Hoggicosa forresti, (MCKAY, 1973), Langlands & Framenau, 2010
Langlands, Peter R. & Framenau, Volker W., 2010, Systematic revision of Hoggicosa Roewer, 1960, the Australian ‘ bicolor’ group of wolf spiders (Araneae: Lycosidae), Zoological Journal of the Linnean Society 158 (1), pp. 83-123: 97-99
treatment provided by
HOGGICOSA FORRESTI ( MCKAY, 1973) COMB. NOV.
Lycosa forresti McKay, 1973: 385–389 , figs 1F–G, 2D–G; Main, 1976: 138–141, 149, 231, fig. 37B, plate B7; Brignoli, 1983: 450; McKay, 1985: 77.
Types: Holotype. ♀ from Western Australia: 8 miles west of Moorine Rock , 8.i.1970, W. H. Butler ( WAM 70 View Materials /44).
Paratypes. Western Australia: 1 ♀, Buntine Reserve, c. 3 miles east of Buntine Railway Station , 29°59′S, 116°42′E ( WAM 72 View Materials /635) GoogleMaps ; 2 ♀, 1 juvenile (juv.), Buntine Reserve, c. 3 miles east of Buntine Railway Station , 29°59′S, 116°42′E ( WAM 72 View Materials /639-41) GoogleMaps ; 1 ♂, Hyden , 32°27′S, 118°52′E ( WAM 69 View Materials /801) GoogleMaps ; 1 juv., Lake Moore , near south end, 30°20′S, 117°58′E ( WAM 71 View Materials /198) GoogleMaps ; 1 ♀, Nevoria mine, 10 miles east-south-east Marvel Loch , 31°30′S, 119°34′E ( WAM 70 View Materials /30) GoogleMaps ; 1 ♀, Mt Magnet , 323 mile peg, 28°03′S, 117°50′E ( WAM 69 View Materials /467) GoogleMaps ; 1 ♀, Rudall River , 22°28′S, 122°29′E ( WAM 71 View Materials /1151) GoogleMaps ; 1 ♀, Southern Cross , 31°14′S, 119°19′E ( WAM 72 View Materials /634) GoogleMaps ; 1 ♀, Southern Cross , 6 miles east, 31°16′S, 119°25′E ( WAM 69 View Materials /40) GoogleMaps ; 1 juv., Tammin , 31°38′S, 117°29′E ( WAM 69 View Materials /38) GoogleMaps ; 1 juv., Wongan Hills , 106.6 miles north-east, ( WAM 69 View Materials /792) ; 1 ♀, Wongan Hills, Ballidu Road , 135 mile peg, 30°54′S, 116°43′E ( WAM 69 View Materials /827) GoogleMaps ; 1 juv., Wongan Hills - Ballidu Road , 135 mile peg, 30°54′S, 116°43′E ( WAM 69 View Materials /828) GoogleMaps ; 1 juv., Wubin , 30°07′S, 116°38′E ( WAM 69 View Materials /41) GoogleMaps ; 1 juv., Wubin , 20 miles north-east, 29°54′S, 116°52′E ( WAM 69 View Materials /43) GoogleMaps ; 1 ♀, Wubin , 10 miles north-east, 30°00′S, 116°31′E ( WAM 69 View Materials /456) GoogleMaps ; 1 ♀, Yandil Station , 26°22′S, 119°49′E ( WAM 38 View Materials /916) GoogleMaps ; 1 ♀, 6 juv., Yellowdine , 38 miles south, 31°51′S, 119°39′E ( WAM 71 View Materials /69-75) GoogleMaps .
Misidentification , these are H. alfi : 1 ♀, Mt Magnet, 323 mile peg, 28°03′S, 117°50′E ( WAM 69 View Materials /791); 1 ♀, Paynes Find area, 323 mile peg, 29°15′S, 117°41′E ( WAM 70 View Materials /186) GoogleMaps .
Misidentification, these are H. castanea : 1 ♀, Morawa , 29°13′S, 116°00′E ( WAM 70 View Materials /172) GoogleMaps ; 1 ♀, Mt Magnet , 323 mile peg, 28°03′S, 117°50′E ( WAM 69 View Materials /46) GoogleMaps ; 1 ♀, Kulin , 32°40′S, 118°9′E ( WAM T 53819 View Materials ; 33/1607) GoogleMaps ; 1 ♀, Coonana , 12 miles north-west, 30°54′S, 123°01′E ( WAM 69 View Materials /35) GoogleMaps ; 1 ♀, Laverton , Police Station, 28°38′S, 122°24′E ( WAM 26 View Materials /716, published as WAM 26 View Materials / 717 in McKay, 1973) GoogleMaps ; 1 ♀, Marloo Station , 28°19′S, 116°11′E ( WAM 69 View Materials /42) GoogleMaps .
Other material examined: 64 males, 48 females, and 19 juveniles from 105 records (Appendix S1).
Diagnosis: Most similar to H. forresti are H. brennani and H. castanea . Males and females of H. forresti may be distinguished from both by the presence of a prominent black lanceolate stripe on the anterior of the dorsal abdomen ( Fig. 1C View Figure 1 ). In addition, H. brennani has a pale venter with dark patterning compared with the black venter of H. forresti and H. castanea . McKay (1973) indicated the leg colouration of forresti , with a pale diamond on the femur, as a diagnostic feature, but females of H. castanea can also display this leg coloration, but lack a dark lanceolate stripe. Males of H. forresti may be distinguished from H. castanea by the pars pendula, which is thin and transparent and joins below the embolus tip ( Fig. 7C View Figure 7 ), whereas in H. castanea it is thick and opaque and joins at the tip of the embolus ( Fig. 7A View Figure 7 ). The tegular apophysis may be used to distinguish H. brennani males, which have a flange on the ventral process ( Fig. 5C, D View Figure 5 ) that is lacking in H. forresti ( Fig. 5E View Figure 5 ).
Description: Male: Based on WAM T47762 View Materials , North Baandee Nature Reserve, 31°38′S, 117°43′E, WA. Dorsal shield of prosoma brown, faint radial pattern, covered with black and white setae. Sternum light brown, labium brown, with scattered black setae. Chelicerae dark brown with white setae. Legs brown with black setae, pale diamond shape at base of femurs. Also pale with white setae on retrolateral side of ventral surface of legs I and II. Opisthosoma dorsally mottled grey. Black median lanceolate stripe at anterior end with black setae ( Fig. 1C View Figure 1 ). Cover of black and white setae. Opisthosoma laterally cream with white setae. Venter with black triangular patch extending to spinnerets. Terminal apophysis of pedipalp strongly curved apically ( Fig. 17A, B View Figure 17 ). Pars pendula transparent and connected to embolus just below embolus tip ( Fig. 7C View Figure 7 ). Subterminal apophysis present, but small and difficult to see beneath terminal apophysis ( Fig. 7C View Figure 7 ). Tegular apophysis with rounded ventral process projecting perpendicular. Prominent curved ridge between ventral process and apical point ( Fig. 5E View Figure 5 ).
Female: Based on WAM T47762 View Materials , data as above. Dorsal shield of prosoma pale orange with white setae covering. Sternum, labium, and chelicerae as male. Legs dark brown with black setae, same pale diamond shape on femur as male. Ventral side of legs on femur and patella brown, remainder pale. Opisthosoma dorsally as male with faint transverse rows from end of black stripe to spinnerets. Opisthosoma laterally cream with some black patches. Venter as male. Epigyne with broad anterior pockets ( Fig. 17C View Figure 17 ). Internal epigyne with large ovoid anterior pockets and ‘s’ shaped sclerotized median septum channels ( Fig. 17D View Figure 17 ).
Variation: The carapace of males can be darker with a more obvious radial pattern; some display a less obvious leg pattern or lack it altogether with grey/ brown legs. The dorsal opisthosoma can vary but always has a dark lanceolate stripe. The dark lanceolate stripe is sometimes surrounded by cream or with black extensions in the middle (bulges). The length between the process and the tip of the tegular apophysis can vary, but the pars pendula and subterminal apophysis are always the same.
Remarks: McKay (1973) noted atypical specimens from Forrest, Rawlinna, and Fitzgerald River in his description. Our examination of these specimens identified them as H. castanea .
Measurements: ♂ (♀) both T47762 View Materials : TL, 18.1 (20.3); PL, 9.6 (11.0); PW, 8.0 (8.6). Eyes: AME, 0.54 (0.54); ALE, 0.32 (0.36); PME, 0.95 (1.32); PLE, 0.91 (1.14). Sternum (length/width): 4.1/3.6 (4.8/4.0). Labium (length/width): 1.45/1.36 (1.59/1.59). OL, 8.6 (9.3); OW, 4.3 (6.0). Legs, lengths of segments (femur + patella/tibia + metatarsus + tarsus = total length): pedipalp, 4.6 + 4.3 + – + 3.6 = 12.5; I, 9.7 + 11.4 + 9.3 + 5.0 = 35.4; II, 9.3 + 10.8 + 9.3 + 4.8 = 34.2; III, 8.6 + 10.0 + 9.6 + 4.8 = 33.0; IV, 10.7 + 12.1 + 12.1 + 5.6 = 40.5 (pedipalp, 5.0 + 5.0 + – + 3.6 = 13.6; I, 9.3 + 11.4 + 7.1 + 4.3 = 32.1; II, 8.8 + 10.7 + 7.1 + 4.3 = 30.9; III, 7.8 + 9.7 + 8.3 + 4.3 = 30.1; IV, 10.0 + 12.1 + 11.4 + 5.0 = 38.5).
♂ (♀) (range, mean ± SD): TL, 13.6–20.0, 16.8 ± 1.7; PL, 7.9–10.3, 9.0 ± 0.7; PW, 6.3–8.3, 7.3 ± 0.6; N = 31 (TL, 17.1–22.4, 20.4 ± 1.3; PL, 9.3– 11.4, 10.5 ± 0.6; PW, 7.1–9.4, 8.6 ± 0.6; N = 18).
Natural history: Hoggicosa forresti has been collected from gritty, stony, and fine clayey loams as well as sandplains. Found in woodlands of Gimlet ( Eucalyptus salubris ), Salmon Gum ( E. salmonophloia ), and E. dundasii as well as Mallee ( Eucalyptus ) and Spinifex ( Triodia ). Adult females were collected all year round and adult males from November to May. This species excavates burrows armed with a trapdoor (see Main, 1976, fig. 37B).
Distribution: Southern Western Australia and South Australia ( Fig. 18 View Figure 18 ). The record of a specimen from Cottesloe, Perth (WAM 22/5) is considered dubious and may be mislabelled.
Types: Holotype. ♀ from South Australia: Lake Gilles , 32°41′20′S, 136°55′20′E, 9.xii.1994, P. Hudson ( SAM NN14785 View Materials ).
Paratypes. South Australia: 1 ♀ from Lake Gilles , 32°41′20′S, 136°55′20′E, 15.v.1993, P. Hudson ( SAM NN14786 View Materials ) ; 1 ♀ from Lake Gilles , 32°43′S, 136°47′E, i.1996, P. Hudson ( SAM NN13801 View Materials ) GoogleMaps .
Other material examined: Seven females and one juvenile from six records (Appendix S1).
Etymology: The specific epithet is a matronym in honour of the senior author’s mother, Natasha Langlands, in appreciation for all her love and support.
Diagnosis: This species can be distinguished from all other Hoggicosa by its striking dorsal abdominal pattern, which consists of black transverse markings on a pale cream abdomen ( Fig. 1F View Figure 1 ). In addition, the anterior pockets of the epigynum are much larger than in any other species ( Fig. 19A View Figure 19 ).
Description: Male: Currently unknown.
Female: Based on holotype. Dorsal shield of prosoma orange-brown, darker in eye quadrangle, faint radial pattern and cover of white setae. Sternum and labium brown with scattered black setae. Chelicerae dark brown with white setae. Legs grey. Opisthosoma dorsally cream with black transverse lines ( Fig. 1F View Figure 1 ). Opisthosoma laterally and ventrally cream. Epigynum with broad and very elongate anterior pockets ( Fig. 19A View Figure 19 ). Internal epigyne with spermatheca slightly wider than anterior pockets ( Fig. 19B View Figure 19 ).
Remarks: A juvenile female displays the same dorsal abdominal pattern.
Measurements: ♀ holotype: TL, 19.0; PL, 9.0; PW, 6.8. Eyes: AME, 0.50; ALE, 0.36; PME, 1.04; PLE, 1.00. Sternum (length/width): 3.8/3.1. Labium (length/ width): 1.4/1.1. OL, 10.0; OW, 7.1. Legs, lengths of segments (femur + patella/tibia + metatarsus + tarsus = total length): pedipalp, 4.3 + 4.0 + – + 2.7 = 11.0; I, 7.3 + 8.6 + 5.7 + 2.8 = 24.4; II, 7.0 + 8.3 + 5.4 + 2.8 = 23.5; III, 6.3 + 7.4 + 6.0 + 2.8 = 22.5; IV, 7.7 + 9.1 + 8.1 + 3.3 = 28.2.
♀ (range, mean ± SD): TL, 16.7–23.6, 20.4 ± 3.3; PL, 8.9–11.4, 10.1 ± 1.2; PW, 6.4–8.6, 7.4 ± 0.9; N = 5.
Natural history: Several specimens have been collected in low depressions covered with vegetation of Chenopods and Samphire. Mature females collected from December to May. The holotype was dug from a burrow with a thick bathtub plug-like door ( Fig. 20 View Figure 20 ).
Distribution: New South Wales, Queensland, and South Australia ( Fig. 22 View Figure 22 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.