Monilonotum pascoei Bartlett & Lambkin 2022, comb. nov.
Creators: name: Bartlett, Justin S.
name: Lambkin, Christine L.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cleridae
Monilonotum
Monilonotum pascoei

description: Monilonotum pascoei (Gorham, 1876) comb. nov.
(Figs 22, 41, 79, 114, 153; Map 2)
Opilo pascoii Gorham, 1876: 71.
Type material examined. LECTOTYPE (here designated): New South Wales: Type (printed on a white circular label with red border) // N.S. W. (handwritten on a green oval-shaped label) // Gorham Type (printed on red card) // Pascoe coll. 93-60 // Opilo pascoei Gorh. (handwritten) (NHML).
Comment on lectotype designation. As Gorham (1876) made no reference to specimens in his description it cannot be assumed that the nominal species group name Opilo pascoei was based on a single specimen. The specimen labelled ‘type’ in the Natural History Museum, London (NHML) must therefore be considered a syntype (ICZN 1999: Article 73.2) and available for lectotype designation (ICZN 1999: Article 74.1).
Other material examined (14 specimens): Victoria: A.H. Elston Collection // Beaconsfield, V F. E. Wilson 26.12.19 // K 304538 (1 ♀, AM); Victoria Redhill 13 Jan 1974 // O. pascoei Gorh. // E. Gowing-Scope collection BMNH(E) 2005-4 (1 ♀, NHML); Woori Yallock Vict. 13.1.26 // F. E. Wilson Collection // COL-65672 // COL-65673 (2 ♀ on same card-mount, NMV); 2657 // Nat. Mus. Victoria C. Frech’s Coll 5.11.08 // Opilo pascoei Gorh. Victoria // COL-65675 (1 ♀, NMV); Vic // COL-65671 (1 ♀, NMV); Kosciusko Vic 2.26 (1 ♁, ANIC); Macedon, Vic C. Oke // COL-65667 (1 ♁, NMV); Riddell, V. 1.1.27 C. Oke // COL-65668 // COL-65669 (2 ♁ on same cardmount, NMV). New South Wales: Mt Murray Rd Macquarie Pass NSW 19.i.86, Leptospermum // S.G. Watkins Collection Donated 2001 (1 ♀, ANIC); West Pymble, nr Sydney N.S.W. 22.i.1983 D.J. Scambler // K 304577 (1 ♀, AM); Australia: NSW Mt Keira (west flank) 27 Nov 1994 A. Sundholm; On flowers of Acmena smithi (1 ♁, ANIC). Australia Capital Territory: Orroral R. ACT 25 July 1982 K.R. Pullen // under bark Eucalyptus // Kim Pullen Collection (1 ♀, ANIC).
Diagnosis. Pronotum rounded laterally, disc smooth, without conspicuous punctation; elytra predominantly dark brown with the entire basal third to two-fifths orange-brown and a whitish transverse outward sloping fasciae and a whitish triangular apical maculae, punctation without nodules, 8 th stria beginning just behind humeral tumescence, striae terminating at posterior margin of transverse fascia; coxae, trochantins and femoral base paler than majority of femora, tarsi with three ventral tarsal pads.
Monilonotum pascoei is easily confused with M. sundholmi sp. nov. though may be recognised by the colouration of its coxae, trochantins and femoral bases, which are paler than the ventrites and remainder of legs; the elytral intervals (spaces between punctures) of M. pascoei are wider and more rounded than those of M. sundholmi sp. nov. which tend to be narrow and ridge-like.
Description. Habitus: Fig. 153. Total length: 7.7–9.7 mm. Head: Vertex and frons black, clypeus, supraantennal elevations and genae black-brown, gular region paler, anteclypeus semi-transparent orange, antennae, labrum and palpi orange-brown; eyes separated by 1.2–1.6 eye widths; vertex and frons only lightly punctate; genae wrinkled, submentum smooth; exterior margins of terminal palpomeres about 1.7–2.3 times (maxillae) and 2.8–3 times (labium) the length of inside edges (the larger terminal maxillary palpomeres being those of males); antennae long, reaching to or slightly beyond base of pronotum; eyes and most of cranium vested with erect pale setae, frons with slightly shorter medially-directed setae. Prothorax: Dark brown except pronotal collar and pronotal projection whitish or pale yellow; pronotum 1.14–1.27 times longer than wide, sides evenly curved, middle slightly broader than lateral part of pronotal arch; subapical depression v-shaped, central impression of disc smooth, flowing from subapical depression, not sulcate, pronotum with weak lateral impression, surface smooth, almost impunctate, punctation consisting of sparse inconspicuous (shallow and smooth) setose impressions; moderately distributed with long erect setae and shorter finer multi-directional setae. Pterothorax: Ventrites orange, vested with short, pale, posteriorly-directed, semi-decumbent setae; elytra (Fig. 22) three-toned (each elytron with basal third to two-fifths orange-brown this area often sloping posteriorly toward suture, posterior three-fiths to two-thirds black-brown, interrupted by a whitish transverse fascia, which slopes slightly away from the suture, and a triangular apical macula); length to width ratio 2.55–2.86:1; 8 th stria beginning immediately behind humeral tumescence, all stria terminating abruptly at posterior margin of whitish transverse fascia, punctation without nodules, epipleurae extending into apical curve, becoming obscure near apex; interstriae with posteriorly-directed, semi-erect setae about as long as distance between centres of neighbouring punctures, plus erect setae of slightly longer length, very small intrafoveal setae seldomly observed (apparently absent from most punctures). Legs: Almost entirely orange-brown, hind coxae, trochanters and extreme base of metafemora paler (orange, yellow or whitish); all femora swollen in males (most notably the metafemora), profemora only swollen in females (other femora slender). Abdomen: Basal half of first ventrite pale (orange, yellow or whitish), other ventrites black-brown. Male genitalia: Tegmen as in Fig. 41; apex of parameroid lobes narrowing unevenly to a point, inner margin indented; dorsal sinus slightly shorter than onethird tegmen length, apical third gradually broadening with profile of parameroid lobes, inner two-thirds reasonably broad (in comparison with M. doddi and M. sundholmi), sub-parallel; ventral sinus about two-thirds as long as dorsal sinus; apodeme about one-third tegmen length; median lobe as in Fig. 79; pygidium as in Fig. 114.
Variation. In contrast to females, males have noticeably swollen femora, larger terminal maxillary palpomeres and the slightly more bulging eyes.
Biology. Plant associations include Eucalyptus, Leptospermum and Syzygium (Myrtaceae). An ACT specimen, collected in July under eucalypt bark was probably taking refuge over winter there; the collection times of other specimens (November to February) are likely more representative of when adults are active.
Distribution (Map 2). Vic, ACT and NSW: all known localities fall within the Temperate Broadleaf and Mixed Forest terrestrial ecoregions as defined by the National Reserve System (DAWE 2012).
description: Published as part of Bartlett, Justin S. & Lambkin, Christine L., 2022, Australian Opilonini (Coleoptera: Cleridae: Clerinae) part I: A revised taxonomy for Australian Opilo Latreille including descriptions of new genera and species, pp. 1-81 in Zootaxa 5220 (1) on pages 34-35, DOI: 10.11646/zootaxa.5220.1.1, http://zenodo.org/record/7441294