Malenka diablo Verdone & Kondratieff, 2018

Verdone, Chris J. & Kondratieff, Boris C., 2018, Malenka Diablo, A New Species Of Stonefly From The Diablo Range Of California, U. S. A. (Plecoptera: Nemouridae), Illiesia 14 (6), pp. 126-134: 128-133

publication ID

http://doi.org/10.5281/zenodo.4758021

publication LSID

lsid:zoobank.org:pub:4EDA0DE5-84C2-4F97-8913-3C60FC87ACCC

DOI

http://doi.org/10.5281/zenodo.4764925

persistent identifier

http://treatment.plazi.org/id/038B87E9-F21E-ED78-FCB8-FE4E6D02FA0E

treatment provided by

Felipe

scientific name

Malenka diablo Verdone & Kondratieff, 2018
status

 

Malenka diablo Verdone & Kondratieff, 2018  

( Figs. 2-13 View Fig View Figs View Figs View Fig )

http://lsid.speciesfile.org/urn:lsid: Plecoptera   .speciesfile.org: TaxonName:503118

Material examined. Holotype ♂ U.S.A. – California: Santa Clara Co., Colorado Creek, Mines Rd. , N 37.43389, W 121.51095, 27 February 2018, B.C. Kondratieff, C.J. Verdone, J.B. Sandberg ( NMNH) GoogleMaps   . Paratypes: same data as holotype GoogleMaps   , 19♂ 8♀, 8L ( CSUIC); same data as holotype GoogleMaps   , 3♂, 3♀, 3L ( BYU). Stanislaus Co., Del Puerto Creek, Del Puerto Canyon Rd. , N 37.40886, W 121.41609, 27 February 2018, B.C. Kondratieff, C.J. Verdone, J.B. Sandberg GoogleMaps   , 3♂, 1♀ ( CSUIC)   .

Additional material examined. Malenka biloba   : California: Kern Co., Dougherty Creek, SR 178, N 35.47293, W 118.71338, 17 April 2018, W.K. Reeves, 2♂, 5♀ ( CSUIC). GoogleMaps   Los Angeles Co. , Arroyo Seco Creek , Switzer Campground , [N 34.26380, W 118.14400], 12 January 2012, B.C Kondratieff, D. Murányi, J.B. Sandberg, C. R GoogleMaps   . Nelson, 9♂, 8♀ ( CSUIC); Coldbrook Creek, Coldbrook Campground, Hwy 39, N 34.29390, W 117.83950, 13 January 2012, B.C. Kondratieff, D. Murányi, J.B. Sandberg, C. R GoogleMaps   . Nelson, 2♂, 4♀ ( CSUIC); Elizabeth Lake Canyon, Cottonwood Campground , [N 34.640264, W 118.504806], 18 January 1992, B.C. Kondratieff, 5♂, 2♀ 2L ( CSUIC); GoogleMaps   Pacoima Canyon Creek , San Gabriel Mountains , N 34.345958, W 118.36593, 19 January 1992, B.C Kondratieff 2♂ ( CSUIC); GoogleMaps   Soldier Creek , Falling Springs, 2.3 mi. N Coldbrook Campground, N 34.30100, W 117.83800, 13 January 2012, B.C. Kondratieff, D. Murányi, J.B. Sandberg, C. R GoogleMaps   . Nelson, 3♂, 1♀ ( CSUIC). Orange Co., Silverado Canyon , end of Silverado Canyon Rd. , [N 33.75194, W 117.55495], 21 November 2005, L. Myers, 1♂, 2♀ ( CSUIC). GoogleMaps   Riverside Co. , Strawberry Creek , Hwy 74, 3 mi. W Mountain Center , N 33.71085, W 116.76941, 10 January 2012, B.C. Kondratieff, D. Murányi, J.B. Sandberg, C. R GoogleMaps   . Nelson, 1♀ ( CSUIC). GoogleMaps   San Bernardino Co., Lytle Creek, Applewhite Picnic Area , [N 34.26000, W 117.49600], 9 January 1988, R. W. Baumann, B.J. Sargent, B.C. Kondratieff, C. R. Nelson, 4♂, 2♀ ( CSUIC); GoogleMaps   same location, 8 January 2012, B.C. Kondratieff, D. Murányi, J.B. Sandberg, C. R. Nelson, 33♂, 35♀ ( CSUIC). GoogleMaps   San Diego Co., Fry Creek, Fry Creek Campground, Rd. S-6, N 33.34400, W 116.88000, 11 January 2012, B.C. Kondratieff, D. Murányi, J.B. Sandberg, C. R. Nelson, 17♂, 5♀ ( CSUIC); GoogleMaps   Iron Spring Creek, Rd. S-6, N 33.33277, W 116.87142, 11 January 2012, B.C. Kondratieff, D. Murányi, J.B. Sandberg, C. R. Nelson, 1♂, 1♀ ( CSUIC). GoogleMaps   Santa Barbara Co., Cachuma Creek , Sunset Valley Rd. , [N 34.70248, W 119.91699], 21 January 1992, B.C. Kondratieff, 1♂ ( CSUIC). GoogleMaps   Ventura Co. , North Fork Matalija Creek , Wheeler Gorge Campground , Los Padres NF, [N 34.51076, W 119.27498], 20 January 1992, B.C. Kondratieff, 1♂, 1♀, 1L ( CSUIC); GoogleMaps   Reyes Creek , Reyes Creek Rd. , [N 34.67949, W 119.30816], 21 January 1992, B.C. Kondratieff, 4♂, 2♀, 2L ( CSUIC) GoogleMaps   .

Malenka murvoshi   : Nevada: Clark Co., Willow Creek, Willow Creek Campground , [N 36.41774, W 115.76391], 3 April 1981, R GoogleMaps   . W. Baumann, S.M. Clark, 10♂, 2♀ ( CSUIC: Paratypes)   .

Distribution. U.S.A. – CA ( Fig. 1 View Fig ).

Etymology. The new species is named after the region where it was collected, the Diablo Range, mountains that form the eastern flank of the Pacific Coast Ranges southeast of the San Francisco Bay area ( Encyclopedia Britannica 2017). The proposed common name is the “Diablo Forestfly”.

Male. Macropterous. Length of forewings 7.0– 7.7 mm (n = 10). Length of body 5.0– 5.7 mm (n = 10). General body color brown ( Fig. 2 View Fig ). Head mostly brown; area between lateral ocelli and eyes yellow-gold. Antennae uniformly brown ( Fig. 2 View Fig ). Occiput with rugose spots. Pronotum with scattered dark rugosities. Legs light brown ( Fig. 2 View Fig ). Wings fumose ( Fig. 2 View Fig ). Epiproct recurved over abdomen ( Figs. 3– 4 View Figs ). Apical half of dorsal sclerite divided longitudinally ( Figs. 3–5 View Figs ). Dorsal sclerite tightly appressed along division, except at the apex which opens into a deep V-shaped incision ( Figs. 3, 5 View Figs ). Apex of dorsal sclerite expanded into lobes bearing large scales laterally ( Fig. 4 View Figs ). Ventral sclerite tightly appressed to the dorsal sclerite ( Fig. 4 View Figs ). Apex of ventral sclerite bifurcate, directed dorsally and situated within the apical incision of the dorsal sclerite ( Figs. 3, 5 View Figs ). Paraprocts composed of three lobes; outer lobe short, blunt, darkly sclerotized, extending to the mesobasal sclerite encircling the cerci. Inner lobe triangular, apex bifurcate, forming a deep U-shaped notch. Median lobe large, bifurcate, curved distally and upward, flanking the epiproct base ( Figs. 6–8 View Figs ). Median lobe of subequal width throughout its length ( Figs. 6–7 View Figs ). Proximal margin with a distally directed, sharply pointed apex ( Figs. 6–7 View Figs ). Distal margin with a broadly triangular, distally directed, subapical tooth ( Figs. 6–8 View Figs ). Cercus very lightly sclerotized, one segmented with a sclerotized nipple-like process on apex and a mesobasal lobe ( Figs. 3 View Figs , 9–10 View Figs ). Mesobasal lobe simple, lightly sclerotized and reduced to a low knob ( Figs. 3 View Figs , 9–10 View Figs ). Vesicle narrow and elongate, widest towards apex, tapering evenly to the base ( Fig. 11 View Figs ). Vesicle surface covered with rounded pitlike indentations, basal and lateral margins with trichoid sensilla ( Fig. 11 View Figs ). Hypoproct well developed, base covering medial ⅓ of sternum nine, apical portion sharply tapered to a narrow, triangular apex and nested between the inner paraproct lobes ( Fig. 11 View Figs ).

Female. Macropterous. Length of forewings 8.6– 10.0 mm (n = 10). Length of body 7.0– 8.4 mm (n = 10). General body coloration similar to male. Seventh sternum produced at the posteromedial margin, lightly sclerotized, bearing a nipple-like projection ( Fig. 12 View Figs ). Eighth sternum with a narrow, medial V-shaped notch that extends to the base of segment ( Fig. 12 View Figs ). Margins of notch lightly sclerotized ( Fig. 12 View Figs ).

Larva. General morphology as for genus ( Fig. 13 View Fig ). Length of body 6.0– 7.3 mm (n = 10). Anterior cervical gill composed of 5–6 branches, posterior gill composed of 7–8 branches ( Fig. 13 View Fig inset).

Diagnosis. Malenka diablo   is most similar to M. biloba   and M. murvoshi   . Males of these species share the following characters: (1) dorsal sclerite divided longitudinally, apex with a deep V-shaped excavation forming apical lobes bearing large scales ( Figs. 3, 5 View Figs , 14, 16 View Figs ; figs. 1–3, 6, 8–10 in Baumann & Kondratieff 2010); (2) apex of ventral sclerite bifurcate, directed dorsally and situated within the apical excavation of the dorsal sclerite ( Figs. 5 View Figs , 16 View Figs ; figs. 3, 9 in Baumann & Kondratieff 2010); (3) mesobasal lobes of cerci simple ( Figs. 9–10 View Figs , 19–20 View Figs ; figs. 1, 6 in Baumann & Kondratieff 2010); and (4) vesicle surface covered with rounded pit-like indentations, basal and lateral margins with trichoid sensilla ( Figs. 11 View Figs , 21 View Figs ; fig. 12 in Baumann & Kondratieff 2010).

The new species is distinguished from M. biloba   and M. murvoshi   by details of the median paraproct lobes and cerci. In the new species, the median lobe of the paraproct is bifurcate apically, bearing well developed points on the proximal and distal margins, with the proximal prong positioned apically and the distal prong subapically ( Figs. 6–8 View Figs ). In M. biloba   , the median paraproct lobe is also bifurcate, but the proximal prong is finger-like, positioned medially and the distal prong is situated apically ( Fig. 17–18 View Figs ). In M. murvoshi   , the paraproct has a single point apically and a small spine on the basal proximal margin (figs. 1, 4, 7, 11 in Baumann & Kondratieff 2010). The new species is further differentiated by the shape of the mesobasal lobes on the cerci. In M. diablo   , the mesobasal lobe is reduced to a low knob ( Fig. 9-10 View Figs ).

In contrast, both M. biloba   and M. murvoshi   possess mesobasal lobes on the cerci that form swollen, nipple-like lobes ( Figs. 19–20 View Figs ; figs. 1, 6 in Baumann & Kondratieff 2010).

Females of M. diablo   ( Fig. 12 View Figs ) cannot be separated from M. biloba   ( Fig. 22 View Figs ) and M. murvoshi   (fig. 5, 13 in Baumann & Kondratieff 2010) without associated adult males. Larvae cannot be separated from the other similar species by the number of cervical gills as hypothesized by Baumann and Kondratieff (2010). However, at present, these species appear to be geographically separated.

Biological Notes. There is no information about the biology or life cycle of M. diablo   . Based on the above records, the emergence period appears to be in late February and early March. The type locality ( Fig. 23 View Figs ) and paratype locality ( Fig. 24 View Figs ) are 2 nd and 3 rd order, seasonally intermittent streams in the

Coastal Mountains level III ecoregion (USEPA 2018), at elevations of 806 m and 450 m, respectively. Other adult stoneflies collected with the type specimens were Taenionema californicum (Needham & Claassen, 1925)   and Capnia saratoga Nelson & Baumann, 1987   .

NMNH

Smithsonian Institution, National Museum of Natural History

BYU

Monte L. Bean Life Science Museum

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Nemouridae

Genus

Malenka