Plectrocnemia ohlhoffi, Wichard & Xu, 2022

Wichard, Wilfried & Xu, Chunpeng, 2022, The family Polycentropodidae (Insecta, Trichoptera) in mid-Cretaceous Burmese Amber, ZooKeys 1134, pp. 171-183 : 171

Plectrocnemia ohlhoffi sp. nov.

Fig. 4

Diagnosis.

The extinct species Plectrocnemia ohlhoffi sp. nov. is characterized by a pair of elongate inferior appendages, slightly diverging distally and slightly curved apically toward each other. The appendages are weakly concave mesally along their length. In ventral view, each appendage is rounded at the apex and slightly concave in shape apicolaterally, each with a subapical tooth and a weakly projecting apicomesal corner.

Etymology.

The fossil species is dedicated to Rainer Ohlhoff, who donated the type specimen to the Zoological Research Museum Alexander Koenig, Bonn, Germany (ZFMK) for permanent preservation.

Holotype.

♂; Myanmar, Kachin State, Hukawng Valley; exact locality unknown; Mid-Cretaceous Burmese amber inclusion; deposited in the amber collection of the ZFMK; former Rainer Ohlhoff collection; ZFMK-TRI000834.

Description.

Genus as described above. Body well preserved, visible in left ventrolateral view. Forewing length about 4.2 mm. Forewings hyaline, light brown. Antennae about two-thirds as long as forewings with about 30 flagellomeres plus scapus and pedicellus; left antenna incomplete. Inferior appendages elongate, each forming an elongate shell and both inclining towards the genital midline.

Figures

Figure 4. Plectrocnemia ohlhoffi sp. nov. A male holotype (ZFMK-TRI 000834) habitus, ventral view B inferior appendages, left ventrolateral view C drawing of inferior appendages, left ventrolateral view. Scale bar: 1 mm.