Hapalopus butantan ( Pérez­Miles, 1998 ) Perez-Miles, 1998

Fukushima, Caroline Sayuri, Bertani, Rogério & Jr, Pedro Ismael Da Silva, 2005, Revision of Cyriocosmus Simon, 1903, with notes on the genus Hapalopus Ausserer, 1875 (Araneae: Theraphosidae), Zootaxa 846, pp. 1-31 : 19-22

Hapalopus butantan ( Pérez­Miles, 1998) new combination

Figs 51–55

Cyriocosmus butantan: Pérez­Miles 1998: 96 , figs 1–7. Holotype male, IBSP 4948, ref. 55.854–2, and three paratypes males refs. 55.854–2, 55.854–6, 55.854–7, from U.H.E. Balbina, Uatuman River, Presidente Figueiredo, Amazonas, Brazil, 13 January 1988, team of collectors of IBSP, examined; Cyriocosmus elegans: Bertani 2000: 30 –31, 36 (misidentification).

Additional material examined: 1 female, IBSP 9654 from Manaus, Amazonas, Rescue team from IBSP, February 1988, ref. 56112(3), 1 female, IBSP 10968, 1 female, IBSP 10969 from Balbina, Amazonas, U.H.E. Balbina, Faunal Rescue team from IBSP, ref.

55.854 and 55.854–5, respectively; 1 female, IBSP 9252 from same locality and collector, May 1988, ref. 56765 (1).

Diagnosis: Male can be distinguished by the presence of a palpal tibial apophysis with two megaspines and by the short paraembolic apophysis originating from a ring­shaped keel ( Figs 51–52 ). Female differs by the heart­shaped sclerotized portion of the spermatheca ( Fig. 54 ).

Female ( IBSP 9654): Total length, not including chelicerae or spinnerets, 29.67. Cephalothorax length 11.17, width 10.83. Anterior eye row procurved, posterior row slightly recurved. Eye sizes and interdistances: AME 0.33, ALE 0.38, PME 0.33, PLE 0.33; AME­ AME 0.22, AME­ALE 0.11, PME­PME 0.94, PME­PLE 0.05, ALE­PLE 0.11 AME­PME 0.15, ALE­ALE 1.22, PLE­PLE 1.22. Eye tubercle length 1.28, width 1.83; clypeus absent. Fovea procurved, slightly deep and wide. Labium length 1.17, width 1.67, with 8 cuspules, maxillae with approximately 50 cuspules on the inner corner. Sternum length 4.33, width 4.17. Sigilla: second pair more than one diameter from margin, third pair twice diameter of first pair, more than one diameter from margin, fourth pair twice diameter of third pair, more than one diameter from margin. Chelicerae with 14 well developed teeth on promargin and a lateral row of small teeth. Tarsi I–IV densely scopulate, tarsi I divided by a narrow band of setae, II–IV widely divided by setae. Metatarsi I–II densely scopulate along 1/3 of article, III scopulate along 1/5 and IV without scopulae. Length of legs and palpal segments in Table 6 . Spination: femurs I–IV and palp 0; patellae I–IV and palp 0; tibiae I v 0­0­1 (apical), II v 0­0­1 (apical), III v 0­0­2 (apicals), p 1­0­0; IV v 0­0­2 (apicals), p 0­1­0, r 0­0­1 and palp v 0­0­2 (apicals); metatarsi I v 0­2­2 (apicals); II v 0­2­4 (apicals), p 0­1­1; III v 0­2­3 (2 apicals), p 1­1­2, r 0­1­1; IV v 1­2 ­7 (5 apicals), p 1­1­1, r 1­2­1. Coxae I–IV without stridulatory hairs. Spermathecae with a single receptacle having a membranous base. Posterior lateral spinnerets with three articles, basal as long as digitiform apical, median half length of both; lateral median spinnerets with one article. Urticating type IV hair on dorsum of the abdomen. Cephalothorax dark brown with a wide bright yellow area on the border; labium, maxillae, sternum and coxae reddish brown; legs light brown. Abdomen with a characteristic pattern ( Fig. 55 ).

Distribution: Known only from type locality, U.H.E. Balbina, Presidente Figueiredo, State of Amazonas, Brazil.

Cyriocosmus nigriventris Mello­Leitão, 1939 , holotype female from Falcon, Venezuela, deposited in Basel Museum ( Switzerland), not examined, was transferred to Metriopelma by Pérez­Miles (1998), based on the presence of a single oval spermatheca. However, the original illustration given by Mello­Leitão shows a specimen with a very characteristic abdominal color pattern, a lateral series of six red spots on each side and two median anterior red spots. The ventral abdomen is dark with one lateral series with four red spots at each side. This pattern, as well as the presence of a single oval spermatheca, is similar to the one presented in species of Hapalopus , which can be found in Venezuela. The female of the type species of the genus Metriopelma , M. breyeri Becker, 1878 is undescribed and it is not possible to know whether it has one or two spermathecae. Thus, Cyriocosmus nigriventris Mello­Leitão, 1939 is transferred from Metriopelma to Hapalopus , and a new combination Hapalopus nigriventris ( Mello­Leitão, 1939) is proposed.

Figures

FIGURE 55. Hapalopus butantan female (IBSP 9654), Brazil, Amazonas, U. H. E. de Balbina, Presidente Figueiredo, color pattern. From left top, in clockwise direction: cephalothorax, dorsal abdomen, lateral abdomen and ventral abdomen.

FIGURES 51 – 54. Hapalopus butantan. (51 – 53) Male holotype (IBSP 4948), Brazil, Amazonas, Uatuman River, Presidente Figueiredo. Left Palpal bulb, retrolateral (51), prolateral (52). (53) Left leg I tibial apophysis. (54) Female (IBSP 9654), Brazil, Amazonas, U. H. E. Balbina, Manaus. Spermatheca, dorsal. Scale bar = 1 mm. E = embolus, MB = membranous basis, PA = paraembolic apophysis, PI = prolateral inferior keel, PS = prolateral superior keel, R = ring­shaped keel.

Tables

TABLE 6. Hapalopus butantan, female (IBSP 9654). Measurements of legs and palp.

	I	II	III	IV	Palp
Femur	6.5	5.92	5.67	7.0	5.83
Patella	4.58	3.92	3.42	3.67	3.5
Tibia	4.75	4.2	4.0	5.33	3.75
Metatarsus	3.92	3.92	5.17	7.83	­­­