Mecyclothorax manautei Liebherr, 2018
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publication ID |
https://dx.doi.org/10.3897/dez.65.21000 |
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publication LSID |
lsid:zoobank.org:pub:73DEE0F3-2BB0-4A21-B445-5E168FE50F54 |
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persistent identifier |
https://treatment.plazi.org/id/0A0B84B4-7BC4-4925-B2DE-6AAF3582A1BF |
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taxon LSID |
lsid:zoobank.org:act:0A0B84B4-7BC4-4925-B2DE-6AAF3582A1BF |
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treatment provided by |
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scientific name |
Mecyclothorax manautei Liebherr |
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sp. n. |
11. Mecyclothorax manautei Liebherr sp. n. Figures 17I-J View Figure 17 , 18E View Figure 18 , 20A View Figure 20 , 23A View Figure 23 , 24A View Figure 24 , 25 View Figure 25
Diagnosis.
This species can be diagnosed by small body size-standardized body length 3.5-3.9 mm-and the transversely ovoid pronotum with evenly convex lateral margins basally, i.e., hind angles lacking (Fig. 20A View Figure 20 ). The elytral striae are much more reduced than in the prior two species- M. laterovatulus and M. najtae -with the sutural stria obsolete at midlength, and only striae 2-3 evident there, though very shallow. The eyes broadly cover the ocular lobe, ocular lobe ratio 0.88-0.89, and are very convex, i.e. “popeyed”, with EyL/EyD = 2.2-2.4. Chaetotaxy +/+//+/-//+/2/+/+.
Description
(n = 4). Head capsule quadrate, eyes very convex, popeyed, ocular lobe meeting gena at obtuse angle close to eye posterior margin; 14 ommatidia along horizontal diameter of eye; ocular ratio 1.48-1.52, ocular lobe ratio 0.88-0.89, EyL/EyD = 2.2-2.4; frontal grooves deep, slightly convergent to deepest portion just posterad clypeus, deeply extended onto clypeus; mandibles elongate, mandibular ratio 1.92; ligular anterior margin rounded to ligular seta, concave between setae, the two setae separated by one to two setal diameters; paraglossae thin, extended twice as far beyond ligular margin as their basal length to margin; antennae elongate, antennomere 9 length 2.25 × maximal breadth; antennomere 3 glabrous except for apical ring of setae. Pronotum transversely ovoid, lateral margin evenly convex anterad base, hind angles absent though suggested by presence of short peduncular collar at base of pronotum (Fig. 20A View Figure 20 ), MPW/BPW = 2.46-2.55, MPW/PL = 1.29-1.31; front angles slightly protruded, obtuse-rounded, APW/BPW = 1.39-1.48; median base unmargined basally, trapezoidally depressed relative to disc, the median longitudinal impression divided basally into two transverse impressions that isolate disc from base, each transverse basal impression terminated laterally in pitlike laterobasal depression; median longitudinal impression finely incised on disc, terminated anteriorly just anterad anterior transverse impression, a lenticular fovea at posterior juncture with basal transverse impressions; anterior transverse impression shallow, broad, but traceable to front angles; proepisternum separated from prosternum by a distinct groove both anteriorly and ventrally; smooth anteapical impression well developed laterally, continuous though shallower ventrally; prosternal process deeply and broadly depressed between procoxae, that depression extended 2/3 distance toward anterior prothoracic margin, the depression broadest at its anterior terminus. Elytra broadly ovoid, humeri sloped posteriorly laterad scutellum, humeral angle indicated only by slight change in curvature at juncture of narrow basal elytral groove and broader lateral marginal depression; MEW/EL = 0.79-0.94; all striae reduced on disc, stria 3 and 6 more evident, but intervening intervals at most slightly convex; only stria 8 evident apically, stria 2 present as very broad and shallow depression; elytra appressed and conjoined apically, the suture upraised at apex. Pterothoracic mesepisternal anterior furrow with 5 punctures in a curved line; mesosternal-mesepisternal suture complete (as in Fig. 3A View Figure 3 ); metepisternum maximum width/lateral length = 1.08; metepisternal-metepimeral suture complete. Abdomen with broad crescent-shaped depression along suture between first and second ventrite, second ventrite only slightly depressed within crescent; suture between second and third ventrites reduced though traceable laterally; ventrites 2-6 with broad, shallow, linear plaques near lateral margin. Microsculpture of frons reduced, surface glossy, indistinct transversely stretched sculpticells evident on vertex; pronotal disc glossy, transverse-line microsculpture visible over portions of surface depending on direction of light reflection, trapezoidal median base with only indistinct indications of transverse microsculpture; elytra iridescent, disc with elongate transverse mesh mixed with transverse lines, elytral apex covered with elongate transverse-mesh microsculpture.
Male genitalia (n = 1). Antecostal margin of abdominal mediotergite IX broadly angulate, not extended (Fig. 17J View Figure 17 ); right paramere narrow basally, evenly narrowed to apex, with 5 setae along ventral margin and two short apical setae (Fig. 18E View Figure 18 ); left paramere broad basally, narrowed to a dorsally twisted apex, parameral apex flexibly articulating with base, two elongate apical setae present; aedeagal median lobe robust, broad dorsoventrally, with apex distinctly down-curved relative to the expanded shaft and flattened into an apical face (Fig. 17I View Figure 17 ); male aedeagal internal sac with short flagellum and flagellar sheath present, a dorsal plate dorsad and basad flagellar complex, and a large dorsoapical field of macrospicules.
Female reproductive tract (n = 1). Bursa copulatrix length slightly greater than circumference, its surface thin, translucent, only slightly wrinkled (Fig. 23A View Figure 23 ); spermathecal duct entering near bursa-common oviduct juncture with duct oriented toward right side of bursa, duct length about 1.25 × length of spermathecal reservoir; laminar helminthoid sclerite with rounded apex present at base of spermathecal duct; spermatheca fusiform on narrow duct, spermathecal gland duct entering at base of spermathecal reservoir; ligular apophysis present near base of common oviduct; basal gonocoxite 1 with apical fringe of two setae laterally-a smaller seta may be present medially-and several small setae near apex of medial margin (Fig. 24A View Figure 24 ); gonocoxite 2 moderately broad basally, basal width 0.6 × medial length; two gracile lateral ensiform setae of moderate length present.
Types - Holotype male (MNHN): NEW CALEDONIA 11138 / 21°53 ’SX166°24’.1400m. / Mt Humboldt, moss forest. / 6-7Nov2002. Monteith & / Burwell.pyreth,trees&logs // QUEENSLAND / MUSEUM LOAN / DATE: Nov. 2003 / No. LEN-1686 (green label) // New Caledonia Mecyclothorax revision / measured specimen 1 / J.K. Liebherr 2016 // HOLOTYPE / Mecyclothorax / Mecyclothorax manautei / J.K.Liebherr 2017 (black-bordered red label).
Paratypes (3 specimens). NEW CALEDONIA: Mt. Humboldt, moss forest, 1400 m el., 21°53'S 166°24'E, pyrethrum trees & logs, 06-07-xi-2002, lot 11138, Monteith/Burwell (QMB, 2), beyond summit, 1500 m el., 21°53'S 166°25'E, 07-xi-2002, lot 11122, Burwell (QMB, 1).
Etymology.
This species epithet is a patronym honoring Joseph Manauté, Directeur du Parc Provincial de la Rivière Bleue chez Province Sud, who provided helicopter support for the Queensland Museum expedition to Mt. Humboldt, allowing Geoff Monteith and Chris Burwell to collect the type series of this species as well as other interesting and important taxa ( Reid and Smith 2004).
Distribution and habitat.
The species is known only from elevations 1400-1500 on Mt. Humboldt (Fig. 25 View Figure 25 ). The four specimens were all collected via application of pyrethrin spray to tree trunks and downed logs.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.