Zyras ( Zyras ) hastatus FAUVEL, 1904

Assing, Volker, 2017, On Zyras sensu strictu in the East Palaearctic and Oriental regions, with a focus on the faunas of the Himalaya, India, Sri Lanka, Thailand, and Sulawesi (Coleoptera: Staphylinidae: Aleocharinae: Lomechusini), Beiträge Zur Entomologie = Contributions to Entomology 67 (1), pp. 117-192 : 139

publication ID

https://doi.org/10.21248/contrib.entomol.67.1.117-192

publication LSID

lsid:zoobank.org:pub:FD33C1AE-F7D9-4E3A-A053-A2CAA7261CFE

DOI

https://doi.org/10.5281/zenodo.5888511

persistent identifier

https://treatment.plazi.org/id/03A787BA-FFD7-E524-50C6-831B67FEF855

treatment provided by

Felipe

scientific name

Zyras ( Zyras ) hastatus FAUVEL, 1904
status

 

Zyras ( Zyras) hastatus FAUVEL, 1904 View in CoL

( Figs 16 View Figs 1–41 , 54 View Figs 42–54 , 90 View Figs 82–99 , Map 7 View Map 7 )

Zyras hastatus FAUVEL, 1904: 64 View in CoL .

Type material examined: Syntypes: 1 ♀: “ Belgaum / hastata Fvl. / Coll. I.R.Sc.N.B. / Syntypus Zyras hastatus Fauvel , rev. V. Assing 2016” ( IRSNB); 1 ♀ [damaged; both antennae missing]: “Cotype / Belgaum / 1266 / hastata Fvl. / Syntypus ♀ Zyras hastatus Fauvel , rev. V. Assing 2016” ( BMNH) .

Comment: The original description is based on at least two syntypes (“Sexus differentia latet”) from “Belgaum” ( FAUVEL 1904). One syntype was located in the collections of the IRSNB and another in the collections of the BMNH. Both syntypes are females.

Redescription: Body length 4.1–6.0 mm; length of forebody 2.1–2.8 mm. Coloration ( Figs 16 View Figs 1–41 , 54 View Figs 42–54 , 90 View Figs 82–99 ): head black; pronotum pale-reddish; elytra reddish-yellow with the postero-lateral portion extensively blackish (leaving only the scutellum and its vicinity, the anterior margin, and the suture reddish-yellow); abdomen bicoloured with tergites II–V pale-reddish, tergite VI black with the anterior margin and the antero-lateral portions reddish, and tergites VII–VIII black; legs pale-yellowish; antennae dark-brown with antennomeres I–III dark-reddish and the apical half of antennomere XI dark-reddish; maxillary palpi reddish with the terminal palpomere yellowish.

Head ( Fig. 54 View Figs 42–54 ) moderately transverse, median portion extensively impunctate; punctures in lateral portions moderately dense and large, but shallow. Eyes moderately large, but weakly convex, much longer than postocular region in dorsal view. Antenna ( Fig. 16 View Figs 1–41 ) 1.75 mm long; antennomeres IV approximately as long as broad, V weakly transverse, VI–X of gradually increasing width and increasingly transverse, X approximately 1.5 times as broad as long, and XI conspicuously elongate, nearly as long as the combined length of VII–X.

Pronotum ( Fig. 54 View Figs 42–54 ) distinctly transverse, approximately 1.2 times as broad as long and 1.3 times as broad as head, broadest anterior to middle; lateral margins smoothly convex (dorsal view); punctation not very coarse, rather sparse, and somewhat irregularly distributed; midline narrowly impunctate; lateral margins each with four long, black setae, anterior margin with an additional long black seta on either side.

Elytra ( Fig. 54 View Figs 42–54 ) 0.85 times as long as pronotum; punctation moderately coarse, defined, rather dense, and regularly distributed; interstices on average distinctly broader than diameter of punctures. Hind wings fully developed. Metatarsomere I approximately as long as the combined length of II–IV.

Abdomen ( Fig. 90 View Figs 82–99 ) narrower than elytra, with deep anterior impressions on tergites III–V; anterior impressions of tergites III–V each with a transverse row of non-setiferous punctures; tergite III with a lateral long brown seta on either side, posterior margin with three long brown setae on either side and with a median pair of fine short yellowish setae; tergites IV–V with a median pair of punctures, with a lateral seta on either side, posterior margins with four long brown setae on either side, and with a median pair of minute pale setae; tergite VI anteriorly only with few shallow non-setiferous punctures laterally (without such punctures in the middle), with a median pair of punctures, and with approximately 12 setiferous punctures at posterior margin, otherwise impunctate (except for scattered micropunctures); tergite VII anteriorly with a transverse row (not band!) of sparse non-setiferous punctures, with a transverse row of six setiferous punctures at posterior third, and with additional setiferous punctures at posterior margin; tergite VIII with rather sparse long setae only in posterior portion, posterior margin convex, in the middle with indistinct and small concavity.

♂: unknown.

Comparative notes: Among the species of similar coloration (e.g., Z. beijingensis PACE, 1993 ), Z. hastatus is characterized by slender antennae with a conspicuously elongate antennomere XI, a relatively strongly transverse pronotum with smoothly convex lateral margins, and the punctation pattern of the abdomen (particularly of tergites VI and VII).

Distribution: This species is currently known only from the type locality in South India ( Map 7 View Map 7 ).

IRSNB

Belgium, Brussels, Institut Royal des Sciences Naturelles de Belgique

BMNH

United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]

IRSNB

Institut Royal des Sciences Naturelles de Belgique

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

SubFamily

Aleocharinae

Tribe

Lomechusini

Genus

Zyras

Loc

Zyras ( Zyras ) hastatus FAUVEL, 1904

Assing, Volker 2017
2017
Loc

Zyras hastatus FAUVEL, 1904: 64

FAUVEL, A. 1904: 64
1904
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF