Cybaeus melanoparvus Kobayashi, 2006

Sugawara, Yusuke, Ihara, Yoh & Nakano, Takafumi, 2021, A new species of Cybaeus L. Koch, 1868 (Araneae, Cybaeidae) with simple genitalia from central Japan is the sister species of C. melanoparvus Kobayashi, 2006 with elongated genitalia, Zoosystematics and Evolution 97 (1), pp. 223-233 : 223

publication ID

https://dx.doi.org/10.3897/zse.97.64473

publication LSID

lsid:zoobank.org:pub:93DA2C6A-37A0-4AF7-8C17-B90FC041BB0C

persistent identifier

https://treatment.plazi.org/id/B7E3A4E4-63CB-536E-99E6-1DE1FB5EC8AA

treatment provided by

Zoosystematics and Evolution by Pensoft

scientific name

Cybaeus melanoparvus Kobayashi, 2006
status

 

Cybaeus melanoparvus Kobayashi, 2006 Figures 8 View Figure 8 , 9 View Figure 9

Cybaeus melanoparvus Kobayashi, 2006: 41-42, figs 53-57; Ihara 2009a: 167, figs 2-2-30-228-230.

Material examined.

Japan • 1 ♂, 1 ♀; Gifu Prefecture, Ibi-gun, Ibigawa Town, Sakauchihirose ; 35°36.77'N, 136°25.16'E; 27 Oct. 2012; N. Koike leg.; KUZ Z3764 GoogleMaps 2 ♂♂, 2 ♀♀; Shiga Prefecture, Maibara City, Mt. Bungen ; 35°30.51'N, 136°23.42'E; 26 Oct. 2012; N. Koike leg.; KUZ Z3765 GoogleMaps .

Supplementary description of female spermathecae

(Figs 8F View Figure 8 , 9 View Figure 9 ). CD, SH, and SS continuous tubular, and similar in diameter from CP through to SB; this duct starting from CP running on ventral side anteriorly, then bending posteromedially and coiling once toward anterior tip; this duct then turning at anterior tip, coiling 2.5 times in the opposite direction, undulating twice on ventral side, and then a half coil to SB; PP located on dorsal side, 1 coil before turning point at anterior tip; SB globular, extending anterolaterally, and expanded at connection with SS; BG well-developed, located dorsally at connection between SS and SB; each FD not running from basal part of SB, but extending from small atrium located beneath SB.

Remarks.

The present specimens were unquestionably identified as C. melanoparvus by features of the male palp and female genitalia; that is, the remarkably developed conductor and complicated tubular spermathecae.

The present study could successfully document the positions of PP and BG in the spermathecae of this species for the first time. Because PPs were located at the dorsal surface of the duct near its anterior tip, this tubular structure, which was referred to as an 'anterior duct’ by Kobayashi (2006), must comprise CD, and also SH and SS.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Cybaeidae

Genus

Cybaeus

Loc

Cybaeus melanoparvus Kobayashi, 2006

Sugawara, Yusuke, Ihara, Yoh & Nakano, Takafumi 2021
2021
Loc

Cybaeus melanoparvus

Kobayashi 2006
2006