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. 2020 Aug 20:962:123-137.
doi: 10.3897/zookeys.962.51520. eCollection 2020.

A new species of Nephus (Nephus) (Coleoptera, Coccinellidae) described from Reunion Island

Affiliations

A new species of Nephus (Nephus) (Coleoptera, Coccinellidae) described from Reunion Island

Alexandra Magro et al. Zookeys. .

Abstract

We report here a new species belonging to Nephus (Nephus) Mulsant. Nephus (Nephus) apoloniasp. nov. was collected in the Reunion Island (Mascarene Archipelago, Indian Ocean). We describe this new species and redescribe and illustrate three other Nephus species already known from Reunion: Nephus (Nephus) oblongosignatus Mulsant, 1850, Nephus (Geminosipho) reunioni (Fürsch, 1974) and Nephus (Nephus) voeltzkowi Weise, 1910. Furthermore, we present a phylogenetic tree for these four species and calculate the genetic distances between them, using high-throughput DNA sequencing of the mitochondrial genome. The similar external morphology of N. apolonia sp. nov. and N. voeltzkowi very probably explains why individuals from the first species have been mistakenly identified as the latter and were not recognized as different until now. Other than external and genitalia traits, the present study provides molecular evidence confirming these are indeed two different species.

Keywords: Coccinelloidea; Scymnus; ladybird beetle; molecular data; predator; systematics.

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Figures

Figure 1.
Figure 1.
Scanning electron microscopy A–D antennae E–H prosternal process I–L tarsi M–P abdominal postcoxal line A, E, I, MNephus (Nephus) oblongosignatus Mulsant, 1850 B, F, J, NNephus (Geminosipho) reunioni (Fürsch, 1974) C, G, K, ONephus (Nephus) voeltzkowi Weise, 1910 D, H, L, PNephus apolonia Magro & Almeida, sp. nov.
Figure 2.
Figure 2.
Nephus (Nephus) oblongosignatus Mulsant, 1850 A dorsal view B ventral view C lateral view D frontal view E, F abdomen G–K male genitalia: G spicula H, I tegmen (dorsal and lateral view) J, K penis L, M female genitalia: L spermatheca M coxites.
Figure 3.
Figure 3.
Nephus (Geminosipho) reunioni (Fürsch, 1974) A dorsal view B ventral view C lateral view D frontal view E, F abdomen G–J male genitalia: tegmen (dorsal and lateral view): I, J penis K, L female genitalia: K spermatheca L coxites.
Figure 4.
Figure 4.
Nephus (Nephus) voeltzkowi Weise, 1910 A dorsal view B ventral view C lateral view D frontal view E abdomen F, G female genitalia: F coxites G spermatheca.
Figure 5.
Figure 5.
Nephus (Nephus) apolonia Magro & Almeida, sp. nov. A dorsal view B ventral view C lateral view D frontal view E, F abdomen G–J male genitalia: G, H penis I, J tegmen (dorsal and lateral view) K, L female genitalia: K spermatheca L coxites.
Figure 6.
Figure 6.
Maximum likelihood phylogeny of Nephus (Nephus) apolonia Magro & Almeida, sp. nov. and four related species based on the mitochondrial genome (without the control region) reconstructed through 1000 non-parametric bootstrap replicates. The scale bar indicates 0.04 substitutions per site. Numbers on major nodes represent Maximum Likelihood bootstrap support.

References

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