The species of the genus Xestocephalus found in Colombia are reviewed. There are 12 species that were previously described, and 40 new species included in this study. A key to the species now known for Colombia is included.

At present, most species of Hercostomus were divided into 25 species groups in China. In this paper, we proposed a new species group, the Hercostomus furcatus group, on the basis of the black body and legs, the yellow middle and lower postocular bristles, and the furcated cercus with distinct marginal denticles. Here one new species, Hercostomus liangi sp. n., from China and it is described as new to science. A key to species groups of Hercostomus is provided.

An annotated list of the Meloidae family in Turkey and a zoogeographical study is presented. The Turkish fauna consists of two subfamilies, 23 genera, and 177 species. The Eastern Anatolia region was found to be the most diverse with 98 species. The fauna of the Aegean and Marmara regions of Turkey share the most similarities compared to other regions. Overall, the Turkish Meloidae fauna is more similar to that of Syria than to that of other adjacent countries. As a result of the evaluations, it is evident that Cerocoma dahliKraatz, 1863, C. kunzei Frivaldszky von Frivald, 1835, C. scovitzi intermediaMařan, 1944, C. ephesicaReitter, 1885, Hycleus zebraeusMarseul, 1870, Mylabris calida Pallas, 1782, M. fabricii Sumakov, 1924, M. quadripunctata Linnaeus, 1767, and Stenodera caucasica Pallas, 1781 are distributed throughout Turkey, and Euzonitis sexmaculata Olivier, 1789 is present both in Turkey and all adjacent countries.

The adult male of Xenos colombiensis n. sp. is described from a specimen extracted from the pupal case of its host, Polistes meyersi. While several species of Strepsiptera are known to parasitze species of Polistes in South America, this is the first species known to parasitize P. meyersi. An identification key is provided for adult males of Xenos species parasitizing Polistes species in the New World.

Lithobius (Ezembius) brachyspinipes sp. n. (Lithobiomorpha: Lithobiidae), recently discovered in Yiyang County, Luoyang City, Henan Province, China, is described, is morphologically similar to Lithobius (Ezembius) multispinipesPei et al, 2016 from Xinjiang Autonomous Region, but is distinguishable by having a different size of the posterior two ocelli, a different morphology of the second article of the female gonopod, and apical claw third article of female gonopods, and legs 14 plectrotaxy. A table of the main morphological characters of Chinese Lithobius (Ezembius) species is presented.

The B. talpa species complex includes 8 valid species and 4 synonyms, including: Bothroponera cribrata, B. fugax, B. pachyderma (= B. pachyderma var. attenatasyn. nov., = B. pachyderma var. postsquamosasyn. nov., = B. pachyderma var. funereasyn. nov.), B. rubescens, B. sanguinea, B. sculpturata (= B. mlanjiensissyn. nov.), B. talpa (= Psalidomyrmyx clavicornis) and B. zumpti. These species share similar characters such as the shape of the clypeus, the relative length of the antennal scape, mandibular shape and sculpture. The anterior medial margin of the clypeus is convex or straight with a slightly concave anterior border. The scape does not reach or barely reaches the posterior lateral corner of the head. The mandibles are triangular with striae and 6–7 teeth. There is no metatibial gland on the distal anterior surface of the posterior tibia. Diagnoses, descriptions, comparisons, illustrations, distributions, photographs and other ecological and biological information are provided. A taxonomic key is provided for the worker caste. Key words: Afrotropical, ants, Formicidae, biodiversity

Camponotus planatus Roger (Hymenoptera: Formicidae) is a broadly distributed New World carpenter ant. Here, I document the geographic distribution of C. planatus and consider evidence concerning where this species may be native, particularly whether it is native to Florida. To evaluate the distribution of C. planatus, I compiled and mapped specimen records from >1500 sites. Although, C. planatus was originally described from Cuba, it remains uncertain whether it is native or exotic there. In addition to scattered records across tropical South America, C. planatus shows a largely continuous continental distribution from Panama through Central America and Mexico to southeastern Texas. Across this continental range, C. planatus shows notable color variation, suggesting that it is native to this region. In Texas, C. planatus records dating to before 1980 are spread across most of its known range. However, eight of the nine northernmost records date to 2014 or later, including all six records from the Houston area in East Texas. This pattern suggests that C. planatus is native to Texas, but populations there appear to have recently expanded, perhaps due to climate change. Camponotus planatus populations in Florida, the Bahamas, and Mississippi are probably non-native. In Florida, C. planatus was first found in Key West in 1887, but populations appear to have greatly expanded, particularly since 1980, and now extend as far north as Jacksonville. Due to continued climate change, C. planatus may soon be able to extend its range all along the Gulf coast from Texas to Florida.

Pseudothilmanus Pic, 1918 is a genus of beetles currently placed in Rhagophthalmidae. The species P. alatus Pic, 1918 and P. marginatus Pic, 1918 were described based on single holotypes from India with little descriptive information. Later, in a revision of the genus, a new specimen of P. alatus was examined, but also without specific locality. This paper provides the description of the wing venation and new distributional records for this genus, including the first record in Nepal.

Morphologies of male genitalia of Elateridae (Insecta: Coleoptera) were examined comprehensively by using scanning electron microscopy (SEM). Aedeagal ultrastructures of 65 species were investigated in detail. New morphological structures including small pustules on the apical part of median lobe, small pits with short spine on median lobe and parameres and spines and teeth of inner sac of median lobe were observed for the first time. The long and short bristles of male genitalia were examined comprehensively. Systematic value of these structures are evaluated within examined genera and subfamilies by using a cluster analysis. These morphological structures are heterogeneous within the subfamilies. Consequently, results of cluster analysis exhibit that the observed structures can not be accepted as taxonomical characters for differentiating subfamilies with the exception of the diagnosis of some genera.