Eucamaragnathus desenderi, a new ground beetle species from Africa (Coleoptera, Carabidae) Assmann, Thorsten Drees, Claudia Matern, Andrea Schuldt, Andreas ZooKeys 2011 100 37 46 urn:lsid:zoobank.org:act:7F180D34-C5F8-4D79-AC05-E2F727CAD2E3 Assmann, Drees, Matern & Schuldt Insecta Carabidae Eucamaragnathus CoL Animalia Eucamaragnathus desenderi Coleoptera 1 38 Arthropoda species desenderi  Type material: Holotype male: "ZAMBIA NE. 2004 / 240 km SE Mansa / 25 km SE Mukuku / 29.11. Snizek, Tichy"(CAS). Paratypes: 13 males and 8 females, same as holotype (CAS, CFA, CST, CSH, CSS, CWR). 2 males and 4 females: "RSA, NW prov. 2001 / Klerksdorp, 20 km W / of Bothaville, Vaal riv. / M. Snizeklgt. 12.1." (CAS, CWR).  Diagnosis: A macropterous species of average size for the Eucamaragnathus castelnauigroup, black, pronotum transverse, sides sinuate with posterior angles acute, transverse anterior impression punctulate, transverse posterior impression strongly punctate, elytral striae continued to apex. Habitus see Fig. 1.  Figure 1. Eucamaragnathus desenderisp. n., habitus; holotype.  Description: Body length 8.8 - 10.6 mm; width 3.6 - 4.0 mm (holotype 10 mm and 3.8 mm, respectively).  Colour: Black, without iridescence, not metallic; mandibels, mouth-parts, antennae, and tarsi partly infuscate.  Head (Figs 1 and 2) large, about one fourth less wide than pronotum (HW: 2.0 - 2.4 mm, holotype: 2.3 mm; ratio HW/PW: 0.75 - 0.78). Eyes fairly large, their diameter (seen in dorsal view) about four tenth of head width; protected posteriorly by lateral extension of the cranium. Antennae robust, scape longer than the following 4 antennomeres, antennomeres 5 - 11 with dense and fairly fine setae. Mesal edge of mandibles markedly serrate (mandible teeth triangular shaped). Two pairs of supraorbital furrows. Frons not punctate, except basal close to pronotal anterior margin.  Figure 2. Eucamaragnathus desenderisp. n., basal part of head, pronotum, basal part of elytra; holotype.  Pronotum (Fig. 2) transverse (PW: 2.6 - 3.1 mm, holotype: 3.0 mm; PL: 1.9 - 2.2, holotype: 2.0 mm), widest prior to middle (basally of lateral seta). Pronotum at the base broader than at the apex (PAW: 2.2 - 2.6 mm, holotype: 2.5 mm; PBW: 2.3 - 2.8 mm, holotype: 2.7 mm). Anterior margin moderately straight; anterior angles pronounced, but rounded; lateral sides clearly sinuate; posterior angles acute, basal margincurved. Anterior transverse impression sparsely punctulate; lateral beads deep, not punctate; basal transverse impression deep, markedly punctate and connecting basal foveae; basal foveae deep, punctate and delimited externally by a keel-like carina without punctations.  Legs (Fig. 1) similar to those found in other Hiletinispecies. Males with small tooth on profemur. Single long guard seta of tarsus 5 much longer than claws. Males with spatulate adhesive setae beneath protarsi 1 - 3 and mesotarsus 1.  Elytra (Figs 1 and 3) with pronounced humeri, slightly enlarged to the end of the second third (EL: 4.8 - 5.9 mm, holotype: 5.75 mm; EW: 3.3 - 3.9 mm, holotype: 3.7 mm). Basal margin reduced, reaching 6th interval. Scutellar striae short; elytral striae deep and punctate, at the apex less impressed, but well visible; intervals flat, at the apex slightly convex. Discal setae of third stria in punctiform depressions.  Figure 3. Eucamaragnathus desenderisp. n., apex of elytra; paratype.  Surface with microsculpture of irregular and weak mesh patterns, meshes mainly transverse; a clear micropunctation on head, pronotum and elytra (20 xmagnification); surface shiny.  Male genitalia (Figs 4 and 5). Median lobe with ostium dextral. Both parameres multisetiferous, the setae of the narrow right paramere are longer than those of the broad left one.  Figure 4. Eucamaragnathus desenderisp. n., male genitalia, left lateral aspect of median lobe (aedeagus); paratype.  Figure 5. Eucamaragnathus desenderisp. n., male genitalia, ventral aspect of parameres; paratype.  Comparisons: Due to form of mandible teeth and long single guard seta of last tarsomere the new species belongs to the genus EucamaragnathusJeannel, 1937. The small tooth of profemora in males, the dextral position of the ostium of the aed eagusand elytral striae continued to the apex place the new species in the Eucamaragnathus castelnaui( Bocande, 1849) group (cf. Erwin and Stork 1985) which is exclusively distributed in Africa. The new species is similar to Eucamaragnathus castelnauiand Eucamaragnathus fissipennis(Ancey, 1882). The best character to separate Eucamaragnathus desenderisp. n. from the nominate species of the group is the shape of the pronotum and especially the weak punctation of the pronotal anterior impression which is markedly punctate in Eucamaragnathus castelnaui. In comparison to the other species of the group, Eucamaragnathus desenderisp. n. has acute pronotal anterior angles, but they are less produced than in Eucamaragnathus oxygonusChaudoir, 1861. Moreover the median lobe, especially its internal sac structures, of Eucamaragnathus desenderisp. n. differs from all other species of the given group. From Eucamaragnathus fissipennisthe new species can be easily distinguished by stronger punctation of posterior transverse impressions of pronotum (Figs 2 and 6), stronger punctation of elytral striae, which are weaker at the apex, but still well visible (Figs 3 and 7) and a microsculpture with stronger punctation.  Figure 6. Eucamaragnathus fissipennis, basal part of elytra. From Eucamaragnathus bocandei(Alluaud, 1914), which forms an own species group, the new species differs by its strong punctation of pronotal posterior impression and from Eucamaragnathus suberbiei(Alluaud, 1914) it can be separated by the size of tooth on ventral surface of profemur in males. For better distinction we present an identification key for the known members of the African Eucamaragnathusspecies (see below).  Etymology: It gives us great pleasure to dedicate this species to the memory of Konjev Desender, the well known Belgian carabidologist who recently deceased. We had many scientific meetings, excursions and productive collaborations with him, and we will honor his memory. An obituary is given by  Loevei(2011)including a list of his publications.  Distribution: Up to now Eucamaragnathus desenderisp. n. is only known from the two sites in Zambia and South Africa. The population from Zambia (close to the border to Congo) lies in the tropical part of Africa fitting well to the main distribution area of the tribe in tropical Africa. In contrast, Bothaville in South Africa, the other site from where Eucamaragnathus desenderisp. n. is known, is located between the 27th and 28th degrees of southern latitude, doubtless in the subtropical realm, and seems to be the most southern known recordof a Hiletinispecies in Africa (and worldwide). The wide distribution of Eucamaragnathus desenderisp. n. in Africa is not unusual for a Hiletinispecies (cf. the large distribution areas of Hiletus alluaudi(Jeannel, 1937) and Eucamaragnathus fissipennis, Erwin and Stork 1985).  Eucamaragnathus desenderisp. n. seems to co-occur with Eucamaragnathus fissipenniswhich is distributed in tropical East Africa and south-eastern Africa. Eucamaragnathus oxygonusis known only from one locality in South Africa. All other African species of the genus Eucamaragnathusshow - so far known - an allopatric distribution ( Eucamaragnathus suberbieiis an endemic of Madagascar, Eucamaragnathus castelnauiand Eucamaragnathus bocandeioccur exclusively in tropical western Africa, Erwin and Stork 1985).  Habitat: The specimens were caught at light and habitat preferences are therefore unknown. Together with the holotype of Eucamaragnathus desenderisp. n., a single Hiletinispecimen of Hiletus katanganusBasilewsky, 1948 has been found. We compared this specimen of the rarely recorded species with the type material preserved in the Africa Museum (collection of Basilewsky) and detected morphological differences. Without more material (especially males) it seems to be impossible to assign specimens conclusively to this species (see also the note in Erwin and Stork 1985: 431).  Key to the African species of EucamaragnathusJeannel This new identification key is based on the one presented by Erwin & Stork (1985), but it is modified and illustrated additionally.    Fig. 7  Eucamaragnathus fissipennis   Fig. 3   Eucamaragnathus suberbiei   Eucamaragnathus oxygonus   Eucamaragnathus bocandei   Eucamaragnathus castelnaui   Eucamaragnathus desenderi  Figure 7. Eucamaragnathus fissipennis, apex of elytra.