Parepidosis kaltisbackensis, Jaschhof & Jaschhof, 2020

Jaschhof, Mathias & Jaschhof, Catrin, 2020, The Porricondylini (Diptera: Cecidomyiidae: Porricondylinae) of Sweden revisited: descriptions of nineteen new species of ten genera, including a new genus, Zootaxa 4728 (2), pp. 151-182 : 165

Parepidosis kaltisbackensis sp. nov.

Figs 23–24

Diagnosis. This is a typical Parepidosis , distinguished by the following combination of genitalic characters ( Fig. 23 ). The slightly bent gonostylus has a large pectinate claw apically (↓ 3); the apex of the aedeagal apodeme is spatula-like broadened (↓ 4); and the parameres, which form a reverse, widely open U, have the two knobs lying close together (↓ 5). Females and preimaginal stages of P. kaltisbackensis are unknown.

Other male characters. Body size 2.3 mm. Head. Eye bridge 2–3 ommatidia long at vertex.Antenna appreciably longer than body, about as long as wing. Scape and pedicel lighter than flagellum. Circumfila on flagellomeres 1–13. Neck of fourth flagellomere 1.8 times as long as node ( Fig. 24 ). Palpus 1.3 times as long as head height, 4 setose, subcylindrical segments, apical segment longest of all. Thorax. Pronotum with 3 setae; anepisternum with 1 seta; anepimeron with 6 setae. Wing. Length / width ratio 2.9. M 1+2 absent. Wing fold pigmented. Legs. Foreleg: femur slightly shorter than tibia, tibia 1.1 times as long as T 2. Claws with 1 large and 2–3 smaller teeth basally. Empodia vestigial. Genitalia ( Fig. 23 ). Ninth tergite large, with broadly rounded posterior edge. Gonocoxal synsclerite: ventral emargination deep, extending beyond gonocoxal midlength, with narrow, sclerotized rim basally; a large non-setose portion ventrobasally; dorsoposterior portions subtriangular, markedly protruding beyond ventroposterior edge. Gonostylar apex broadly rounded; beneath the claw 2–3 long bristles. Aedeagal apodeme shorter than gonocoxae; ducts of accessory glands conspicuous.

Etymology. The name refers to Kaltisbäcken, a nature reserve in northern Sweden renowned for its diversity of rare and threatened species, including many insects. The lower parts of the Kaltisbäcken valley, which are covered with old-growth taiga rich in big aspen trees, is type locality of this new species.

Type material. Holotype. Male , Sweden, Lule Lappmark , Jokkmokk, Kaltisbäcken Nature Reserve (E of stream), old-growth herb-rich taiga with plenty of aspen trees, 10 July 2016, aspirator, M. Jaschhof (spn. CEC 2084 in NHRS).

Figures

FIGURES 19–24. Male morphology of Oelandyla rostrata (19–22) and Parepidosis kaltisbackensis (23–24), holotypes. 19: Basitarsus of foreleg, lateral. 20: Fourth flagellomere, lateral. 21: Genitalia, ventral. 22: Wing, dorsal. 23: Genitalia, ventral. 24: Fourth flagellomere, lateral. Scales for 19–21 and 23–24, 0.05 mm; for 22, 0.50 mm. Arrows refer to characters described in the diagnoses.