Habitus figures of Batriscenellus koreanus sp. nov. A dorsal view B mesotibia C antennae D dorsal view of abdomen E ventral view of abdomen. Scale bars: 1 mm (A); 0.5 mm (B-D).

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... tergite IV or VI without depression; phallobase of male genitalia without apophysis (Fig. 8) Elytra IV or VI with a pair of processes laterally; abdominal tergite IV with sulcus (Fig. 5C); abdominal ventrite VIII without paired medial setiferous patches (Fig. 5D) Figs 1E, 3D) ....3 Abdominal ventrites IV-VII with a pair of long setae at middle (Fig. 3D); paramere of male genitalia not bifid (Fig. 4C, D) .........................B. vicarius -Abdominal ventrites IV-VII without a pair of long setae at middle (Fig. 1E); paramere of male genitalia bifid ( Fig. 2C, D) Diagnosis. Members of this genus are easily separated from other genera of Batrisitae by the following combination of characters: head triangular with the transverse sulcus dorsally at mid-level of head and vertexal foveae; antennomere 1 subquadrate with dense trichomes (Figs 1C, 3B, 5B, 7B), antennomeres 9-11 clubbed; pronotum with median antebasal fovea, lateral antebasal foveae, inner basolateral foveae and outer basolateral foveae, disc with median and lateral longitudinal sulci; elytra with two basal foveae; mesotibia with spine on distal margin (Fig. 1B); abdomen rounded laterally; abdominal tergite IV largest; male genitalia asymmetric ( Diagnosis. ...

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... IV with sulcus (Fig. 5C); abdominal ventrite VIII without paired medial setiferous patches (Fig. 5D) Figs 1E, 3D) ....3 Abdominal ventrites IV-VII with a pair of long setae at middle (Fig. 3D); paramere of male genitalia not bifid (Fig. 4C, D) .........................B. vicarius -Abdominal ventrites IV-VII without a pair of long setae at middle (Fig. 1E); paramere of male genitalia bifid ( Fig. 2C, D) Diagnosis. Members of this genus are easily separated from other genera of Batrisitae by the following combination of characters: head triangular with the transverse sulcus dorsally at mid-level of head and vertexal foveae; antennomere 1 subquadrate with dense trichomes (Figs 1C, 3B, 5B, ...

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... foveae; antennomere 1 subquadrate with dense trichomes (Figs 1C, 3B, 5B, 7B), antennomeres 9-11 clubbed; pronotum with median antebasal fovea, lateral antebasal foveae, inner basolateral foveae and outer basolateral foveae, disc with median and lateral longitudinal sulci; elytra with two basal foveae; mesotibia with spine on distal margin (Fig. 1B); abdomen rounded laterally; abdominal tergite IV largest; male genitalia asymmetric ( Diagnosis. This species can be distinguished from the other Batriscenellus species by the following combination of characters: antennomere 8 subquadrate and smallest (Fig. 1C), abdominal tergite V with a pair of median setiferous patches, VI with deep ...

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... sulci; elytra with two basal foveae; mesotibia with spine on distal margin (Fig. 1B); abdomen rounded laterally; abdominal tergite IV largest; male genitalia asymmetric ( Diagnosis. This species can be distinguished from the other Batriscenellus species by the following combination of characters: antennomere 8 subquadrate and smallest (Fig. 1C), abdominal tergite V with a pair of median setiferous patches, VI with deep mediobasal sulcus (Fig. 1D), abdominal ventrite VIII with depressionand pair of dense setiferous patches (Fig. 1E), phallobase of male genitalia widely expanded, apical lobe of male genitalia curved to right in lateral view (Fig. 2C, D), paramere forked into ...

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... rounded laterally; abdominal tergite IV largest; male genitalia asymmetric ( Diagnosis. This species can be distinguished from the other Batriscenellus species by the following combination of characters: antennomere 8 subquadrate and smallest (Fig. 1C), abdominal tergite V with a pair of median setiferous patches, VI with deep mediobasal sulcus (Fig. 1D), abdominal ventrite VIII with depressionand pair of dense setiferous patches (Fig. 1E), phallobase of male genitalia widely expanded, apical lobe of male genitalia curved to right in lateral view (Fig. 2C, D), paramere forked into two branches in lateral view, major branch curved to right (Fig. 2C, ...

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... This species can be distinguished from the other Batriscenellus species by the following combination of characters: antennomere 8 subquadrate and smallest (Fig. 1C), abdominal tergite V with a pair of median setiferous patches, VI with deep mediobasal sulcus (Fig. 1D), abdominal ventrite VIII with depressionand pair of dense setiferous patches (Fig. 1E), phallobase of male genitalia widely expanded, apical lobe of male genitalia curved to right in lateral view (Fig. 2C, D), paramere forked into two branches in lateral view, major branch curved to right (Fig. 2C, ...

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... Length 2.03-2.15 mm. Body reddish-brown (Fig. 1A). Head. All antennomeres with tubercles and long setae (Fig. 1C). Antennomere 1 subquadrate with dense trichomes on lateral margin, 2-7 rectangular, 8 rectangular [from photo] and smallest, 9 rectangular and larger than 3-8, 10 rhombic, 11 oval. Thorax. Each elytron with shallow discal stria. Abdomen. Abdominal tergite V with pair of ...

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... Length 2.03-2.15 mm. Body reddish-brown (Fig. 1A). Head. All antennomeres with tubercles and long setae (Fig. 1C). Antennomere 1 subquadrate with dense trichomes on lateral margin, 2-7 rectangular, 8 rectangular [from photo] and smallest, 9 rectangular and larger than 3-8, 10 rhombic, 11 oval. Thorax. Each elytron with shallow discal stria. Abdomen. Abdominal tergite V with pair of setiferous patches, VI with deep sulcus (Fig. 1D: arrow). ...

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... tubercles and long setae (Fig. 1C). Antennomere 1 subquadrate with dense trichomes on lateral margin, 2-7 rectangular, 8 rectangular [from photo] and smallest, 9 rectangular and larger than 3-8, 10 rhombic, 11 oval. Thorax. Each elytron with shallow discal stria. Abdomen. Abdominal tergite V with pair of setiferous patches, VI with deep sulcus (Fig. 1D: arrow). Abdominal ventrite VIII with depression and pair of dense setiferous patches (Fig. 1E: arrow). Aedeagus. Left side of phal-lobase widely expanded in dorsal view ( Fig. 2A, B: arrow). Apical lobe of male genitalia curved right in lateral view (Fig. 2C, D). Paramere forked into two branches in lateral view, major branch curved to right ...

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... margin, 2-7 rectangular, 8 rectangular [from photo] and smallest, 9 rectangular and larger than 3-8, 10 rhombic, 11 oval. Thorax. Each elytron with shallow discal stria. Abdomen. Abdominal tergite V with pair of setiferous patches, VI with deep sulcus (Fig. 1D: arrow). Abdominal ventrite VIII with depression and pair of dense setiferous patches (Fig. 1E: arrow). Aedeagus. Left side of phal-lobase widely expanded in dorsal view ( Fig. 2A, B: arrow). Apical lobe of male genitalia curved right in lateral view (Fig. 2C, D). Paramere forked into two branches in lateral view, major branch curved to right (Fig. 2C, ...