Pseudomasoreus ranomafanae Kavanaugh and Rainio, 2016

Kavanaugh, David H. & Rainio, Johanna, 2016, Twenty-six New Species of Predaceous Ground Beetles (Coleoptera: Adephaga: Carabidae) from Ranomafana National Park, Madagascar, Proceedings of the California Academy of Sciences 63 (7), pp. 201-268 : 249-252

Pseudomasoreus ranomafanae Kavanaugh and Rainio , sp. nov.

Figures 29 , 30A, 30C

Deuveilla n. sp. 1; Rainio 2009: 31(informal designation).

Lebiinae (n. sp. 1); Rainio 2012: 72 (informal designation).

TYPE MATERIAL.— Holotype ( Figs.29A–B ), a male, in CAS, labeled: “CASENT 1004471”/ “ MADAGASCAR, Fianarantsoa Province, Ranomafana National Park, Talatakely area , 900 m, mixed tropical forest, 2-22 January 2001,”/ “ 21.25041°S / 47.41945°E, Stop# DHK-01-001, D.H. & K.M Kavanugh, R.L. Brett, E. Elsom, F. Vargas, R. Ranaivosolo,”/ “ E.F. Randrianirina, N. Rasoamananana, T.J. Ravelomanana, and H.C. Raveloson collectors”/ “collected in daytime from large accumulation of dead leaf, twig, and branch debris on and extended up to 2 m above forest floor”/ “ HOLOTYPE Pseudomasoreus ranomafanae Kavanaugh & Rainio sp. n. 2015” [red label] . Paratypes (total of 8): 1 male (in CAS) labeled same as holotype except “CASENT 1004472” ; 2 males (in CAS) labeled “CASENT 1004003” and “CASENT 1004004”, respectively /

DERIVATION OF SPECIES NAME.— The species epithet, ranomafanae , is a noun in apposition, derived from the name of the national park in which the type was collected.

RECOGNITION.— Size large for genus, SBL of males = 9.7–10. 6 mm, of females = 10.3 mm. In Mateu’s (1980) key to the Malagasy species of this genus, members of P. ranomafanae ( Fig. 29A ) key to Pseudomasoreus decorsei Jeannel (1941b) based on the following combination of features: size large, SBL = 8.5 mm or more; elytra concolorous brown or piceous, without pale areas. However, they differ from the unique holotype of P. decorsei in having even larger body size (SBL = 8.5 mm in P. decorsei type), pronotum narrower overall and especially basally and with less rounded, more evident hind angles (pronotum broad, rounded, with hind angles effaced by smoothly rounded transition from lateral to basal margin in P. decorsei type), and elytral lateral margins nearly parallel (more evenly rounded in P. decorsei type). Members of P. ranomafanae are actually more similar to those of P. deuvei , which was not included in Mateu’s key. They share large size, general body form with long, parallel-sided elytra, and antennomere 3 glabrous except for the apical whorl of fixed setae (additional pubescence seen in apical part of antennomere 3 in most other species of genus). However, their body size is slightly smaller on average (SBL = 10.2–11. 5 in P. deuvei members), the pronotum is narrower overall and more narrowed basally, with the hind angles more distinct than in P. deuvei members and the lateral margins either straight or with slight sinuation anterior to the hind angles (lateral margins not at all sinuate in the latter). Also, the penultimate labial palpomeres in all specimens of the type series have three or four setae ( Fig. 29C ), whereas members of P. deuvei have only two such setae, a feature particularly noted by Casale in his original description. Finally, the median lobe of male genitalia ( Figs. 30A,C ) has the shaft slightly less arcuate and the apex slightly longer on more rounded apically than in P. deuvei males

(see Casale 1998, Figs.4–5 ). For future comparative purposes, we also provide digital photographs of the median lobe of the genitalia of a male Pseudomasoreus catalai Jeannel (1949) ( Figs. 30B,D ) [male previously unknown] to complement the illustrations of other Pseudomasoreus species provided by Jeannel (1949), Mateu (1980) and Casale (1998).

GEOGRAPHICAL DISTRIBUTION.— At present, known only from the type locality.

HABITAT DISTRIBUTION.— Specimens of this species were are collected in secondary montane rainforest in the Talatakely and Vohiparara areas at elevations ranging from 900–1170 m. Adults were collected by hand, by beating live vegetation and suspended dead leaves and twigs, particularly dead leaves suspended is leaf whirls of Pandanus sp. Two specimens were found in daytime in masses of dead leaves, twigs and branch debris accumulated on the forest floor.

Figures

FIGURE 29. Digital images of holotype male of Pseudomasoreus ranomafanae Kavanaugh & Rainio sp. nov. A. Habitus, dorsal aspect; B. Labels. Scale line A = 1.0 mm.

FIGURE 30. Digital images of Pseudomasoreus spp. A–C. Holotype male of P. ranomafanae Kavanaugh & Rainio sp. nov.; D, E. P. catalai Jean- nel (from Ranomafana National Park). A. Right labi- al palpus, ventral aspect; B–E. Aedeagus of male genitalia; B, D. Left lateral aspect; C, E. Ventral aspect. Scale lines = 0.5 mm.

FIGURE 4. Digital images of holotype female of Caelostomus latus Kavanaugh & Rainio sp. nov. A. Habitus, dorsal aspect; B. Labels; C. Head, left lateral aspect (arrow points to tranverse depression between eyes); D. Right anterior tarsus, dorsal aspect. Scale lines A = 1.0 mm, C–D = 0.5 mm.

FIGURE 5. Digital images of holotype female of Caelostomus rotundiformis Kavanaugh & Rainio sp. nov. A. Habitus, dorsal aspect; B. Labels; C. Right anterior tarsus, dorsal aspect. Scale line A = 1.0 mm, C = 0.5 mm.