New Data on African Eumolpinae with Descriptions of New
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ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Veröffentlichungen des Naturkundemuseums Erfurt (in Folge VERNATE) Jahr/Year: 2019 Band/Volume: 38 Autor(en)/Author(s): Zoia Stefano Artikel/Article: New data on African Eumolpinae with descriptions of new taxa from the collections of the Natural History Museum of Erfurt (Insecta: Coleoptera: Chrysomelidae) 305-333 VERNATE 38/2019 S. 305-333 New data on African Eumolpinae with descriptions of new taxa from the collections of the Natural History Museum of Erfurt (Insecta: Coleoptera: Chrysomelidae) STEFANO ZOIA Abstract the opportunity to re-examine some problematic taxa, providing illustrations of the genitalia, and to correct a Mainly based on the collection of the Natural History homonymy issue in a genus name. Museum of Erfurt and on the private collection of the author, the following taxa are described: Afroeurydemus Material and methods adustus sp. n. (Kenya), A. adustus tanzaniae ssp. n. (Tanzania), A. adustus zambesianus ssp. n. (Namibia), All specimens are preserved dried and glued on pinned A. augusti sp. n. (Zambia), Phascus pallidus australis cards. ssp. n. (Namibia). Selmania nom. nov. is proposed as The reported length of the specimens is evaluated from replacement name for Massartia Selman, 1965 (nec the anterior edge of pronotum to the elytral apex. The Conrad, 1926, nec Schouteden, 1952) and the following ratio of frons width to eye width, to describe the di- new combinations are formalized: Selmania albertiana mensions of eyes in relation to the head, is evaluated (Burgeon, 1941) n. comb., S. colasposomoides (Bur- in frontal view along a horizontal line at a level of the geon, 1941) n. comb., S. irregularis (Jacoby, 1900) n. minimum width of the frons and the corresponding comb., S. minima (Burgeon, 1942) n. comb., S. nigrita widest point of the eye. The dissected aedeagi are glued (Selman, 1972) n. comb. The identity of S. colaspo- on a card pinned together with the specimen or on the somoides is discussed with designation of a Lectotype same card of the specimen; the dissected female genita- and S. hartmanni sp. n. is described from Zambia and lia are preserved in a plastic micro-vial, pinned together Southern Dem. Rep. of Congo. New data are given for with the specimen. Afroeurydemus flavicans (Harold, 1877) (recorded for Drawings were made with a drawing tube on a Zeiss the first time from Ethiopia, Kenya and Tanzania) with Standard microscope from dried material (aedeagi, an- designation of a Lectotype, Microsyagrus marshalli tennae, legs) or, for spermathecae, soaking temporarily Selman, 1965 (recorded for the first time from Zambia the whole genital apparatus in a solution of lactic acid, and Botswana), Colasposoma blandum Weise, 1904 chloral hydrate and H2O. Drawings were then digitally (recorded for the first time from Zambia), C. tinantae reprocessed. Burgeon, 1941 (recorded for the first time from Zam- bia). The following acronyms are used: AFMT Africa Museum (Tervuren, Belgium) Key words: Chrysomelidae, Eumolpinae, new species, MDcoll Mauro Daccordi collection (Verona, Italy) new name, new combinations, new records, Afrotropi- MFNB Museum für Naturkunde Berlin (Germany) cal Region NME Naturkundemuseum Erfurt (Germany) SZcoll Stefano Zoia collection (Milan, Italy) Introduction Typophorini Among the African Eumolpinae I received for identi- Afroeurydemus adustus sp. n. fication from the Natural History Museum of Erfurt, some species are found to be of particular interest being Type specimens. Holotype % (NME): Kenya SE, Lamu new to science or adding new data to the knowledge prov. 11.4.2004 E of Garsen, Snížek lgt. [printed white of the African fauna. Their study and the examination label]; Holotypus Afroeurydemus adustus sp. n. S. Zoia of material from my private collection also gave me det. 2019 [printed red label]. 305 Paratypes (8 %%, 12 &&): Kenya SE, Lamu prov. 0.30-0.39; length/width ratio: 2.1-2.2-2.4-2.8-2.4- 11.4.2004 E of Garsen, Snížek lgt. (4 %% 6 && 2.4-2.3-2.4-2.6-2.5-3.5. NME; 1 % SZcoll); Kenya, Coast E of Garsen, W of Pronotum transversally convex, more so distally, nearly Witu 7.12.2007 Lgt. M. Snížek (2 && SZcoll); idem, 1.4 times wider than long (1.84x1.32 mm in the holo- 21.4.2008 (1 & MDcoll; 2 %%, 2 && SZcoll); Kenya, type), the maximum width at basal third; base bordered Coast NW of Garsen 22.4.2008 Lgt. M. Snížek (1 & throughout, wider than the distal edge; distal edge with a SZcoll); Kenya, Coast Witu, Kipini 23.4.2008 Lgt. M. border which is strongly impressed at sides and gradu- Snížek (1 % SZcoll). ally totally vanishing through the middle; lateral edges, as seen from above, in a wide nearly regular arch, bor- Diagnosis. An Afroeurydemus characteristic in the dered throughout, border relatively wide, visible from finely and sparsely punctured surface of pronotum, the above in all its length; surface smooth, glabrous, with a uniformly impressed punctures of striae on the whole relatively fine sparse punctation, often leaving a longitu- elytral surface, nearly flat elytral interstriae, nearly uni- dinal impunctate line in the middle of pronotum; a sec- form dark brown coloration of body and elytra. This ondary very small punctation is present but visible only combination of characteristics is not found in any of the at high magnifications (40x-60x and over). Corners of known Afroeurydemus. base of pronotum with a small tooth bearing a seta; se- Description. Habitus as in Figs 1-2; body length of tal insertion of distal corners of pronotum arising on a % holotype, excluding the head, 4.5 mm, of %% para- level with the lateral edges. types 4.1-4.8 mm, of && paratypes 4.3-5.5 mm. Scutellum ogival, nearly as long as wide at base, Body dark brown, somewhat paler on metathoracic smooth, impunctate. episterna, mesosternum and lateral arms of prosternum; Surface of hypomera smooth, glabrous, impunctate; dorsum dark brown with elytra somewhat paler. Mandi- distal margins of proepisterna slightly convex, a little bles dark brown with black apices, palpi yellow ochre, produced forward and covering a part of the eyes, sep- antennae brown with somewhat darker articles 7th-11th, arated from ventral edge of prosternum by a relatively legs reddish brown with darker apices of femora and deep sulcus to recover antennae in a defense attitude. proximal third of tibiae. Prosternum in the middle nearly 2.2 times longer than Frons (Fig. 3) relatively narrow, moderately convex, wide between procoxae, longitudinally slightly convex, with a light and short longitudinal median sulcus; surface with a strong punctation bearing a very fine hyaline pu- smooth, glabrous, with a fine sparse punctation, space bescence. Ventral side of body with a relatively long, between two adjacent punctures wider than diameter of sparse, very fine hyaline pubescence, a little denser on a puncture; eyes large, strongly convex, protuberant but abdominal sternites. not exceeding the width of distal corners of prothorax, Mesoventrite nearly 1.8 times longer than wide between emarginate at their inner border, space between the in- mesocoxae, surface smooth with a few punctures; ner borders of eyes is nearly 1.2 times wider than the mesocoxae a little less spaced than procoxae; me- width of an eye in frontal view; ocular sulci relatively soepimera smooth, with a very fine microreticulation. deeply impressed, not widened to rear, close to eye bor- Metaventrite in its middle nearly 1.3 times longer der; clypeus with a fine sparse punctation that is hardly than space between metacoxae, impunctate, smooth; stronger than on frons, separated from frons by a light metacoxae more spaced than mesocoxae; metathoracic impression, distal border lightly concave. Penultimate episterna tapering to rear, nearly 4 times longer than article of maxillary palp nearly 1.2 times longer than wide, nearly impunctate, glabrous and with fine mi- wide, ultimate narrowing from the basal third, nearly croreticulation. 2.7 times longer than wide and 1.8 times longer than Elytra moderately convex, 1.3 times longer than wide the penultimate. Antennae (Fig. 41) relatively robust, (in holotype: elytral length in dorsal view 3.28 mm, reaching the basal fourth of elytra. Antennomeres mod- distance from base of scutellum to elytral apex 3.60 mm; erately elongated, 7th-10th lightly widened. Length of width at humeri 2.40 mm, maximum width 2.56 mm); antennomeres of left antenna of % holotype, in mm: sub-basal impression very light; elytral lateral edges 0.28-0.25-0.19-0.25-0.24-0.22-0.28-0.29-0.31- nearly straight and a little widening from humeri to 306 about 3/5 of their length, then regularly bent to the Afroeurydemus adustus sp. n. is a polytypic form, wide- apices; apices in a slightly acute angle. Elytra with ten spread in an area from Kenya to Namibia. Examined longitudinal striae of punctures; punctures moderately populations from Tanzania and northeastern Namibia strong, clearly impressed on the whole elytral surface; show peculiar aedeagal morphology and are here de- interstriae nearly flat on the elytral discus, feebly con- scribed as distinct subspecies. vex on elytral sides, particularly in females; surface Besides these, I examined two specimens of A. adustus of interstriae smooth, glabrous, impunctate; humeri s. l., from different sites in northwestern Zambia which round, slightly acutely prominent, smooth, impunc- greatly differ in their aedeagal characteristics, both tate. Elytral borders in large part visible in dorsal view. with respect to each other and with respect to the three Epipleura glabrous, moderately wide and subparallel taxa here described. These two specimens could be a in basal third, then regularly narrowing to rear, im- further sign of a more complex situation than expected punctate, smooth. from populations apparently rather uniform in exoskel- Metathoracic wings fully developed.