Chironomid communities of the upper St. Croix River, Wisconsin, were sampled for pupal exuviae at four locations monthly from April to October, 2007. Species richness was very high, with 252 species from 73 genera, dominated by the subfamilies Chironominae and Orthocladiinae. Most studies of lotic systems find fewer than 150 chironomid taxa, and often less than 100. The high richness may be due to regional conditions that support diverse aquatic communities, such as thermal regime, typical landscape patterns such as elevated mid-order stream diversity or increased β-diversity in headwaters, or the collection method which can detect species from adjacent habitats. There were 35 species that are atypical of lotic systems and some may have occupied microhabitats or adjacent habitat that more closely matches their preferences. Twenty-one species, mostly in Orthocladiinae, had range expansions into the western Great Lakes region or appear to be previously undescribed for the Nearctic. Sixty morphotypes, dominated by 41 Chironominae, did not fit any published exuviae descriptions.

The genus Dysgonia Hübner, [1823] from Turkey is reviewed and one newly recorded species, D. rogenhoferi (Bohatsch, 1880) is reported. The generic and distinctive morphological characters, based on all species in Turkey, are summarized. Illustrations of external features and genitalia are presented.

A preliminary study was performed to detect the sucking lice (Insecta, Phthiraptera: Anoplura) on small mammals in different localities of Turkey, between the years of 2017–2018. Six specimens of sucking lice were collected from six different small mammalian species belonging to five different genera. The lice were identified as Polyplax borealis Ferris, Polyplax reclinata (Nitzsch), Polyplax serrata (Burmeister), Hoplopleura acanthopus (Burmeister) and Hoplopleura affinis (Burmeister). Polyplax borealis, P. reclinata, H. acanthopus and H. affinis are here reported from Turkey for the first time. With the present study, Microtus arvalis for P. borealis, Crocidura suaveolens for P. reclinata, Apodemus uralensis for P. serrata, Nannospalax leucodon and Apodemus witherbyi for H. affinis are reported as new-host associations. In addition, H. acanthopus was reported from Chionomys nivalis in Turkey, for the first time.

Specimens of Metamasius hemipterus (L.) were collected from a nursery in coastal Mississippi during invasive insect pest monitoring by the Mississippi State University Invasive Insect Trapping Team. Specimens were collected during a USDA CAPS palm commodity survey occurring at nurseries and natural areas across the southern half of the state. Within the United States, Metamasius hemipterus is recognized as a pest of sugarcanes, bananas, and palms in Florida. It is also a pest in a variety of economically important fruits in its native range in the Antilles, Central, and South America. It has been implicated as a minor vector of red ring disease in palm, caused by the nematode Bursaphelenchus cocophilus (Cobb). This exotic insect poses a threat to the horticulture industry in Mississippi by vectoring pathogens injurious to palms and damaging other horticultural products.

Strumigenys epinotalis (former Pyramica epinotalis) is a tiny arboreal ant (Hymenoptera, Formicidae) first found in Costa Rica in 1924. The earliest known US specimens were collected in Florida and Louisiana in 2009. I compiled 33 site records of S. epinotalis from nine countries: Brazil (4 sites), Colombia (1), Costa rica (3), Ecuador (1), Mexico (9), Nicaragua (1), Panama (1), Paraguay (1), and the US (12). the US sites come from four states: Alabama (1), Florida (6), Louisiana (4), and Mississippi (1). Strumigenys epinotalis has been recorded from widely scattered Neotropical sites in ranging from Paraguay (24.1°S) to central Mexico (20.1°N). records of S. epinotalis in Louisiana and Florida are from considerably higher latitudes (27.2–30.6°N). the US populations may be non-native, or they could be at the northern end of the ant's native range. Most S. epinotalis records apparently come from relatively intact forests, often in swampy areas, and all known nests have been found up in trees, either inside epiphytes or in cavities within trees. I have sampled ants at hundreds of sites in South and Central Florida through vegetation beating and I have only found this species twice. Given the extreme scarcity of S. epinotalis records across its enormous known range, it seems possible that native populations of S. epinotalis occur all along the Gulf coast of Mexico and the US, but have been overlooked.

Fall webworm, Hyphantria cunea Drury (Lepidoptera: Erebidae) is extremely adaptable and highly invasive in China as a defoliator of ornamental and forest trees. To better understand the chemical orientation of this insect towards its host products, we determined the structure and distribution of antennal sensilla of H. cunea by scanning electron microscopy (SEM). The results showed that the male antenna was bipectinate and the female antenna was serrate, and they made of three parts, a scape, a pedicel, and a flagellum of more than 58 flagellomeres. Based on their morphology, sensilla squamiformia, sensilla basiconica, sensilla trichodea (ST1, ST2, ST3), sensilla chaetica, sensilla coeloconica, sensilla styloconica and Böhm bristles were distinguished on the antennae in both sexes. The putative functions of these sensilla also were discussed with reference to their morphology, distribution, and ultrastructure. We expect these results to help develop further electrophysiological investigations aiming to a better understanding of H. cunea olfaction.

The genus Paraidemona is a completely apterous member of the subfamily Melanoplinae (Acrididae) known only from Texas and northern Mexico. Prior to the present study seven species were known: cohni Fontana and Buzzetti, ruvalcabae Buzzetti et al., fratercula Hebard, latifurcula Hebard, punctata (Stal), olsoni Yin and Smith, mimica Scudder and nuttingi Yin and Smith. Under Paraidemona nuttingi I describe eight new subspecies: hiltoo, jeya, pekwi, tatsinubi, tomoobi, tabu, hanipu and sunipu.

Paraidemona species are confined to grasslands, from grassy coastal margins to dry thorn scrub and oak woodlands of central and western Texas, and prefer short grasses, sometimes intermixed with various broadleaf forbs. The radiation of this genus appears to be recent. Although the genitalia are the principal characters used to define the species, differences can be small and difficult to dissect. Speciation has probably not gone to completion in many cases.

A known species and a new species of Salina Mac Gillivray, 1894 from China are described here, S. yunnanensisDenis, 1929 and S. similis sp. nov.. The original description of S. yunnanensis is simple and only provided colour pattern and a few characters, here, the detail description were added. S. similis sp. nov. is characterised by its colour pattern and chaetotaxy on Abdominal segment I–III as 11-15, 4, 2 respectively.