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| Infrantenna fissilis Liu & Sittichaya, 2022 |
ABSTRACT
We describe a new genus, Infrantenna gen. nov. and a new species Infrantenna fissilis gen. et sp. nov., from Thailand and briefly review the Oriental genera currently placed in the tribe Xyloperthini Lesne, 1921. A key to the Oriental genera of Xyloperthini is provided.
Keywords: Xyloperthini, Oriental fauna, new genus, new species, key
Class Insecta Linnaeus, 1758
Superfamily Bostrichoidea Latreille, 1802
Family Bostrichidae Latreille, 1802
Subfamily Bostrichinae Latreille, 1802
Tribe Xyloperthini Lesne, 1921
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| Head of Infrantenna fissilis gen. et sp. nov., ♂, holotype (NHMUK014433955). A. Frontal view. B. Fronto-lateral view. C. Antennae. Not to scale. |
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| Infrantenna fissilis gen. et sp. nov., ♂, holotype (NHMUK014433955). A. Dorsal view. B. Lateral view. C. Ventral view. D. Declivity. Scale bar = 1 mm. |
Infrantenna gen. nov.
Diagnosis: A member of the tribe Xyloperthini as characterized by the antennal club segments elongated, the mandibles crossed at the tips, and the lamelliform intercoxal process of the first abdominal ventrite (Lesne 1901; Fisher 1950; Liu & Schönitzer 2011). This taxon is distinguished from other genera of Xyloperthini by the following combination of characters: frons weakly convex, without tuft of long upwardly directed hairs on the head in either sex. Antennal fossa inserted next to lower intero-lateral margin of eyes below the fronto-clypeal suture; eyes strongly detached from cheek. Posterior part of elytral disc without costae or teeth, infero-lateral margin of elytral declivity strongly raised to form a false epipleuron; female elytra declivity with deep clefts extending a little above the middle of the declivity, dividing the outer part of the declivity from a pair of elongate, raised and grooved sutural lobes; posterior margin of 5 th abdominal ventrite strongly emarginate in female; 5 th abdominal ventrite of male with pleural pieces.
Etymology: The genus name is feminine, and refers to the unusually low position of the antennal fossa.
Distribution: Northern Thailand.
Infrantenna fissilis gen. et sp. nov.
Etymology: The name ‘fissilis’ is from the Latin word for ‘cleft’ which refers to the deep clefts of the elytral declivity of the female.
Lan-Yu Liu and Wisut Sittichaya. 2022. The Oriental Genera of Xyloperthini (Coleoptera: Bostrichidae: Bostrichinae), with A New Genus and Species from Thailand, and A Key to the Genera. European Journal of Taxonomy. 828(1); 45–60. DOI: 10.5852/ejt.2022.828.1851
