Zyras (Zyras) conlectus, Assing, 2019

Assing, Volker, 2019, On the Lomechusini fauna of the Palaearctic and Oriental regions. XXVI. New species, a new synonymy, and additional records (Coleoptera: Staphylinidae: Aleocharinae), Beiträge Zur Entomologie = Contributions to Entomology 69 (1), pp. 33-70 : 64-65

Zyras (Zyras) conlectus spec. nov.

urn:lsid:zoobank.org:act:EEF29D05-2E17-4205-805A-B8BFFAE0FE98

(Figs 68–69, 155–157, 166–169)

Type material: Holotype: “NW MYANMAR: Chin State, NW Falam, 400–500 m, V.–VI.2016, leg. local collectors / Holotypus Zyras conlectus sp. n., det. V. Assing 2018” ( MNB) . Paratypes: 7 exs.: same data as holotype ( MNB, cAss) .

Etymology: The specific epithet (Latin, adjective: narrow) alludes to the shape of the ventral process of the aedeagus.

Description: Body length 4.5–7.0 mm; length of forebody 2.5–3.0 mm. Habitus as in Fig. 68. Coloration: head and pronotum black; elytra reddish-yellow with the postero-lateral portions extensively blackish; abdomen bicoloured, with segments II–VI reddish and segments VII–VIII blackish-brown to blackish; legs pale-yellowish; antennae blackish-brown to black with antennomeres I brown and II and the base of III yellowish-brown; maxillary palpi dark-brown, with the terminal palpomere yellowish.

Head moderately transverse, broadly impunctate along middle; punctation in lateral dorsal portions moderately coarse and sparse. Eyes large, much longer than postocular region in dorsal view. Antenna 1.9–2.3 mm long; antennomeres IV and V weakly oblong, VI approximately as long as broad or weakly oblong, VII approximately as long as broad or weakly transverse, VIII–X weakly transverse, X distinctly less than 1.5 times as broad as long, and XI elongate, approximately as long as the combined length of VIII–X.

Pronotum 1.1–1.2 times as broad as long and 1.07– 1.15 times as broad as head, broadest near anterior angles, distinctly tapering posteriad; lateral margins straight in posterior two-thirds (dorsal view); punctation very coarse, very irregularly distributed, arranged in more or less distinct clusters, these clusters often situated in very shallow impressions, middle and lateral portions with extensive impunctate patches.

Elytra 0.75–0.90 times as long as pronotum; punctation coarse, defined, very dense anteriorly, decreasing in density posteriad, and very sparse near posterior margin. Hind wings fully developed. Metatarsomere I shorter than the combined length of II–IV.

Abdomen with moderately deep anterior impressions on tergites III–V; anterior impressions of tergites III–V and anterior portions of tergites VI–VII each with a transverse band of dense and coarse non-setiferous punctation not arranged in transverse series; tergite III with a lateral setiferous puncture on either side and with four setiferous punctures at posterior margin; tergites IV–V with a lateral setiferous puncture on either side (often accompanied by few non-setiferous punctures) and with four to six setiferous punctures at posterior margin; tergite VI with a lateral setiferous puncture on either side (often accompanied by few non-setiferous punctures) and with six setiferous punctures at posterior margin; tergite VII (Fig. 69) with several irregularly distributed setiferous punctures in posterior portion and with numerous minute setiferous punctures at posterior margin, palisade fringe present; tergite VIII (Fig. 69) with sparse setiferous punctures postero-laterally, posterior margin with sexual dimorphism.

: posterior margin of tergite VIII (Figs 69, 166) with four tooth-shaped projections; posterior margin of sternite VIII convex, nearly truncate in the middle ( Fig. 167 ); median lobe of aedeagus ( Figs 155–156 ) 0.70–0.75 mm long, with slender and apically acute ventral process and with very short crista apicalis; paramere ( Fig. 157 ) 0.8–0.9 mm long and with moderately long apical lobe.

: posterior margin of tergite VIII smoothly convex or with shallow median concavity ( Fig. 168 ); posterior margin of sternite VIII concave in the middle ( Fig. 169 ).

Comparative notes: As can be inferred from the generally similar external characters, particularly the conspicuously irregular punctation and the unusally uneven surface of the pronotum, and the punctation pattern of the abdomen, as well as from the similar modifications of the male tergite VIII, and from the shape of the apical lobe of the paramere, Z. conlectus is closely allied to Z. proximus CAMERON, 1939 ( India, China, Thailand, Laos) and Z. novinversus ASSING, 2017 ( Thailand, Laos). It is distinguished from both by the longer, more slender, and apically more acute ventral process of the aedeagus and additionally as follows:

from Z. proximus by completely different coloration of the abdomen alone ( Z. proximus : abdomen dark-brown with the posterior margins of the segments paler);

from the similarly coloured Z. novinversus by darker maxillary palpi and abdominal segments VII–VIII ( Z. novinversus : maxillary palpi yellowish to reddishyellow; abdominal segments VII and VIII pale-brown to dark-brown), the elytral punctation ( Z. novinversus : elytral punctation less dense anteriorly and not distinctly decreasing in density posteriad), more extensive nonsetiferous punctation of the anterior impressions and anterior portions of tergites III–VI, and by more pronounced teeth at the posterior margin of the male tergite VII.

For illustrations of Z. proximus and Z. novinversus see

ASSING (2017b).

Distribution: The type locality is situated to the northwest of Falam in Northwest Myanmar. Additional data are not available.

Figures

Figs 166–169: Zyras conlectus: male tergite VIII (166); posterior portion of male sternite VIII (167); female tergite VIII (168);

Figs 145–165:Drusilla spiniventris(145–147), D. breviuter(148–152), Pheidologitonetes biplicatus (153–154), Zyras conlectus (155– 157), Z. hetzeli (158–159), Z. reductus(160–162), andZ. shavrini(163–165): male tergite VIII (145, 148); median lobe of aedeagus in lateral and in ventral view (146–147, 149–150, 153–156, 158–161, 163–164); female tergite VIII (151); spermatheca (152); paramere (157, 162, 165). Scale bars: 145–151, 153–165: 0.2 mm; 152: 0.1 mm.