Abstract. Cuticular parts of the spermatheca and associated vaginal structures (chiefly the ring sclerites of the parietovaginal glands) have been examined and compared in 190 cydnid species representing 65 genera and all five subfamilies currently recognized in the family (Amnestinae, Cephalocteinae, Cydninae, Garsauriinae, Sehirinae). Four species belonging to genera formerly included within the Cydnidae (Dismegistus, Parastrachia, Thaumastella, Thyreocoris) were also examined. Morphology of the three main parts of the spermatheca [seminal receptacle (distal bulb), intermediate part (pump apparatus), spermathecal duct] is described. Four main types of spermathecae can be recognized from the distal receptacle and the intermediate part: the amaurocorine type (in Sehirinae: Amaurocorini), amnestine type (in Amnestinae), garsauriine type (in Garsauriinae), and "cydnoid" type (in Cephalocteinae + Cydninae: Cydnini, Geotomini + Sehirinae: Sehirini). No synapomorphy of these types was found which suggests that the currently conceived Cydnidae are not monophyletic. Moreover, out of these four types only the "cydnoid" is typically pentatomoidean due to the presence of an intermediate part usually well delimited by two flanges and having always an unsclerotized flexible zone as well as two internal cuticular structures (septum and fretum) partly obstructing the lumen. The simple tubular amaurocorine type is unusual and aberrant within all Pentatomoidea. The amnestine and garsauriine types display some similarities with taxa outside the Pentatomoidea, especially with some lygaeoid or coreoid spermathecae, mainly in the structure of the intermediate part not delimited proximally (absence of flanges) and devoid of the flexible zone. Within the "cydnoid" type, six spermathecal facies can be characterized principally according to the shape of both the apical reservoir along with the intermediate part, and the differentiations of the spermathecal duct. It has been impossible to find any synapomorphy for all species and for the six facies belonging to the "cydnoid" type of spermatheca. We suggest that the Cydnidae as defined presently are probably a polyphyletic group; moreover its main "cydnoid" branch, called by us Cydnidae sensu stricto (Cephalocteinae + Cydninae + Sehirinae: Sehirini) seems to be relatively recent among the Pentatomoidea. Nishadana and Nishocoris are transferred from Garsauriinae back to Cydninae: Cydnini and the tribe Amaurocorini (Sehirinae) is upgraded to a separate subfamily Amaurocorinae stat. nov. Moreover, we regard the Geotomini and the Sehirini both as non-monophyletic and we indicate that by appending them sensu lato (Geotomini "s. l.", Sehirini "s. l.")

An annotated list of the triatomine species present in

Rhodnius amazonicus Almeida, Santos & Sposina, 1973 was described as a species close to R. pictipes Stål, 1872 on the basis of a single female specimen. In their revision of the Triatominae, Lent and Wygodzinsky (1979) synonymized this species with R. pictipes on the basis of a photograph of the holotype of R. amazonicus. They argue that the specific characters are not convincing, or at least doubtful, and they consider this moreover partly damaged female as an abnormal specimen of R. pictipes.The recent discovery of two atypical specimens among close to 100 R. pictipes from French Guiana, allows us to reconsider this question. These two specimens, one male and one female, correspond exactly to the description made by Almeida et al. (1973); moreover, the male genitalia show clear differences from those of R. pictipes.

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Abstract. Notes on Micrauchenus lineola (Fabricius 1787), a termitophilous and termitophagous species (Reduviidae: Harpactorinae, Apiomerini). Unlike the other Apiomerini, which are mostly polyphagous predators, Micrauchenus lineola seems to feed exclusively on termites. Immatures of different stages have been found in galleries of a termit nest (Nasutitermes sp.) where they are apparently well tolerated by their preys. M. lineola can be distinguished from the other Apiomerini by some distinctive morphological features: -short and convex head; -right maxillary stylets strongly barbed; -absence of tarsal sulcus on the fore legs. The barbed right maxillary stylet shows some similarities with those of other termitophagous reduvids belonging to the subfamilies Salyavatinae and Sphaeridopinae.Résumé. Contrairement aux autres Apiomerini, des prédateurs souvent polyphages vivant sur des plantes diverses, Micrauchenus lineola semble se nourrir exclusivement de termites. Des immatures à différents stades ont été trouvés dans les galeries d'une termitière (Nasutitermes sp.) où ils sont apparemment bien acceptés par les termites dont ils se nourrissent. Quelques particularités morphologiques sont précisées chez l'adulte : -tête courte et convexe, -stylet maxillaire droit pourvu de longs processus lamelliformes, -absence de sillon tarsal sur les pattes antérieures. Le stylet maxillaire droit montre des similitudes avec ceux d'autres Reduviidae termitophages appartenant aux Salyavatinae et aux Sphaerodopinae.

BackgroundSome species of obligate cavernicolous beetles are known to possess a unique feature—a contraction of the larval cycle. In contrast to many other subterranean beetles, life-cycle contraction in Trechini ground beetles (Carabidae) is correlated with a reduction in the number of eggs and a drastic reduction in the number of ovarioles. This remarkable peculiarity has only been reported for a small number of closely related species.ResultsWe give a description of the female internal reproductive system for six species of Trechini, including five subterranean species, with a particular focus on the western Pyrenean radiation of Aphaenops, a group for which nothing is known regarding the early life stages. We redescribe the internal female genitalia of A. crypticola Linder. Study of the ovarioles allowed us to infer the postembryonic development of the larvae for each species examined. We then used a phylogenetic framework to recognize two independent reductions in the number of ovarioles in the Pyrenean lineage. We discuss the multiple convergent evolutions in ovariole number and the potential link between a reduction of ovariole number and troglobiomorphism in a phylogenetic context.ConclusionsThere is an extreme reduction in ovariole number and size within the species studied; the eggs produced by small ovarioles have a remarkably large size. A reduction to one ovariole has occurred independently at least twice in this subterranean group. A reduction in the number of ovarioles in ground beetles is one of the striking consequences of subterranean specialization and it is correlated with another remarkable adaptation of subterranean beetles, a reduction in the number of larval instars.