Agyneta platnicki, Dupérré, Nadine, 2013

Dupérré, Nadine, 2013, Taxonomic revision of the spider genera Agyneta and Tennesseellum (Araneae, Linyphiidae) of North America north of Mexico with a study of the embolic division within Micronetinae sensu Saaristo & Tanasevitch 1996, Zootaxa 3674 (1), pp. 1-189 : 127-128

publication ID

https://dx.doi.org/10.11646/zootaxa.3674.1.1

publication LSID

lsid:zoobank.org:pub:981F80ED-96D7-40C7-8A3C-677954416A2E

DOI

https://doi.org/10.5281/zenodo.6162412

persistent identifier

https://treatment.plazi.org/id/038D6700-FFC2-5668-118C-0042ADC6B561

treatment provided by

Plazi

scientific name

Agyneta platnicki
status

new species

Agyneta platnicki new species

Figs 412–420 View FIGURES 412 – 420 , map 27

Type material: Female holotype from New Mexico, Lincoln County, T 6 N R 10 E Sec., 0 4 Sept., 1971, Riechert ( AMNH). EXAMINED.

Etymology: The specific name is a patronym in honor of Dr. Norman Platnick, curator emeritus at the American Museum of Natural History, New York, USA.

Diagnosis: Males and females are distinguished by their distinctive abdominal pattern ( Figs 416, 417 View FIGURES 412 – 420 ). Males are differentiated from all Agyneta by their large, tricorn ventral cymbial tubercle ( Fig. 412 View FIGURES 412 – 420 ). Females are distinguished from all species by the discernible converging copulatory ducts not reaching the proximal part of scape visible on the epigynum ( Fig. 418 View FIGURES 412 – 420 ), for distinction with A. hedini see the diagnosis of the latter.

Description: Male: Total length 1.72; carapace length 0.81, width 0.73.

CEPHALOTHORAX: Carapace yellow, shiny, finely reticulate; margin suffused with gray. Sternum light yellow, lightly suffused with gray. Clypeus height 3. Chelicerae yellow, excavated; seta-tipped tubercles absent; promargin four teeth, retromargin two denticles and projection near base of fang. Cheliceral stridulatory organ visible ~ 27 striae, evenly spaced throughout. ABDOMEN: Off-white with black spots ( Fig. 416 View FIGURES 412 – 420 ). LEGS: Missing. GENITALIA: Palpal tibia with elongated, smooth retrolateral tibial apophysis; dorsal tibial apophysis absent; two retrolateral trichobothria and a dorsal one ( Fig. 413 View FIGURES 412 – 420 ). Cymbium with conical extension; dorsal cymbial tubercle small; ventral tubercle large and rugose; prolateral notch deep ( Fig. 412 View FIGURES 412 – 420 ). Embolus tip bent; rugose ventrally; Fickert’s gland bulbous; ventral lamella absent; thumb extending beyond the embolus proper ( Fig. 414 View FIGURES 412 – 420 ). Embolus proper set apically, small prong near base ( Fig. 414 View FIGURES 412 – 420 ). Anterior terminal apophysis long with a few short protrusions; posterior terminal apophysis, large, well sclerotized with bifid tip with protrusions; lamella characteristica with large, triangular folded tip ( Fig. 415 View FIGURES 412 – 420 ).

Female: Total length 1.82; carapace length 0.72, width 0.58.

CEPHALOTHORAX: Carapace yellow, shiny, finely reticulate margin suffused with gray. Sternum light yellow, lightly suffused with gray. Clypeus height 3. Chelicerae yellow; promargin four teeth, retromargin three denticles. Cheliceral stridulatory organ visible ~ 30 striae, evenly spaced throughout. ABDOMEN: Off-white with black spots ( Fig. 417 View FIGURES 412 – 420 ). LEGS: Yellow; leg I total length: 4.13, leg III total length: 2.72; Tm I: 0.19, Tm IV: absent. GENITALIA: Epigynum with narrow proximal part of scape, sides parallel gradually enlarging apically; epigynal slits small and rounded; pit hook depression absent ( Fig. 418 View FIGURES 412 – 420 ); lateral lobes short and wide; stretcher indistinguishable ( Fig. 419 View FIGURES 412 – 420 ). Median part of scape narrow basally, larger apically; genital pores situated in the middle of median part of scape ( Fig. 420 View FIGURES 412 – 420 ). Internal genitalia with elongated, ventral receptacula and an oval dorsal one ( Figs 419, 420 View FIGURES 412 – 420 ).

Other material examined: USA: New Mexico: Lincoln, T 6 N R 10 E, 15.viii. 1971, 13, 24.viii. 1971, 1Ƥ, 04.ix. 1971, 1Ƥ, Riechert ( AMNH).

Distribution: Southwest USA, New Mexico.

Note: The male was not chosen as the holotype and no illustrations of the male palp in retrolateral view was possible since the only known male had both palps completely expanded.

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Linyphiidae

Genus

Agyneta