Sicariomorpha maschwitzi (Wunderlich) Ott & Beeren & Hashim & Witte & Harvey, 2015

Ott, Ricardo, Beeren, Christoph Von, Hashim, Rosli, Witte, Volker & Harvey, Mark S., 2015, Sicariomorpha, a New Myrmecophilous Goblin Spider Genus (Araneae, Oonopidae) Associated with Asian Army Ants, American Museum Novitates 2015 (3843), pp. 1-16 : 9-12

Sicariomorpha maschwitzi (Wunderlich) , comb. nov.

Figures 1−46

Gamasomorpha maschwitzi Wunderlich, 1995: 560 , figs. 1−5.

TYPES: MALAYSIA: Selangor: holotype male, from Gombak valley , near Kuala Lumpur; secondary rain forest, forest ground with Leptogenys distinguenda ants (Nov. 1982, H. Hänel), deposited in SMF (37191, PBI _OON 25587) (examined). Paratypes: 1 male, 2 females, collected with holotype, deposited in SMF (37192, PBI _OON 25588) (examined); 1 male, 1 female, collected with holotype, deposited in J. Wunderlich private collection (not examined) .

DIAGNOSIS: Sicariomorpha maschwitzi can be recognized by the generic characters and also by the shape of male palp and female genitalia (figs. 9–16).

MALE (PBI_OON 25587): Total length 2.71. Cephalothorax: Carapace very broad, anteriorly narrowed by less than 1/3 of its width (fig. 3); nonmarginal pars thoracica setae scattered over all pars thoracica. Clypeus twice the ALE diameter (fig. 5). Eyes in triads (fig. 5). Legs: Tarsi I–IV superior claws inner face smooth; tarsi I–IV with four teeth on lateral surface and five teeth on median surface (figs. 34-36). Genitalia: Palp: embolus distally enlarged, gull-beak shaped, with distal translucid area (fig. 9–14); bulb with prolateral sclerotized ridge (duct?).

FEMALE (PBI_OON 25588): Total length 2.81. As in male except as noted. Palp: Spines absent. Genitalia: With free internal genital sclerite placed anteriorly to the epigastric furrow (fig. 15). Genital sclerite crown shaped, with stout medial portion; receptacle rounded; lateral apodemes directed and narrowing anteriorly, slightly outward directed, with curved tip and posteriorly with angular corner (figs. 15–16).

OTHER MATERIAL EXAMINED: MALAYSIA: Selangor : 4 ♂, 3 ♀, Ulu Gombak , 03°19.4796′N, 101°45.1630′E, 2008, ex ant colony, lowland dipterocarp rainforest, C. von Beeren ( WAM T108254 , PBI _OON 46565) ; 2 ♂, 2 ♀, same data ( AMNH) ; 3 ♂, 5 ♀, same data except 2008 ( WAM T108259 , PBI _OON 46570) ; 1 ♂, 3 ♀, same data except 2009 ( WAM T108260 , PBI _ OON 46571) ; 1 ♂, 2 ♀, same data except 2010 ( WAM T108255 , PBI _OON 46566) ; 3 ♂, 3 ♀, same data ( WAM T108256 , PBI _OON 46567) ; 1 ♂, 1 ♀, same data ( CAS) ; 1 ♂, 1 ♀, same data ( MRAC) ; 1 ♂, 1 ♀, same data ( MCN) ; 16 ♀, same data except 2007 ( WAM T108257 , PBI _OON 46568) ; 2 ♂, 5 ♀, same data ( WAM T108258 , PBI _OON 46569) ; Pahang: 3 ♂, 7 ♀, Pahang, Bukit Rengit , 03°35.779′N, 102°10.814′E, 2010, ex ant colony, lowland dipterocarp rainforest, C. von Beeren ( WAM T108261 , PBI _OON 46572) .

DISTRIBUTION: Sicariomorpha maschwitzi is known only from lowland dipterocarp forest in the states of Selangor and Pahang where it is closely associated with the army ant Leptogenys distinguenda . MSH visited Ulu Gombak in 2010, but did not locate any specimens of this spider in forest leaf litter, although representatives of several other oonopid genera were present.

Figures

FIGURES 1–2. 1, Sicariomorpha maschwitzi, comb. nov., participates in ant emigrations by performing a “tandem-running”-like behavior. 2, Participation of S. maschwitzi in host migrations. Leptogenys distinguenda workers heading toward the new nest were counted periodically for 90 sec, followed by a 90 sec break. Additionally, the presence of spiders was counted throughout the entire emigration.

FIGURES 3−8. Sicariomorpha maschwitzi, comb. nov., male. 3, Dorsal; 4, ventral; 5, frontal; 6, lateral; 7, sternum, ventral; 8, abdomen, ventral.

FIGURES 9–16. Sicariomorpha maschwitzi, comb. nov., 9–14, male palp; 13–16, female genitalia, ventral view. 9, Retrolateral; 10, prolateral; 11, ventral; 12, frontal; 13, dorsal; 14, Palp distal (embolus and conductor), dorsal view; 15, cleared; 16, internal genital sclerite. Scale bars = 0.10 mm.

FIGURES 17–22. Sicariomorpha maschwitzi, comb. nov., female. 17, Dorsal; 18, ventral; 19, carapace, dorsal; 20, lateral; 21, abdomen, anterolateral; 22, carapace, anterior.

FIGURES 23−31. Sicariomorpha maschwitzi, comb. nov., 23–27, 29–31, male. 23, Dorsal; 24, ventral; 25, lateral; 26, anterior; 27, anterior portion of carapace, ventral; 28, female carapace, anterior; 29, eyes, anterior; 30, chelicera fang, ventral; 31, chelicera fang venom duct opening.

FIGURES 32–46. Sicariomorpha maschwitzi, comb. nov., 32, 33, 42–46, male; 34–41, female. 32–33, spinnerets. 34, leg I, lateral; 35, leg III, lateral; 36, leg IV, lateral. 37–46, tarsal organ, dorsal view. 37, 42, palp; 38, 43, leg I; 39, 44, leg II; 40, 45, leg III; 41, 46, leg IV.