Pseudoprocirrus Bernhauer

Herman, Lee, 2010, Generic Revision Of The Procirrina (Coleoptera: Staphylinidae: Paederinae: Pinophilini), Bulletin of the American Museum of Natural History 2010 (347), pp. 1-78 : 64-66

Pseudoprocirrus Bernhauer Figures 8, 103–105

Pseudoprocirrus Bernhauer, 1934: 506 . Type species: Pseudoprocirrus arrowi Bernhauer, 1934: 506 , fixed by original designation and monotypy.

— Blackwelder, 1952: 329 (type species). — Fagel, 1971: 11, 47 (characters; key to species; type species).

DIAGNOSIS: Only Pseudoprocirrus and Oedodactylus among the Procirrina have just three inflated protarsomeres (fig. 8 and as in fig. 89) and are therewith separated from the other six genera that have four (see fig. 92). In both genera abdominal segment III has a paratergite on each side, the third protarsomere is highly asymmetrical, and the posterior edge of the elytra has a row of setae. The two genera can be separated as follows. The African genus Pseudoprocirrus has a transverse, interantennal, frontoclypeal ridge, the gular sutures are most approximate near the middle, tergum and sternum VIII lack a transverse basal ridge, and tergum IX and tergum X are separated and distinct (fig. 103). The New World genus Oedodactylus lacks the frontoclypeal ridge, the gular sutures are most approximate basally, tergum and sternum VIII have a transverse basal ridge, and tergum IX is fused to tergum X (fig. 87). The presence of setae on the edge of the posterior margin of the elytra will separate Pseudoprocirrus from Procirrus , Oedichirus , Palaminus , and Paraprocirrus .

DESCRIPTION: Head (fig. 8) not pedunculate, wider than long; frontoclypeus with subapical, interantennal, transverse ridge; postocular lateral margin broadly rounded to neck; postocular lateral margin moderately long; basal angle absent; basal margin of head indistinguishable from lateral margin, without marginal ridge, and with median portion broadly and shallowly rounded anterior to neck. Neck across nuchal constriction about half as wide as greatest postocular width of head; [**nuchal groove] 3; [**nuchal ridge]. Eye length shorter than postocular length of head. Dorsal surface with dense umbilicate punctation. Ventral surface without postocular groove. Gular sutures separated and present basally; sutures most approximate at about middle. Gula without pubescence. Antennomere 11 about as long as 10; apex without spinelike pencil of setae. [**Mandibles]; [**prostheca]. Maxil-

3 This structure and other similarly cited structures were unavailable for study.

lary palpus with palpomere 4 longer than second or third, elongate securiform, and compressed. [**Labium, glossae]. [**Hypopharynx]. Labrum without denticles on anterior margin, but with broad lobe adjacent to emargination. [**Epipharynx].

Prothorax (fig. 8) trapezoidal with round- ed margins and longer than wide; widest near anterior third and with lateral margins broadly rounded and gradually convergent anteriorly and more strongly convergent posteriorly. Pronotal punctation umbilicate; punctation dense, uniform and present on midline. Pronotal marginal ridge present and entire. Notosternal suture absent. Postprocoxal lobe long and with few punctures; transverse carina absent; apices widely separated from each other. Probasisternum without median carina; surface punctate. Mesospiracular peritreme with anteromedial margin fused, without suture, to furcasternum. Elytra longer than pronotum; humeral angle broadly rounded; posterior edge with row of setae; subapical region without long, thicker, posteromediad-directed seta near lateroapical corner. [**Scutellum, setae covered]. [**Mesosternum, median carina covered]. Mesocoxal acetabulum with marginal carina laterally, absent posteriorly. [**Intersternal suture present and well developed].

Profemur with ridge on anteroventral surface. Protibia with multiple combs extending from near base to tibial apex; tibia with shallow depression on ctenidial surface; apical portion not constricted or enlarged. Protarsomeres (fig. 8) 1–3 swollen; tarsomeres 1–3 tapered and smaller from 1–3; base of tarsomere 1 not surrounded by cupulate protibial apex; tarsomere 4 not expanded beneath tarsomere 5 and apical margin entire, not bilobed, [**ventral setae covered]; tarsomere 4 inserted laterad of middle of apex of asymmetrical third segment; tarsomere 5 with sparse pubescence ventrally. Mesotarsomere 1 longer than tarsomere 2. Metatarsomere 1 longer than tarsomeres 2–4 combined.

Abdominal segments without imbricate macrosculpturing (cf. fig. 28). Segment III with one paratergite; paratergal carina absent; sternum and tergum III separated by paratergite. Segment VII with tergum and sternum separated. Segments IV–VII without oval ‘‘windows’’ in intersegmental membrane. [**Sternum I]. [**Sterna IV–VII, glandular lobes]. Tergum IX (fig. 103) with base fused medially; lateroapical process long, slender, curved ventrally (fig. 104), and extending well beyond apex of tergum X; base of lateroapical process fused to tergal base and with incision laterally (fig. 104). Tergum X with lateral margin attenuate (fig. 103) to narrowly round- ed apex; base separated from tergum IX.

Female genital sclerites separated medially; proximal gonocoxite long, broad, flattened, apically truncate, and separated from short- er, setate, cylindrical, apically rounded distal gonocoxite (fig. 105).

[**Aedeagus] (according to Fagel, 1971: 49–50, Pseudoprocirrus abyssinicus has one paramere).

DISTRIBUTION AND HABITAT: The genus is recorded from Ethiopia, Zambia, Mozambique, and Zanzibar. No information about the habitat of the species has been published, nor was any on labels attached to specimens I examined.

DISCUSSION: Beyond characters used in descriptions virtually nothing is known about this genus. Bernhauer (1934: 506) described both the genus and the first included species from Zambia without illustrations. Fagel (1971: 47–52) described a second species from Ethiopia and illustrated silhouettes of the head, pronotum, and elytra of P. arrowi and P. abyssinicus and the underside of the head, the maxillary palpus, and aedeagus of the latter, and redescribed the genus.

Pseudoprocirrus and Oedodactylus share most features. Species of both genera have a pair of broad, rounded labral lobes, and enlarged first, second, and third protarsomeres (figs. 8, 89). Segment III of both genera has one paratergite on each side; the paratergite of Oedodactylus is moderately large, that of Pseudoprocirrus is narrow and difficult to see clearly. In the Procirrina only Pseudoprocirrus , Oedodactylus , and some species of Oedichirus have paratergites on III. Segments IV–VI lack paratergites and the tergum and sternum of each segment are fused. Segment VII also lacks paratergites, but the tergum and sternum are separated. The third protarsomere is strongly asymmetrical and the fourth tarsomere is inserted laterad of the middle of the apex of tarsomere 3, and the fourth maxillary palpomere of both is obliquely truncate.

The two genera have few external differences other than those already noted. The strongest features that differentiate Pseudoprocirrus and Oedodactylus are the separation of tergum IX and tergum X (fig. 103) in the former and fusion of these terga in the latter (fig. 87). The other strong differential feature is distribution: Pseudoprocirrus is in eastern Africa and Oedodactylus is Neotropical. The differentiating characters are few and the shared features many, but more detailed morphological study of the species may reveal others. Pseudoprocirrus includes only two species and Oedodactylus only four. Few specimens are known for Pseudoprocirrus , only four for P. arrowi and two for P. abyssinicus , and few dissections were possible.

Fagel (1971: 49) was aware that Pseudoprocirrus and Oedodactylus shared most characters, but continued to recognize two genera because he believed, based on his dissection of P. abyssinicus , that Pseudoprocirrus possessed a single paramere, whereas species of Oedodactylus have none. I examined a male and female syntype of P. arrowi and dissected the abdomen of the female, but not the one male, and was unable to verify Fagel’s observation. However, one paramere is unusual. Because so few specimens were available, I could dissect the abdomen of only one specimen of each of two of the four species of Oedodactylus and so, was unable to corroborate that all the species lack parameres. Fagel (1971: 47) stated that the penultimate five to six antennal segments of Pseudoprocirrus are compressed; this is untrue for the two syntypes of P. arrowi that I examined. Because the base of the head of P. arrowi lacks basal angles and the pronotum has strongly rounded anterior angles, it differs from some species of Oedodactylus , but both features are found in O. fuscobrunneus . The form of the head of a syntype of P. arrowi shown herein (fig. 8) differs significantly from Fagel’s (1971: 50, fig. 38) line drawing.

SPECIES INCLUDED AND

MATERIAL EXAMINED

abyssinicus Fagel – Lit. Att. [ Ethiopia, Zanzibar] arrowi Bernhauer – Syn ( FMNH, BMNH)....

............................ Zambia

UNDETERMINED SPECIMENS: None.

DISSECTIONS: Abdominal dissection: Pseudoprocirrus arrowi (1 female, Zambia).