. Abdominal sternite 7 broadly rounded apically.
Male: Antenna simple (Fig. 15A). Protarsomere 4 with large, thick, strongly curved anterolateral hook. Protarsomere 5 ventrally with anterior row of 14 short setae and posterior row of 3 short setae (Fig. 15B). Abdominal sternite 7 with 6–10 lateral striae on each side. Median lobe with strong submedian constriction and apex bifid: with small dorsal extension (Figs 15C, D). Paramere with notch on dorsal side and subdistal part elongate, with dense, long, thin setae (Fig. 15E).
Female: Without evident differences in external morphology from male, except for abdominal sternite 7 without striae.

Distribution

Indonesia: Papua Province, Jayawijaya Regency. This species is known only from the type locality (Fig. 50).

Etymology

The name refers to the bifid distalodorsal part of the median lobe. The name is an adjective in the nominative singular.

Original Description

  • Shaverdo, H; Surbakti, S; Hendrich, L; Balke, M; 2012: Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae) ZooKeys, 250: 1-76. doi

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