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A complementary re-description of Kyphopteryx dorsalis Kimmins, 1947 is presented on the basis of a fresh male and additional females from southeastern Tibet, southwestern China. The hitherto unknown inner structures of the female terminalia are described, as well as further details of the male genitalia. In this study, we also present the first records of Capnia s.l. yunnana Li & Yang, 2011 from Tibet and a formal description of an unassociated Capnia s.l. female collected together with the above species. An updated checklist of the named species of Capniidae and Taeniopterygidae from China is also given.

Arachnida evolved different reproductive strategies in the terrestrial habitats. Knowledge of the morphology of reproductive systems varies depending on the group, and for Opiliones only a few studies exists addressing this topic. Here, we describe the morphology of the male reproductive tract and the spermatozoon of the harvestman Mischonyx cuspidatus (Roewer, 1913). In this species, males have a single testis, a pair of deferent ducts, a seminal vesicle, a propelling organ and a penis. The lumen of the folded seminal vesicle and testis follicles are filled with spermatozoa, suggesting a storage of sperm related to a possible reproductive strategy involving multiple matings. The spermatozoa are aflagellate and ca. 6.5 lm in length. This study sheds light on the knowledge of the harvestman's reproductive biology and life strategy, which can be used in future studies involving Opiliones behavior and systematics. © 2021 American Museum of Natural History. All rights reserved.

Predatory insects have reproductive organs rich in complex changes that may be responsible for the success of their population growth. The species Chrysoperla externa is a predator used in biological control programs in Latin America. However, there is no morphological data about the morphology of the reproductive tract in this insect. This study describes the morphology of the reproductive organs of virgin and mated C. externa male and female. The male has a pair of testes yellow in color and five pairs of accessory glands closely associated with the seminal vesicles. The testis follicles are twisted filled with cysts in different developmental stages. The pair of ovaries in the females shows asymmetry with 9-11 ovarioles per ovary with oocytes in different developmental stages and a spherical spermatheca. Virgin and mated males have no differences in the size of the testes, seminal vesicle, and accessory glands. C. externa females show morphological changes in the reproductive tract according to sexual maturation, which is triggered by mating. The ovary activation occurs after female mating. The ovaries are of merotistic polytrophic type. The spermathecal reservoir is lined by a flattened epithelium with a thin cuticular intima and associated with well-developed muscles. It is concluded that the reproductive tract of C. externa is similar in virgin and mated males and females. Egg production is activated only after mating and the development of reproductive tract structures is faster in mated females.

Species composition of social wasps of the genus Ropalidia from Vietnam is reported, with 24 species having been recorded. Of those, three species are newly recorded for the Vietnamese fauna, namely Ropalidia binghami van der Vecht, 1941, R. parartifex Tan & van Achterberg, 2014 and R. variegata (Smith, 1852). The presence of R. sumatrae (Weber, 1801) in Vietnam is confirmed. An updated key to all recorded species of the genus Ropalidia from Vietnam is also provided.

WOS: 000460041800011 PubMed ID: 31716537 Two species of the genus Orancistrocerus van der Vecht, 1963 from Vietnam are recorded. Of them, a new species, O. altus sp. nov. from Lang Son province in the northern part of Vietnam is described and illustrated. In addition, one subspecies, O. aterrimus nigriceps van der Vecht, 1963 is newly recorded from China. Vietnam Academy of Science and Technology [KHCBSS.01/18-20, NCVCC 09.11/19-19] The present study was supported by the grants from the Vietnam Academy of Science and Technology (KHCBSS.01/18-20 and NCVCC 09.11/19-19 for senior researcher).

WOS: 000453707800009 PubMed ID: 30647350 The genus Orientalicesa has six species, and all of them have been recorded in the Oriental region (including Indonesia, Malaysia, Phillippines, Laos, China). In this paper, the genus Orientalicesa is newly recorded from Vietnam, represented by one species O. confasciatus Tan and Carpenter. This species was mistakenly redescribed as Stenodyneriellus rangpocus Kumar, Carpenter & Kishore, 2017. A new synonym of O. confasciatus is proposed, and that species is a new record for India. Vietnam Academy of Science and Technology [KHCBSS.01/18-20] The present study was supported by a grant from the Vietnam Academy of Science and Technology (KHCBSS.01/18-20) to the first author.

WOS: 000442868600010 PubMed ID: 30313462 A new species of the genus Okinawepipona Yamane from Vietnam is described and figured: Okinawepipona yty Nguyen, sp. nov. (northern Vietnam). Biology of O. yty Nguyen, sp. nov. and O. nigra Nguyen & Xu, 2014 is recorded. A key to the four species known in the genus is provided. Vietnam Academy of Science and Technology [KHCBSS.01/18-20] The present study was supported by the grant from the Vietnam Academy of Science and Technology (KHCBSS.01/18-20).

Notes on the paper wasp of the genus Polistes, Polistes delhiensis Das and Gupta, 1989 (Hymenoptera: Vespidae: Polistinae) from Vietnam are presented. The species has two color forms of the clypeus: brightly colored specimens were collected in the southern part of the range and darker colored specimens were collected in the northern part. Based on morphological and DNA data analysis, it is confirmed that both color forms belong to Polistes delhiensis. The male of this species is described for the first time and its fully-developed nest is also described.

WOS: 000428530200005 PubMed ID: 29690269 Twenty seven species of the subgenus Polistella Ashmead, 1904 are recorded from Vietnam. Polistes chuyangsin Nguyen & Nguyen sp. nov. and its nest are described and figured. A pictorial key to Vietnamese species of the subgenus is provided. Vietnam National Foundation for Science and Technology Development (NAFOSTED)National Foundation for Science & Technology Development (NAFOSTED) [106-NN.05-2014.40] We are grateful to James M. Carpenter (American Museum of Natural History) for the English proofreading of the manuscript. We thank section editor, Kevin Williams, and two anonymous reviewers for their critical comments. The present study was supported by the grant from the Vietnam National Foundation for Science and Technology Development (NAFOSTED: no. 106-NN.05-2014.40).

The third instar larva of Gepus gibbosus Holzel, 1968 are described and figured for the first time using light and scanning electron microscopy. The females were collected from Derik, Mardin Province, Turkey and maintained in the laboratory. The morphology of different parts of the larva such as head, mandibles, and antennae are described and illustrated. G. gibbosus is new for the Turkish fauna .