Javanyphia Tanasevitch 2020, gen. nov.

Javanyphia gen. nov.

Type species: Javanyphia gede sp. nov.

Diagnosis: The genus contains large-sized, linyphiine-like erigonines, with a total length of 2.3-2.4, which are characterized by the following combination of somatic and genitalic characters:

1) Carapace unmodified, eyes normal in size, cephalic pits (= sulci) absent (Figs 7-9).

2) Abdomen with a dorsal pattern (Figs 7-8).

3) Chaetotaxy formula 2.2.1.1; each metatarsus with a trichobothrium; TmI 0.78-0.82.

4) Palpal tibia modified, with a distal claw-shaped apophysis (Figs 21, 23).

5) Paracymbium relatively small.

6) Tegulum with a protegulum (Fig. 21)

7) Median membrane reduced.

8) Distal suprategular apophysis moderately developed (Fig. 25).

9) Embolus relatively short, slightly curved; radix wide, flat; convector absent (Figs 22, 25).

Etymology: The generic name is a combination of two words: “ Java ”, the “terra typica”, and a part of the genus name Linyphia. The gender is feminine.

Species included: Only the type species, Javanyphia gede sp. nov.

Taxonomic remarks: There are many large-sized, robust erigonines in an informal group which show the leg chaetotaxy formula 2.2.1.1 coupled with the presence of a trichobothrium on MtIV, e.g. Gnathonarium Karsch, 1881, Gongylidium Menge, 1868, Ummeliata Strand, 1942, etc. In its habitus the new genus resembles these genera, and especially Tmeticus Menge, 1868, but it has a different palp structure. The palp conformation of Javanyphia gen. nov. is characterized by a simple structure of the distal suprategular apophysis and of the embolic division, and their shapes resemble those of the Palaearctic-West Nearctic Leptorhoptrum robustum (Westring, 1851), which has the chaetotaxy formula 2.2.2.2. This similarity seems to be only a superficial resemblance, and finding a female will allow us to correctly determine the placement of the genus in the subfamily Erigoninae.

Distribution: Known only from the type locality on Java, Indonesia.