A revised key to the living and fossil families of Strepsiptera, with the description of a new family, Cretostylopidae by Kathirithamby, J, Engel, MS

The first twisted-wing parasitoid in Eocene amber from north-eastern China (Strepsiptera: Myrmecolacidae) by Wang, B, Kathirithamby, J, Engel, MS

A new dustywing (Neuroptera: Coniopterygidae) from the Early Cretaceous amber of Spain by la Fuente, R, Delclòs, X, Engel, MS, Peñalver, E

Beaded lacewings (Neuroptera: Berothidae) in amber from the Lower Cretaceous of Spain by Perez-De-La Fuente, R, Peñalver, E, Engel, MS

A defensive behavior and plant-insect interaction in Early Cretaceous amber – The case of the immature lacewing Hallucinochrysa diogenesi by La Fuente, R, Delclòs, X, Peñalver, E, Engel, MS

A soil-carrying lacewing larva in Early Cretaceous Lebanese amber by La Fuente, R, Peñalver, E, Azar, D, Engel, MS

Straight-jawed lacewing larvae (Neuroptera) from Lower Cretaceous Spanish amber, with an account on the known amber diversity of neuropterid immatures by Pérez-de la Fuente, R, Engel, MS, Delclòs, X, Peñalver, E

The first adult mantis lacewing from Baltic amber, with an evaluation of the post-Cretaceous loss of morphological diversity of raptorial appendages in Mantispidae by Baranov, V, Pérez-de la Fuente, R, Engel, MS, Hammel, JU, Kiesmüller, C, Hörnig, MK, Pazinato, PG, Stahlecker, C, Haug, C, Haug, JT

Genomic data provide insights into the classification of extant termites by Hellemans, S, Rocha, MM, Wang, M, Romero Arias, J, Aanen, DK, Bagnères, A-G, Buček, A, Carrijo, TF, Chouvenc, T, Cuezzo, C, Constantini, JP, Constantino, R, Dedeine, F, Deligne, J, Eggleton, P, Evans, TA, Hanus, R, Harrison, MC, Harry, M, Josens, G, Jouault, C, Kalleshwaraswamy, CM, Kaymak, E, Korb, J, Lee, C-Y, Legendre, F, Li, H-F, Lo, N, Lu, T, Matsuura, K, Maekawa, K, McMahon, DP, Mizumoto, N, Oliveira, DE, Poulsen, M, Sillam-Dussès, D, Su, N-Y, Tokuda, G, Vargo, EL, Ware, JL, Šobotník, J, Scheffrahn, RH, Cancello, E, Roisin, Y, Engel, MS, Bourguignon, T