Cinco nuevas especies de Tachygerris (Hemiptera: Gerridae: Gerrinae) y nuevos registros para Colombia

Abstract

Cinco nuevas especies de Tachygerris (Hemiptera: Gerridae: Gerrinae: Tachygerrini) para Colombia son descritas, Tachygerris chocoensis sp. nov., Tachygerris florianae sp. nov., Tachygerris moreirai sp. nov., Tachygerris paramillensis sp. nov. y Tachygerris piedemontanus sp. nov. Se incluyen nuevos registros de distribución departamental para T. adamsoni, T. dentiferus, T. opacus, T. tucanensis y T. tumaquensis, se registran para el país las especies T. pulcherrimus y T. tuberculatus. Se presenta una clave para la identificación de las especies colombianas de Tachygerris.

New records of Gerridae (Insecta, Hemiptera, Heteroptera) from northern South America

“…indentata constitute distribution expansions. The first was recently described from Vaupés department, Colombia (Morales and Castro 2013), then had its distribution expanded to the northwest (Boyacá department), west (Cauca department), and south (Amazonas department) (Mondragón-F. et al 2017). Here, we extend its known distribution by about 600 km to the northeast, in the Venezuelan Amazonas state.…”

“…The females display a short posterior projection on the last abdominal laterotergite (= connexival spine); and the posterior margin of abdominal sternum VIII protruding, slightly exceeding the posterior projections of the laterotergites, with three small lobes(Morales and Castro 2013).Distribution. COLOMBIA: Amazonas(Mondragón-F. et al 2017), Boyacá(Mondragón-F. et al 2017), Cauca(Mondragón-F. et al 2017), Vaupés(Morales and Castro 2013). VENEZUELA: Amazonas (this work).Subfamily Trepobatinae Tribe MetrobatiniMetrobates amblydontiNieser, 1993 Figures 2B, 8…”

“…Recent studies on the Gerridae from Colombia show an increasing interest in the taxonomy and diversity of the family locally, including the description of new species (e.g., Mondragón-F. et al 2017;Molano et al 2017aMolano et al , 2017bMolano et al , 2018Floriano et al 2019), new distribution records (e.g., Padilla-Gil 2017), and regional surveys (e.g., Moreno et al 2018). Unfortunately, the same is not true for Venezuela, where only a few studies concerning the family have been published so far, mostly restricted to old species descriptions (e.g., Drake and Roze 1954) or new records in a more general context (e.g., Moreira et al 2016).…”

Aquatic and semiaquatic bugs (Insecta, Hemiptera, Heteroptera) from Toluviejo Municipality, Sucre Department, Caribbean region of Colombia

“…Females of T. opacus were identified by the posterior margin of abdominal sternite VII roundly projected in the middle, surpassing the acute and laterally curved spinose projections of the last abdominal laterotergites. Males were recognized by the following combination of characters: fore femur not widened on basal half, without protuberance or tubercle on posterior surface; proctiger elongated, with distal half subtriangular; and pygophore with 2 small teeth on dorsolateral margin, without large dorsal projection (Mondragón et al 2017). Identification.…”

“…Specimens examined have the typical color pattern of T. ujhelyii, where there are no longitudinal dark marks on the pronotum, the anterior margin of the mesonotum is black, all longitudinal dark stripes of this segment reach the posterior margin, and the median longitudinal dark stripe is long, reaching the anterior margin in most cases(Molano-Rendõn et al 2017b). They were distinguished from the recently described T. vallecaucana Molano-Rendón,Mondragón & Morales- Castaño, 2017 by the absence of a posteroventral keel on the male abdomen and of yellow marks on the female metanotum. Pechilín Stream, station 2 (09°26′08″ N, 075°26′15″ W), Claudia Moreno-R., 11.IV.2015 (CMR 087).…”