Acrotona recondita (Erichson)

Klimaszewski, Jan, Godin, Benoit, Langor, David, Bourdon, Caroline, Lee, Seung-Il & Horwood, Denise, 2015, New distribution records for Canadian Aleocharinae (Coleoptera, Staphylinidae), and new synonymies for Trichiusa, ZooKeys 498, pp. 51-91 : 55

Taxon classification Animalia Coleoptera Staphylinidae

Acrotona recondita (Erichson) Figs 1-8

Acrotona recondita LECTOTYPE (male): Homalota recondita Erichson; USA: Pennsylv[ania], Zimm[erman] [on green rectangular card]; # 5472; Typus; recondita Er.; Lectotypus, male, Homalota recondita Erichson, V.I. Gusarov des. (not published); our lectotype designation label as Homalota recondita ; Acrotona recondita (Er.) V.I. Gusarov 2002 (ZMB) studied. PARALECTOTYPES: labelled as the lectotype, our paralectotype designation label (ZMB) 1 male, 2 females, 1 sex undetermined, specimen partially damaged, studied.

Arisota apacheella Casey 1910: 135. Synonymized by Moore and Legner 1975: 371.

Arisota insueta Casey 1910: 134. Synonymized by Moore and Legner 1975: 371.

Arisota pomonensis Casey 1910: 135. Synonymized by Moore and Legner 1975: 371.

Arisota speculifer Casey 1910: 135. Synonymized by Moore and Legner 1975: 371.

Arisota tetricula Casey 1910: 134. Synonymized by Moore and Legner 1975: 371.

Arisota umbrina Casey 1910: 136. Synonymized by Moore and Legner 1975: 371.

Diagnosis.

Body narrowly subparallel (Fig. 1), length 1.7-1.8 mm, dark brown with two large reddish-brown spots on posterior sutural part of elytra and lighter colour tarsi (Fig. 1); head, pronotum and elytra coarsely and sparsely punctate, punctures large; pubescence sparse; integument strongly glossy; pronotum transverse, slightly narrower than elytra, pubescence directed laterad from median line; elytra at suture about as long as pronotum; abdomen subparallel. MALE. Median lobe of aedeagus with oval bulbus and narrowly elongate and rounded tubus in dorsal view (Fig. 3), in lateral view tubus slightly arcuate basally and straight apically (Fig. 2); internal sac structures not pronounced; tergite VIII truncate apically (Fig. 4); sternite VIII slightly emarginated at apex and with broad distance between base of disc and antecostal suture (Fig. 5). FEMALE. Tergite VIII truncate apically (Fig. 7); sternite VIII broadly arcuate apically (Fig. 8); spermatheca with narrowly elongate club-shaped capsule angularly connected to narrow and long stem, together forming L-shaped structure (Fig. 6).

Distribution.

Natural history.

The single female in Saskatchewan was captured in horse manure.

Remarks.

This species was originally described by Erichson (1839) as Homalota recondita , from Pennsylvania. It clearly does not belong to Homalota and was subsequently listed by Moore and Legner (1975) as belonging to the subgenus Dimetrota of Atheta . Gusarov, V.I. identified types of Homalota recondita as Acrotona . The inclusion of this species in Acrotona needs confirmation because it has scarcly visible minute part of pronotal hypomeron visible in lateral view.