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| Borneophanus spinosus
Yoshida & Hirowatari, 2018
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Abstract
A new silvanid genus Borneophanus gen. n. is described based on specimens collected from Malaysian Borneo. A new species, Borneophanus spinosus sp. n., is described herein. Digitiform sensilla on the apical maxillary palpomere is reported in Silvanidae for the first time.
Keywords: Borneophanus, Cucujoidea, digitiform sensilla, Malaysia, Telephanini
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| Figure 2. Close-up image of head, pronotum, scutellar shield and basis of elytra of Borneophanus spinosus gen. et sp. n., holotype, male. |
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| Figure 1. Habitus of Borneophanus spinosus gen. et sp. n., holotype, male. A dorsal B ventral aspect. |
Borneophanus gen. n.
Diagnosis: Among telephanine genera, this new genus shares the following character states with Telephanus, Psammoecus, and Indophanus Pal, 1982: apical maxillary palpomere securiform; apical labial palpomere securiform; scutellary striole absent (some species of Malagasy Telephanus have a scutellary striole). This new genus differs from these genera by the combination of the following character states: distinct pair of longitudinal frontal lines present (absent in Telephanus); scutellar shield with a transverse carina and excavate posteriorly (flat in Psammoecus); antennomere IV normal (markedly long, approximately twice as long as combined length of II and III in Indophanus) (Thomas and Nearns 2008; Sen Gupta and Pal 1996). In addition, this new genus possesses the following characteristic morphology: the asymmetric shaped antennomere X (somewhat asymmetric in Bolianus); the sharply protruding elytral apices; the non-folded internal sac; the partly coiled flagellum; and the very long and rolled up spermathecal duct.
Distribution: Malaysia (Sabah and Sarawak states).
Etymology: The new genus name is composed of two words, the locality, Borneo where this new genus was collected, and the Greek phanos meaning bright.
Borneophanus spinosus sp. n.
Diagnosis: This new species is superficially similar to some Telephanus species bearing long spines on lateral pronotum and elytra. This new species can be easily distinguished from these species by the distinct pair of longitudinal frontal lines, the asymmetric shaped antennomere X, and the sharply protruding elytral apices.
Etymology: The specific name means thorny and indicates the characteristic long spines.
Remarks: This new species possesses characteristic long spines covering the lateral margins of pronotum and elytra. In possessing such setation, some Telephanus species (e.g., T. paradoxus and T. sellatus Sharp, 1899) are superficially similar to this new species. They can be easily distinguished by the diagnostic character states of these genera. Otherwise, like Telephanus, such setation often occurs as a taxonomic character at the species or species group level; thus, the setal situation is not regarded as a character of this new genus.
Takahiro Yoshida and Toshiya Hirowatari. 2018. A New Genus and Species of Brontinae from Borneo (Coleoptera, Silvanidae). ZooKeys. 805: 45-57. DOI: 10.3897/zookeys.805.28757
