Bipectinata, Wichard & Espeland & Müller & Wang, 2020

Wichard, Wilfried, Espeland, Marianne, Müller, Patrick & Wang, Bo, 2020, New species of caddisflies with bipectinate antennae from Cretaceous Burmese amber (Insecta, Trichoptera: Odontoceratidae, Calamoceratidae), European Journal of Taxonomy 653, pp. 1-17 : 13

Genus Bipectinata gen. nov.

urn:lsid:zoobank.org:act:7C273977-F413-47A4-947F-60758591D2A0

Type species

Bipectinata orientalis gen. et sp. nov.

Diagnosis

The genus Bipectinata gen. nov. resembles the odontocerid genus Palaeopsilotreta , sharing the autapomorphy of bipectinate antennae, but is distinguished from Palaeopsilotreta by the shape of the rami of the bipectinate flagellomeres. In Palaeopsilotreta , the rami are uniformly slim and about as long as the flagellomeres; in Bipectinata gen. nov., the thin rami gradually enlarge into a small club and are always longer than the flagellomeres. Furthermore, in Palaeopsilotreta the fore- and hindwing venation is characterized by the presence of forks I, II, and V and by the loss of forks II and IV, whereas in forewings of Bipectinata gen. nov. forks I, II, III, IV and V are present. In addition, in Palaeopsilotreta , the thyridial cell is absent, while it is closed in Bipectinata gen. nov. Based on the combination of wing venation, spur formula and 5-segmented maxillary palpi, we place this genus in the Calamoceratidae .

Etymology

The genus is named for its bipectinate antenna.

Description

Male antennae partially bipectinate, medially having 16 bipectinate flagellomeres, followed by 18 simple flagellomeres without rami. Maxillary palps 5-segmented, terminal segment not flexible or annulate. Ocelli absent. Forewing with forks I, II, III, IV, V; discoidal cell and thyridial cell closed, medial cell absent. Hindwing with forks I, II, II, V; discoidal, medial and thyridial cells absent. Tibial spurs: 2/4/4. Male genitalia with 2-segmented inferior appendages.