Cambonilla Jocqué, 2019

Jocqué, Rudy, Jocque, Merlijn, Stock, Willem, Rin, Naroeun & Henrard, Arnaud, 2019, The new Southeast Asian genus Cambonilla gen. nov. (Zodariidae, Araneae): ‘ bis repetita placent’, European Journal of Taxonomy 501, pp. 1-24 : 7-12

Genus Cambonilla Jocqué gen. nov.

urn:lsid:zoobank.org:act:D27DFE63-2D86-4705-B1AA-C753C24018EC

Type species

Cambonilla securicula Jocqué gen. et sp. nov.

Diagnosis

Species of Cambonilla gen. nov. are recognized by the tubular protrusion around the pedicel and dispersed PVS, with rows of tiny denticles in males, absence of PVS in females; both sexes have a marbled pattern of the abdominal venter, strongly recurved PER and granulate carapace teguments.

Etymology

The genus name is derived from the country of the type locality Cambodia, in combination with the ending of its sister genus Heliconilla . The gender is feminine.

Description

MEDIUM SIZE SPIDERS (7.5– 7.3 mm). With granulate teguments of carapace ( Fig. 2A ), sternum and basal leg segments. Carapace longer than wide (L/W <1.29–1.65) with sparse cover of split pale setae ( Fig. 2B ); widest at level of coxae II, narrowed to about 0.63 times maximum width in males ( Figs 2A , 5A ) and 0.66–0.80 times maximum width in females ( Fig. 6A ) (cephalic width measured on posterior tangent of PME); domed ( Fig. 2C ), without cervical grooves, profile highest at fovea.

COLOUR ( Fig. 5 A–D). Carapace dark brown; chelicerae, legs, mouthparts and sternum medium to orange brown; abdomen dorsum dark with pattern of numerous white spots without apodemes, in males anteriorly overlaid by transparent reddish orange oval scutum; venter with sepia pattern on dark background; sclerotized in front of epigastric fold, in males extended into short tubular extension around pedicel.

EYES. In two strongly procurved rows: PLE at level of AME ( Fig. 2D ). All eyes pale and subequal. Clypeus straight, height 2.8 to 4.2 times diameter of ALE ( Figs 2D , 5C ).

CHILUM. Single, well developed and delimited, protruding in the middle. Chelicerae conical with many evenly dispersed setae; without teeth; fangs about three times longer than wide at base ( Fig. 2E ). Labium triangular. Endites roughly triangular, converging ( Fig. 5B ). Sternum shield-shaped, almost as wide as long, with rounded precoxal depressions ( Fig. 4 A–B); anterior margin straight, lateral margins with inter- and intracoxal triangular extensions; posterior tip slightly indented in males, rounded or truncate in females.

LEGS. Slender. Formula 4123 or 4132. Tibial process well developed in all legs. Spination reduced on legs I and II, well developed on III and IV. Most spines short and slender. Bothria with three ridges ( Fig. 1F ). Superior tarsal claws with up to 15 teeth on leg I and II ( Fig. 3A ), with up to 8 teeth on legs III and IV ( Fig. 3B ). One dorsal hinged hair on tibiae I and II ( Fig. 3C ). Mt II-IV with preening brush of chisel-shaped setae ( Fig. 3D ).

FEMALE PALPAL TARSUS. With claw turned inward over ± 30°, provided with four or five small, basal, prolateral teeth; with several spines; without distal patch of chemosensitive setae.

ABDOMEN. Oval; tracheal spiracle fairly small, provided with small rectangular scutellum. Both sexes with six spinnerets. ALS large, conical, biarticulate. PLS and PMS provided with 1 and 4 cylindrical gland spigots respectively. Colulus represented by haired field. Venter with dispersed thick setae in posterior half ( Figs 5B, D , 8B, D ) and with short PVS provided with rows of tiny denticles ( Fig. 3 E–F), in ill-defined row and/or group in males; both absent in females; hinged hairs sparse ( Fig. 6 B–C).

MALE PALP. Tibia with strong RTA ( Figs 4D , 5E ). Cymbium with a few small distal spines; without distal claw; with patch of chemosensitive setae ( Figs 4 C–D, 5E), short lateral fold opening ventrad, reaching middle of cymbium; tegulum with large central membranous area ( Figs 5F , 7A ); MA situated

near retrolateral distal part of tegulum; C relatively small; embolus with massive well delimited base, originating on posterior part of tegulum, long, bifid ( Fig. 4E ).

EPIGYNE. With central plate wider than long ( Figs 6D , 7C , 9D , 10C ). Spermathecae poorly delimited smoothly fused to copulatory ducts ( Fig. 6E ).

Species included

Cambonilla securicula gen et sp. nov. (♂♀)

Cambonilla symphonia gen et sp. nov. (♂♀)

Distribution

Cambonilla is known from lowland forest in the vicinity of the Mekong River in Cambodia and Laos.

Figures

Fig. 2. Cambonilla securicula Jocqué gen. et sp. nov., male paratype (RBINS IG 33.889/002), scanning electron micrographs. A. Carapace, dorsal view. B. Branched setae near fovea. C. Carapace, lateral view. D. Eye region, frontal view. E. Chelicerae, ventral view. F. Trichobothrium on male palp, dorsal view. Scale bars A, C = 0.5 mm; B = 20 µm; D = 0.2 mm; E = 0.1 mm; F = 5 µm.

Fig. 5. Cambonilla securicula Jocqué gen. et sp. nov., male holotype. A. Habitus, dorsal view. B. Habitus, ventral view. C. Carapace, frontal view. D. Abdomen, posterior part, ventral view. E. Male palp, retrolateral view. F. Male palp, ventral view. Scale bars: A–B = 2 mm; C = 1 mm; D–F = 0.5 mm.

Fig. 6. Cambonilla securicula Jocqué gen. et sp. nov., female paratype (RBINS IG 33.889/003). A. Habitus, dorsal view. B. Habitus ventral view. C. Abdomen, posterior part, ventral view. D. Epigyne, ventral view. E. Epigyne, digested, dorsal view. F. Palp, dorsal view, arrow indicates modified prolateral spine on tibia. Scale bars: A–B = 5 mm; C = 1 mm; D–F = 0.2 mm.

Fig. 4. Scanning electron micrographs. A–F. Cambonilla securicula Jocqué gen. et sp. nov., male paratype (RBINS IG 33.889/005). G–I. Cambonilla symphonia Jocqué & Henrard gen. et sp. nov., male paratype (RBINS IG 33.889/009). Scanning electron micrographs. A. Sternal depression. B. As preceding, detail. C. Male palp, lateral view. D. Chemosensitive setae on cymbium, lateral view. E. Male palp, ventral view. F. Embolus with bifurcation, prolateral view. G. Stridulating file on base of F I, prolateral view. H. As preceding, detail. Scale bars: A, G = 0.1 mm; B = 50 µm; C, E = 0.5 mm; D, H = 20 µm; E = 0.5 mm; F = 0.2 mm; G = 0.1 mm; H = 20 µm.

Fig. 1. Preferred tree out of 5 (46 taxa, 100 characters), length 415, CI 45, RI 72. Arrow indicates the position of Cambonilla Jocqué gen. nov. Black circles indicate non-homoplasic synapomorphies and white circles indicate homoplasic changes. Character numbers (see Dankittipakul et al. 2012) are placed above the circles and the states are shown under the circles.

Fig. 3. Scanning electron micrographs. A. Cambonilla symphonia Jocqué & Henrard gen. et sp. nov., male paratype (RBINS IG 33.889/009). B–F. Cambonilla securicula Jocqué gen. et sp. nov. male paratype (RBINS IG 33.889/005) A. Tarsal claws of leg I, prolateral view.B.Tarsal claws of leg III, retrolateralview. C. Hinged hair on T I. D. Chisel shaped setae on Mt III. E. PVS, ventral view. F. As preceding, detail. Scale bars: A–B, D = 20 µm; C = 5 µm; E = 100 µm; F = 10 µm.

Fig. 8. Cambonilla symphonia Jocqué & Henrard gen. et sp. nov., male holotype A. Habitus, dorsal view. B. Habitus, ventral view. C. Habitus, lateral view. D. Abdomen, ventral view. E. Male palp, ventral view. F. Male palp, retrolateral view. Arrows indicate tubular extension. Scale bars: A–C = 2 mm; D = 1 mm; E–F = 0.5 mm.

Fig. 7. Cambonilla securicula Jocqué gen. et sp. nov. A–B. Male holotype. C. Female paratype (RBINS IG 33.889/003). A. Male palp, ventral view. B. As preceding, retrolateral view. C. Epigyne, ventral view. Abbreviations: C = conductor; E = embolus; EB = embolus base; MA = median apophysis; TM = tegular membranous area. Scale bars: A–B = 0.5 mm; C = 0.2 mm.

Fig. 9. Cambonilla symphonia Jocqué & Henrard gen. et sp. nov., female paratype (RBINS IG 33.889/008) A. Habitus, dorsal view. B. Habitus, ventral view. C. Abdomen, posterior part, ventral view. D. Epigyne, ventral view. Scale bars A–B = 5 mm; C = 0.5 mm; D–F = 0.2 mm.

Fig. 10. CambonillasymphoniaJocqué & Henrardgen. etsp.nov.A–B. Male holotype.C. Femaleparatype (RBINS IG 33.889/008). A. Male palp, retrolateral view. B. As preceding, ventral view. C. Epigyne, ventral view. Abbreviations: C = conductor; E = embolus; EB = embolus base; MA = median apophysis; TM = tegular membranous area. Scale bars: A–B = 0.5 mm; C = 1 mm; D–F = 0.2 mm.