Cillaeopeplus temporalibus Kirejtshuk, 2022

Kirejtshuk, Alexander G. & Kovalev, Alexey V., 2022, Monograph on the Cillaeinae (Coleoptera: Nitidulidae) from the Australian Region with comments on the taxonomy of the subfamily, Zootaxa 5103 (1), pp. 1-133 : 88-89

34. Cillaeopeplus temporalibus Kirejtshuk et Kovalev, sp. nov.

Figs 27 , A–E

LSID urn:lsid:zoobank.org:act:342BC628-A827-4EAE-907C-5F3987EF0367

Type specimens examined. Australia: holotype, female ( ANIC)—“ Mt. Lewis , QLD., 20 km SW Mosmann, 1000 m, 26 June—1 Aug 1982, S. & J. Peck, SBP52”, “ flight intercept trap, rainforest.”

Diagnosis. See the Diagnosis of the previous new species. In addition to this diagnosis, Cillaeopeplus temporalibus sp. nov. differs also from both Micronesian congeners in the temples distinctly externally projecting behind eyes.

Etymology. The epithet of this new species means “temporal”.

Note. This new species shares many characters with the previous new species and, therefore, the features of this new species different from another Australian congener are mostly mentioned in the below description.

Description of holotype (female). Length of body with abdomen 4.8, length without abdomen 3.0, width 1.1, height 0.4 mm. Elongate, subflattened dorsally and rather convex ventrally; subunicolorous reddish brown with slightly darkened head and distal half of elytra (probably because darkened hind wings); body scarcely shining; body with rather conspicuous pubescence of very fine yellow hairs forming on elytra longitudinal rows, anterior and posterior edges of pronotum with dense microsetae, pronotal and elytral sides shortly ciliate, abdominal sclerites with denser and less conspicuous yellowish hairs.

Head and pronotum with comparatively shallow punctures, somewhat coarser than eye facets, separated by less than one puncture diameter, interspaces between them finely and densely microreticuleted to slightly alutaceous. Elytra with comparatively shallow striae becoming shallower at sides and coordinated with one row of distinct punctures in bottom of each stria, interstial spaces with one row of punctures as distinct as strial punctures and finely microreticulate to alutaceous. Exposed abdominal dorsal sclerites with shallow and finer punctures than those on head and pronotum (without microtubercles), and sharply to more or less smoothly microreticulate. Prosternum with rather fine, very shallow and rather sparse punctures along middle, and metaventrite with very coarse and very sparse punctures, interspaces between punctures smooth.

Head with temples angularly projecting behind eyes, about as long as distance between eyes. Antennae markedly shorter than head wide. Elytra slightly widening posteriorly, nearly 1.4 × as long as their combined width. Abdomen with segments 5 and 6 about 2.2 × as wide as long; postbasal lines of exposed tergites behind elytral apices well expressed and their lateral ends not reaching middle of tergites. Pygidium nearly as wide as long, rounded to subtruncate at apex. Terminal maxillary palpomere nearly 2.0 × as long as thick and subcylindrical. Terminal labial palpomere somewhat longer than thick, subovoid and narrowing at oblique apex. Mentum about 3.0 × as wide as long, anterior edge shallowly bi-emarginate. Median part of prosternum almost gently convex. Prosternal process strongly widened before subtruncate apex, its apex nearly 3.5 × as wide as distance between procoxae. Distance between procoxae about 0.3 × as great as length of antennal club, and about 0.5 × as great as that between mesocoxae and about as great as that between metacoxae. Mesothoracic median plate much more than 0.5 × as wide as distinctly outlined premesocoxal depressions. Hypopygidium about 1.3 × as wide as long and with widely rounded posterior edge. Protibia somewhat narrower than antennal club, comparatively coarsely serrate along outer edge and with preapical teeth very big and turned below. Meso- and metatibiae somewhat wider than protibia, with rounded subapical angle and with two rows of short and very stout spines along outer edge becoming more raised apically.

Ovipositor moderately sclerotized and with comparatively wide gonocoxites, with heavily sclerotized posterior edge of gonocoxites and baculi; gonocoxites comprising almost 0.3 of total length, inner lobes transversely divided, lateral lobes moderately sclerotized and about 0.6 × as long as gonocoxites in general, outer outline of gonocoxites slightly concave before apex, rather narrow apex with short styli located at distance from apex (greater than length of styli); styli strongly widened apically and somewhat curved.

Distribution. Australia, QLD (type locality).

Notes on bionomy. No data, except probable association with rainforest.

Figures

FIGURE 27. Cillaeopeplus temporalibus sp. nov., orig. A–E: holotype, female from QLD (“… 20 km SW Mosmann…”); A: body, dorsal; B: head, dorsal; C: head, ventral; D: thorax, ventral; E: ovipositor, ventral. Scale bars: a = 1.0 mm to Fig. A; b = 1.0 mm to Figs B–C; с = 0.25 mm to Fig. E.